Automatic control device for temperature of seedling-raising greenhouse by PLC control

An automatic control device and seedling-raising greenhouse technology, which is applied in greenhouse cultivation, temperature control using digital devices, temperature control using electric methods, etc., can solve problems such as temperature regulation, and achieve the effect of well-developed root system and good growth potential

Inactive Publication Date: 2019-03-22
EASTERN LIAONING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device is controlled by PLC to solve the technical problem of temperature regulation in the seedling cultivation greenhouse

Method used

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  • Automatic control device for temperature of seedling-raising greenhouse by PLC control
  • Automatic control device for temperature of seedling-raising greenhouse by PLC control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A control room 2 is arranged on one side of the nursery greenhouse 1;

[0011] A pillar 3 is arranged at the lower part of the seedling-growing greenhouse, a platform 4 is arranged at the upper part of the pillar, and seedling pots 5 are arranged on the platform;

[0012] A lower ventilation pipe 6 is arranged between the pillars, and a lower temperature sensor 7 is installed on the lower ventilation pipe. The lower ventilation pipe communicates with the air outlet of the lower fan 11. The lower fan is installed in the lower part of the control room, and the air suction port communicates with the electric heater 13;

[0013] An upper ventilation pipe 8 is installed in the upper space of the nursery greenhouse, and an upper temperature sensor 9 is installed on the upper ventilation pipe. One end of the upper ventilation pipe communicates with the upper fan 10 arranged in the control room, and the suction port of the upper fan communicates with the upper section of the ele...

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Abstract

The invention provides an automatic control device for temperature of a seedling-raising greenhouse by PLC control. A control room is arranged at one side of the seedling-raising greenhouse, pillars are arranged at the lower part of the seedling-raising greenhouse, a platform is arranged on the upper parts of the pillars, and seedling-raising pots are arrayed on the platform; lower ventilation pipes are arranged between the pillars, lower temperature sensors are arranged on the lower ventilation pipes, the lower ventilation pipes communicate with an air outlet of a lower draught fan, the lowerdraught fan is arranged at the lower part of the control room, and an air suction port communicates with an electric heater; the space of the upper part the seedling-raising greenhouse is internallyequipped with an upper ventilation pipe, an upper temperature sensor is arranged on the upper ventilation pipe, one end of the upper ventilation pipe communicates with an upper draught fan arranged inthe control room, and an air suction port of the upper draught fan communicates with an upper section of the electric heater; a PLC controller is arranged in the control room. The PLC controller is adopted for automatically controlling greenhouse seedling raising, regulating the growth state of seedlings, and raising the seedlings with good growth vigor, developed roots and strong stems, leaves and buds. The device is suitable for application as the automatic control device for the temperature of the seedling-raising greenhouse by PLC control.

Description

technical field [0001] The invention proposes a temperature control device for controlling seedling-growing greenhouses in the agricultural field, specifically a PLC-controlled automatic temperature control device for seedling-growing greenhouses. technical background [0002] At present, the temperature of greenhouse seedlings is provided by sunlight, and the temperature is raised by heating devices, but they are all directly heated to the whole greenhouse, and there is no specific temperature limit for the temperature increase, so for the growth of seedlings, it cannot be based on different varieties. , effective regulation is carried out at different periods, so the quality of the seedlings bred is uneven, which affects the growth effect after planting. Contents of the invention [0003] In order to improve the quality of growing seedlings in the greenhouse, the invention proposes a PLC-controlled automatic temperature control device for growing seedlings in the greenho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/14A01G9/24G05D23/19
CPCA01G9/14A01G9/246G05D23/1917Y02A40/25
Inventor 宋强
Owner EASTERN LIAONING UNIV
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