Diagnosing image flickering in Indigo LPR cameras due to potential LED sign interference. Troubleshooting steps for retail environments.
Knowing the cable type will help determine shielding requirements.
Proximity to the LED sign is a key factor in EMI assessment.
A recently installed LED sign might indicate a new source of interference.
Image flickering in cameras can be caused by electromagnetic interference (EMI) affecting the camera sensor or signal transmission. LED signs can emit significant EMI. The camera's voltage regulation circuit or the data transmission cable (e.g., Ethernet or coaxial) could be susceptible. Signal attenuation in long or damaged cables may exacerbate the problem. Electrostatic discharge (ESD) can also temporarily disrupt image processing.
The Indigo LPR camera is exhibiting image flickering. The issue coincides with the operation of a nearby LED sign.
Safe Handling: Always disconnect power before handling cables. Avoid working in wet conditions. Ensure the camera's power supply is compatible with the local voltage. Static discharge can damage electronic components; ground yourself before touching the camera or cables. Do NOT attempt to open the camera casing due to potential anti-tamper mechanisms.
Regularly inspect camera cables for damage and ensure connections are secure. Keep the camera lens clean. Minimize cable strain. Ensure proper grounding. Maintain adequate distance from potential EMI sources (e.g., LED signs, power lines).
Try using a ferrite choke on the camera's power and data cables to reduce EMI. Experiment with different ferrite choke positions for optimal effectiveness. If the camera supports it, adjust the camera's refresh rate to minimize flicker perception.