Underwater aquaculture camera are long-term immersed in water environments, vulnerable to microbial adhesion, water corrosion, external collisions, and other impacts. Regular daily maintenance is required to extend the equipment's service life (usually reducing the failure rate by more than 60%). Specific maintenance points are divided into "daily, weekly, and monthly" cycles:

1. Daily Maintenance: Quick Inspection of Basic Operating Status

1. Image and Function Self-Inspection: Check if the real-time image is clear (no blurriness, discoloration, or obstruction) and if functions such as infrared fill light and AI recognition (e.g., dead fish/net damage recognition) are triggered normally. If the image is partially blurry, it may be due to dirt attached to the lens; if functions are unresponsive, first check the equipment's power supply and network connection (e.g., whether the cable connector is loose).
2. Cable Appearance Check: Inspect the cable along its path (from the camera to the shore control cabinet) for damage or signs of dragging. Especially in sea cage aquaculture scenarios, confirm that the cable is not entangled with fishing nets or attached by marine organisms (e.g., barnacles) to prevent short circuits caused by water ingress through cable damage.
3. Storage and Data Cleaning: Delete redundant video data from local/cloud storage (only retain key monitoring clips) to avoid failure in recording new data due to full storage. Meanwhile, check if the storage device (e.g., SD card, hard drive) has error prompts and replace faulty storage media in a timely manner.

2. Weekly Maintenance: In-Depth Cleaning and Component Inspection

1. Scenario-Specific Cleaning:
   • Marine Scenarios (Cage Aquaculture): Rinse the camera body and lens with fresh water (to remove salt deposits, algae, and barnacle larvae). Wipe the lens gently with a dedicated optical lens cloth (lint-free cloth) to avoid scratching the coating. Clean sediment from gaps in the body (e.g., waterproof connectors, shell interfaces) with a soft brush, then apply a small amount of food-grade silicone grease (to enhance sealing and prevent seawater ingress).
   • Freshwater Scenarios (Ponds/Seedling Tanks): Focus on removing moss and plankton attached to the lens and body. Soak the camera in warm water (below 50℃) for 10 minutes (to soften attachments), then wipe gently with a sponge. Do not use hard brushes or chemical cleaners (which may corrode the anti-fouling coating).
2. Sealing Inspection of Waterproof Components: Check if the O-rings of the lens cover, waterproof connectors, and cable interfaces are deformed or aged (e.g., cracks, loss of elasticity). If the O-rings fail, immediately replace them with spare parts of the same model (it is recommended to reserve compatible silicone O-rings in advance to avoid delays in emergency procurement).
3. Reinforcement of Fixed Structures: Confirm that the camera's mounting base (e.g., hanger, magnetic base) is secure. Especially in sea cage aquaculture, re-tighten screws (to prevent device displacement caused by cage shaking); for cameras installed with suction cups in ponds, check if the suction cup's adhesion has decreased (clean the suction cup's contact surface before repositioning).

3. Monthly Maintenance: Comprehensive Performance Testing and Protection Upgrades

1. Core Parameter Testing: Use professional tools to test key performance: test waterproof performance with a pressure tester (1.5 times the actual water depth for freshwater models, 2 times for marine models), check the infrared lamp's illumination intensity with a lux meter (it should remain above 80% of the initial value; replace the lamp bead if it is lower), and verify image clarity with a resolution test chart (to avoid reduced monitoring accuracy due to lens aging).
2. Replacement of Corroded or Worn Components:
   • Marine Scenarios: Inspect the 316L stainless steel shell and anti-salt spray coating for rust spots. If local rust occurs, gently polish it with fine sandpaper and touch up with dedicated anti-salt spray paint; if the lens's anti-fouling film peels off, replace the lens or re-coat it (to prevent rapid attachment of marine organisms).
   • Freshwater Scenarios: Check if the anti-microbial coating on the body is intact. If moss adheres extensively and is difficult to clean, re-spray with an anti-algae coating (e.g., titanium dioxide coating to inhibit microbial growth).
3. Firmware and System Updates: Connect to the device management backend to upgrade the camera's firmware (fix known vulnerabilities and optimize AI recognition algorithms) and synchronously update the remote control APP. Back up historical data before updating to avoid data loss; re-test all functions after updating to ensure compatibility and stability.

4. Emergency Maintenance for Special Scenarios

• Before Typhoons/Heavy Rains: Reinforce the camera and cables in advance (e.g., add wind-resistant ropes) and temporarily lift the device to shallow water (e.g., from 10-meter water depth to 2 meters in sea cage aquaculture) to prevent equipment detachment caused by strong water flow impact;
• In Case of Water Ingress/Short Circuit: Immediately cut off the power supply, remove the camera, and disassemble the waterproof shell (only operated by professionals). Wipe the internal circuit board with anhydrous alcohol, dry it, replace all O-rings, and re-test the waterproof performance before reusing the device.

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