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Milk cow house cooling control system based on physiological discomfort index

A technology of comfort index and control system, applied in the control/regulation system, auxiliary non-electric temperature control, temperature control and other directions, can solve the problems of not reflecting the heat stress of dairy cows, unreasonable, etc., to achieve good energy-saving effect and improve Milk production, heat stress relief

Inactive Publication Date: 2009-10-07
FUJIAN AGRI & FORESTRY UNIV
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AI Technical Summary

Problems solved by technology

In summer in southern my country, the climate is characterized by high temperature often accompanied by high humidity, and a single environmental factor cannot reflect the heat stress of dairy cows. Therefore, it is very unreasonable to control the cooling system of dairy houses with only a single environmental factor

Method used

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  • Milk cow house cooling control system based on physiological discomfort index
  • Milk cow house cooling control system based on physiological discomfort index
  • Milk cow house cooling control system based on physiological discomfort index

Examples

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Embodiment 1

[0021] Example 1: A cooling control system for dairy cows based on physiological discomfort index

[0022] The dairy cow shed using the cooling control system of the present invention is an open type free-range cow shed with a double-slope roof, such as figure 2 As shown, the cowshed has a total length of 60m and a span of 27m. The feeding channel in the middle of the cowshed divides the cowshed into two left and right areas, A and B, and each area is divided into a feeding area and a rest area (cattle bed for short). ), and each cow feeds 160 dairy cows.

[0023] A cooling control system for dairy cows based on the physiological discomfort index of the present invention, such as figure 1 As shown, it is composed of a sensor (10), a main control unit (20), an input and output device (30), an execution drive unit (40) and an execution unit (50). The sensor (10) is made up of a humidity sensor (11), a temperature sensor (12) and an illumination sensor, and is used to collect ...

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Abstract

The present invention provides a milk cow house cooling control system based on physiological discomfort index. The invention converts the real-time measured temperature, humidity, light and other data in the cow-house into the 'Heat Stress' physiological discomfort index PCI of the cow, intelligently automatically opens the air machine and spraying or atomizing operation based on the physiological discomfort index, and automatically controls the spraying or atomizing time and the spraying or atomizing interval and whether to start up the spraying or atomizing function based on the cow house humidity, and the spraying or atomizing and the air machine are alternated operations. The present invention can effectively alleviate the thermal stress of milk cow in summer, to ensure milk cow health and normalized exertion of production performance, and simultaneously has energy-saving effect.

Description

technical field [0001] The invention relates to an environment control system, in particular to a dairy cow house cooling control system based on a physiological discomfort index. Background technique [0002] At present, the leading breed of dairy cows in my country is Holstein cattle. Holstein cattle are characterized by cold resistance and heat resistance, and their suitable ambient temperature is 10-16 °C. When the ambient temperature exceeds 23°C and the temperature and humidity index exceeds 72, Holstein cattle will experience heat stress symptoms such as decreased feed intake, greatly reduced milk production, reproductive impairment, decreased immunity, and increased morbidity. Heat stress has become an important bottleneck restricting the healthy development of my country's dairy industry. In order to alleviate the impact of heat stress on dairy cows, artificial forced cooling must be used. At present, the cooling method of facilities basically adopts fan forced ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02G05D23/20G05D23/185G05D22/02A01K1/00
Inventor 张性雄何金成董晓林
Owner FUJIAN AGRI & FORESTRY UNIV
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