Temperature detection control circuit for vegetable greenhouses
Source: InternetPublisher:ghaytweyhtoo Keywords: Control circuit temperature detection temperature sensor relay Updated: 2021/02/28
Temperature detection control circuit for vegetable greenhouses
The temperature detection and control circuit of the vegetable greenhouse is mainly composed of the temperature sensor SL234M, operational amplifiers LM324 and
LM358, dual time base circuit NE555, relay J and display drive circuit. The temperature equivalent voltage output by the temperature sensor
is compared with the set value in the amplifier (6) after being passed through a multi-stage amplifier, and then used to control the relay through the NE555 , and then the greenhouse heater is controlled.
At the same time, the temperature range in the greenhouse is passed through the luminous Diode LED shows up.
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