An air environment quality detection system for livestock and poultry houses and its application method

Abstract

The invention relates to a livestock house air environment quality testing system and a use method thereof. The livestock house air environment quality testing system comprises a first ventilation chamber, an air pump, a second ventilation chamber and a third ventilation chamber. The air inlet of the first ventilation chamber is connected with external to-be-tested air. The air outlet of the first ventilation chamber is successively connected with the air pump, the air inlet of the second ventilation chamber and the air inlet of the third ventilation chamber in series through pipeline. The air outlet of the third ventilation chamber is connected with outer environment. A temperature and humidity sensor and a dust sensor are fixedly arranged in the first ventilation chamber. An ammonia sensor is fixedly arranged in the second ventilation chamber. A carbon dioxide sensor is fixedly arranged in the third ventilation chamber. The temperature and humidity sensor, the dust sensor, the ammonia sensor and the carbon dioxide sensor transmit acquired temperature and humidity data, dust concentration data, carbon dioxide concentration data and ammonia concentration data to a control system. The control system receives all data and performs processing and analysis. The livestock house air environment quality testing system and the use method can perform simultaneous and real-time testing on temperature, humidity, dust concentration, carbon dioxide concentration and ammonia concentration.

Description

technical field [0001] The invention relates to the field of facility agricultural environment detection and control, in particular to a livestock and poultry house air environment quality detection system and a use method thereof. Background technique [0002] The air environment quality control plan in the livestock and poultry house needs to be completed on the basis of systematic detection and evaluation of the air quality environment in the house. Among them, the detection and evaluation indicators involved mainly include temperature, humidity, dust concentration, carbon dioxide concentration and Ammonia concentration, for these detection and evaluation indicators, although there are many detection equipment and methods in the field of sensor research and development, there are the following three outstanding problems in actual use, specifically: 1. During the long-term continuous detection process The system cumulative error problem is serious. When testing the air qu...

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Problems solved by technology

The material in the ammonia electrochemical sensor will be inaccurate due to the continuous reaction with high concentration ammonia to reach the upper limit of the critical value of the reaction, so that when the ammonia concentration in the environment of the livestock house changes, the material of the ammonia electrochemical sensor cannot React with ammonia again to get the corresponding test results

This kind of error or misalignment will continue to accumulate during long-term continuous detection, which will continuously reduce the detection accuracy and reliability of the sensor, and will eventually cause the sensor to reach the end of its service life in advance

[0003] 2. Multi-index measuring instruments are expensive, difficult to carry, and poor in environmental adaptability

Although some detection instruments can overcome the cumulative error and misalignment problems caused by electrochemical sensors and allow simultaneous measurement of multiple indicators, such as gas ultrasonic or light wave analyzers, such instruments are often too expensive in price and have large equipment volumes. It is heavy and not suitable for moving and handling. It is not suitable for use in the harsh environment of livestock and poultry farms and houses. It can only meet the needs of laboratory sampling and analysis.

[0004] 3. Multi-point measurement cannot be satisfied, and measurement data synchronization and processing are difficult

Among these two methods, the direct test is easy to cause time difference in gas detection due to the use of pipeline multiplexer to switch lines; the indirect test requires a lot of laboratory measurement and manual input in the later stage, which is prone to human error

[0005] 4. Remote and offline collection are difficult to meet, and most detections are still carried out manually

In addition to the most common detection and evaluation indicators of temperature and humidity, dust concentration, carbon dioxide concentration and ammonia concentration have not yet been used in the field of livestock and poultry production. The multi-point and intermittent detection method, the human error caused by this method and the impact of the harsh environment on the physical and mental health of the participants are issues that cannot be ignored

In addition, the test results between different sites cannot be used as a reference for each other, and cannot be compared and analyzed, so it is difficult to obtain practical research value for solving regional environmental and air pollution problems

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