122 lines
5.0 KiB
Markdown
122 lines
5.0 KiB
Markdown
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---
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id: "a42566e46c7cc90a"
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title: "AHD摄像头 — LPA3588 v1.3.3 documentation"
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url: "http://wiki.neardi.com/wiki/LPA3588/zh_CN/docs/module/ahd_camera.html"
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favicon: "http://wiki.neardi.com/favicon.ico"
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tags: []
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createdAt: "2026-03-27T03:34:01.857Z"
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updatedAt: "2026-03-27T03:34:18.324Z"
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contentType: "markdown"
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version: 1
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publishedTime: "2026-03-27T03:34:01.842Z"
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---
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# AHD摄像头[](#ahd "Permalink to this heading")
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支持8路航插接口AHD摄像头输入[点击购买](https://item.taobao.com/item.htm?spm=a1z10.5-c-s.w4002-24652054011.15.452135f51yoyO7&id=713917157868)，每路支持`720/1080p@25/30fps`分辨率。
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## 电源适配器[](#id1 "Permalink to this heading")
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## AHD摄像头连接图片[](#id2 "Permalink to this heading")
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## 更新固件[](#id3 "Permalink to this heading")
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`20230314`版本之前默认不带AHD\*8功能，通过`uname -a`查询版本；
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若不符合，烧录 [最新标准固件](http://neardi.com/cms/index/productsd.html?id=9&title=LPA3588) 烧录方法参阅 [《使用Type-C线升级固件》](http://wiki.neardi.com/wiki/LPA3588/zh_CN/docs/upgrade.html)一章。
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## AHD摄像头对应设备节点[](#id4 "Permalink to this heading")
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<table><thead><tr><th>AHD</th><th>设备节点</th></tr></thead><tbody><tr><td>AHD1</td><td>/dev/video11</td></tr><tr><td>AHD2</td><td>/dev/video12</td></tr><tr><td>AHD3</td><td>/dev/video13</td></tr><tr><td>AHD4</td><td>/dev/video14</td></tr><tr><td>AHD5</td><td>/dev/video3</td></tr><tr><td>AHD6</td><td>/dev/video2</td></tr><tr><td>AHD7</td><td>/dev/video1</td></tr><tr><td>AHD8</td><td>/dev/video0</td></tr></tbody></table>
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## 修改测试脚本[](#id5 "Permalink to this heading")
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修改`/rockchip-test/camera/camera_rkisp_test.sh` 打开`camera_rkisp_test.sh`，然后去掉里面的最后一行后加入：
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```
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DISPLAY=:0.0 gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink&
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gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video2 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video3 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video11 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video12 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video13 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink &
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gst-launch-1.0 v4l2src device=/dev/video14 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink
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```
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若单独测试一路AHD，务必加上sudo执行：
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```
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sudo gst-launch-1.0 v4l2src device=/dev/video11 ! video/x-raw,format=NV12,width=640,height=480, framerate=30/1 ! fpsdisplaysink
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```
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## 验证测试脚本[](#id6 "Permalink to this heading")
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```
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sudo /rockchip-test/camera/camera_rkisp_test.sh
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```
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执行成功结果：
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```
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neardi@LPA3588:~$ sudo /rockchip-test/camera/camera_rkisp_test.sh
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Start RKISP Camera Preview!
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Setting pipeline to PAUSED ...
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Pipeline is live and does not need PREROLL ...
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Pipeline is PREROLLED ...
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Setting pipeline to PLAYING ...
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New clock: GstSystemClock
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Setting pipeline to PAUSED ...
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...
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Redistribute latency...
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0:22:57.3 / 99:99:99.
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```
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## FAQ[](#faq "Permalink to this heading")
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### AHD摄像头pin脚如何定义的？[](#ahdpin "Permalink to this heading")
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### AHD摄像头为什么不出图？[](#id7 "Permalink to this heading")
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#### 简单排查[](#id8 "Permalink to this heading")
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* 摄像头确保是`720/1080p@25/30fps`分辨率。
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* 8路摄像头使用同一分辨率和帧率；不要混用，例如AHD1接720p，AHD2接1080p。
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* 不能热插拔。
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* 若固件是自行编译的，确保SDK升级到最新的，`V4.0`及以上。
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* 检查电源，使用`DC 9-36V`电源。
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* 测试Neardi配套的摄像头，再对比自行购买的摄像头。
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#### 抓图排查[](#id9 "Permalink to this heading")
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使用v4l2-ctl工具抓图测试
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```
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# AHD1抓图
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v4l2-ctl -d /dev/video11 --set-fmt-video=width=1920,height=1080,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/ahd.out --stream-count=1 --stream-poll
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```
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抓图正常返回结果，否则为异常：
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```
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<<<<
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```
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### 有没有C++的demo？[](#c-demo "Permalink to this heading")
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参考 [neardi\_cam\_demo](https://gitee.com/neardi-dev/neardi_cam_demo)
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