Methane monitoring device for ruminants

Abstract

The utility model relates to methane monitoring equipment for ruminants. The methane monitoring equipment for ruminants comprises a methane collecting device, a condensing device, a heating device and a methane detecting device. The methane collection device is configured to be worn on the mouth and nose of the ruminant to collect gas discharged from the mouth and nose of the ruminant. A gas inlet of the condensing device is communicated with a gas outlet of the methane collecting device, and the condensing device is used for condensing the collected gas. A gas inlet of the heating device is communicated with a gas outlet of the condensing device, and the heating device is used for heating the condensed gas to a preset temperature. A gas inlet of the methane detection device is communicated with a gas outlet of the heating device, and the methane detection device is used for carrying out methane detection on the heated gas so as to obtain methane content information in the gas exhausted from the mouth and the nose of the ruminant. The methane monitoring equipment for ruminants has the advantages of fast detection response, long continuous detection capability and high detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of methane detection, in particular to a methane monitoring device for ruminants. Background Art

[0002] Methane gas, as an important greenhouse gas, is one of the important causes of global extreme climate change and greenhouse effect. Among them, the gas produced by ruminants such as cattle and sheep during food digestion contains a large amount of methane. However, most of the methane combustible gases emitted by the breeding industry are currently discharged directly into the air through ventilation.

[0003] In order to reduce the negative impact of methane emissions on the environment during ruminant farming, it is necessary to conduct methane detection on the gas produced by ruminants during the breeding process, and adjust the dietary structure of ruminants according to the detection results, or select animals with low methane emissions according to the detection results for artificial breeding to obtain high-quality breeds with low methane emissions, thereby achieving the purpose of protecting the environment.

[0004] At present, the most commonly used method for detecting methane in gases produced by ruminants is to place the animals in a respiratory metabolism chamber and inhale air to circulate in the chamber, so that the methane gas exhaled by the animals mixes with the indoor air, and at the same time, exhaust the air at the same rate as the intake rate, and sample and analyze the inhaled and exhausted gases.

[0005] However, in the above methane measurement method, firstly, only one animal can be measured in each respiratory metabolic chamber, and the animal needs a long time of training to adapt to the enclosed space in the chamber; secondly, the space in the respiratory metabolic chamber is large, so the animal needs to stay in the respiratory metabolic chamber for a long time before each measurement, so that the methane concentration in the indoor gas can meet the detection requirements of the methane measuring instrument. Therefore, the traditional method of measuring methane emission gas from ruminants has the problems of long measurement cycle, high equipment cost, small number of measured animals, and will also change the normal feeding status of the animals, and cannot be widely promoted. Utility Model Content

[0006] Based on this, it is necessary to provide a methane monitoring device for ruminants that has faster detection response, longer continuous detection capability and higher detection accuracy.

[0007] A methane monitoring device for ruminants, comprising:

[0008] a methane collection device configured to be worn on the snout of a ruminant to collect gas expelled from the snout of the ruminant;

[0009] A condensing device, whose air inlet is connected to the air outlet of the methane collecting device, and is used to condense the collected gas;

[0010] a heating device, the air inlet of which is connected to the air outlet of the condensing device and is used to heat the condensed gas to a preset temperature;

[0011] The methane detection device has an air inlet connected to the air outlet of the heating device and is used to detect methane in the heated gas to obtain information on the methane content in the gas discharged from the mouth and nose of the ruminant.

[0012] In one of the embodiments, it also includes a water mist separation device; the water mist separation device has an air inlet, an air outlet and a liquid drain port; the air inlet and the air outlet are respectively connected to the air outlet of the condensing device and the air inlet of the heating device; the liquid drain port is located at the bottom of the water mist separation device and is used to discharge the liquid in the water mist separation device.

[0013] In one of the embodiments, a vacuum pump is provided on the communication passage between the condensing device and the heating device.

[0014] In one of the embodiments, it also includes a flow meter, a pressure, temperature and humidity testing device and a control knob;

[0015] The flow meter is arranged on the communication path between the heating device and the methane detection device, and is used to collect the flow information of the gas flowing out of the vacuum pump in real time;

[0016] The pressure, temperature and humidity testing device comprises a pressure sensor and a temperature and humidity sensor; the pressure sensor is arranged on the communication path between the air inlet of the condensing device and the air outlet of the methane detection device, and is used to monitor the pressure information of the gas in real time; the temperature and humidity sensor is arranged at the air outlet of the methane detection device, and is used to monitor the temperature information and humidity information of the gas discharged from the methane detection device in real time;

[0017] The control knob is connected to the vacuum pump and is used to receive an interactive operation and control the rotation speed of the vacuum pump according to the interactive operation.

[0018] In one of the embodiments, it also includes a casing with a hollow structure; the side wall of the casing is provided with an air inlet mounting hole and an air outlet mounting hole; the air inlet mounting hole is respectively connected to the air outlet of the methane detection device and the air inlet of the condensation device; the air outlet mounting hole is connected to the air outlet of the methane detection device.

[0019] In one of the embodiments, it also includes a first pipe joint and a second pipe joint; the first pipe joint and the second pipe joint are respectively penetrated and fixed to the air inlet mounting hole and the air outlet mounting hole; one end of the first pipe joint is detachably connected to the air outlet of the methane detection device through a connecting hose, and the other end is detachably connected to the air inlet of the condensing device through an air inlet pipe; the end of the second pipe joint located in the casing is detachably connected to the air outlet of the methane detection device through an exhaust pipe.

[0020] In one of the embodiments, it also includes a power storage device installed in the housing; the power storage device is electrically connected to the heating device and the methane detection device respectively.

[0021] In one of the embodiments, a partition structure is provided in the casing; the partition structure divides the space in the casing into a working chamber and a power supply chamber; the battery is installed in the power supply chamber, and the condensing device, the heating device and the methane detection device are all installed in the working chamber.

[0022] In one of the embodiments, a maintenance door is further included; a maintenance port connected to the power supply cavity is opened on the side wall of the housing; the maintenance door matches the maintenance port and is arranged at the maintenance port.

[0023] In one embodiment, a handle structure is also provided on the housing; and / or

[0024] The casing is also provided with a hanging ring structure.

[0025] The above-mentioned methane monitoring equipment for ruminants utilizes a methane collection device to directly collect the gas discharged from the mouth and nose of the ruminants. Since the gas to be detected will not mix with the surrounding air, the methane detection device can immediately perform methane detection. There is no need for long-term training of ruminants to adapt to the closed environment indoors, nor is there a need for ruminants to stay indoors for a long time to ensure that the methane detection device can detect methane information in the indoor gas. Therefore, the application of the above-mentioned methane monitoring equipment for ruminants greatly shortens the methane detection cycle.

[0026] Since the humidity of the gas discharged from the mouth and nose of ruminants is too high, and the methane detection device, as an electronic component, cannot directly detect the gas with too high humidity, and the gas with too high humidity will also affect the service life of the methane detection device, so a condensation device is used to condense the gas collected from the mouth and nose of the ruminants to condense part of the water vapor in the gas into liquid to reduce the water content in the gas, and then the condensed gas is heated by a heating device to increase the saturated water vapor pressure, which can effectively prevent the condensation of water vapor in the methane detection device, thereby ensuring that the methane detection device can accurately and long-term real-time monitoring of the gas. Therefore, the above-mentioned methane monitoring equipment for ruminants has a faster detection response, a longer continuous detection capability and a higher detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a methane monitoring device for ruminants in a preferred embodiment of the utility model;

[0028] Figure 2 for Figure 1 The schematic diagram of the structure of the remaining parts of the methane monitoring equipment for ruminants after removing the methane detection device and the casing is shown;

[0029] Figure 3 for Figure 2 A front view of the remaining parts of the methane monitoring device for ruminants after removing the methane detection device and the housing;

[0030] Figure 4 1 is a schematic diagram of the structure of a casing in a methane monitoring device for ruminants;

[0031] Figure 5 for Figure 4 A cross-sectional view of the housing is shown.

[0032] Explanation of reference numerals: 100, methane monitoring equipment for ruminants; 110, methane collecting device; 120, condensing device; 130, heating device; 140, methane detecting device; 150, water mist separation device; 151, air inlet; 152, exhaust port; 153, drain port; 160, vacuum pump; 170, flow meter; 180, pressure, temperature and humidity testing device; 190, control knob; 201, housing; 2011, partition structure; 2012, power supply chamber; 2013, working chamber; 2014, maintenance door; 2015, handle structure; 2016, hanging ring structure; 202, first pipe joint; 203, second pipe joint; 204, connecting hose; 205, air inlet pipe; 206, exhaust pipe; 207, power storage device. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.

[0036] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0037] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0038] See also Figures 1 to 3 The methane monitoring device 100 for ruminants in a preferred embodiment of the present invention includes a methane collecting device 110 , a condensing device 120 , a heating device 130 and a methane detecting device 140 .

[0039] The methane collection device 110 is configured to be worn on the mouth and nose of a ruminant to collect gas discharged from the mouth and nose of the ruminant. The methane collection device 110 may be a mask structure that can be worn on the mouth and nose of a ruminant, or a connecting tube structure that can be fixed on the mouth and nose of a ruminant, or other structures that can directly collect gas from the mouth and nose of a ruminant.

[0040] The air inlet of the condensing device 120 is connected to the air outlet of the methane collecting device 110 for condensing the collected gas.

[0041] The air inlet of the heating device 130 is connected to the air outlet of the condensing device 120 and is used to heat the condensed gas to a preset temperature. The preset temperature is slightly higher than the gas temperature at the mouth and nose of the ruminant to ensure the accuracy of subsequent methane detection.

[0042] The air inlet of the methane detection device 140 is connected to the air outlet of the heating device 130, and is used to detect methane in the heated gas to obtain information on the methane content in the gas discharged from the mouth and nose of the ruminant.

[0043] Therefore, through the above-mentioned methane monitoring equipment 100 for ruminants, exhaled gas can be collected directly at the mouth and nose of the ruminant, and methane detection can be performed on the collected gas. Since the gas to be detected will not be mixed with the surrounding air, the methane detection device 140 can perform methane detection immediately. There is no need for long-term training of ruminants to adapt to the closed environment indoors, and there is no need for ruminants to stay indoors for a long time to ensure that the methane detection device 140 can detect methane information in the indoor gas. Therefore, the application of the above-mentioned methane monitoring equipment 100 for ruminants greatly shortens the methane detection cycle.

[0044] Since the humidity of the gas discharged from the mouth and nose of the ruminant is too high, and the methane detection device 140, as an electronic component, cannot directly detect the gas with too high humidity, and the gas with too high humidity will also affect the service life of the methane detection device 140, the condensation device 120 is used to condense the gas collected from the mouth and nose of the ruminant to condense part of the water vapor in the gas into liquid to reduce the water content in the gas, and then the condensed gas is heated by the heating device 130 to increase the saturated water vapor pressure, which can effectively prevent the condensation of water vapor in the methane detection device 140, thereby ensuring that the methane detection device 140 can accurately and long-term real-time monitoring of the gas. Therefore, the above-mentioned methane monitoring device 100 for ruminants has a faster detection response, a longer continuous detection capability and a higher detection accuracy.

[0045] In some embodiments, the methane monitoring device 100 for ruminants further includes a water mist separation device 150. The water mist separation device 150 has an air inlet 151, an air outlet 152, and a liquid discharge port 153. The air inlet 151 and the air outlet 152 are respectively connected to the air outlet of the condensing device 120 and the air inlet of the heating device 130. The liquid discharge port 153 is located at the bottom of the water mist separation device 150 and is used to discharge the liquid in the water mist separation device 150.

[0046] In actual applications, the water mist separation device 150 uses centrifugal separation technology so that the water in the condensed gas is thrown toward the inner wall and sinks to the bottom under the action of centrifugal force, so as to achieve the purpose of filtering the water in the gas, making the humidity of the gas lower, which is conducive to further improving the methane detection accuracy and further extending the service life of the methane detection device 140.

[0047] In some embodiments, a vacuum pump 160 is provided on the communication path between the condensing device 120 and the heating device 130. In the methane detection device for ruminants, the methane collecting device 110, the condensing device 120, the heating device 130, the vacuum pump 160 and the methane detection device 140 are sequentially connected to form a gas flow path, and the vacuum pump 160 is mainly used to form a negative pressure in the gas flow path to provide power for the flow of gas in the gas flow path.

[0048] Furthermore, in some embodiments, the methane monitoring device 100 for ruminants further includes a flow meter 170, a pressure, temperature and humidity testing device 180 and a control knob 190. The flow meter 170 is disposed on the communication path between the heating device 130 and the methane detection device 140, and is used to collect the flow information of the gas flowing out of the vacuum pump 160 in real time.

[0049] The pressure temperature and humidity testing device 180 includes a pressure sensor (not shown) and a temperature and humidity sensor (not shown). The pressure sensor is arranged on the communication path between the air inlet of the condensing device 120 and the air outlet of the methane detection device 140, and is used to monitor the pressure information of the gas in real time. The temperature and humidity sensor is arranged at the air outlet of the methane detection device 140, and is used to monitor the temperature information and humidity information of the gas discharged from the methane detection device 140 in real time. The control knob 190 is connected to the vacuum pump 160, and is used to receive interactive operations and control the speed of the vacuum pump 160 according to the interactive operations.

[0050] The flow meter 170 is used to monitor the flow of gas in the airflow passage in real time. When the flow meter 170 detects that the flow in the airflow passage is too small or too large, the rotation speed of the vacuum pump 160 can be adjusted by rotating the flow meter 170 to ensure that the flow in the airflow passage is maintained within a reasonable flow range, so as to achieve both high methane detection efficiency and methane detection accuracy.

[0051] The pressure sensor is used to measure the pressure information of the gas before it enters the condensing device 120, and the temperature and humidity sensor is used to measure the temperature information and humidity information of the gas exhausted by the methane detection device 140, so as to help the staff understand the gas pressure about to enter the condensing device 140 and the temperature and humidity of the gas after methane detection by the methane detection device 140.

[0052] In actual applications, the staff can choose whether to rotate the control knob 190 according to the pressure information, temperature information and humidity information obtained by the pressure, temperature and humidity testing device 180. When it is necessary to adjust the flow rate by adjusting the speed of the vacuum pump 160 by adjusting the control knob 190, the staff can also refer to the pressure information, temperature information, humidity information obtained by the pressure, temperature and humidity testing device 180 and the flow information obtained by the flow meter 170 to adjust the flow rate in the air flow path to a reasonable range, so as to ensure that the humidity, temperature and pressure of the gas at the air inlet of the methane detection device 140 can meet the detection requirements, while ensuring the condensation effect and heating effect of the gas.

[0053] Specifically, when the methane detection device 100 for ruminants includes the water mist separation device 150 , the air inlet and the air outlet of the vacuum pump 160 are respectively connected to the exhaust port 152 and the air inlet of the heating device 130 .

[0054] Please also read Figure 4 and Figure 5 In some embodiments, the methane monitoring device 100 for ruminants further includes a housing 201 with a hollow structure. The side wall of the housing 201 is provided with an air inlet mounting hole (not shown) and an air outlet mounting hole (not shown). The air inlet mounting hole is respectively connected to the air outlet of the methane detection device 140 and the air inlet of the condensation device 120. The air outlet mounting hole is connected to the air outlet of the methane detection device 140.

[0055] Specifically, when the methane monitoring equipment 100 for ruminants includes a water mist separator 150, a flow meter 170, a pressure, temperature and humidity testing device 180, and a control knob 190, the water mist separator 150, the flow meter 170, the pressure, temperature and humidity testing device 180, and the control knob 190 are all installed in the housing 201, and one end of the control knob 190 extends to the outside of the housing 201.

[0056] Thus, in the methane monitoring device 100 for ruminants, all parts except the methane collecting device 110 are integrated into the housing 201 to improve the compactness of the device structure, so that the methane monitoring device 100 for ruminants is smaller in size and easier to use.

[0057] Please refer again Figures 4 to 5Further, in some embodiments, the methane monitoring device 100 for ruminants also includes a first pipe joint 202 and a second pipe joint 203. The first pipe joint 202 and the second pipe joint 203 are respectively penetrated and fixed to the air inlet mounting hole and the air outlet mounting hole. One end of the first pipe joint 202 is detachably connected to the air outlet of the methane detection device 140 through a connecting hose 204, and the other end is detachably connected to the air inlet of the condensing device 120 through an air inlet pipe 205. One end of the second pipe joint 203 located in the housing 201 is detachably connected to the air outlet of the methane detection device 140 through an exhaust pipe 206.

[0058] Thus, the setting of the connecting hose 204 allows a high degree of freedom in the position between the methane collection device 110 and the housing 201, so as to further improve the convenience of methane detection for ruminants. The setting of the first pipe joint 202 and the second pipe joint 203 facilitates the detachable connection between the connecting hose 204 and the housing 201 and between the connecting pipe and the housing 201, and facilitates the replacement of the methane collection device 110, so that the methane monitoring device 100 for ruminants can meet the methane testing of ruminants of different sizes and breeds, and improves applicability.

[0059] Furthermore, in some embodiments, the methane monitoring device 100 for ruminants further includes a power storage device 207 installed in the housing 201. The power storage device 207 is electrically connected to the heating device 130 and the methane detection device 140, respectively. The power storage device 207 is used to provide electrical energy to the heating device 130 and the methane detection device 140, respectively. In actual use, the methane monitoring device 100 for ruminants can be used normally without an external power supply, further improving the convenience of use.

[0060] Furthermore, in some embodiments, a partition structure 2011 is provided in the housing 201. The partition structure 2011 is used to separate the space in the housing 201 into a working chamber 2013 and a power supply chamber 2012. The battery is installed in the power supply chamber 2012, and the condensing device 120, the heating device 130 and the methane detection device 140 are all installed in the working chamber 2013.

[0061] In this way, the partition structure 2011 is used to separate the power storage device 207 from other components in the casing 201 to reduce the probability of water entering the power storage device 207 when air leakage, water leakage, etc. occur during the detection process, thereby protecting the power storage device 207, extending the service life of the power storage device 207 and the safety of methane detection.

[0062] Specifically, when the methane monitoring device 100 for ruminants includes a vacuum pump 160, a water mist separation device 150, and a pressure, temperature, and humidity detection device 180, the power storage device 207 is electrically connected to the vacuum pump 160, the water mist separation device 150, and the pressure, temperature, and humidity detection device 180, respectively, and is used to supply power to the vacuum pump 160, the water mist separation device 150, and the pressure, temperature, and humidity detection device 180. At the same time, the vacuum pump 160, the water mist separation device 150, and the pressure, temperature, and humidity detection device 180 are all installed in the working chamber 2013.

[0063] Furthermore, in some embodiments, the methane monitoring device 100 for ruminants further includes a maintenance door 2014. A maintenance port (not shown) connected to the power supply chamber 2012 is provided on the side wall of the housing 201. The maintenance door 2014 matches the maintenance port and is arranged at the maintenance port. In practical applications, the maintenance door 2014 can be opened to replace or charge the power storage device 207, further improving the convenience of use of the methane monitoring device 100 for ruminants and extending the service life of the device.

[0064] Furthermore, in some embodiments, a handle structure 2015 is also provided on the housing 201. When in use, the staff can hold the handle structure 2015 to move the methane detection device for ruminants, which further improves the convenience of use of the device.

[0065] Further, in some embodiments, a hanging ring structure 2016 is also provided on the housing 201. When in use, the hanging ring structure 2016 can be used to hang the housing 201 and the components installed in the housing 201 together, or to lift and move, further improving the convenience of use of the device.

[0066] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A methane monitoring device for ruminants, characterized in that: include: a methane collection device configured to be worn on the snout of a ruminant to collect gas expelled from the snout of the ruminant; A condensing device, whose air inlet is connected to the air outlet of the methane collecting device, and is used to condense the collected gas; a heating device, the air inlet of which is connected to the air outlet of the condensing device and is used to heat the condensed gas to a preset temperature; The methane detection device has an air inlet connected to the air outlet of the heating device and is used to detect methane in the heated gas to obtain information on the methane content in the gas discharged from the mouth and nose of the ruminant.

2. The methane monitoring device for ruminants according to claim 1, characterized in that: It also includes a water mist separation device; the water mist separation device has an air inlet, an air outlet and a liquid discharge port; the air inlet and the air outlet are respectively connected to the air outlet of the condensing device and the air inlet of the heating device; the liquid discharge port is located at the bottom of the water mist separation device and is used to discharge the liquid in the water mist separation device.

3. The methane monitoring device for ruminants according to claim 1, characterized in that: A vacuum pump is provided on the communication passage between the condensing device and the heating device.

4. The methane monitoring device for ruminants according to claim 3, characterized in that: It also includes a flow meter, a pressure, temperature and humidity test device and a control knob; The flow meter is arranged on the communication path between the heating device and the methane detection device, and is used to collect the flow information of the gas flowing out of the vacuum pump in real time; The pressure, temperature and humidity testing device comprises a pressure sensor and a temperature and humidity sensor; the pressure sensor is arranged on the communication path between the air inlet of the condensing device and the air outlet of the methane detection device, and is used to monitor the pressure information of the gas in real time; the temperature and humidity sensor is arranged at the air outlet of the methane detection device, and is used to monitor the temperature information and humidity information of the gas discharged from the methane detection device in real time; The control knob is connected to the vacuum pump and is used to receive an interactive operation and control the rotation speed of the vacuum pump according to the interactive operation.

5. The methane monitoring device for ruminants according to claim 1, characterized in that: It also includes a casing with a hollow structure; the side wall of the casing is provided with an air inlet mounting hole and an air outlet mounting hole; the air inlet mounting hole is respectively connected to the air outlet of the methane detection device and the air inlet of the condensation device; the air outlet mounting hole is connected to the air outlet of the methane detection device.

6. The methane monitoring device for ruminants according to claim 5, characterized in that: It also includes a first pipe joint and a second pipe joint; the first pipe joint and the second pipe joint are respectively penetrated and fixed to the air inlet mounting hole and the air outlet mounting hole; one end of the first pipe joint is detachably connected to the air outlet of the methane detection device through a connecting hose, and the other end is detachably connected to the air inlet of the condensing device through an air inlet pipe; the end of the second pipe joint located in the casing is detachably connected to the air outlet of the methane detection device through an exhaust pipe.

7. The methane monitoring device for ruminants according to claim 5, characterized in that: It also includes a power storage device installed in the casing; the power storage device is electrically connected to the heating device and the methane detection device respectively.

8. The methane monitoring device for ruminants according to claim 7, characterized in that: A partition structure is provided in the housing; the partition structure is used to separate the space in the housing into a working chamber and a power supply chamber; The battery is installed in the power supply cavity, and the condensing device, the heating device and the methane detection device are all installed in the working cavity.

9. The methane monitoring device for ruminants according to claim 8, characterized in that: It also includes a maintenance door; the side wall of the housing is provided with a maintenance port connected to the power supply cavity; the maintenance door matches the maintenance port and is arranged at the maintenance port.

10. The methane monitoring device for ruminants according to claim 5, characterized in that: The housing is also provided with a handle structure; and / or The casing is also provided with a hanging ring structure.

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