Vegetable greenhouse temperature detection control circuit
The vegetable greenhouse temperature detection control circuit is designed to maintain optimal growing conditions by monitoring and controlling the temperature within a greenhouse environment. The core component, the SL234M temperature sensor, provides a reliable voltage output that corresponds to the ambient temperature. This output is then processed through a multi-stage amplifier, consisting of operational amplifiers such as the LM324 and LM358, which enhance the signal for accurate comparison against a predetermined set point.
The NE555 timer circuit operates in a comparator mode, receiving the amplified sensor output and the reference voltage. When the sensor output exceeds the set value, the NE555 activates a relay, which subsequently controls the power supply to the greenhouse heater. This feedback mechanism ensures that the temperature remains within the desired range, thereby promoting optimal plant growth.
To visually communicate the current temperature status, an LED display driver circuit is integrated into the system. The display provides real-time feedback on temperature levels, allowing for quick assessments and adjustments if necessary. The entire circuit is designed with reliability and efficiency in mind, ensuring that the greenhouse environment can be maintained with minimal human intervention. This automated approach not only enhances plant health but also optimizes energy consumption within the greenhouse.Vegetable greenhouse temperature detection control circuit Greenhouses temperature detection control circuit, it is mainly by the temperature sensor SL234M, operational amplifier LM324, LM358, dual time base circuit NE555, relay J and the like of the display driver circuit. Equivalent temperature sensor output voltage by multi-stage amplifier after the amplifier (6) for comparison with the set value, and then go through the NE555 control relay, and then the greenhouse heater control, while the temperature range by emitting greenhouse diode (LED) display.
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