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Detection device, pixel unit and array for collecting and processing laser signals

A pixel unit and laser signal technology, applied in the field of laser detection, can solve the problems of low image spatial resolution, inaccurate measurement, slow scanning speed, etc., and achieve the effects of high image spatial resolution, improved scanning speed, and simple circuit.

Active Publication Date: 2020-02-18
NINGBO ABAX SENSING ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the above background, in order to solve the problems of inaccurate measurement, slow scanning speed and low spatial resolution of images in the existing laser radar ranging system, the present invention provides a detection device, pixel unit and array for collecting and processing laser signals

Method used

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  • Detection device, pixel unit and array for collecting and processing laser signals
  • Detection device, pixel unit and array for collecting and processing laser signals
  • Detection device, pixel unit and array for collecting and processing laser signals

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Embodiment Construction

[0053] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0054] The detecting device for collecting and processing laser signals provided by the present invention is mainly composed of a detector array and a signal collecting and processing unit.

[0055] see figure 2 The signal acquisition and processing unit is used to receive and process the output signal of the detector array, including a sampling circuit 110 and a processing circuit 112 composed of a column differential amplifier circuit 1121, an A / D conversion circuit 1122 and a data output module 1123; the sampling circuit 110, the column The differential amplifier circuit 1121, the A / D conversion circuit 1122 and the data output module 1123 are sequentially connected; the sampling circuit 110 is used to complete the acquisition of the pixel signal and charge accumulation, and then output the two-way voltage signal to the column differential amplifier circuit 1121,...

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Abstract

The invention provides a detection device used for acquiring and processing laser signals, a pixel unit and a pixel unit array in order to solve a problem that an existing laser radar ranging system is inaccurate in measurement, slow in scanning speed and low in image spatial resolution. Each pixel unit comprises a photodiode and a sampling circuit which is connected with a negative electrode end of the photodiode and integrated with the photodiode into a whole body; each pixel unit in the pixel unit array corresponds to an integral reading circuit, the pixel units perform data transformation simultaneously in operation, and the scanning speed of the laser ranging system is greatly improved compared with a traditional single-point detection mode; and each photodiode in the pixel unit array corresponds to a different spatial view field angle through a lens, and the image spatial resolution is high.

Description

technical field [0001] The invention belongs to the technical field of laser detection, and in particular relates to a detection device, a pixel unit and a pixel unit array for collecting and processing laser signals. Background technique [0002] With the development of laser technology, embedded technology and integrated optics, laser ranging is developing in the direction of digitization, automation, low cost and miniaturization. Laser ranging radar has the advantages of high precision, small system size and rapid measurement, and has a wide application prospect. [0003] How to obtain the precise target position in the process of lidar ranging is very important for improving the image resolution, especially for the target vehicle that is constantly moving. Due to the electromagnetic interference inside the vehicle, it is easy to cause the problem of inaccurate measurement. [0004] In addition, most of the traditional vehicle-mounted lidar detectors use a single-point t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08G01S7/48
CPCG01S7/48G01S17/08
Inventor 雷述宇
Owner NINGBO ABAX SENSING ELECTRONICS TECH CO LTD
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