Suteng Innovation Technology Co., Ltd.

Other

Shen Jiang

Chunxin Qiu

Letian Liu

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.

Lidar receiving apparatus, lidar system and laser ranging method

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.

Lidar signal receiving circuits, lidar signal gain control methods, and lidars using the same

A lidar receiving apparatus, a lidar system, a laser ranging method, a laser ranging controller and a computer readable storage medium are provided. 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, wherein the predefined rule includes: at a receiving time of a stray reflected signal, the bias voltage of the photodetector () is smaller than the breakdown voltage; and the receiving time of the stray reflected signal is a time at which a transmitted laser signal reaches the photodetector () through a stray light path other than a ranging light path. The lidar receiving apparatus may be employed to decrease a short-range blind area.

The present application relates to a Lidar that includes a laser transmitter to emit a laser beam; an optical processing circuit. The optical processing circuit is configured to receive the laser beam reflected from a target object and convert the reflected laser beam to a photocurrent signal, and convert the photocurrent signal from an optical receiver to a voltage signal. The Lidar also includes a gain control circuit, connecting to the optical processing circuit; and a controller, connecting to the gain control circuit, to adjust a gain of the optical processing circuit via the gain control circuit and based on an amplitude of the voltage signal.

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Shenzhen, China

Shen Jiang