CN-122002139-A - ATR low-power-consumption laser exposure method, system, equipment and storage medium

CN122002139ACN 122002139 ACN122002139 ACN 122002139ACN-122002139-A

Abstract

The invention provides an ATR low-power-consumption laser exposure method, system, equipment and storage medium, which are applied to a laser emitter and comprise the steps of respectively determining a first time exposure window and a second time exposure window according to counting parameters before and after a preset ATR frame, acquiring an image data stream of a target point in real time and synchronously extracting a field synchronous signal, outputting a first pulse driving signal based on the field synchronous signal and the first time exposure window to drive the laser to perform pre-exposure, outputting a second pulse driving signal based on the field synchronous signal and the second time exposure window after the pre-exposure is finished, and driving the laser to complete formal exposure, thereby realizing low-power-consumption laser exposure control. The method, the system, the equipment and the storage medium adopt a pulse driving mode to reduce the heating of the laser, and ensure the imaging quality and the stability under the premise of ensuring the synchronous acquisition of the image data stream of the target point through the phase laser time sequence control.

Inventors

HE PEISHUANG
CHENG SHUAI
YANG ZIYE
LEI SONG

Assignees

广州南方测绘科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260126

Claims (10)

1. An ATR low power consumption laser exposure method, which is characterized by being applied to a laser emitter, comprises the following steps: determining a first time exposure window based on a preset ATR frame front count parameter; Acquiring an image data stream of a target point in real time; synchronously acquiring a field synchronous signal based on the target point image data stream; outputting a first pulse driving signal based on the field synchronizing signal and a first time exposure window, and driving a laser emitter to emit pulse laser based on the first driving signal so as to realize pre-exposure of a target point image; determining a second time exposure window based on a preset ATR frame post-counting parameter; And outputting a second pulse driving signal based on the field synchronizing signal and a second time exposure window after the pre-exposure is finished, and driving a laser emitter to emit pulse laser based on the second pulse driving signal so as to realize formal exposure of the target point image.
2. The ATR low power laser exposure method according to claim 1, wherein the determining the first time exposure window based on the preset ATR pre-frame count parameter comprises: Acquiring an ATR system clock period; and determining a first time exposure window based on the ATR system clock period and a preset ATR frame front counting parameter.
3. The ATR low power consumption laser exposure method according to claim 1, wherein the outputting of the first pulse driving signal based on the field synchronizing signal and the first time exposure window to drive the laser emitter to emit pulse laser based on the first driving signal, thereby realizing pre-exposure of the target point image, comprises: Acquiring the falling edge of the field synchronizing signal, so that the falling edge of the field synchronizing signal is used as an exposure time sequence reference time point; And outputting a first pulse driving signal based on the exposure time sequence reference time point and the first time exposure window, so that the first driving signal drives the laser emitter to emit pulse laser in the first time exposure window, and further pre-exposure of the target point image is realized.
4. The ATR low power consumption laser exposure method according to claim 1, wherein the outputting of the first pulse driving signal based on the field synchronizing signal and the first time exposure window to drive the laser emitter to emit pulse laser based on the first driving signal, thereby realizing pre-exposure of the target point image, comprises: outputting a first level signal based on the field sync signal and a first time exposure window; And in the first time exposure window, periodically turning over the first level signal based on a preset system clock signal to generate the first pulse driving signal, and driving a laser emitter to emit pulse laser based on the first driving signal so as to realize pre-exposure of the target point image.
5. The ATR low power consumption laser exposure method according to claim 1, wherein the outputting of the first pulse driving signal based on the field synchronizing signal and the first time exposure window to drive the laser emitter to emit pulse laser based on the first driving signal, thereby realizing pre-exposure of the target point image, comprises: When the falling edge of the field synchronous signal is detected, a first time counter is started, so that the first time counter counts exposure time based on the falling edge of the field synchronous signal, and a first time count value is obtained; When the first time count value is smaller than a preset ATR frame front count parameter, judging that the target point image is in the first time window, outputting a first pulse driving signal, and driving a laser emitter to emit pulse laser based on the first driving signal so as to realize pre-exposure of the target point image.
6. The ATR low power consumption laser exposure method according to claim 1, wherein after the pre-exposure is completed, outputting a second pulse driving signal based on the field synchronizing signal and a second time exposure window to drive a laser emitter to emit pulse laser based on the second pulse driving signal, thereby realizing formal exposure of the target point image, comprising: when the falling edge of the field synchronous signal is detected, a second time counter is started, so that the second time counter counts exposure time based on the falling edge of the field synchronous signal after pre-exposure is finished, and a second time count value is obtained; and when the second time count value is smaller than the preset ATR frame post-counting parameter, judging that the second time count value is in the second time window, outputting a second pulse driving signal, and driving the laser emitter to emit pulse laser based on the second pulse driving signal, so that formal exposure of the target point image is realized.
7. An ATR low power laser exposure system comprising: a first time window determining module, configured to determine a first time exposure window based on a preset ATR pre-frame count parameter; The image acquisition module is used for acquiring the image data stream of the target point in real time; The pre-exposure module is used for synchronously acquiring a field synchronizing signal based on the target point image data stream, outputting a first pulse driving signal based on the field synchronizing signal and a first time exposure window, and driving a laser emitter to emit pulse laser based on the first driving signal so as to realize pre-exposure of the target point image; A second time window determining module, configured to determine a second time exposure window based on a preset ATR frame post-count parameter; And the formal exposure module is used for outputting a second pulse driving signal based on the field synchronizing signal and a second time exposure window after the pre-exposure is finished, driving a laser emitter to emit pulse laser based on the second pulse driving signal, and further realizing formal exposure of the target point image.
8. The ATR low power laser exposure system of claim 7, wherein the first time window determination module for determining a first time exposure window based on a preset ATR pre-frame count parameter comprises: Acquiring an ATR system clock period; and determining a first time exposure window based on the ATR system clock period and a preset ATR frame front counting parameter.
9. A terminal device comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing an ATR low power laser exposure method according to any one of claims 1-6 when executing the computer program.
10. A computer readable storage medium comprising a stored computer program, wherein the computer program, when run, controls a device in which the computer readable storage medium is located to perform an ATR low power laser exposure method according to any one of claims 1-6.

Description

ATR low-power-consumption laser exposure method, system, equipment and storage medium Technical Field The invention belongs to the technical field of measuring instruments, and particularly relates to an ATR low-power-consumption laser exposure method, system, equipment and storage medium. Background In an automatic target identification (ATR) system of a total station, a laser transmitter is used for projecting a positioning beam to a target point, and the rapid identification and the collimation of the target point are realized by matching with an image sensor. Currently, the usual ATR laser emission mostly uses a continuous emission mode, i.e. the laser is operated continuously for the measurement period. Although the mode can provide stable optical signals, the system power consumption is obviously increased, and particularly, the battery-powered equipment or equipment requiring long-term field operation is not facilitated, so that the cruising ability and the application flexibility of the equipment are limited. In addition, heat build-up from continuous emission can also affect laser life and output stability. On the other hand, if pulse emission which is not synchronized with the image acquisition timing is simply adopted for reducing power consumption, noise is easily introduced at the frame switching or the initial exposure stage of the image sensor due to abrupt change of light intensity, resulting in degradation of image quality and degradation of target recognition reliability. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an ATR low-power-consumption laser exposure method, system, equipment and storage medium, so as to solve the problems. In order to solve the technical problems, the invention provides an ATR low-power consumption laser exposure method, which is applied to a laser emitter and comprises the following steps: determining a first time exposure window based on a preset ATR frame front count parameter; Acquiring an image data stream of a target point in real time; synchronously acquiring a field synchronous signal based on the target point image data stream; outputting a first pulse driving signal based on the field synchronizing signal and a first time exposure window, and driving a laser emitter to emit pulse laser based on the first driving signal so as to realize pre-exposure of a target point image; determining a second time exposure window based on a preset ATR frame post-counting parameter; And outputting a second pulse driving signal based on the field synchronizing signal and a second time exposure window after the pre-exposure is finished, and driving a laser emitter to emit pulse laser based on the second pulse driving signal so as to realize formal exposure of the target point image. In the above scheme, the laser emission is divided into two stages of pre-exposure and main exposure by determining the first time exposure window based on the preset ATR frame pre-count parameter and outputting the first pulse driving signal based on the field synchronizing signal to drive the laser emitter to perform pre-exposure, and then determining the second time exposure window based on the preset ATR frame post-count parameter and outputting the second pulse driving signal to perform main exposure. The necessary imaging time period is precisely positioned by means of the field synchronizing signal, the working time of the laser is compressed to the time period, and therefore energy waste caused by continuous emission is avoided, and power consumption is effectively reduced. And secondly, a stable light signal can be provided for the target point image data stream based on the field synchronous signal in the pre-exposure stage, so that abrupt change of the image data before formal exposure is prevented. In addition, the pulse driving mode can reduce the heating of the laser, and further ensures the imaging quality and stability by means of stage laser time sequence control on the premise of ensuring synchronous acquisition of image data streams of target points. It should be noted that, the field synchronization signal may be a field signal output by a CMOS (complementary metal oxide semiconductor) camera in an actual application scene, and the falling edge thereof is detected as a reference point of an exposure timing. The first pulse driving signal and the second pulse driving signal may be atr_ PLUSE _adj (ATR pulse adjusting) signals, and the laser tube is driven to emit laser at a high level. The scheme can be realized on a ZYNQ (programmable system on a chip) chip platform, the counting parameters before frames, the counting parameters after frames and ATR enabling signals are transmitted through an AXI (advanced extensible interface) bus connector, the parameter configuration and the time sequence control are carried out by a PS (processing system) end, and the generation and the output of pulse driving signals are realized by a PL (progr