Choosing the right host platform is essential for maximizing camera performance in the field of vision systems. Although they are necessary, parts like sensors, ISPs, and USB controllers cannot function independently. Applications that enable efficient camera operation in a variety of vision systems require a strong host processor interface.
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Common Host Platforms for Vision Systems
PC Platforms
PC platforms are widely utilized in Vision Systems, typically based on Intel or AMD processors. These systems often include USB 3.0 and USB 2.0 ports, Ethernet connections, and various other interfaces. They usually run on Windows or Linux operating systems, offering versatility for different applications within Vision Systems.
ARM Platforms
ARM platforms are ideal for portable, compact, and low-power applications in Vision Systems. They come in various configurations, including ARM7, ARM9, ARM53, and ARM15, typically operating on Linux or Android OS. These platforms cater to scenarios that require efficient processing in smaller form factors, making them suitable for specific applications within Vision Systems.
At Regami, we recommend using USB-based camera solutions for PC platforms and MIPI/Parallel interface-based camera solutions for ARM platforms to ensure optimal integration into your Vision Systems.
Advantages of USB and MIPI/Parallel Interfaces
USB Interfaces' Advantages for Vision Systems
Standards governing USB interfaces specify how they must be implemented in both software and hardware. Because of the simplicity and scalability made possible by this standardization, upgrading and integrating Vision Systems into other applications is made simpler.
In contrast, MIPI or parallel interfaces primarily standardize the signaling method, lacking regulations for hardware and software aspects. This can lead to inconsistencies due to variations in connectors and drivers between implementations. Despite this, MIPI and parallel interfaces are preferred for ARM-based systems due to their superior bandwidth, lower overhead, enhanced reliability, and reduced power consumption. Many ARM processors support only USB 2.0, making their USB implementation less robust than that of PC platforms.
Considerations for PC Platforms in Vision Systems
When implementing Vision Systems on PC platforms, it is important to consider the following factors:
Host Controller: For USB cameras, consult the USB controller chipset vendor's preferred list of USB host controllers to ensure compatibility. Always check with the camera vendor for specific recommendations.
Bandwidth: Assess the resolution and frame rate requirements for your application. Calculate the necessary bandwidth to confirm that the USB on the host can adequately support it within your Vision Systems.
Power Requirements: Consider the power needs of the camera. USB 2.0 ports support 5V/500mA, while USB 3.0 ports support 5V/900mA. If the camera requires more power, a powered hub or external power source may be necessary.
Multiple Cameras: If your application requires multiple cameras, ensure you account for how many can be integrated with each USB host controller. Monitor potential issues related to:
Power: USB cameras are typically bus-powered, which may lead to power demands exceeding the host's capacity. In such cases, powered hubs are recommended.
Bandwidth: The cumulative bandwidth requirement of all cameras may surpass the host controller's capability. To address this, consider reducing the resolution or frame rate of each camera or adding more host controllers.
Considerations for ARM Platforms in Vision Systems
For ARM platforms, here are essential points to consider when implementing your systems:
USB Cameras
Host Controller: The USB implementation on ARM platforms often lacks the robust priority levels found in PCs. Consequently, the effective bandwidth achieved with USB cameras on ARM is generally lower than that on PC systems.
Power Requirements: USB 3.0 cameras require 5V and 900mA. Verify that the ARM platform can accommodate this power requirement for effective operation in your Vision Systems.
Multiple Cameras: Similar to PC platforms, if multiple cameras are necessary, keep the following in mind:
Power: As USB cameras are bus-powered, the total power demand may exceed what the host can support, necessitating powered hubs.
Bandwidth: The overall bandwidth requirement may surpass the host controller’s capacity, requiring adjustments to resolution or frame rate or an increase in host controllers.
Parallel/MIPI Cameras
MIPI/Parallel Interfaces: Look at how the ARM processor implements MIPI/Parallel, paying particular attention to the number of bits (for parallel) or lanes (for MIPI). This will affect your vision systems' hardware design and the highest resolution/frame combination that can be achieved.
Clock Rate: When figuring out the bandwidth support, the clock rate is essential. Certain setups can achieve bandwidth equivalent to a 2-lane MIPI arrangement by supporting 4-lane MIPI at a lower clock rate.
Multiple Cameras: Check the number of cameras that can be linked when integrating them using MIPI/Parallel interfaces. Make sure to review the specs before designing your solution because some ARM devices provide 2-4 MIPI ports or two parallel interfaces.
Examine the clock rate for every MIPI interface. In some circumstances, every interface might have its clock, enabling simultaneous maximum bandwidth. However, employing several interfaces may reduce the available bandwidth by half in other situations when the clock is shared.
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Empowering Your Vision Systems with Tailored Solutions
Our specialty at Regami Solutions is comprehending your system and application requirements. Our group is committed to designing the best solutions for your requirements. We offer specialized software and hardware development services, with a focus on digitalization, automation, and embedded design for a range of sectors.
To make sure your Vision Systems are prepared for success, we concentrate on cutting-edge solutions like edge AI, robotic process automation, and cloud apps.