I have been trying to do a circuit with the following charcteristics:
The output is a siren connected to a 230 V 50 Hz network. The control circuit will use a 9 V battery as power supply and an operational amplifier must be used, the siren will be activated with a relay. The alarm will be activated when the temperature is higher than 60 degrees celsius. (The simulation was made with simulide)
I also used a BJT transistor to control the passing of the current, I think the control circuit and input circuit is correct, somehow the relay doesn't close and so the led doesn't switch on. What is wrong with my circuit?

Moderators note : expanded schematic.
The output is a siren connected to a 230 V 50 Hz network. The control circuit will use a 9 V battery as power supply and an operational amplifier must be used, the siren will be activated with a relay. The alarm will be activated when the temperature is higher than 60 degrees celsius. (The simulation was made with simulide)
I also used a BJT transistor to control the passing of the current, I think the control circuit and input circuit is correct, somehow the relay doesn't close and so the led doesn't switch on. What is wrong with my circuit?

Moderators note : expanded schematic.
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