| 摘要 |
A tyre air pressure detection system for rubber-tyred container gantry crane, comprising a plurality of sensor units each having a sensor unit ID installed at the inflating valve of each tyres or inside each tyres, and a central processing unit. Each of the sensor units comprises a MCU, a pressure sensor and a wireless transmitter circuit connecting to the MCU; the sensor unit detects the pressure of the tyre, and transmits the pressure information and the sensor unit ID to the central processing unit periodically; the sensor unit compares the current pressure with a predetermined pressure, and transmits the current pressure, an alarm information and the sensor ID to the central processing unit if the difference value exceeds a first threshold; the sensor unit compares the current pressure with the last detected pressure, and transmits the current pressure, an alarm information and the sensor ID the central processing unit if the difference value exceeds a second threshold; the central processing unit comprises a MCU and a wireless receiver circuit connecting to said MCU; the central processing unit receives the pressure transmitted from the sensor unit for processing, and outputs an alarm when the alarm information is received.
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