CN-122028245-A - Method and device for controlling precision of beam pointing

CN122028245ACN 122028245 ACN122028245 ACN 122028245ACN-122028245-A

Abstract

The invention relates to the field of LED light control, in particular to a method and a device for controlling the precision of beam pointing. The method comprises the following steps of receiving an LED light direction control command of an upper control system, carrying out instruction recognition according to the LED light direction control command to obtain a control state parameter, determining a current adjustment parameter set according to the control state parameter, carrying out sectional injection current adjustment on an LED light device based on the current adjustment parameter set, and outputting an LED light adjustment beam. And carrying out real-time beam pointing sensing and real-time precision compensation processing on the LED lamplight adjusting beam. The invention realizes the high-precision and high-stability control of the LED lamplight beam pointing.

Inventors

SONG LEI
YE YUANYUAN
FENG YING
Peng Sailong

Assignees

深圳市卡能光电科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (10)

1. The method for controlling the precision of the beam pointing is characterized by comprising the following steps: step S1, receiving an LED lamplight direction control command of an upper control system, and carrying out instruction identification according to the LED lamplight direction control command to obtain a control state parameter; s2, determining a current regulation parameter set according to the control state parameter; s3, carrying out sectional injection current adjustment on the LED lamplight based on the current adjustment parameter set, and outputting an LED lamplight adjustment beam; and S4, performing real-time beam pointing sensing and real-time precision compensation processing on the LED lamplight adjusting beam.
2. The method for controlling the precision of beam pointing according to claim 1, wherein the step S1 comprises the specific steps of: receiving an LED lamplight pointing control command of an upper control system; Based on the LED lamplight pointing control command, identifying space angle coordinates of the beam propagation direction, the deflection rate requirement and the pointing precision level, and obtaining a direction adjustment index; calculating an LED lamplight adjusting intensity value based on the LED lamplight direction control command; Performing state deviation calculation on the current working state of the LED lamplight according to the direction adjustment index to obtain a beam state deviation value; and encoding the direction adjustment index, the LED lamplight adjustment intensity value and the beam state deviation value to obtain a control state parameter.
3. The method of claim 2, wherein the current operating state of the LED light fixture includes output power, operating temperature, operating duration, and real-time output direction.
4. The method for controlling the precision of beam pointing according to claim 1, wherein the step S2 comprises the specific steps of: Identifying geometrical structural parameters of an optical resonant cavity of the LED lamp, wherein the geometrical structural parameters comprise cavity length, curvature radius of a reflecting mirror and space position of an active area; Calculating the centroid offset of the intracavity light field based on the control state parameters and outputting the centroid offset and offset distance of the light field; Carrying out carrier multi-position distribution demand analysis based on the optical field centroid offset and offset distance to obtain a distribution value; A current regulation parameter set is determined based on the distribution values.
5. The method according to claim 4, wherein the specific step of determining the current adjustment parameter set based on the distribution value is: setting a plurality of constraint indexes; The plurality of constraint indexes comprise carrier diffusion effect, recombination rate and current constraint effect; determining a spatial distribution mode of the injection current according to the distribution values of the constraint indexes; calculating a current regulation mode, a current amplitude and an injection time sequence of the injection current based on the spatial distribution mode to obtain a current regulation parameter; and carrying out safety feasibility verification on the current regulation parameters, and outputting a current regulation parameter set.
6. The method for controlling the precision of beam pointing according to claim 1, wherein the step S3 comprises the specific steps of: The method comprises the steps of carrying out sectional injection current adjustment on an LED lamplight based on a current adjustment parameter set, and monitoring real-time carrier distribution data of an active area based on a built-in photoelectric detector array; identifying a local temperature rise state in the active region according to the infrared thermal image sensor; calculating temperature field distribution and temperature gradient based on the local temperature rise state; Carrying out distribution refraction analysis on real-time carrier distribution data, temperature field distribution and temperature gradient to obtain effective refractive index spatial distribution; Estimating the centroid position of the light field based on the effective refractive index spatial distribution to obtain the center position of the light field; and carrying out beam pointing adjustment judgment based on the central position of the light field, and outputting an LED lamplight adjusting beam.
7. The method for controlling the precision of beam pointing according to claim 6, wherein the specific steps of performing beam pointing adjustment determination based on the light field center position and outputting the LED light adjustment beam are as follows: calculating the transverse offset and the angular offset of an ideal cavity axis based on the light field center position to obtain a light field center offset vector; converting the light field center offset vector into an inclination angle parameter of the emergent wave front; And tracking the inclination angle parameter in real time, and when the inclination angle parameter is equal to the target pointing direction, judging that the light beam pointing direction is adjusted in place, triggering a high-power emission mode of the LED lamplight, and outputting an LED lamplight adjusting light beam.
8. The method for controlling the precision of beam pointing according to claim 1, wherein the specific steps of step S4 are: performing real-time beam pointing sensing on the LED lamplight adjusting beam to obtain an actual pointing state parameter; Carrying out multiple comparisons on the azimuth angle, the pitch angle and the angle stability parameters according to the direction adjustment index, and extracting a residual pointing deviation value; Carrying out frequency domain analysis on the residual directional deviation value, and identifying static deviation, low-frequency drift and high-frequency jitter components; Comprehensively evaluating according to the static deviation, the low-frequency drift and the high-frequency jitter component, and outputting a pointing deviation report; And carrying out real-time precision compensation processing based on the pointing deviation report.
9. The method for controlling the precision of beam pointing according to claim 8, wherein the specific steps of performing real-time precision compensation processing based on the pointing deviation report are as follows: carrying out distribution adjustment quantity compensation calculation based on the pointing deviation report, and outputting carrier distribution compensation quantity; Carrying out current amplitude correction on each electrode based on the carrier distribution compensation quantity to obtain a current compensation adjustment value; And carrying out real-time precision compensation processing based on the current compensation adjustment value.
10. A beam pointing accuracy control apparatus for performing the beam pointing accuracy control method according to claim 1, comprising: The system comprises a receiving unit, a control state parameter obtaining unit and a control state parameter obtaining unit, wherein the receiving unit is used for receiving an LED light direction control command of an upper control system; A current adjusting unit for determining a current adjusting parameter set according to the control state parameter; The light beam adjusting unit is used for adjusting the sectional injection current of the LED lamplight based on the current adjusting parameter set and outputting an LED lamplight adjusting light beam; And the compensation unit is used for carrying out real-time beam pointing sensing and real-time precision compensation processing on the LED lamplight adjusting beam.

Description

Method and device for controlling precision of beam pointing Technical Field The invention relates to the field of LED light control, in particular to a method and a device for controlling the precision of beam pointing. Background Compared with the traditional large-range illumination LEDs, the directional LED light beam is usually required to realize accurate directional output in a smaller divergence angle range, and the pointing error of the directional LED light beam can directly influence the light spot positioning precision, the signal transmission quality and the target identification effect. In the practical application process, the pointing accuracy of the directional LED light beam is easily affected by various factors, such as mechanical structure assembly errors, driving current fluctuation, environmental temperature variation, vibration impact, and device aging caused by long-term operation. These factors may cause beam deflection, jitter or pointing drift, thereby reducing the stability and efficiency of the system, and in severe cases even leading to functional failure or failure of the application task. For the control mode of directional LED light beams, a static mechanical adjustment or simple open-loop control method is adopted, and the light beam pointing is realized through fixing the installation angle or presetting parameters. However, such methods typically rely on manual calibration, lack dynamic adjustment capabilities, and are difficult to adapt to complex and diverse working environments. When the system operation condition changes, the beam pointing error can not be corrected in time, so that the pointing precision is gradually reduced. In addition, the existing partial closed-loop control scheme is limited by the sensing precision and the simplicity of a control algorithm, and only rough correction can be realized, so that the requirements of high-precision and high-stability application scenes are difficult to meet. Disclosure of Invention The invention provides a method and a device for controlling the precision of beam pointing to solve at least one of the technical problems. In order to achieve the above object, the present invention provides a method for controlling the accuracy of beam pointing, comprising the steps of: step S1, receiving an LED lamplight direction control command of an upper control system, and carrying out instruction identification according to the LED lamplight direction control command to obtain a control state parameter; s2, determining a current regulation parameter set according to the control state parameter; s3, carrying out sectional injection current adjustment on the LED lamplight based on the current adjustment parameter set, and outputting an LED lamplight adjustment beam; and S4, performing real-time beam pointing sensing and real-time precision compensation processing on the LED lamplight adjusting beam. In the present specification, there is provided a beam pointing accuracy control apparatus for performing the beam pointing accuracy control method as described above, comprising: The system comprises a receiving unit, a control state parameter obtaining unit and a control state parameter obtaining unit, wherein the receiving unit is used for receiving an LED light direction control command of an upper control system; A current adjusting unit for determining a current adjusting parameter set according to the control state parameter; The light beam adjusting unit is used for adjusting the sectional injection current of the LED lamplight based on the current adjusting parameter set and outputting an LED lamplight adjusting light beam; And the compensation unit is used for carrying out real-time beam pointing sensing and real-time precision compensation processing on the LED lamplight adjusting beam. The LED lamplight direction control module has the advantages that the LED lamplight direction control command of the upper control system is received, so that the LED lamplight direction control module can form closed loop cooperation with a complete machine system or a task system, and the LED lamplight direction action is ensured to be highly consistent with the task requirement. And carrying out instruction identification and analysis on the LED lamplight pointing control command, converting the instruction identification and analysis into standardized control state parameters (such as a target pointing angle, a dynamic response mode, an accuracy grade and the like), and avoiding ambiguity or misjudgment caused by directly using an original instruction. The control state parameters are mapped into a current regulation parameter set, so that the LED lamplight directional control is changed into a higher-precision current control mode by traditional mechanical or optical regulation. The current regulation parameter set can be thinned into a plurality of regulation dimensions (such as injection current amplitude, change rate, segmentation time