| 摘要 |
A multifunctional automotive remote control unit includes a housing and a bilateral control circuit positioned within the housing. The housing includes a plurality of operating keys and a LCD display that are electrically coupled to the bilateral control circuit, and one of the operating keys serves as a control key for choosing a desired function. In addition to the circuit required by the automotive remote control unit, the bilateral control circuit further includes a signal-receiving unit for receiving signals transmitted by the tire pressure detector on the tire and then transmitting the received signals to a microprocessor for further processing, thereby displaying the tire pressure value on the LCD display 13 and giving out a warning signal in case of abnormal tire pressure so that a tire pressure displaying and warning unit is created. The remote control unit can be switched as desired by the driver between the automotive remote control unit and the tire pressure displaying and warning unit by use of the control key. In this way, the tire pressure displaying and warning functions are integrated in a body without increasing the whole volume. Accordingly, the cost can be reduced while a convenient use is ensured.
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