30 results about "Lidar detector" patented technology

An apparatus for illuminating or masking an object and a method of using same. The apparatus includes a spatial light modulator transmitting, a structured pulsed laser beam from a pupil plane to at least one image plane in a field of view. The apparatus further includes a lidar detector receiving reflected laser beam reflected from the at least one image plane. For example, the lidar detector detects range, position, and / or time data for at least one object of interest or at least one object of disinterest. Using the detected data, the spatial light modulator illuminates object of interest or masks an object of disinterest, depending on a user's application.

Provided is a space-borne laser radar detector calibration system used for realizing calibration of the sensitivity, the linearity and the time response of detectors. The light emitted by an LED with low intensity, stable operation, and easy intensity adjustment is converted to the light irrelevant to the angle by employing an integrating sphere, the light irrelevant to the angle in the integrating sphere is coupled to an optical fiber through a coupling lens, the light in the optical fiber forms a collimated light which is easy for optical path construction through a collimating mirror, the collimated light is spitted by employing a fiber splitter, attenuated, and introduced to each detector, and the calibration of the sensitivity and the linearity is realized; and the calibration of the time response of the detectors requires a light source with ultrafast response time, a laser can generate narrow pulse with the ns-level width, time response information of the detectors can be conveniently extracted by employing the laser for generating the ns level, and the calibration of the time response is realized.

The application discloses a system and method for controlling crushed stone transmission in mining based on radar detection, including: a plate feeder, a laser radar detector located at the position where the mouth of the machine is aligned with the plate feeder, a PLC control module and Background server; Wherein, lidar detector, is used for obtaining the digital signal of the outline of the stone on the conveying plate of apron feeder by lidar scanning, and feeds it back to background server; Background server, is used for according to receiving The digital signal is used to calculate the proportion of large and small stones on the current conveying plate; the PLC control module is used to control the current value input to the motor of the apron feeder according to the calculated proportion of large and small stones to control the apron feeder. The frequency at which the feeder feeds stones into the crusher. The application can not only maximize the role of the crusher, but also not cause the jamming of the crusher, etc., realize the fully automatic transmission of crushed stones in mining equipment, improve work efficiency, and reduce costs.