LED display products have been anti-acid rain, anti-salt spray, waterproof, moisture, dust, anti-burning, anti-corrosion treatment, through salt spray test, the test results show that: products meet the national industrial standards, in line with salt spray test requirements, Even in the maritime climate conditions, the screen can also be long-term normal use.
Three anti-measures: all the circuit board in the production after the completion of the use of special electronic three anti-paint treatment, and smear flame retardant materials, so that it has a dust, moisture, corrosion resistance, flame retardant properties.
Pixels and modules are sealed with insulating rubber rings to prevent moisture penetration.
Screen outside the decoration by the corrosion resistance of the flame retardant material is very good quality aluminum-plastic plate production, plate between the patchwork tightly filled with high quality weathering glue.
The gap between the decoration and the module is filled with foam sticks and filled with high quality weathering glue to prevent water vapor from penetrating.
All product shell protection level to reach the pre-discharge IP65 above.
1 temperature control and dehumidification
Screen inside the installation of smoke, temperature detectors, connected to the PLC control system monitoring screen status. When the internal temperature of the screen due to long-term operation of the larger temperature or humidity due to climate reasons, the system can open the fan and air conditioning. In case of special circumstances PLC system can automatically cut off the screen power and send an alarm signal
2 electrical safety
The electrical safety performance assurance measures are to configure the PLC controller. Controlled by a PLC power distribution cabinet, boot a number of steps will display the screen to open, to suppress the switching power supply when the start of the impact current. The PLC receives the system command to generate the action logic and returns the contact logic status and fault information to the system. The network implements the power supply loop control and monitoring system. Protection measures for the distribution cabinet include overcurrent, short circuit, open circuit, overvoltage, undervoltage, temperature is too high, smoke sensing, and has a fault indication, abnormal alarm in a timely manner. Network power supply protection equipment UPS power supply time of at least 20 minutes, in the event of a power failure, there is sufficient time for the system operator to perform the correct processing action.
It is also necessary to use a signal ground independent of the protection ground for use by the network system and the distributed control system. Power grid lightning protection to rely on the scene to solve the power distribution system.
3 screen body of the cooling system
Attention to the choice of components, such as power supply, driver IC, are selected in the higher temperature range of normal work;