Frame Drop issue
Hi, in our current setup, we have two Intel RealSense D410 cameras connected to a Raspberry Pi 4B. One camera is directly connected via a 0.25m USB 2.0 cable in a USB 3.0 port, while the other uses a 5m BAFO USB 2.0 extension cable in a USB 2.0 port. During continuous operation, we've observed that the Raspberry Pi temperature rises to 85 degrees, causing the Intel RealSense D410 frame rate to drop below 15 FPS in both cameras, resulting in camera freezing. To recover, we manually replug the camera for communication. Despite updating the Intel RealSense D410 firmware to version 5.15.1.0, the issue persists, and attempts to address it by rebooting the Raspberry Pi through software have been unsuccessful. The cameras appear to get stuck, and we've encountered the below-mentioned errata, detailed in this link. We would greatly appreciate any advice or suggestions from the community on how to resolve these camera-stuck instances. Thank you for your assistance.
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Hi Sundaramoorthi S Usually, only one RealSense camera per Raspberry Pi board is used, like in the image below. There are single-board computers that are better suited to having two RealSense cameras attached and active simultaneously, such as Up Squared and Nvidia Jetson.
You could check whether your issue might be caused by two cameras over-burdening the Pi's CPU by having just one camera attached and seeing whether the Pi's temperature is still 85 degrees.
Another possibility would be a bad USB cable causing overheating of the camera by supplying too much power, and some of that heat getting passed back to the Pi. An easy way to check for overheating is to let the camera run for a few minutes after start-up and then touch the camera casing. If it is hot to the touch then it is likely overheating.
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Hi MartyG,
When using a single Intel RealSense D410 with a Raspberry Pi, we've observed that the ASIC temperature of Intel realsense D410 is maintained at 50 degrees Celsius. We are concerned about whether this will impact the sensor's performance.
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50 degrees C is not ideal. Above 42 degrees there will be an increased risk of the image being negatively impacted. The laser safety mechanism will not turn off the camera's laser unless the projector temperature exceeds 60 degrees C though. The camera can continue to operate with the laser disabled but depth image quality would likely reduce and the infrared image become darker.
You could investigate the possibility of adding a heat sink component to the back of the D410. This is a block of metal that draws heat away from electronics, such as the D410 board. Page 119 of the current edition of the data sheet document for the 400 Series cameras provides advice about heat sinks.
https://dev.intelrealsense.com/docs/intel-realsense-d400-series-product-family-datasheet
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