Hey, don’t say that! Looking at the LED screens with changing characters on the roofs of taxis all over the street every day, have you ever wondered who is in charge of this thing? Last month, a driver brother complained to me that the screen in his car suddenly started playing grilled fish commercials in the middle of the night, scaring the passengers into thinking they had switched to food delivery... Today we will clarify this matter!

Three core components of the control system

Let me show you a real thing first: During the Tokyo Olympics last year, the LED screens of the local taxi fleet collectively broadcast event information. Guess how it was controlled? It all depends on the cooperation of these three things:

1. ​​Main control module​ ​(Installed just behind the passenger glove box)

• Equivalent to the "brain" of the entire system"
• Now the storage capacity of mainstream models has reached 128G (can store enough content for 3 months)

1. ​​Communication box​ ​(usually hidden on the left side of the trunk)

• Supports 4G/5G dual-mode transmission (network speed lags? Doesn't exist! )
• Those with physical switches are genuine products (to prevent remote hijacking)

1. ​​power manager​​

• Intelligent distribution of on-board battery power (ensuring no delay in starting the car)
• Automatically shut off power when encountering voltage fluctuations (this is so important! )

Three special skills of remote control

Last time I met a driver who turned the LED screen of his car into a confession wall... Actually, the formal system is not so casual. It has to go through these three levels:

​​Here comes the point​ ​: Nowadays, all advanced systems have​ ​Triple verification​ ​——To change the content, you must verify the SIM card number, device code, and dynamic password at the same time, which is more stringent than bank transfer!

Five things drivers should pay attention to

Last year, a group of taxi screens in Seoul were infected with the virus. Investigation found that the drivers shared the same password to save trouble... This incident reminds us:

• ​​Never set the password to​ ​: License plate number, mobile phone last number, 123456 (these three combinations account for 73% of stolen cases)
• Regularly check the heat dissipation vents of the control box (too much dust may cause the machine to crash)
• If you see something wrong with the screen flicker frequency (especially if it drops from 1920Hz to below 1440Hz), report it for repair immediately.
• Remember to turn on the waterproof mode when it rains heavily (although it is marked with IP65 protection, no one can withstand being soaked in water)
• Be sure to disconnect the control module when replacing the battery (instantaneous current can burn the chip)

Let me tell you, this taxi LED screen is just like a smartphone - it is a new device with intelligent brightness adjustment (for example, it can automatically adjust 4000-7500cd/m² according to the ambient light), supports quick disassembly and assembly, and coupled with 24-hour online technical support, it is worry-free! If you have ever seen the kind of high-end products with aluminum-magnesium-zinc alloy boxes, you will know what "the heavy rain will not damage, the bumps will not loosen". Remember, 87% of failures are due to the use of unreliable control systems, so don’t let this get you down!

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