Real-time testing method for concentration of harmful gas in hog house environment

Abstract

The invention relates to the technical field of livestock and poultry farm environment monitoring, and discloses a real-time testing method for the concentration of harmful gas in a pig house environment. The method comprises the following steps: S1, determining test point positions and test point numbers (firstly determining the number and positions of the test point positions on a horizontal plane according to the area of a pig house, and then determining the test point numbers and test point heights on each test point position according to shoulder heights corresponding to different varieties and day ages of pigs); s2, arranging a gas concentration tester, a temperature recorder and an air pressure recorder according to the determined number and positions of the test point locations, the number of the test point locations and the height of the test point locations; s3, establishing a test system; and S4, calculating and analyzing the measured concentration of the harmful gas by using a test system. According to the method, the gas concentration testers, the thermometers and the barometers are arranged at different positions and different heights of the hog house, data can be obtained through real-time monitoring and calculated and analyzed, the test result can be more accurately obtained, and the test method is more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of livestock and poultry farm environment monitoring, and in particular to a real-time testing method for the concentration of harmful gases in a pig house environment. Background Art

[0002] The concentration of toxic and harmful gases in the livestock and poultry breeding environment has an important impact on personnel safety and the quality of livestock and poultry meat. As people's awareness of production safety and food safety increases, livestock and poultry farms should monitor the concentration of toxic and harmful gases in the breeding environment in real time, and control and adjust the environment.

[0003] The traditional testing method is laboratory analysis, which involves taking samples on site with sampling bags and then taking them back to the laboratory for analysis with chemical reagents. The test results cannot be obtained immediately, and the test data obtained by sampling is often not accurate enough, which affects the test results and makes it impossible to better adjust the breeding environment. Therefore, we propose a real-time testing method for the concentration of harmful gases in pig house environments. Summary of the invention

[0004] The main purpose of the present invention is to provide a real-time testing method for the concentration of harmful gases in a pig house environment, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A real-time test method for the concentration of harmful gases in a pig house environment, comprising the following steps: S1: determining the test points and the number of test points (first determining the number and positions of the test points on the horizontal plane according to the area of ​​the pig house, and then determining the number of test points and the height of the test points at each test point according to the shoulder heights of different breeds and ages of pigs); Ⅰ. For rectangular or square pig houses with an area not exceeding 600 m2, take the intersection of diagonals and 4 points on the two diagonals with a distance of 1 / 4 of the diagonal length to the 4 endpoints on the same horizontal plane, a total of 5 test points; for rectangular or square pig houses with an area of ​​more than 600 m2 but less than 1200 m2, take the intersection of diagonals, 4 points on the two diagonals with a distance of 1 / 6 of the diagonal length to the 4 endpoints on the same horizontal plane, and the midpoints of each side of the rectangle or square with these 4 points as endpoints, a total of 9 test points. For long strip pig houses, divide the pig houses into several rectangular breeding areas with a length-to-width ratio of 5:3 along the length direction, and determine the number of test points in each area in the same way as for rectangular or square pig houses with an area not exceeding 600 m2; Ⅱ. Pig breeds are divided into two categories: local breeds and introduced breeds. For local breed nursery pigs aged 25 to 70 days, two test points are set at each test point, and the test heights are (15±5) cm and (50±5) cm respectively. For local breed growing and fattening pigs, boars, pregnant sows, and lactating sows aged more than 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (70±5) cm respectively. For introduced breed nursery pigs aged 25 to 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (60±5) cm respectively. For introduced breed growing and fattening pigs, boars, pregnant sows, and lactating sows aged more than 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (90±5) cm respectively. S2: According to the determined number and location of test points, the number of test points and the height of the test points, the gas concentration tester, temperature recorder and air pressure recorder are arranged. An ammonia concentration tester, a hydrogen sulfide concentration tester, a carbon dioxide gas concentration tester and a temperature recorder are set at each test point. A pressure recorder is set in the whole pig house. If there are obstacles, they should be 10 to 15 cm apart. S3: Establish a test system, and connect the gas concentration tester, temperature recorder, and air pressure recorder to the computer through the control system in a wireless or wired manner; S4: Use the test system to calculate and analyze the measured concentration of harmful gases. In the nursery pig house, the ammonia concentration is ≤20mg / m 3 , hydrogen sulfide concentration ≤8mg / m 3 , carbon dioxide concentration ≤ 1300mg / m 3 In the houses of growing and fattening pigs, boars, pregnant sows and lactating sows over 70 days old, the ammonia concentration should be ≤25mg / m 3 , hydrogen sulfide concentration ≤ 10mg / m 3 , carbon dioxide concentration ≤1500mg / m 3 ; The measured concentration of harmful gases is analyzed by dimensional conversion. The data of the above qualified standards are the data measured by laboratory chemical composition analysis method, which is the mass concentration in mg / m 3 The data measured by the ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide concentration tester are volume concentrations, expressed in ppm. The difference between the two should be calculated according to formula (1): and formula (2) In formula (1) and formula (2), M is the relative molecular mass of the gas being measured, P is the atmospheric pressure during the test, and t is the ambient temperature during the test.

[0006] Preferably, the ammonia concentration tester provided in S2 is an electrochemical ammonia concentration tester.

[0007] Preferably, the hydrogen sulfide concentration tester provided in S2 is an electrochemical hydrogen sulfide concentration tester.

[0008] Preferably, the carbon dioxide concentration tester provided in S2 is an infrared carbon dioxide concentration tester.

[0009] Preferably, the temperature recorder provided in S2 is a PT100 platinum resistance temperature recorder.

[0010] Preferably, the pig house area and the number of pigs raised in S1 conform to the production regulations of large-scale pig farms.

[0011] Preferably, when the concentration of harmful gases in S4 is unqualified, the breeding environment is adjusted by increasing the air volume, releasing negative oxygen ions or spraying hypochlorous acid for disinfection and deodorization.

[0012] Preferably, the ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide gas concentration tester provided in S2 should be calibrated and calibrated regularly every week or according to actual usage.

[0013] Preferably, the ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide gas concentration tester provided in S2 should be replaced with new gas concentration sensors every year or regularly according to actual usage to ensure the accuracy of the test data.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting gas concentration testers, temperature recorders and air pressure recorders at different positions and heights in the pig house, the test results can be obtained in real time, and then the breeding environment can be adjusted by increasing the air volume, disinfecting and deodorizing, etc., which is beneficial to the growth of pigs and the health of personnel.

[0015] 2. In the present invention, instead of taking samples back to the laboratory for analysis, data is obtained on-site in real time, and the monitoring results are analyzed on-site through formula conversion to reduce deviations, making the monitoring results more accurate and more conducive to adjusting the breeding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A test flow chart of a real-time test method for the concentration of harmful gases in a pig house environment according to the present invention; Figure 2 This is a distribution diagram of test points in S1 of a real-time test method for harmful gas concentration in a pig house environment of the present invention. DETAILED DESCRIPTION

[0017] like Figure 1-Figure 2As shown, a real-time test method for the concentration of harmful gases in a pig house environment comprises the following steps: S1: determining the test points and the number of test points (firstly determining the number and positions of the test points on the horizontal plane according to the area of ​​the pig house, and then determining the number of test points and the height of the test points at each test point according to the shoulder heights corresponding to different breeds and ages of pigs); Ⅰ. For rectangular or square pig houses with an area not exceeding 600 m2, take the intersection of diagonals and 4 points on the two diagonals with a distance of 1 / 4 of the diagonal length to the 4 endpoints on the same horizontal plane, a total of 5 test points; for rectangular or square pig houses with an area of ​​more than 600 m2 but less than 1200 m2, take the intersection of diagonals, 4 points on the two diagonals with a distance of 1 / 6 of the diagonal length to the 4 endpoints on the same horizontal plane, and the midpoints of each side of the rectangle or square with these 4 points as endpoints, a total of 9 test points. For long strip pig houses, divide the pig houses into several rectangular breeding areas with a length-to-width ratio of 5:3 along the length direction, and determine the number of test points in each area in the same way as for rectangular or square pig houses with an area not exceeding 600 m2; Ⅱ. Pig breeds are divided into two categories: local breeds (Ningxiang pigs, Rongchang pigs, Taihu pigs, etc.) and introduced breeds (Yorkshire, Landrace, Duroc, Hampshire, Pietrain, Berkshire) (according to the national livestock and poultry genetic resources variety list, they are divided into local breeds, cultivated breeds and introduced breeds, and local breeds and cultivated breeds are merged into local breeds). For local breed nursery pigs aged 25 to 70 days, two test points are set at each test point, and the test heights are (15±5) cm (lying state) and (50±5) cm (standing state). For local breed growing and fattening pigs and boars over 70 days old, two test points are set at each test point, and the test heights are (15±5) cm (lying state) and (50±5) cm (standing state). , pregnant sows, and lactating sows, two test points are set on each test point, and the test heights are (20±5) (lying state) cm and (70±5) cm (standing state) respectively. For nursery pigs of the introduced breed aged 25 to 70 days, two test points are set on each test point, and the test heights are (20±5) cm (lying state) and (60±5) cm (standing state) respectively. For growing and fattening pigs, boars, pregnant sows, and lactating sows of the introduced breed aged more than 70 days, two test points are set on each test point, and the test heights are (20±5) cm and (90±5) cm respectively. S2: According to the determined number and location of test points, the number of test points and the height of the test points, the gas concentration tester, temperature recorder and air pressure recorder are arranged. An ammonia concentration tester, a hydrogen sulfide concentration tester, a carbon dioxide gas concentration tester and a temperature recorder are set at each test point. A pressure recorder is set in the whole pig house. If there are obstacles, they should be 10 to 15 cm apart. S3: Establish a test system, and connect the gas concentration tester, temperature recorder, and air pressure recorder to the computer through the control system in a wireless or wired manner; S4: Use the test system to calculate and analyze the measured concentration of harmful gases. In the nursery pig house, the ammonia concentration is ≤20mg / m 3 , hydrogen sulfide concentration ≤8mg / m 3 , carbon dioxide concentration ≤ 1300mg / m 3 In the houses of growing and fattening pigs, boars, pregnant sows and lactating sows over 70 days old, the ammonia concentration should be ≤25mg / m 3 , hydrogen sulfide concentration ≤ 10mg / m 3 , carbon dioxide concentration ≤1500mg / m 3 ; The measured concentration of harmful gases is analyzed by dimensional conversion. The data of the above qualified standards are the data measured by laboratory chemical composition analysis method, which is the mass concentration in mg / m 3 The data measured by the ammonia concentration tester, hydrogen sulfide concentration tester, carbon dioxide concentration tester, and methane concentration tester are volume concentrations, expressed in ppm. The difference between the two should be calculated according to formula (1): and formula (2) In formula (1) and formula (2), M is the relative molecular mass of the gas being measured, P is the atmospheric pressure during the test, and t is the ambient temperature during the test.

[0018] The ammonia concentration tester set in S2 is an electrochemical ammonia concentration tester.

[0019] The hydrogen sulfide concentration tester set in S2 is an electrochemical hydrogen sulfide concentration tester.

[0020] The carbon dioxide concentration tester set in S2 is an infrared carbon dioxide concentration tester.

[0021] The temperature recorder set in S2 is a PT100 platinum resistance temperature recorder.

[0022] The pig house area and number of pigs raised in S1 comply with the production regulations of large-scale pig farms.

[0023] When the concentration of harmful gases in S4 is unsatisfactory, the breeding environment is adjusted by increasing the air volume, releasing negative oxygen ions, or spraying hypochlorous acid for disinfection and deodorization.

[0024] The ammonia concentration tester, hydrogen sulfide concentration tester and carbon dioxide gas concentration tester installed in S2 should be calibrated and calibrated regularly every week or according to actual usage.

[0025] The ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide gas concentration tester installed in S2 should be replaced with new gas concentration sensors every year or regularly according to actual usage to ensure the accuracy of the test data.

[0026] The present invention arranges gas concentration testers, thermometers and barometers at different positions and heights in the pig house to monitor data in real time and perform calculation and analysis, so that the test results can be obtained more accurately, so as to better adjust the breeding environment by increasing the air volume, disinfecting and deodorizing, etc., which is beneficial to the growth of pigs and the health of personnel.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A real-time testing method for the concentration of harmful gases in a pig house environment, characterized in that: The steps are as follows: S1: determine the test points and the number of test points (first determine the number and position of the test points on the horizontal plane according to the area of ​​the pig house, and then determine the number of test points and the height of each test point according to the shoulder height corresponding to different breeds and ages of pigs); Ⅰ. For rectangular or square pig houses with an area not exceeding 600 m2, take the intersection of diagonals and 4 points on the two diagonals with a distance of 1 / 4 of the diagonal length to the 4 endpoints on the same horizontal plane, a total of 5 test points; for rectangular or square pig houses with an area of ​​more than 600 m2 but less than 1200 m2, take the intersection of diagonals, 4 points on the two diagonals with a distance of 1 / 6 of the diagonal length to the 4 endpoints on the same horizontal plane, and the midpoints of each side of the rectangle or square with these 4 points as endpoints, a total of 9 test points. For long strip pig houses, divide the pig houses into several rectangular breeding areas with a length-to-width ratio of 5:3 along the length direction, and determine the number of test points in each area in the same way as for rectangular or square pig houses with an area not exceeding 600 m2; Ⅱ. Pig breeds are divided into two categories: local breeds and introduced breeds. For local breed nursery pigs aged 25 to 70 days, two test points are set at each test point, and the test heights are (15±5) cm and (50±5) cm respectively. For local breed growing and fattening pigs, boars, pregnant sows, and lactating sows aged more than 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (70±5) cm respectively. For introduced breed nursery pigs aged 25 to 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (60±5) cm respectively. For introduced breed growing and fattening pigs, boars, pregnant sows, and lactating sows aged more than 70 days, two test points are set at each test point, and the test heights are (20±5) cm and (90±5) cm respectively. S2: According to the determined number and location of test points, the number of test points and the height of the test points, place gas concentration testers, temperature recorders and barometers. Set up ammonia concentration testers, hydrogen sulfide concentration testers, carbon dioxide gas concentration testers and temperature recorders at each test point. Set up a pressure recorder in the entire pig house. If there are obstacles, they should be 10 to 15 cm apart. S3: Establish a test system, connect the gas concentration tester, temperature recorder, and barometer to the computer through the control system by wireless or wired means; S4: Use the test system to calculate and analyze the measured concentration of harmful gases. In the nursery pig house, the concentration of ammonia is ≤20mg / m3, the concentration of hydrogen sulfide is ≤8mg / m3, and the concentration of carbon dioxide is ≤1300mg / m 3 In the houses of growing and fattening pigs, boars, pregnant sows and lactating sows over 70 days old, the ammonia concentration should be ≤25mg / m 3 , hydrogen sulfide concentration ≤10mg / m 3 , carbon dioxide concentration ≤1500mg / m 3 ; The measured concentration of harmful gases is analyzed by dimensional conversion. The data of the above qualified standards are the data measured by laboratory chemical composition analysis method, which is the mass concentration in mg / m 3 The data measured by the ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide concentration tester are volume concentrations, expressed in ppm. The difference between the two should be calculated according to formula (1): and formula (2) In formula (1) and formula (2), M is the relative molecular mass of the gas being measured, P is the atmospheric pressure during the test, and t is the ambient temperature during the test.

2. A real-time testing method for the concentration of harmful gases in a pig house environment according to claim 1, characterized in that: The ammonia concentration tester set in S2 is an electrochemical ammonia concentration tester.

3. A real-time testing method for the concentration of harmful gases in a pig house environment according to claim 1, characterized in that: The hydrogen sulfide concentration tester set in S2 is an electrochemical hydrogen sulfide concentration tester.

4. A real-time testing method for harmful gas concentration in a pig house environment according to claim 1, characterized in that: The carbon dioxide concentration tester set in S2 is an infrared carbon dioxide concentration tester.

5. A real-time testing method for the concentration of harmful gases in a pig house environment according to claim 1, characterized in that: The temperature recorder set in S2 is a PT100 platinum resistance temperature recorder.

6. A real-time testing method for harmful gas concentration in a pig house environment according to claim 1, characterized in that: The pig house area and number of pigs raised in S1 comply with the production regulations of large-scale pig farms.

7. A real-time testing method for the concentration of harmful gases in a pig house environment according to claim 1, characterized in that: When the concentration of harmful gases in S4 is unsatisfactory, the breeding environment is adjusted by increasing the air volume, releasing negative oxygen ions, or spraying hypochlorous acid for disinfection and deodorization.

8. A real-time testing method for the concentration of harmful gases in a pig house environment according to claim 1, characterized in that: The ammonia concentration tester, hydrogen sulfide concentration tester and carbon dioxide gas concentration tester installed in S2 should be calibrated and calibrated regularly every week or according to actual usage.

9. A real-time testing method for harmful gas concentration in a pig house environment according to claim 1, characterized in that: The ammonia concentration tester, hydrogen sulfide concentration tester, and carbon dioxide gas concentration tester installed in S2 should be replaced with new gas concentration sensors every year or regularly according to actual usage to ensure the accuracy of the test data.

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