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Agricultural shed and greenhouse three-grade temperature monitoring device

A technology for agricultural greenhouses and monitoring devices, which is applied in the field of agricultural greenhouses and three-level temperature monitoring devices for greenhouses, and can solve problems that affect the normal growth of seedlings and the temperature of plastic sheds is difficult to control.

Inactive Publication Date: 2012-06-13
黄勇
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AI Technical Summary

Problems solved by technology

The disadvantage of this kind of seedling shed is that the temperature in the plastic shed is often difficult to control, and the temperature is too high or too low to affect the normal growth of seedlings.

Method used

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  • Agricultural shed and greenhouse three-grade temperature monitoring device
  • Agricultural shed and greenhouse three-grade temperature monitoring device

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Embodiment Construction

[0017] According to attached figure 1 The present invention can be realized by following the working principle diagram of the circuit and the description of the accompanying drawings, and implementing the connection relationship between the components in each part of the circuit and the technical parameters of the components as described in the summary of the invention.

[0018] Selection of components and their technical parameters

[0019] IC1 is a photometric integrated circuit, and the selected model is ZH-3. ZH-3 is a photometric integrated circuit used for camera exposure meters and photometers. In the present invention, it is mainly used for the identification and processing of thermal signals. , and use the three-state LED to display the driving circuit function;

[0020] VT1 is a PNP silicon transistor, the model is 2CS8550 or 3CG8550;

[0021] D1~D3 are silicon switching diodes, all models are 1N4148;

[0022] LED1~LED3 are all made of ￠5mm light-emitting diodes, ...

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Abstract

The invention relates to an agricultural shed and greenhouse three-grade temperature monitoring device. The temperature monitoring device consists of a 5V direct current power supply, a temperature detection circuit, a three-state light-emitting diode (LED) display circuit and a sound alarm circuit, wherein the temperature detection circuit is a photometric integrated circuit IC1. By the agricultural shed and greenhouse three-grade temperature monitoring device, a photometric integrated circuit ZH-3 serves as a core element; in an external circuit, a temperature sensor is ingeniously used, namely a photometric photosensitive element is replaced by a thermistor, the temperature sensor is used for sampling temperatures, and a temperature signal is processed by the integrated circuit ZH-3; when an ambient temperature rises or is low, high, middle and low three-grade temperature changes in a rice seedling raising shed are timely reflected through three LEDs, and alarm sound of a buzzer is emitted simultaneously; and the monitoring device can be used for monitoring the temperatures in sheds, greenhouses and other occasions and is extremely convenient to use.

Description

technical field [0001] The invention belongs to the field of electronic technology and agricultural production, and relates to a three-stage temperature monitoring device for agricultural greenhouses and greenhouses. Background technique [0002] In rural areas, in order to raise seedlings early and shape seedlings, and to increase the ambient temperature in early spring, plastic films are often used to build simple seedling raising sheds on the ground to cultivate seedlings. The shortcoming of this seedling raising shed is that the temperature in the plastic shed is often difficult to control, and the temperature is too high or too low to affect the normal growth of the seedlings. The invention is a third-level temperature monitoring device for agricultural greenhouses and greenhouses. The temperature sensor is responsible for sampling, and the temperature signal is processed by the integrated circuit ZH-3. There are 3 levels of temperature changes in the seedling shed, "h...

Claims

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Application Information

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IPC IPC(8): G01K7/24
Inventor 黄勇
Owner 黄勇
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