Hi everyone,
I'm designign a robot lawn mower. The problem is to make it understand where the boundary is. Doing some research i understand that the best method is to bury a wire in the ground in which pass an AC current and measure the variable magnetic field generated by the wire with a coil mounted in the robot. I tried with the 230V @ 50Hz of m home grid but the magnetic field was to low to be measured at the distance i need. so i understand that i need more current and a higher frequency than the 50Hz and 1mA i tried before. I'm looking for a circuit capable of generating a sine wave at max 50kHz and at 5-10 V and 1-2 amps.
thanks in advance
I'm designign a robot lawn mower. The problem is to make it understand where the boundary is. Doing some research i understand that the best method is to bury a wire in the ground in which pass an AC current and measure the variable magnetic field generated by the wire with a coil mounted in the robot. I tried with the 230V @ 50Hz of m home grid but the magnetic field was to low to be measured at the distance i need. so i understand that i need more current and a higher frequency than the 50Hz and 1mA i tried before. I'm looking for a circuit capable of generating a sine wave at max 50kHz and at 5-10 V and 1-2 amps.
thanks in advance