飛思卡爾輪胎壓力監(jiān)控系統(tǒng)(TPMS) 在線座談問題解答(3)
[ 問題 11 ] 除了鋰電池供電的方案,還有沒有其它的方案或思路?
[ 答案 11 ] 請(qǐng)參考飛思卡爾 application note AN1951: http://www.freescale.com.cn/Applications/automotive_tire.asp
[ 問題 12 ] 飛思卡爾方案有什么優(yōu)勢(shì)?
[ 答案 12 ] Freescale fully integrated TPMS solution integrate Temp and Pressure sensors, MCU with 2-LF channel, G-Swith (optional) and RF transmitting into one chip. GE integration without G-swicth and RF on chip.
[ 問題 13 ] 在汽車輪胎內(nèi)安裝的檢測(cè)電路及RF電路的主要電路是什么？
[ 答案 13 ] 整個(gè)RF主要有,天線,發(fā)射器.主要電路可參考 MC33493 data sheet: http://www.freescale.com.cn/Applications/automotive_mc33493.asp檢測(cè)電路主要有sensor,主要電路可參考MPX8020A data sheet: http://www.freescale.com.cn/Applications/automotive_tire.asp
[ 問題 14 ] 飛思卡爾的傳感器能在什么樣的惡劣環(huán)境下工作
[ 答案 14 ] Please refer to our app notes AN2008 (MPXY80XX 應(yīng)用安裝) from following website. But our sensor's (MPXY80xx family) integrated filter provides media and humidity protection needed for demanding automotive environments. The devices have been successfully qualified to a stringent list of qualification tests based on the Automotive Electronics Council (AEC) - Q100 requirements. These tests include accelerated humidity testing, long-term pressure and temperature cycling, as well as exposure to chemicals commonly found in Tire Pressure Monitoring applications. Our sensors are made with quality automotive parts, and tested to acceleration and shock forces of up to 2000 g.MPXY80XX 應(yīng)用安裝 Application Note website: http://www.freescale.com.cn/Applications/automotive_tire.asp
[ 問題 15 ] 遙感模塊的發(fā)送功率有多高?
[ 答案 15 ] 遙感模塊的發(fā)送功率大約有 10mW (0dBm)
