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9樓
發(fā)表于 2009-9-22 11:19:22
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產(chǎn)品名稱：飛天貨車，
Product Name: Flying Truck
工作頻率：27.145MHz
Operation Frequency: 27.145MHz
工作原理：
How It Works:
TX:遙控器
TX: Remote Controller
IC U1 是一個(gè)由單片機(jī)編寫成的3功能IC,它與晶體管Q1，Q2和射頻發(fā)射器電路的其它部分的工作結(jié)合起來。該IC引腳6.8.9來控制向前飛行和左右轉(zhuǎn)彎的編碼輸出，編碼有引腳13輸入到27.145Mhz的發(fā)射電路，由IC 14腳提供一個(gè)高電平，給Q2.Y1,C9,L4,產(chǎn)生27.145Mhz的頻率，由IC的13腳輸出編碼由R4引入Q1，R1,C4,C8,進(jìn)行放大，然后通過C3.L2,L1,天線發(fā)射編碼到接收器
IC U1 is a 3-function IC coded by a microcontroller. It works together with transistor Q1, Q2, and other parts of the RF transmitter. The IC’s pin 6.8.9 controls the code output of flying forward, turning left, and turning right instructions. The code is output to the 27.145MHz transmitter circuit via pin 13. Pin 14 provides a high level to Q2, Y1, C9 and L4, which generate the 27.145MHz frequency. Pin 13 outputs the code which is fed to Q1, R1, C4, and C8 via R4 for amplification. The code is then transmitted to the receiver via antenna C3, L2, and L1.
天線是使用51cm的拉桿天線。該天線是電感耦合。電池供電是由6個(gè)1.5V AA
電池。
The antenna is a 51-cm inductive coupling telescopic antenna. The device is powered by six 1.5V AA batteries.
遙控器開關(guān)切換至充電檔位，由U2，R30,R31,組合成充電電路，U2,是一個(gè)穩(wěn)壓基準(zhǔn)IC,通過Q10.R24,對接收器進(jìn)行充電。充電電流大約在260mA。
When the remote controller is switched to “charge” position, U2, R30, and R31 will form a charging circuit. U2 is a regulating reference IC, charging the receiver via Q10 and R24. The charging current is 260 mA.
RX:接收器
信號(hào)有天線進(jìn)入，通過C20耦合，由Q3,R13,R12,進(jìn)行一級(jí)放大，通過C4耦合到L1,C2的振蕩電路，再經(jīng)過Q1,C3,L3進(jìn)行混頻，由R2 輸入到R3,C8，輸入到IC U2,U2是一個(gè)兩級(jí)的運(yùn)算放大器，經(jīng)過兩級(jí)放大后由R7輸出，然后輸入到U1，U1是一個(gè)由單片機(jī)編寫成的3功能譯碼IC，由2.5.6腳控制向前飛行和左右轉(zhuǎn)彎功能，其中電路中的Q4, Q5, Q7, Q8, R21, R22, R23, R24,是控制尾部馬達(dá)風(fēng)葉左右轉(zhuǎn)動(dòng)，Q2是控制向前飛行馬達(dá)轉(zhuǎn)動(dòng)。Q6 是用于充電保護(hù)，防止短路插座CON后造成電池短路。
RX: Receiver
The signal is received by the antenna, coupled by C20, and amplified by Q3, R13, and R12. The signal is then delivered to the L1/C2 oscillation circuit via C4, frequency-mixed by Q1/C3/L3, forwarded to R3 and C8 via R2, and output to IC U2, which is a two-stage operation amplifier. After the two-stage amplification, the signal is output to U1 via R7. IC U1 is a 3-function IC coded by a microcontroller. It’s pin 2.5.6 controls the functions of flying forward, turning left, and turning right. Q4, Q5, Q7, Q8, R21, R22, R23, and R24 control the fan’s left and right turning at the rear of the motor. Q2 controls flying forward motor rotation. Q6 is for charging protection, preventing batteries from short-circuiting.
接收天線是40cm的銅線，該天線是電容耦合。電池供電是一個(gè)3.7V的鋰電池。
The receiving antenna is a 40-cm capacitor-coupling copper rod. The device is powered by one 3.7V Li-ion battery. |
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發(fā)表于 2009-9-21 10:20:58
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發(fā)表于 2009-9-23 12:55:41