公开(公告)号：US20240295637A1

公开(公告)日：2024-09-05

申请号：US18595040

申请日：2024-03-04

Applicant: AEVA, INC.

Inventor： Murat Ozbas ,  Bryce Bradford ,  Adrit Lath ,  Matt Last

IPC: G01S7/481 ,  G01D5/30

CPC classification number: G01S7/4817 ,  G01D5/30 ,  G01D2205/20

Abstract: A LIDAR system includes an actuator assembly and actuator position tracking circuitry. The actuator position tracking circuity includes a light emitting diode (LED) to emit a first signal toward an actuator, a photodiode to receive a second signal based on a position of the actuator and generate an output signal, and at least one front-end electronics to produce a low-impedance analog electrical signal based on the output signal.

公开(公告)号：US20240361457A1

公开(公告)日：2024-10-31

申请号：US18307288

申请日：2023-04-26

Applicant: AEVA, INC.

Inventor： Kevin Fronczak ,  Murat Ozbas ,  Bryce Bradford

IPC: G01S17/26 ,  G01S7/481 ,  G01S17/931

CPC classification number: G01S17/26 ,  G01S7/4817 ,  G01S17/931

Abstract: A frequency-modulated continuous-wave (FMCW) light detection and ranging (LIDAR) system includes a high-pass filter that includes a first connection and a second connection. The system includes an optical amplifier that couples to the first connection of the high-pass filter. The system includes a power source that couples to the first connection of the high-pass filter and provides power to the optical amplifier. The system includes switching circuitry that includes an output that couples to the second connection of the high-pass filter. The switching circuitry produces at the output a first voltage level and a second voltage level. The first voltage level causes the optical amplifier to turn on, and the second voltage level causes the optical amplifier to turn off.

公开(公告)号：US20240183954A1

公开(公告)日：2024-06-06

申请号：US18061640

申请日：2022-12-05

Applicant: AEVA, INC.

Inventor： Garret Phillips ,  Murat Ozbas ,  Bryce Bradford

IPC: G01S7/4912 ,  G01S7/4911 ,  H03M1/70

CPC classification number: G01S7/4912 ,  G01S7/4911 ,  H03M1/70

Abstract: A frequency-modulated continuous-wave (FMCW) light detection and ranging (LIDAR) system includes an optical source to generate an optical beam at a chirp rate based on a control signal. The system includes a receiver to capture at least a portion of the optical beam and generate a beat frequency based on the chirp rate. The system also includes mixer circuitry to calculate a difference value between the beat frequency and a reference frequency. The system also includes combination circuitry to combine the difference value with an offset voltage to generate an adjusted control signal that is configured to minimize the difference value to maintain the chirp rate.

公开(公告)号：US20230266449A1

公开(公告)日：2023-08-24

申请号：US18162529

申请日：2023-01-31

Applicant: Aeva, Inc.

Inventor： Syrus Ziai ,  Kumar Bhargav Viswanatha ,  Amol V. Gole ,  Murat Ozbas ,  Mark Pude ,  Esha John

IPC: G01S7/497 ,  G01S7/4911 ,  G01S17/58 ,  G01S7/481

CPC classification number: G01S7/497 ,  G01S7/4911 ,  G01S17/58 ,  G01S7/4817

Abstract: A method transmits a predetermined signal through a first channel that includes a first digital circuit to produce a first result. The first channel is a functional channel in the FMCW LIDAR system. The method retrieves a second result that is based on the predetermined signal, and determines whether the first result and the second result are nonequivalent. The method then invokes a fault signal in response to determining that the first result and the second result are nonequivalent.

公开(公告)号：US20240004071A1

公开(公告)日：2024-01-04

申请号：US17967801

申请日：2022-10-17

Applicant: AEVA, INC.

Inventor： Mark Pude ,  Murat Ozbas

IPC: G01S17/32 ,  G01S17/88

CPC classification number: G01S17/32 ,  G01S17/88

Abstract: Embodiments of the present disclosure provide a configurable TIA circuit that can be used as both a single-ended “target TIA” and a differential “reference TIA”. The configurable TIA may include a first circuit to receive an input from a first photodiode (PD), the first circuit comprising a first switch and a first output buffer. The configurable TIA may also include a second circuit to receive an input from a second PD, the second circuit comprising a second switch and a second output buffer. The first and second switches are configured to operate the first and second circuits as independent signal paths via which the input from the first and second PDs can drive the first and second output buffers respectively in a first mode, and in a second mode, combine the input from the first and second PDs into the first output buffer to generate a single differential output.