In this article it is proposed to repeat for use in the home device which performs automatic start of the engine (power generator) at the termination of electricity supply to consumers.
The device is designed based on microcontroller PIC16F84A.
The algorithm is the following:
Each cycle of the program controls the entrance to which is in the case of El. Energy in the network filed a logic "1". In the event of termination of supply, this input appears logical "0" and starts the cycle of automatic start of engine-generator.
1. The flap opening suction.
2. The ignition is switched on.
3. Starter, 3 cycles for 2 seconds, pause between cycles 5 seconds. (In case the engine wouldn't start, the cycle stops, so as not to kill the battery and the device switches to passive mode)
(If the engine is started, the starter is disconnected, the ignition remains on, after a pause of 10 seconds closed valve suction).
4. The unit switches to standby restore the flow electrical energy.
5. Upon restoration of supply, the generator is automatically shut off and everything returns to its original state.
(click to enlarge)
As actuators for controlling dampers benzo-choke was used, the lift lock kit car alarms. For the implementation of reverse flow in the circuit is used 2 relays. The reverse occurs when the polarity of the supply.
The transformers TR1 and TR2 - any low-power transformers at voltage 220 / 3.3 V Can be used on large voltage of the secondary, but at the end you have to put the resistor divider taking into account the resistance of the resistors R10, R11. The divider should provide a logic level "1" (4 - 5V).
Download firmware HEX
Author: Arthur (left-handed); Publication: www.cxem.net