Methane concentration measuring device and system
By combining the laser ranging module and the methane telemetry module, the problem of low methane concentration detection accuracy in the existing technology is solved, higher-precision methane concentration measurement is achieved, and the management and control capabilities of methane emissions are improved.
Patent Information
- Application Number
- CN202420560043.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-21
AI Technical Summary
When detecting methane concentration in coal mines, the existing gas detection sensors have low accuracy and cannot meet the PPm level requirements, resulting in poor statistical accounting capabilities for methane emissions and increasing the difficulty of monitoring and supervision.
By combining the laser ranging module and the methane telemetry module, the laser ranging module is used to measure the distance information of the methane air mass. The methane telemetry module measures the unit concentration, and the CPU performs data processing to determine the target methane concentration.
The accuracy of methane concentration measurement is significantly improved, thereby improving the management and control capabilities of methane emissions.
Smart Images
Figure CN222379583U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas monitoring, in particular to a methane concentration measuring device and system. Background Art
[0002] Coal mines produce a large amount of methane during operation. In order to respond to the notice of the "Methane Emission Control Action Plan" issued by the Ministry of Ecology and Environment and other 11 departments, and to improve the resource utilization rate of urban domestic waste and the harmless disposal rate of urban sludge in the country, it is necessary to improve the methane emission control capabilities and management levels, so as to further improve the utilization level of coal mine gas. At present, the existing technology proposes that the methane concentration in the mine can be detected by gas detection sensors, but the detection accuracy of existing gas detection sensors is low and cannot meet the requirements of the PPm level, resulting in poor statistical accounting capabilities for methane emissions, which increases the difficulty of monitoring and regulating methane emissions. Utility Model Content
[0003] In view of this, the purpose of the present invention is to provide a methane concentration measurement device and system, which can significantly improve the accuracy of methane concentration measurement by combining a laser ranging module and a methane telemetry module, thereby improving the management and control capabilities of methane emissions.
[0004] In the first aspect, an embodiment of the utility model provides a methane concentration measuring device, including: a CPU, a laser ranging module and a methane telemetry module, wherein the CPU is connected to the laser ranging module and the methane telemetry module respectively; wherein the methane telemetry module is used to measure the unit concentration of the methane gas mass, wherein the unit concentration is the product of the methane concentration and the standard thickness; the laser ranging module is used to measure the distance information of the methane gas mass; the CPU is used to perform data processing on the unit concentration and distance information of the methane gas mass to determine the target methane concentration at the position to be measured.
[0005] In one embodiment, the methane telemetry module includes: a first laser and a lens, the first laser and the lens are connected; wherein the first laser is used to emit laser light straight ahead at a preset wavelength; the lens is used to converge the laser light and adjust the laser emission angle so that the laser light is converged and emitted to the methane gas mass.
[0006] In one embodiment, the methane telemetry module includes: a methane concentration detector, which is connected to the first laser; wherein the methane concentration detector is used to receive the first reflected laser corresponding to the laser emitted by the first laser, and determine the unit concentration of the methane gas mass based on the attenuation degree of the first reflected laser.
[0007] In one embodiment, the laser ranging module includes: a second laser: wherein the second laser is used to emit laser light at a preset wavelength straight ahead, wherein the wavelength of the laser light emitted by the second laser is different from that of the first laser.
[0008] In one embodiment, the laser ranging module includes: a ranging control module, which is connected to the second laser: wherein the ranging control module is used to receive a second reflected laser corresponding to the laser emitted by the second laser, and determine the distance information of the methane gas mass based on the reflection time interval of the second reflected laser.
[0009] In one embodiment, the methane concentration measuring device further includes: a transmission module, which is connected to the CPU; wherein the transmission module is used to transmit data of the target methane concentration, and the unit concentration and distance information of the methane gas mass.
[0010] In one embodiment, the methane concentration measuring device also includes: a power supply module, which is respectively connected to the CPU, the laser ranging module and the methane telemetry module; wherein the power supply module is used to supply power to the CPU, the laser ranging module and the methane telemetry module.
[0011] In one embodiment, the methane concentration measuring device further includes: a protective shell, the protective shell includes: a signal interface, and the signal interface is connected to the transmission module and the external device respectively.
[0012] In one embodiment, the protective housing further includes: a power interface, which is connected to the power module and the external power supply device respectively.
[0013] In the second aspect, an embodiment of the utility model also provides a methane concentration measurement system, comprising: an external device, and a methane concentration measurement device as described in any one of the first aspects above; the external device communicates with the methane concentration measurement device via a signal interface, and the external device is used to input the target methane concentration of the location to be measured.
[0014] The embodiments of the present invention bring the following beneficial effects:
[0015] The utility model provides a methane concentration measurement device and system, including: a CPU, a laser ranging module and a methane telemetry module, wherein the CPU is connected to the laser ranging module and the methane telemetry module respectively; wherein the methane telemetry module is used to measure the unit concentration of the methane gas mass, wherein the unit concentration is the product of the methane concentration and the standard thickness; the laser ranging module is used to measure the distance information of the methane gas mass; the CPU is used to perform data processing on the unit concentration and distance information of the methane gas mass, and determine the target methane concentration of the position to be measured. The above device can significantly improve the accuracy of methane concentration measurement, thereby improving the management and control capabilities of methane emissions.
[0016] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.
[0017] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of a methane concentration measuring device provided in an embodiment of the utility model;
[0020] Figure 2 A schematic diagram of the structure of a methane telemetry module provided in an embodiment of the utility model;
[0021] Figure 3 A schematic diagram of the structure of a laser ranging module provided by an embodiment of the utility model;
[0022] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Coal mines produce a large amount of methane during operation, which causes serious harm to the environment and the health of mine workers. At present, in order to improve the methane emission control capability and management level, so as to further improve the utilization level of coal mine gas, the methane concentration in the mine can be detected by a gas detection sensor. However, the detection accuracy of the gas detection sensor proposed in the prior art is low and cannot meet the requirements of the PPm level, resulting in poor statistical accounting capabilities for methane emissions, which increases the difficulty of monitoring and regulating methane emissions. Based on this, an embodiment of the utility model provides a methane concentration measurement device. By combining a laser ranging module and a methane telemetry module, the accuracy of methane concentration measurement can be significantly improved, thereby improving the management and control capabilities of methane emissions.
[0025] See also Figure 1 The utility model provides a methane concentration measuring device, comprising: a CPU, a laser ranging module and a methane telemetry module, wherein the CPU is connected to the laser ranging module and the methane telemetry module respectively, wherein the methane telemetry module is used to measure the unit concentration of the methane gas mass, the unit concentration being the product of the methane concentration and the standard thickness, the laser ranging module is used to measure the distance information of the methane gas mass, the CPU is used to perform data processing on the unit concentration and distance information of the methane gas mass, and determine the target methane concentration at the position to be measured, and in one embodiment, the methane concentration measuring device also includes The methane concentration measuring device includes: a transmission module and a power supply module, the transmission module is connected to the CPU, and the power supply module is respectively connected to the CPU, the laser ranging module and the methane telemetry module, wherein the transmission module is used to transmit data on the target methane concentration, and the unit concentration and distance information of the methane gas mass, and the power supply module is used to power the CPU, the laser ranging module and the methane telemetry module. In another embodiment, the methane concentration measuring device also includes: a protective shell, the protective shell includes: a signal interface and a power supply interface, the signal interface is respectively connected to the transmission module and the external device, and the power supply interface is respectively connected to the power supply module and the external power supply device.
[0026] The methane concentration measurement device provided by the embodiment of the utility model can significantly improve the accuracy of methane concentration measurement by combining a laser ranging module and a methane telemetry module, thereby improving the management and control capabilities of methane emissions.
[0027] See also Figure 2 The structure diagram of a methane telemetry module shown in the figure includes: a methane concentration detector, a first laser and a lens, the first laser and the lens are connected, and the methane concentration detector is connected to the first laser, wherein the first laser is used to emit laser light at a preset wavelength straight ahead, the lens is used to converge the laser light and adjust the laser emission angle so that the laser light is converged and emitted to the methane gas mass, and the methane concentration detector is used to receive the first reflected laser light corresponding to the laser light emitted by the first laser, and determine the unit concentration of the methane gas mass according to the attenuation degree of the first reflected laser light. In actual application, when the laser light emitted by the first laser passes through After the leaked methane gas mass, the laser is reflected by the reflecting surface and passes through the gas mass again to return to the methane concentration detector. The methane concentration detector can then complete the bending concentration measurement. Furthermore, since the leaked methane gas mass is blown by the wind, it is constantly changing and unevenly distributed in space and time. In addition, since the distance between the instrument and the reflector is uncertain, the thickness of the methane gas mass is also uncertain. Therefore, in order to describe the methane concentration value under this state, it is necessary to use the unit concentration concept expression, where the reflector can be a mine wall, etc., and the unit concentration (ppm.m) = methane concentration (ppm) × standard thickness (1m).
[0028] See also Figure 3 The schematic diagram of the structure of a laser ranging module is shown, the laser ranging module includes: a second laser and a ranging control module, the ranging control module is connected to the second laser, wherein the second laser is used to emit laser light at a preset wavelength to the front, the wavelength of the laser emitted by the second laser is different from that of the first laser, the ranging control module is used to receive a second reflected laser corresponding to the laser emitted by the second laser, and determine the distance information of the methane gas mass according to the reflection time interval of the second reflected laser. In practical applications, based on the measurement principle of the above-mentioned methane telemetry module, the methane telemetry module can only perform rough measurements, and the unit concentration can be understood as the methane telemetry module and the reflection The concentration of methane molecules in the straight line between the targets is uniformly compressed or expanded to an area with a thickness of 1 meter. For example, the measurement value of the methane telemetry module for a methane air mass with a thickness of 5 meters and a concentration of 20ppm on its detection line is 100ppm.m, which is equivalent to the air mass being compressed to a thickness of 1 meter and a concentration of 100ppm. However, for an air mass with a thickness of 0.5 meters and a concentration of 200ppm on its detection line, its measurement value is also 100ppm, which is equivalent to the air mass being expanded to a thickness of 1 meter and a concentration of 100ppm. Therefore, it is necessary to combine the methane telemetry module with the laser ranging module to obtain the accurate target methane concentration at the location to be measured.
[0029] For the methane concentration measuring device provided in the aforementioned embodiment, the embodiment of the utility model also provides a methane concentration measuring system, which includes the methane concentration measuring device provided in the aforementioned embodiment and an external device connected to the methane concentration measuring device, the external device is used to enter the target methane concentration of the location to be measured, and detect and alarm for the target methane concentration.
[0030] The present utility model also provides an electronic device, such as Figure 4 As shown, it is a schematic diagram of the structure of the electronic device, wherein the electronic device includes a processor 41 and a memory 42, the memory 42 stores machine executable instructions that can be executed by the processor 41, and the processor 41 executes the machine executable instructions to realize the above-mentioned coal mine methane emission monitoring.
[0031] exist Figure 4 In the illustrated embodiment, the electronic device further includes a bus 43 and a communication interface 44 , wherein the processor 41 , the communication interface 44 and the memory 42 are connected via the bus.
[0032] The memory 42 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 44 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.
[0033] The processor 41 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 41. The above processor 41 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the utility model can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiments of the utility model can be directly embodied as a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software module can be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register or other mature storage media in the art. The storage medium is located in the memory, and the processor 41 reads the information in the memory 42 and completes the steps of coal mine methane emission monitoring in the above embodiment in combination with its hardware.
[0034] An embodiment of the utility model also provides a machine-readable storage medium, which stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement the above-mentioned coal mine methane emission monitoring. The specific implementation can be referred to the aforementioned method embodiment, which will not be repeated here.
[0035] The computer program product of the methane concentration measuring device and electronic device provided in the embodiment of the utility model includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the coal mine methane emission monitoring described in the previous method embodiment. The specific implementation can be found in the method embodiment and will not be repeated here.
[0036] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that can be executed by a processor. Based on this understanding, the technical solution of the utility model, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the utility model. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.
[0037] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0039] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.
Claims
1. A methane concentration measuring device, characterized in that: include: CPU, laser ranging module and methane telemetry module, wherein the CPU is connected to the laser ranging module and the methane telemetry module respectively; wherein, The methane telemetry module is used to measure the unit concentration of the methane gas mass, wherein the unit concentration is the product of the methane concentration and the standard thickness; The laser distance measurement module is used to measure the distance information of the methane gas mass; The CPU is used to perform data processing on the unit concentration of the methane gas mass and the distance information to determine the target methane concentration at the location to be measured.
2. The methane concentration measuring device according to claim 1, characterized in that: The methane telemetry module comprises: a first laser and a lens, wherein the first laser and the lens are connected; wherein, The first laser is used to emit laser light at a preset wavelength straight ahead; The lens is used to converge the laser and adjust the laser emission angle so that the laser is emitted to the methane gas mass after being converged.
3. The methane concentration measuring device according to claim 2, characterized in that: The methane remote sensing module includes: a methane concentration detector, which is connected to the first laser; wherein, The methane concentration detector is used to receive the first reflected laser corresponding to the laser emitted by the first laser, and determine the unit concentration of the methane gas mass according to the attenuation degree of the first reflected laser.
4. The methane concentration measuring device according to claim 1, characterized in that: The laser ranging module includes: a second laser: wherein, The second laser is used to emit laser light at a preset wavelength toward the front, wherein the wavelength of the laser light emitted by the second laser is different from that of the first laser.
5. The methane concentration measuring device according to claim 4, characterized in that: The laser ranging module includes: a ranging control module, and the ranging control module is connected to the second laser: wherein, The distance measurement control module is used to receive the second reflected laser corresponding to the laser emitted by the second laser, and determine the distance information of the methane gas mass according to the reflection time interval of the second reflected laser.
6. The methane concentration measuring device according to claim 1, characterized in that: Also includes: A transmission module, the transmission module is connected to the CPU; wherein, The transmission module is used for transmitting data of the target methane concentration, and the unit concentration and distance information of the methane gas mass.
7. The methane concentration measuring device according to claim 1, characterized in that: Also includes: A power supply module, wherein the power supply module is connected to the CPU, the laser ranging module and the methane telemetry module respectively; wherein, The power supply module is used to supply power to the CPU, the laser ranging module and the methane telemetry module.
8. The methane concentration measuring device according to claim 1, characterized in that: Also includes: The protective shell comprises: a signal interface, and the signal interface is connected to the transmission module and the external device respectively.
9. The methane concentration measuring device according to claim 8, characterized in that: The protective shell also includes: a power interface, which is connected to the power module and the external power supply device respectively.
10. A methane concentration measurement system, characterized in that: Comprising: an external device, and the methane concentration measuring device according to any one of claims 1 to 9; The external device communicates with the methane concentration measuring device via a signal interface, and the external device is used to input a target methane concentration at a location to be measured.