Abstract: The present disclosure discloses a method for predicting the battery performance based on a combination of material parameters of a battery pulping process, including obtaining a target prediction model; and obtaining a combination of material parameters to be predicted corresponding to the battery pulping process, and inputting the combination of the material parameters to be predicted into the target prediction model to obtain a target battery performance level corresponding to the combination of the material parameters to be predicted. The method of the present disclosure adopts a mathematical model method instead of manual testing, can quickly predict battery performance levels corresponding to different combinations of material parameters, and solves the problem that in the prior art, it is necessary to conduct separate tests for different input ratios of various materials to determine the impact of different material ratios on the battery performance.

Abstract: In one embodiment, a light detection and range (LIDAR) device includes an array of light transmitting and receiving (TX/RX) units arranged to sense a physical range associated with a target. Each of the light TX/RX units includes a mounting board having a light pass-through opening and a light emitter mounted adjacent to the light pass-through opening. The light emitter is configured to emit a light beam towards the target according to a transmitting path. The LIDAR device further includes a light detector positioned behind the mounting board to receive at least a portion of the light beam reflected from the target through the light pass-through opening according to a light receiving path. The light transmitting path and the light receiving path are substantially in parallel and close to each other.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes an array of light emitters to emit a number of light beams to sense a physical range associated with a target. The LIDAR device further includes a slope mirror having a slope surface and a flat surface supported by a rotatable platform. The rotatable platform is configured to rotate with respect to a vertical axis perpendicular to the flat surface. The light emitters are configured to project the light beams onto the slope surface of the slope mirror, which are deflected towards the target. The slope mirror rotates along with the rotatable platform while the array of light emitters remains steady. The LIDAR device further includes one or more light detectors to receive at least a portion of the light beams reflected from the target.

Abstract: A two dimensional (2D) LIDAR scanning system that uses a combination of a rotating polygonal mirror and a rotatable prism to scan an area of an object. The polygonal mirror and prism are rotated in combination to generate a scanning pattern. A pulsed laser is directed to the polygonal mirror and the prism is held in a fixed position. The polygonal mirror is then incremented a plurality of times to generate a scan line of LIDAR data. The prism is then incremented and a next scan line, e.g., up or down from the first scan line, is generated. An avalanche photodiode (APD) can read the reflections of objects for each scan point. Object reflections can be directed to the APD using either a polarizing beam splitter with a quarter wave plate, or a 50-50 beam splitter.

Abstract: In some implementations, a method of verifying operation of a sensor is provided. The method includes causing a sensor to obtain sensor data at a first time, wherein the sensor obtains the sensor data by emitting waves towards a detector. The method also includes determining that the detector has detected the waves at a second time. The method further includes receiving the sensor data from the sensor at a third time. The method further includes verifying operation of the sensor based on at least one of the first time, the second time, or the third time.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes a light emitter to emit a light beam towards a target, wherein at least a portion of the light beam is reflected from the target. The LIDAR device further includes an optical sensing unit including a first photodetector and a second photodetector. The first photodetector is a different type of photodetector from the second photodetector, where the optical sensing unit is to receive the portion of the light beam reflected from the target. When the optical sensing unit receives the portion of the light beam, the first photodetector generates a first optical sensor output signal and the second photodetector generates a second optical sensor output signal. The LIDAR device further includes a first circuitry portion to generate an intensity signal indicative of an intensity of the received portion of the light beam responsive to the first optical sensor output signal.

Abstract: A LIDAR scanning system uses a combination of a time-to-digital conversion (TDC) device and a multi-pixel photon counter (MPPC) to determine the peak location (time) and magnitude of a reflection of a laser beam off of an object. A configurable trigger threshold of the TDC indicates that a sufficient number of MPPC pixels have triggered that the peak detection module should begin sampling and storing MPPC counts of triggered pixels. When the light received from the reflected laser beam falls below the trigger threshold of the TDC, the MPPC stops sampling the MPPC counts. The peak magnitude of the reflection of the laser beam is determined from the highest sample count of the MPPC. A time at which the peak magnitude occurred is determined as the midpoint of TDC trigger points. The peak magnitude MPPC count is correlated to an intensity value.

Abstract: In some implementations, a method of verifying operation of a sensor is provided. The method includes causing a sensor to obtain sensor data at a first time, wherein the sensor obtains the sensor data by emitting waves towards a detector. The method also includes determining that the detector has detected the waves at a second time. The method further includes receiving the sensor data from the sensor at a third time. The method further includes verifying operation of the sensor based on at least one of the first time, the second time, or the third time.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes an array of light emitters to emit a number of light beams to sense a physical range associated with a target. The LIDAR device further includes a prism-shaped mirror assembly having a plurality of joining faces acting as reflective surfaces and a bottom base face. The rotatable platform is configured to rotate with respect to a vertical axis perpendicular to the bottom base face. The light emitters are configured to project the light beams onto the reflective surfaces of the mirror assembly, which are deflected towards the target. The mirror assembly rotates along with the rotatable platform while the array of light emitters remains steady. The LIDAR device further includes one or more light detectors to receive at least a portion of the light beams reflected from the target.

Abstract: A two dimensional LIDAR scanning system uses a low sampling rate (250-500 MHz) analog to digital convertor (ADC) to sample an analog signal representing a reflection of a laser beam off of an object scanned by the LIDAR device. A splining method creates a representation of the analog signal using the sample points. The representation of the analog signal is used to detect a peak magnitude of the reflected laser beam and a time at which the peak magnitude occurred relative to the emission of the laser beam. A plurality of laser emitters and associated analog sensor outputs can be multiplexed into a single signal that is sequentially sampled by a single ADC with any sampling rate, at, e.g. 500 mega-samples per second. The plurality of samples of each analog signal are a representation of each analog signal generated from the plurality of samples using a splining method.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes an array of light emitters to emit a number of light beams to sense a physical range associated with a target. The LIDAR device further includes a prism-shaped mirror assembly having a plurality of joining faces acting as reflective surfaces and a bottom base face. The rotatable platform is configured to rotate with respect to a vertical axis perpendicular to the bottom base face. The light emitters are configured to project the light beams onto the reflective surfaces of the mirror assembly, which are deflected towards the target. The mirror assembly rotates along with the rotatable platform while the array of light emitters remains steady. The LIDAR device further includes one or more light detectors to receive at least a portion of the light beams reflected from the target.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes a light emitter to emit a light beam towards a target, wherein at least a portion of the light beam is reflected from the target. The LIDAR device further includes an optical sensing unit including a first photodetector and a second photodetector. The first photodetector is a different type of photodetector from the second photodetector, where the optical sensing unit is to receive the portion of the light beam reflected from the target. When the optical sensing unit receives the portion of the light beam, the first photodetector generates a first optical sensor output signal and the second photodetector generates a second optical sensor output signal. The LIDAR device further includes a first circuitry portion to generate an intensity signal indicative of an intensity of the received portion of the light beam responsive to the first optical sensor output signal.

Abstract: In one embodiment, a light detection and range (LIDAR) device includes an array of light transmitting and receiving (TX/RX) units arranged to sense a physical range associated with a target. Each of the light TX/RX units includes a mounting board having a light pass-through opening and a light emitter mounted adjacent to the light pass-through opening. The light emitter is configured to emit a light beam towards the target according to a transmitting path. The LIDAR device further includes a light detector positioned behind the mounting board to receive at least a portion of the light beam reflected from the target through the light pass-through opening according to a light receiving path. The light transmitting path and the light receiving path are substantially in parallel and close to each other.

Abstract: In one embodiment, a LIDAR device of an autonomous driving vehicle (ADV) includes an array of light emitters to emit a number of light beams to sense a physical range associated with a target. The LIDAR device further includes a slope mirror having a slope surface and a flat surface supported by a rotatable platform. The rotatable platform is configured to rotate with respect to a vertical axis perpendicular to the flat surface. The light emitters are configured to project the light beams onto the slope surface of the slope mirror, which are deflected towards the target. The slope mirror rotates along with the rotatable platform while the array of light emitters remains steady. The LIDAR device further includes one or more light detectors to receive at least a portion of the light beams reflected from the target.

Abstract: A two dimensional (2D) LIDAR scanning system that uses a combination of a rotating polygonal mirror and a rotatable prism to scan an area of an object. The polygonal mirror and prism are rotated in combination to generate a scanning pattern. A pulsed laser is directed to the polygonal mirror and the prism is held in a fixed position. The polygonal mirror is then incremented a plurality of times to generate a scan line of LIDAR data. The prism is then incremented and a next scan line, e.g., up or down from the first scan line, is generated. An avalanche photodiode (APD) can read the reflections of objects for each scan point. Object reflections can be directed to the APD using either a polarizing beam splitter with a quarter wave plate, or a 50-50 beam splitter.

Abstract: A two dimensional LIDAR scanning system uses a low sampling rate (250-500 MHz) analog to digital convertor (ADC) to sample an analog signal representing a reflection of a laser beam off of an object scanned by the LIDAR device. A splining method creates a representation of the analog signal using the sample points. The representation of the analog signal is used to detect a peak magnitude of the reflected laser beam and a time at which the peak magnitude occurred relative to the emission of the laser beam. A plurality of laser emitters and associated analog sensor outputs can be multiplexed into a single signal that is sequentially sampled by a single ADC with any sampling rate, at, e.g. 500 mega-samples per second. The plurality of samples of each analog signal are a representation of each analog signal generated from the plurality of samples using a splining method.

Abstract: A LIDAR scanning system uses a combination of a time-to-digital conversion (TDC) device and a multi-pixel photon counter (MPPC) to determine the peak location (time) and magnitude of a reflection of a laser beam off of an object. A configurable trigger threshold of the TDC indicates that a sufficient number of MPPC pixels have triggered that the peak detection module should begin sampling and storing MPPC counts of triggered pixels. When the light received from the reflected laser beam falls below the trigger threshold of the TDC, the MPPC stops sampling the MPPC counts. The peak magnitude of the reflection of the laser beam is determined from the highest sample count of the MPPC. A time at which the peak magnitude occurred is determined as the midpoint of TDC trigger points. The peak magnitude MPPC count is correlated to an intensity value.

Abstract: A LIDAR scanning system uses a combination of a laser emitter, a scanning mirror which scans in a first plane, a diffuser which diffuses emitted laser beams in a second plane, perpendicular to the first plane. A focusing optic focuses a reflection of a laser beam, reflected off of an object, onto a detector. The focusing optic focuses the reflection of the reflection of the laser beam at least in the first plane, and may also focus the reflection of the laser beam in the second plane. A peak magnitude of the detector, and a time which the peak occurred, relative to the time at which the laser beam was emitted (“time of flight”), and LIDAR information is generated from peak magnitude and time of flight. The LIDAR scanning system can be used in an autonomous driving vehicle (ADV) to assist in navigating the ADV.