More and more things in life are linked with intelligence, and the function of the mobile phone is even more vivid. The intelligent lighting system can realize the automatic control of the light and can automatically adjust the brightness of the light according to the surrounding environment. But if you don't buy a smart light and you want to use a cell phone to control the light, what exactly should you do?
Prepare something:
Accepted using a mobile phone, Switching Diode, type is "1N4148" (this diode is fast response, low power consumption) capacitance, 100UF number, enough voltage 10V, triode, integrated IC CD4017 (decimal counter).
practice:
1, open your phone, the external speaker output line to connect the "rectifier filter circuit" in the middle of a capacitor, 1 ~ 10UF. Rectifying filtering - using switching diodes and capacitors, the circuit is very simple, remember to do bridge rectifier, circuit Baidu.
2, rectifier filter circuit out of the "triode trigger circuit"
This triode trigger circuit is actually a switch circuit, 9014 works in the cut-off state, the base directly connects the output of the rectifier filter, Baidu also has, this circuit is also very simple.
3. The collector of 9014 is connected to the CP of 4017.
4017, counter, there is a pulse input (CP), there are 10 outputs, each pulse, 10 output (Y0 ~ Y9) and only one will have an electrical output (we call high), and The order is Y0 to Y9.
4. Connect the 4017 CR pin to the Y2 pin
The reason for this is that you only control the on and off of the lamp, leaving Y0, Y1 is enough, CR is reset, if Y0 is on, Y1 is off, and when it jumps to Y3, it will reset. Directly reset to Y0, so it is open, closed, opened or closed.
These CP feet, CR feet, Y0 ~ Y9 (10 feet), you can Baidu 4017 pictures, there is write, look at the corresponding number is a few feet.
5, remember that 4017 is to supply! Specific voltage parameters, please Baidu, there are triodes Oh, of course, you can use the battery. . But the voltage must match, you can also directly take 220, after all, you control the lights, people's voice control circuit board is to take the power directly, pay attention to safety.
6, I only provide how to control the method, ideas, the specific relay control part of the electric light please Baidu, I recommend using SCR control
7, after doing a good job, accept the mobile phone to download a sine wave audio, the frequency you set, not too low on the line; then use this audio as the phone's ringtone.
Principle explanation:
When you call the receiving mobile phone anywhere, you receive a sine wave at the output end of the mobile phone's horn, and a certain DC voltage is obtained by rectifying and filtering. This dc voltage puts the triode into saturation (triode switching circuit must be designed and set up. The electrode resistance is selected, the triode can be easily saturated, and you can all use Baidu's). The triode collector outputs a low level to the CP side of 4017. This is a falling edge (from power to no charge). The 4017 is generally The rising edge triggers, so there is no action at the moment. At this time, Y0 is powered, and the others are not (so the control line of your lamp is connected to Y1); after the phone is connected, you ring a pair of sounds and you can hang it. Lost, at this time, the speaker output is not output, the transistor from low to high, this is a rising edge (no power to electricity), 4017 is triggered, and action, Y0 no output, jump To Y1, the light is on at this time; turn off the light, make another call, ring twice, hang up, turn off the light.
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