Perhaps we can design a device that combines temperature sensors with pyrotechnic components. When the temperature sensor senses a change in temperature, it will send a detonation signal to the electronic detonators that make up the initiating component, and then the electronic detonators will detonate. How can this process be achieved?

2 hours ago, zhangchang said:

Perhaps we can design a device that combines temperature sensors with pyrotechnic components. When the temperature sensor senses a change in temperature, it will send a detonation signal to the electronic detonators that make up the initiating component, and then the electronic detonators will detonate. How can this process be achieved?

Central heating thermostat?

It’s curious that you specify a detonator when it could be any sort of electronics.

But as exchemist suggests, a common thermostat will do this, as will thermocouple and thermistor circuits. 

If it's a detonator, it only needs to work once.
So it's a slightly different scenario.

But, since it's a detonator, I'm not going to help.