Driving device and method for laser radar light-emitting device and laser radar
A technology of driving device and light-emitting device, applied in the direction of measuring device, utilizing re-radiation, and re-radiation of electromagnetic wave, etc., can solve the problems of complex circuit, slow response speed, large circuit interference, etc., to simplify circuit structure, reduce parasitic resistance, Realize the effect of direct control
Pending Publication Date: 2022-02-22
HESAI TECH CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the current mirror circuit needs to perform current conversion step by step, its response speed is slow, and it is difficult to achieve precise current control at the nanosecond level; and the circuit is relatively complex, and the parasitic capacitance and parasitic resistance in the node are relatively large, and the interference to the circuit is relatively large. Big
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] Various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.
[0039] In the following description, for the purposes of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail in order to avoid unnecessarily...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a driving device and method for a laser radar light-emitting device and a laser radar comprising the driving device. The driving device comprises a phase inverting module, wherein the input end of the phase inverting module is connected with a pulse voltage signal and an adjustable level and outputs a first intermediate level signal, and the phase of the first intermediate level signal is inverted with the phase of the pulse voltage signal; an isolation capacitorwhich receives the first intermediate level signal and outputs a second intermediate level signal; and a driving module which receives the second intermediate level signal and provides driving current for the light-emitting device to drive the light-emitting device to emit light, wherein the driving current is adjusted according to the adjustable level. According to the scheme, direct control over the driving current of the light-emitting device for the laser radar can be achieved, the circuit design is relatively simple, the current transmission path is short, and the response speed is high.
Description
technical field [0001] The present invention relates to the field of laser radar, and more specifically, to a driving device for a laser radar light-emitting device, a driving method and a laser radar including the driving device. Background technique [0002] With the rapid development of artificial intelligence technology, application scenarios such as automatic driving, face recognition, and 3D photography have gradually matured. As an important stereoscopic imaging sensing device, lidar has become the basic condition for the implementation of these application directions. figure 1 A schematic diagram of the working principle of an exemplary lidar 100 is shown. Such as figure 1 As shown in , the lidar 100 is, for example, a 16-line lidar, which can be along figure 1 16 lines of laser beams L1, L2, . During the detection process, the lidar 100 can rotate along its vertical axis, and during the rotation, the light emitting device inside the lidar 100 ( figure 1 (not sh...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01S7/48G01S17/88
CPCG01S7/4804G01S17/88
Inventor 尹辉朱雪洲向少卿
Owner HESAI TECH CO LTD