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Line 1: − + + + − + + + − + − + − 触发信号支持沿属性可设，触发延迟可设，去毛刺属性可设。+ − triggeredge ： 触发沿属性+ − tgdly：触发延迟+ − tgdebncr：去毛刺属性+ − + − 此模式下，以I2C寄存器来控制触发抓拍一张。+ + − + − 注：以上指令参考设置参考：[[CS-MIPI-X i2c/zh|CS系列模组参数配置脚本]]。+ − + − + − 在触发模式下，推荐用户使用手动曝光。当然，也可以使用自动曝光模式，但是由于AE算法需要经过一些帧的运算来收敛，前几帧图像的曝光效果会不好。+ − aemode：曝光模式设置+ − metime：手动曝光时间+ − meagain：手动模拟增益+ − medgain：手动数字增益+ − 用户还可以在自动模式下，使用expostate指令来读出当前曝光时间和增益值，作为参考。+ − 注：以上指令参考设置参考：[[CS-MIPI-X i2c/zh|CS系列模组参数配置脚本]]。+ − ====触发模式下的曝光时间==== − 对于CS-MIPI-SC132模组 + + − + + + + + − T<sub>exp</sub>:曝光时间+ − + − 相应的，在已知触发最小间隔时间的情况下，允许配置的最大曝光时间为：+ − '''''T<sub>expmax=</sub> T<sub>tgmin -</sub> T<sub>trans</sub>'''''+ − T<sub>expmax</sub> :最大曝光时间+ − 如果当前触发信号与前一次触发信号的时间间隔小与触发最小间隔时间，则传感器会忽略掉当前触发信号。+ − *'''T<sub>exp</sub> : 曝光时间'''+ − 用户可以通过自动和手动设置。+ − aemode为自动时，建议结合使用场景，限制最大曝光时间aetime。+ − aemode为手动时，通过metime设置曝光时间即可。+ − *'''T<sub>trans:</sub>一帧传输时间:'''+ − 一帧传输时间与当前分辨率模式有关。+ − + − + − + − + − + Line 97:
Line 106: − + − 触发总延迟时间 :触发总延迟时间为从触发信号输入到完整一帧图像通过mipi信号输出完成的时间。+ − + − + − + − + − + − + − + − +
Camera module Trigger Mode manual (view source)
Revision as of 20:41, 22 March 2021
, 20:41, 22 March 2021→Hardware Trigger
[[Camera module Trigger Mode manual/zh|查看中文]]
[[Camera module Trigger Mode manual/zh|查看中文]]
This AN mainly introduces the trigger mode of global shutter camera module, including hardware trigger and software trigger.
==Camera Trigger Mode User Manual==
This an mainly introduces the trigger mode of global shutter camera module, including hardware trigger and software trigger.
===Applicable Product models===
===Applicable Product models===
CS-MIPI-SC132
*[[CS-MIPI-SC132 Global Shutter Camera|CS-MIPI-SC132]]
===The concept of image synchronization mode===
===The concept of image synchronization mode===
====free running====
====Free Running====
In this mode, the camera module runs on its own.
In this mode, the camera module runs on its own.
====Hardware Trigger====
====Hardware Trigger====
In this mode,The Trigger IO pin is used as the trigger signal, and the module begins to expose and output the image after receiving the trigger signal.
In this mode,The Trigger IO pin is used as the trigger signal, and the module begins to expose and output the image after receiving the trigger signal.
Pin definition：[[CS-MIPI-SC132 Data Sheet/zh#.E6.8E.A5.E5.8F.A3.E5.92.8C.E5.BC.95.E8.84.9A.E8.AF.B4.E6.98.8E|CS-MIPI-SC132 DataSheet]]
Pin definition：[[CS-MIPI-SC132 Data Sheet#Interface .26 Pin list|CS-MIPI-SC132 Data Sheet]].
If using Xavier/TX2 , multiple cameras could be triggered by one signal.Pin definition：[[ADP-N1 Adapter Board Data Sheet|ADP_N1 Datasheet]].
Triggger edge, trigger delay and trigger debouncer attribute supported.
'''''triggeredge'''''：trigger edge
'''''tgdly'''''：trigger delay
'''Software Trigger'''
'''''tgdebncr'''''：debouncer
====Software Trigger====
In this mode，Use the I2C register to trigger an image.
striggerone:触发抓拍一张指令。
'''''striggerone'''''： trigger an image
Note：The above instructions refer to [[CS-MIPI-X i2c|CS Serial I2C setting]] .
===触发模式下的曝光控制和最高帧率===
===Exposure control and maximum frame rate in Trigger mode===
====触发模式下的曝光和增益的配置====
====Configuration of exposure and gain in Trigger mode====
In trigger mode, it is recommended that users use '''direct manual exposure'''. Of course, the automatic exposure mode can also be used,
but because the AE algorithm needs to go through some frames to converge, the exposure effect of the first few frames will not be good.
'''''expmode'''''：exposure mode setting
'''''dmetime'''''：direct manual exposure time
'''''dmeagain'''''：direct manual analog gain
'''''dmedgain'''''：direct manual digital gain
You can use the ''expostate'' instruction to read out the current exposure time and gain value in automatic mode as a reference.
Note：The above instructions refer to [[CS-MIPI-X i2c|CS Serial I2C setting]] .
====Exposure time and Transmission time in Trigger mode====
'''''T<sub>tgmin =</sub> T<sub>exp</sub> + T<sub>trans</sub>'''''
'''''T<sub>tgmin =</sub> T<sub>exp</sub> + T<sub>trans</sub>'''''
T<sub>tgmin</sub> :触发最小间隔时间
'''''T<sub>tgmin</sub>'''''：minimum trigger interval
'''''T<sub>exp</sub>'''''：exposure time
'''''T<sub>trans</sub>'''''：transmission time of one frame（from sensor to isp chip）
Accordingly, if the minimum trigger interval is known, the maximum allowable exposure time is:
T<sub>trans</sub>:一帧传输时间
'''''T<sub>expmax =</sub> T<sub>tgmin -</sub> T<sub>trans</sub>'''''
'''''T<sub>expmax</sub>'''''：maximum exposure time
If the time interval between the current trigger signal and the previous trigger signal is smaller than the minimum interval time,
the sensor will ignore the current trigger signal.
*'''''T<sub>exp</sub>''：exposure time'''
Users can set it to automatical or manual.
''expmode'' is auto : set max exposure time via a''etime''.
''expmode'' is manual : set exposure time via ''metime''.
*'''''T<sub>trans</sub>''：transmission time of one frame(from sensor to isp chip)'''
In trigger mode, the time it takes for an image to be output from sensor, and the next trigger is accepted after the image output is completed.
The transmission time of a frame is related to the current resolution mode.
{| class="wikitable"
{| class="wikitable"
|+触发模式曝光时间计算
|+Exposure time table in trigger mode
!工作模式
!Video Format
!'''''T<sub>trans</sub>'''''一帧传输时间(ms)
!'''''T<sub>trans</sub>'''''（ms）
!最大帧率
!Max Framerate
!保证最大帧率的最大曝光时间（ms）
!Maximum exposure time to guarantee maximum framerate（ms）
|-
|-
|1280x1080
|1280x1080
|0.68
|0.68
|}
|}
===触发模式下的延迟===
===Delay in trigger mode===
'''''T<sub>total</sub> = tgdly + T<sub>exp +</sub> T<sub>trans +</sub>T<sub>isp+</sub>T<sub>mipi</sub>'''''
'''''T<sub>total</sub> = tgdly + T<sub>exp +</sub> T<sub>trans +</sub>T<sub>isp+</sub>T<sub>mipi</sub>'''''
'''''T<sub>total</sub>''''' ：the total trigger delay is the time from the trigger signal to the complete image output through the MIPI signal. The following table is obtained by hardware measurement.
tgdly: 人为设置的触发延迟时间，以下测量均配置为0。tgdly仅针对Hardware Trigger有效。
'''''tgdly'''''：trigger delay time, the following measurements are configured to 0. ''tgdly'' is valid only for Hardware trigger mode.
T<sub>exp</sub> : 曝光时间，用户可以通过自动和手动设置，以下以expostate读出的实际值为准。
'''''T<sub>exp</sub>''''' exposure time，the following is based on the actual values read by ''expostate''.
T<sub>isp</sub>：模组处理时间+mipi一帧传输时间。
'''''T<sub>isp</sub>'''''：image signal processing time.
T<sub>mipi</sub>: MIPI传输时间。
'''''T<sub>mipi</sub>'''''：MIPI transmission time.
{| class="wikitable"
{| class="wikitable"
|+触发延迟测量
|+Trigger delay measurement result
!工作模式
!Video Format
!T<sub>exp</sub>曝光时间（us）
!''T<sub>exp</sub>''（us）
!T<sub>total</sub>触发总延迟时间（ms）
!''T<sub>total</sub>''（ms）
|-
|-
|1280x1080
|1280x1080