Anti-interference device for measuring methane of dairy cow AHC

Abstract

This invention provides an anti-interference AHC methane measuring device for dairy cows, relating to the field of methane measurement technology. It includes a measuring head chamber with an exhaust control component installed on it to improve methane measurement accuracy. The measuring head chamber also features a swinging lure for attracting dairy cows. A dynamic drive component is also installed on the measuring head chamber. By using the swinging lure in conjunction with the dynamic drive component, the lure feed can be controlled to swing back and forth within the gas-gathering head chamber, easily attracting the cow's attention, providing visual attraction, and promoting odor dispersion. A laser position switch automatically controls the swing amplitude of the feed trough to be reduced when the cow approaches the elastic membrane, and controls the feed trough to swing in the area near the inner side of the gas-gathering head chamber to attract the cow. This solves the problem that current AHC methane measuring devices are not convenient for automatically controlling dynamic attraction of dairy cows and have a single attraction method.

Description

Technical Field

[0001] This invention relates to the field of methane determination technology, and in particular to an interference-resistant AHC methane determination device for dairy cows. Background Technology

[0002] Microorganisms in the rumen of dairy cows ferment substances such as cellulose during digestion, producing hydrogen and carbon dioxide. Methanogenic bacteria use these gases to generate methane, which is ultimately released through belching. Detecting the exhaled gas can accurately reflect the methane emission concentration. An automated head-chamber rumen methane emission monitoring device, or AHC device for short, can be used to accurately monitor rumen methane emissions in ruminants. However, current AHC methane measuring devices are greatly affected by environmental wind interference when detecting methane in dairy cows. The collected methane emissions from cow belching are easily affected by environmental factors such as wind, making it difficult to quickly adjust ventilation and mix the collected methane, resulting in poor methane detection accuracy. Furthermore, the traditional gate-type closed structure has poor sealing effect, and the amount of methane gas emitted by dairy cows is greatly affected by environmental wind. Additionally, traditional methane measuring devices are not conducive to automatically controlling the dynamic attraction of dairy cows, and the attraction method is singular. Dairy cows tend to stay outside the gas-gathering head chamber without effectively extending their heads into the chamber, increasing the failure rate of the measurement. Summary of the Invention

[0003] This disclosure relates to an anti-interference dairy cow AHC methane measuring device, which solves the problems of current AHC methane measuring devices being inconvenient for automatic control of dynamic induction of dairy cows and having a single induction method.

[0004] In a first aspect, this disclosure provides an anti-interference device for measuring AHC methane in dairy cows, specifically including a measuring head chamber. An exhaust control component is installed on the measuring head chamber to improve the accuracy of methane measurement. A swinging lure is installed on the measuring head chamber to lure the dairy cow. A dynamic drive component is installed on the measuring head chamber to drive the swinging lure to swing. The measuring head chamber includes a gas-gathering head chamber, an isolation plate, and a methane measuring sensor. The front of the gas-gathering head chamber is open. Four casters are provided at the bottom of the gas-gathering head chamber. An isolation plate is fixedly installed inside the gas-gathering head chamber, and the bottom of the isolation plate has an arc-shaped structure. A methane measuring sensor is fixedly installed on the isolation plate, with its end passing through the isolation plate. Two handles are fixedly installed on the gas-gathering head chamber.

[0005] In at least some embodiments, the measuring head chamber further includes: a display, an elastic film, and a pressure ring; the display is fixedly mounted on the gas gathering head chamber; the display is electrically connected to a methane measuring sensor; an elastic film is attached to the gas gathering head chamber, and the elastic film has a through hole in the middle; the pressure ring is attached to the elastic film, and the pressure ring is fixedly mounted on the gas gathering head chamber by a ring of bolts; the ring of bolts on the pressure ring passes through the elastic film.

[0006] In at least some embodiments, the measuring head chamber further includes: a limiting pin, a stop plate, and a laser position switch, wherein the limiting pin is slidably inserted into the gas-gathering head chamber; the end of the limiting pin passes through the gas-gathering head chamber; a stop plate is slidably inserted into the gas-gathering head chamber, and the outer side of the stop plate is attached to the inner side of the gas-gathering head chamber; a laser position switch is fixedly installed on the gas-gathering head chamber by a bracket, and the laser position switch is aligned with a through hole on the elastic film; and the limiting pin is aligned with the stop plate.

[0007] In at least some embodiments, the exhaust control component includes: an exhaust pipe, a guide pipe, and a solenoid valve, wherein the exhaust pipe is fixedly installed on the gas gathering head chamber; a guide pipe is fixedly installed at the bottom of the exhaust pipe and passes through the gas gathering head chamber; and a solenoid valve is fixedly installed on the guide pipe.

[0008] In at least some embodiments, the exhaust control component further includes: an exhaust hood and an exhaust motor, wherein the exhaust hood is fixedly installed at the bottom of the guide pipe; the exhaust motor is fixedly installed inside the exhaust hood by a bracket, and the output shaft of the exhaust motor is located inside the exhaust hood; an impeller is fixedly installed on the output shaft of the exhaust motor.

[0009] In at least some embodiments, the swinging inducer includes a swing arm and a guide groove, wherein the swing arm is rotatably mounted on the inner side of the gas gathering head chamber; and the guide groove is provided on the swing arm.

[0010] In at least some embodiments, the swinging lure further includes a feed trough, which is fixedly mounted on the swing arm by bolts; the feed trough is used to dispense attractant food.

[0011] In at least some embodiments, the dynamic drive component includes: a drive rail and a movable slider, wherein the drive rail is fixedly mounted on the gas gathering head chamber; the drive rail is inclined, and the bottom end of the drive rail is further away from the front side of the gas gathering head chamber than the top end; and a movable slider is slidably mounted on the drive rail.

[0012] In at least some embodiments, the dynamic driving component further includes: a drive motor, a rotary arm, a swing column, a spring column, and a swing amplitude reduction spring. The drive motor is fixedly sleeved on the movable slider. The rotary arm is fixedly mounted on the output shaft of the drive motor. The swing column is fixedly mounted on the rotary arm. The swing column is located in a guide groove. The spring column is fixedly mounted on the bottom of the movable slider. The spring column is slidably sleeved on the drive guide rail. A swing amplitude reduction spring is sleeved on the spring column. One end of the swing amplitude reduction spring is fixedly connected to the spring column, and the other end of the swing amplitude reduction spring is fixedly connected to the bottom of the drive guide rail.

[0013] In at least some embodiments, the dynamic drive component further includes: a damper, an electromagnet, and an electromagnetic core column; the damper is fixedly sleeved on the bottom of the spring column; the telescopic end of the damper is fixedly installed on the gas-gathering head chamber; an electromagnet is fixedly installed on the inner side of the drive rail; an electromagnetic core column is fixedly installed on the movable slider, and the electromagnetic core column passes through the electromagnet; the electromagnetic core column is slidably sleeved on the drive rail; and the laser position switch is electrically connected to the electromagnet through a relay.

[0014] This invention provides an interference-resistant device for measuring AHC methane in dairy cows, which has the following beneficial effects: This invention employs a measuring head chamber section. The elastic membrane allows the cow's head to enter the gas-gathering head chamber without hindering its consumption of enticing feed. The elastic membrane structure better adapts to the cow's head contour, improving air leakage prevention. Simultaneously, the cow is more comfortable consuming the enticing feed, breathing more steadily, avoiding the resistance issues that arise when cows are rigidly restrained. Furthermore, the baffle plate facilitates quick and easy closure of the gas-gathering head chamber, reducing methane leakage and avoiding the large methane gas leakage problem associated with traditional door-type sealing structures when closing.

[0015] In addition, the exhaust control device can facilitate the venting of the previously collected methane gas in the gas collector chamber before methane measurement of dairy cows, ensuring the detection benchmark; at the same time, the solenoid valve can quickly close the exhaust pipe, which can be used to mix the methane gas in the gas collector chamber after collecting the methane gas from the cow's panting, thus improving the accuracy of methane measurement.

[0016] Furthermore, by using a swinging lure in conjunction with a dynamic drive, the feed can be controlled to swing back and forth within the gas-gathering head chamber. When the feed trough approaches the through-hole of the elastic membrane, it can easily attract the attention of dairy cows, visually enticing them and promoting the dispersion of odors to attract them. The laser position switch can automatically control the swing amplitude of the feed trough when the dairy cow approaches the elastic membrane, and control the feed trough to swing in the area near the inner side of the gas-gathering head chamber to attract the dairy cow. With the help of a damper, the adjustment speed can be reduced, slowly enticing the dairy cow's head to extend deep into the gas-gathering head chamber, improving the methane gas collection effect and increasing the success rate of methane detection in dairy cows. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the overall structure of an anti-interference dairy cow AHC methane measuring device according to this application is shown; Figure 2 A schematic diagram of the front structure of an anti-interference dairy cow AHC methane measuring device according to this application is shown; Figure 3 A schematic diagram of the internal structure of an anti-interference dairy cow AHC methane measuring device according to this application is shown; Figure 4 A schematic diagram showing the installation position of the material trough in this application is provided; Figure 5 A schematic diagram of the exhaust control component structure of this application is shown; Figure 6 A sectional view of the installation location of the exhaust fan motor in this application is shown; Figure 7 A schematic diagram of the swinging induced element structure of this application is shown; Figure 8 A cross-sectional view of the measurement cephal chamber structure of this application is shown; Figure 9 A schematic diagram of the dynamic drive structure of this application is shown; Figure 10 This application shows Figure 3 Enlarged view of the structure of region B in the middle; Figure 11 A schematic diagram of the installation position of the electromagnetic core column of this application is shown.

[0020] List of reference numerals 1. Measuring head chamber; 101. Gas gathering head chamber; 1011. Isolation plate; 1012. Methane measuring sensor; 102. Display; 103. Elastic diaphragm; 104. Pressure ring; 105. Limit pin; 106. Stop plate; 107. Laser position switch; 2. Exhaust control components; 201. Exhaust pipe; 2011. Guide pipe; 202. Solenoid valve; 203. Exhaust hood; 204. Exhaust fan motor; 3. Swinging induced component; 301. Swing arm; 3011. Guide groove; 302. Material trough; 4. Dynamic driving component; 401. Drive guide rail; 402. Moving slider; 4021. Drive motor; 4022. Rotating arm; 4023. Swing column; 403. Spring column; 404. Swing amplitude reduction spring; 405. Damper; 406. Electromagnet; 407. Electromagnetic core column. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 11 : This invention proposes an anti-interference AHC methane measuring device for dairy cows, comprising a measuring head chamber 1, an exhaust control component 2 installed on the measuring head chamber 1 to improve the accuracy of methane measurement; a swinging lure 3 installed on the measuring head chamber 1 to lure the dairy cow; a dynamic drive component 4 installed on the measuring head chamber 1 to drive the swinging lure 3 to swing; the measuring head chamber 1 includes: a gas-gathering head chamber 101, an isolation plate 1011, and a methane measuring sensor 1012; The gas collection head chamber 101 is equipped with a GT-F-TA600 type methane sensor 1012 and a matching display 102. The front of the gas collection head chamber 101 is open. The bottom of the gas collection head chamber 101 is equipped with four casters. An isolation plate 1011 is fixedly installed inside the gas collection head chamber 101, and the bottom of the isolation plate 1011 has an arc-shaped structure. The methane sensor 1012 is fixedly installed on the isolation plate 1011, and the end of the methane sensor 1012 passes through the isolation plate 1011. Two handles are fixedly installed on the gas collection head chamber 101.

[0023] In this embodiment, the measuring head chamber 1 further includes: a display 102, an elastic film 103, and a pressure ring 104. The display 102 is fixedly mounted on the gas-gathering head chamber 101; the display 102 is electrically connected to the methane measuring sensor 1012; the elastic film 103 is attached to the gas-gathering head chamber 101, and the elastic film 103 has a through hole in the middle; the pressure ring 104 is attached to the elastic film 103, and the pressure ring 104 is fixedly mounted on the gas-gathering head chamber 1 by a ring of bolts. 01; a ring of bolts on the pressure ring 104 passes through the elastic diaphragm 103; the measuring head chamber 1 also includes: a limiting pin 105, a stop plate 106, and a laser position switch 107. The limiting pin 105 is slidably inserted into the gas-gathering head chamber 101; the end of the limiting pin 105 passes through the gas-gathering head chamber 101; the stop plate 106 is slidably inserted into the gas-gathering head chamber 101, and the outer side of the stop plate 106 is attached to the inner side of the gas-gathering head chamber 101; a bracket is used to support the gas-gathering head chamber 101. A laser position switch 107 is fixedly installed and aligned with the through hole on the elastic diaphragm 103; the limit pin 105 is aligned with the stop plate 106; the measuring head chamber 1 is adopted, and the elastic diaphragm 103 allows the cow's head to be inserted into the gas-gathering head chamber 101 to eat the attractant feed without affecting the cow's head. The elastic diaphragm structure can better adapt to the cow's head contour, improve the anti-leakage effect, and make the cow more comfortable when eating the attractant feed, with stable breathing, avoiding the problem of cow resistance when the cow is rigidly fixed. At the same time, the stop plate 106 can facilitate the quick closure of the gas-gathering head chamber 101, reduce methane leakage, and avoid the problem of large methane gas leakage when closing the door of the traditional door-type sealing structure. The structure is simple to operate and can be more suitable for methane measurement work for cows. When it is necessary to close the gas-gathering head chamber 101, the operator pulls out the limit pin 105 and presses down the stop plate 106 to quickly close the gas-gathering head chamber 101.

[0024] In this embodiment, the exhaust control component 2 includes: an exhaust pipe 201, a guide pipe 2011, and a solenoid valve 202. The exhaust pipe 201 is fixedly installed on the gas gathering head chamber 101. The guide pipe 2011 is fixedly installed at the bottom of the exhaust pipe 201, and the guide pipe 2011 passes through the gas gathering head chamber 101. The solenoid valve 202 is fixedly installed on the guide pipe 2011. The exhaust control component 2 also includes: an exhaust hood 203 and an exhaust motor 204. The exhaust hood 203 is fixedly installed at the bottom of the guide pipe 2011. The exhaust motor 204 is fixedly installed inside the exhaust hood 203 by a bracket. The output shaft of 04 is located inside the exhaust hood 203; an impeller is fixedly installed on the output shaft of the exhaust motor 204; the exhaust control component 2 can facilitate the venting of the previously collected methane gas in the gas collection head chamber 101 before the methane measurement of dairy cows, which can ensure the detection benchmark and avoid the continuous accumulation of residual methane gas, which would interfere with the methane measurement. At the same time, the solenoid valve 202 can quickly close the exhaust pipe 201, which can be used to mix the methane gas inside the gas collection head chamber 101 after collecting the methane gas from the cows' panting, further improving the accuracy of methane measurement. The structure and control are simple.

[0025] In Embodiment 2, based on Embodiment 1, the swinging attractor 3 includes: a swing arm 301 and a guide groove 3011. The swing arm 301 is rotatably mounted inside the gas-gathering head chamber 101; the guide groove 3011 is provided on the swing arm 301; the swinging attractor 3 also includes: a feed trough 302, which is fixedly mounted on the swing arm 301 by bolts; the feed trough 302 is used to put attractant food; the dynamic drive component 4 includes: a drive guide rail 401 and a moving slider 402. The drive guide rail 401 is fixedly mounted on the gas-gathering head chamber 101; the drive guide rail 401 is inclined, and the bottom end of the drive guide rail 401 is higher than the top end. The end is further away from the front side of the gas gathering head chamber 101; a movable slider 402 is slidably mounted on the drive guide rail 401; the dynamic drive component 4 also includes: a drive motor 4021, a rotary arm 4022, a swing column 4023, a spring column 403, and a swing amplitude reduction spring 404. The drive motor 4021 is fixedly sleeved on the movable slider 402; the rotary arm 4022 is fixedly mounted on the output shaft of the drive motor 4021; the swing column 4023 is fixedly mounted on the rotary arm 4022; the swing column 4023 is located in the guide groove 3011; the spring column 403 is fixedly mounted on the bottom of the movable slider 402; the spring column 403 slides... The dynamic drive component 4 also includes: a damper 405, an electromagnet 406, and an electromagnetic core 407. The damper 405 is fixedly sleeved on the bottom of the spring column 403, and the other end of the damper 405 is fixedly connected to the bottom of the drive guide rail 401. The telescopic end of the damper 405 is fixedly installed on the gas gathering head chamber 101. An electromagnet 406 is fixedly installed on the inner side of the drive guide rail 401. An electromagnetic core 407 is fixedly installed on the movable slider 402. Furthermore, the electromagnetic core 407 passes through the electromagnet 406; the electromagnetic core 407 is slidably sleeved on the drive rail 401; the laser position switch 107 is electrically connected to the electromagnet 406 through a relay; by using the swinging lure 3 in conjunction with the dynamic drive 4, the lure feed can be controlled to swing back and forth in the gas gathering head chamber 101. When the feed trough 302 approaches the through hole of the elastic membrane 103, it can easily attract the attention of the dairy cows, visually lure the dairy cows, and promote the diffusion of odors to lure the dairy cows. The structure is simple to control, and there is no need for staff to forcibly pull the dairy cows for methane sampling and testing. The dynamic lure method can improve the success rate of dairy cow lure. The movable slider 402, which can be slidably adjusted, can dynamically control the swing amplitude and position of the feed trough 302. It can work with the laser position switch 107 to automatically control the swing amplitude of the feed trough 302 when the cow approaches the elastic membrane 103, and control the feed trough 302 to swing in the area near the inner side of the gas collecting head chamber 101 to entice the cow. With the damper 405, the adjustment speed can be reduced, slowly enticing the cow's head to extend deep into the gas collecting head chamber 101, improving the methane gas collection effect, and avoiding the problem of the cow waiting at the elastic membrane 103 for the feed trough 302 to approach before eating the enticement feed, which would cause the monitoring to fail. This can improve the success rate of methane detection in dairy cows and reduce the probability of secondary retesting.

[0026] The working principle of this embodiment is as follows: When methane measurement is required, the operator pushes the gas-gathering head chamber 101 to the side of the cow pen, lifts the stop plate 106, and then inserts the limiting pin 105 into the gas-gathering head chamber 101. The end of the limiting pin 105 will stop at the bottom of the stop plate 106, thus limiting the position. Combined with the attraction of the attractant feed in the feed trough 302, and when the cow is not close to the elastic membrane 103, there is no cow obstructing the laser position switch 107. At this time, the electromagnet 406 is energized, utilizing... Magnetic force attracts the electromagnetic core column 407, keeping the moving slider 402 above the drive guide rail 401. At this time, the swing amplitude is reduced and the spring 404 is compressed. The drive motor 4021 drives the rotary arm 4022 to rotate the swing column 4023, which slides within the guide groove 3011. This allows the swing arm 301 to swing back and forth, and the attractant feed is pre-placed into the feed trough 302. At this time, the drive motor 4021 is close to the rotation axis of the swing arm 301, and the feed trough 302 swings more widely. The groove 302 can swing close to the through hole of the elastic film 103. However, when the cow approaches the elastic film 103, as the cow wants to eat the bait, the laser position switch 107 can detect that there is a cow blocking the way below and control the electromagnet 406 to cut off the power. At this time, the elastic compression of the swing amplitude reduction spring 404 can squeeze the spring column 403 to pull the moving slider 402 to tilt and move downward. While moving downward, it moves towards the inside of the gas gathering head chamber 101. During this process, the damper 405 can reduce the moving speed of the moving slider 402. At this time, the moving slider 402 will also drive the drive motor 4021 to adjust its position. Since the drive motor 4021 is away from the rotation axis of the swing arm 301 and moves towards the inside of the gas gathering head chamber 101, the rotation radius of the swing column 4023 remains unchanged. The swing amplitude of the swing arm 301 will be reduced, and the swing range is inside the gas gathering head chamber 101. This can further attract the cow to extend into the depth of the gas gathering head chamber 101, which is convenient for gas gathering for subsequent measurement work. When the cow's head passes through the through-hole of the elastic membrane 103 and it eats the attractant feed, the edge of the through-hole of the elastic membrane 103 will elastically fit against the cow's head. Then, as the cow pants, the methane content in the gas-gathering chamber 101 gradually increases. Due to its density characteristics, the methane gas will accumulate at the top inner side of the gas-gathering chamber 101. The operator can time this process. Once the cow has panted for the required amount of time in the gas-gathering chamber 101, the gas-gathering chamber 101 can be pushed out of the cow. At the same time, the limiting pin 105 is pulled out, and the limiting pin 105 no longer blocks the stop plate 106. Manually pressing down on the stop plate 106 will quickly lower and close the gas-gathering chamber 101. When the stop plate 106 moves vertically downwards, its cross-sectional area is small, so it will not squeeze out too much methane gas. Then, the electromagnetic... When valve 202 is closed, exhaust motor 204 is turned on. At this time, the impeller on the output shaft of exhaust motor 204 rotates to generate airflow. Since exhaust pipe 201 is closed, only the gas inside gas collection chamber 101 is mixed. When methane sensor 1012 is turned on, the concentration of the mixed methane gas can be measured and displayed on display 102. The staff records the value in time. After completing a methane concentration measurement, the staff can turn on solenoid valve 202. At this time, the airflow generated by the rotation of impeller on the output shaft of exhaust motor 204 can accelerate the air convection circulation inside and outside gas collection chamber 101, helping to empty the methane gas residue in gas collection chamber 101. Before the next methane measurement of dairy cows, exhaust motor 204 can be turned off.

[0027] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0028] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An anti-interference dairy cow AHC methane measuring device, comprising a measuring head chamber (1), wherein an exhaust control component (2) is installed on the measuring head chamber (1); characterized in that: The exhaust control component (2) is used to improve the accuracy of methane measurement; the measuring head chamber (1) is equipped with a swinging lure (3); the swinging lure (3) is used to lure dairy cows; A dynamic drive unit (4) is installed on the measuring head chamber (1); the dynamic drive unit (4) is used to drive the swinging inducer (3) to swing. The measuring head chamber (1) includes: a gas gathering head chamber (101), an isolation plate (1011), a methane measuring sensor (1012), and a laser position switch (107). The isolation plate (1011) is fixedly installed inside the gas gathering head chamber (101); the methane measuring sensor (1012) is fixedly installed on the isolation plate (1011). The swinging inducer (3) includes a swing arm (301) and a guide groove (3011); the dynamic drive (4) includes a drive guide rail (401) and a moving slider (402); the dynamic drive (4) further includes a drive motor (4021), a rotary arm (4022), a swing column (4023), a spring column (403), and a swing amplitude reduction spring (404), wherein the drive motor (4021) is fixedly sleeved on the moving slider (402); the rotary arm (4022) is fixedly mounted on the output shaft of the drive motor (4021). A swing column (4023) is fixedly installed on the rotary arm (4022); the swing column (4023) is located in the guide groove (3011); the spring column (403) is fixedly installed at the bottom of the movable slider (402); the spring column (403) is slidably sleeved on the drive guide rail (401); a swing amplitude reduction spring (404) is sleeved on the spring column (403); one end of the swing amplitude reduction spring (404) is fixedly connected to the spring column (403), and the other end of the swing amplitude reduction spring (404) is fixedly connected to the bottom of the drive guide rail (401); The dynamic drive component (4) further includes: a damper (405), an electromagnet (406), and an electromagnetic core (407). The damper (405) is fixedly sleeved on the bottom of the spring column (403). The telescopic end of the damper (405) is fixedly installed on the gas gathering head chamber (101). An electromagnet (406) is fixedly installed on the inner side of the drive rail (401). An electromagnetic core (407) is fixedly installed on the movable slider (402), and the electromagnetic core (407) passes through the electromagnet (406). The electromagnetic core (407) is slidably sleeved on the drive rail (401). The laser position switch (107) is electrically connected to the electromagnet (406) through a relay.

2. The anti-interference dairy cow AHC methane measuring device according to claim 1, characterized in that, The measuring head chamber (1) further includes: a display (102), an elastic film (103), and a pressure ring (104). The display (102) is fixedly installed on the gas gathering head chamber (101). The display (102) is electrically connected to the methane measuring sensor (1012). The elastic film (103) is attached to the gas gathering head chamber (101), and the elastic film (103) has a through hole in the middle. The pressure ring (104) is attached to the elastic film (103), and the pressure ring (104) is fixedly installed on the gas gathering head chamber (101) by a ring of bolts. The ring of bolts on the pressure ring (104) passes through the elastic film (103).

3. The anti-interference dairy cow AHC methane measuring device according to claim 2, characterized in that, The measuring head chamber (1) further includes: a limiting pin (105) and a stop plate (106), wherein the limiting pin (105) is slidably inserted into the gas gathering head chamber (101); the end of the limiting pin (105) passes through the gas gathering head chamber (101); the stop plate (106) is slidably inserted into the gas gathering head chamber (101), and the outer side of the stop plate (106) is attached to the inner side of the gas gathering head chamber (101); a laser position switch (107) is fixedly installed on the gas gathering head chamber (101) by a bracket, and the laser position switch (107) is aligned with the through hole on the elastic film (103).

4. The anti-interference dairy cow AHC methane measuring device according to claim 1, characterized in that, The exhaust control component (2) includes an exhaust pipe (201), a guide pipe (2011), and a solenoid valve (202). The exhaust pipe (201) is fixedly installed on the gas gathering head chamber (101). The guide pipe (2011) is fixedly installed at the bottom of the exhaust pipe (201) and passes through the gas gathering head chamber (101). The solenoid valve (202) is fixedly installed on the guide pipe (2011).

5. The anti-interference dairy cow AHC methane measuring device according to claim 4, characterized in that, The exhaust control component (2) further includes an exhaust hood (203) and an exhaust motor (204). The exhaust hood (203) is fixedly installed at the bottom of the guide pipe (2011). The exhaust motor (204) is fixedly installed inside the exhaust hood (203) by a bracket. An impeller is fixedly installed on the output shaft of the exhaust motor (204).

6. The anti-interference dairy cow AHC methane measuring device according to claim 1, characterized in that, The swing arm (301) is rotatably mounted inside the gas gathering head chamber (101); a guide groove (3011) is provided on the swing arm (301).

7. The anti-interference dairy cow AHC methane measuring device according to claim 6, characterized in that, The swinging lure (3) further includes a feed trough (302), which is fixedly installed on the swing arm (301) by bolts; the feed trough (302) is used to put in the lure food.

8. The anti-interference dairy cow AHC methane measuring device according to claim 1, characterized in that, The drive rail (401) is fixedly installed on the gas gathering head chamber (101); the drive rail (401) is inclined; and a movable slider (402) is slidably installed on the drive rail (401).

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