第1个回答 2008-06-02
This article according to the tire internal pressure and the temperature to the tire operational performance influence, in has analyzed the domestic external pressure observation system's successful experience and in exhaustively the advanced conception foundation, the union practical application's concrete technical performance request, the research which in view of the direct -like automobile tire pressure, temperature monitoring system (TPMS) carries on. the system take the high performance high speed monolithic integrated circuit C8051F series micro controller and antijamming ability strong pressure survey chip SP12 and wireless radio frequency receiving and dispatching chip nRF401 as a core, according to the functional system which completes divides into the installment and places in the automobile tire internal launching system in cab's receiving system. The choice integration degree is high, antijamming ability strong primary device; The majority of time let the system be in the dormancy pattern; In the launching system uses the digital filtering to reduce the random disturbance; In the wireless communication uses “the watch-dog” the technology and so on to increase the software antijamming ability and so on.
绝对正确
第2个回答 2008-06-02
This article according to the tire internal pressure and the temperature to the tire operational performance influence, in has analyzed the domestic external pressure observation system's successful experience and in exhaustively the advanced conception foundation, the union practical application's concrete technical performance request, the research which in view of the direct -like automobile tire pressure, temperature monitoring system (TPMS) carries on. the system take the high performance high speed monolithic integrated circuit C8051F series micro controller and antijamming ability strong pressure survey chip SP12 and wireless radio frequency receiving and dispatching chip nRF401 as a core, according to the functional system which completes divides into the installment and places in the automobile tire internal launching system in cab's receiving system. The choice integration degree is high, antijamming ability strong primary device; The majority of time let the system be in the dormancy pattern; In the launching system uses the digital filtering to reduce the random disturbance; In the wireless communication uses “the watch-dog” the technology and so on to increase the software antijamming ability and so on.
第3个回答 2008-06-02
This text according to the pressure and temperatures of the tire inner part to the influence that the tire uses the function, at analyzed the successful experience of the domestic and international pressure monitor system and the foundation of the advanced speculations in details up, combine the actual applied concrete technique function request, aim at the research that direct type automobile tire pressure, the temperature monitor system( TPMS) carry on.
System with the strong pressure of a machine of high performance C8051F series tiny controller and the anti- interference abilities measures the chip SP12 and the lead-in radio frequencies to receive and dispatch the chip nRF401 for core, is divided in to install according to the finished function system in the blast-off system and settings of the automobile tire inner part at drive to receive the system indoorly.The choice gather turn the degree high, the anti- interference ability a machine piece;Big and parts of time lets the system be placed in the dormancy mode;Shoot to adopt the numerical wave of in the system to lower the random interference;Lead-in correspondence medium adoption" watchdog" technique etc. increment software anti- interference ability etc..