Portable gas multi-parameter measuring and data uploading device

Abstract

The invention relates to a portable gas multi-parameter measuring and data uploading device, belongs to the technical field of coal mine safety detection, and aims at solving the problems that existing gas detection equipment is single in detection, insufficient in portability, low in data management efficiency, difficult to adapt to roof sampling and the like. The device comprises a multi-parameter sensor module for simultaneously detecting methane, carbon monoxide, carbon dioxide, oxygen and temperature; the control processing module is used for collecting and processing detection data, and is combined with a threshold value alarm unit to realize gas standard exceeding prompt; the wireless communication module is used for uploading the detection data to a monitoring platform in real time; the near field communication module is used for identity authentication and card punching; the power supply module provides long-time endurance; the shell adopts a lightweight design and is provided with an interface to be matched with the telescopic sampling rod to complete gas sampling in a top plate area. According to the invention, multi-parameter synchronous detection can be realized, real-time uploading and tracing of data are ensured, the detection flexibility and safety are improved, and manual recording errors are reduced.

Description

Technical Field

[0001] This invention belongs to the field of coal mine safety detection technology and relates to a portable gas multi-parameter measurement and data uploading device. Background Technology

[0002] Methane gas accidents in coal mines are the primary risk factor threatening miners' lives. Abnormal concentrations of methane, carbon monoxide, carbon dioxide, and oxygen, as well as changes in ambient temperature, can all trigger explosions, poisoning, or asphyxiation. Therefore, achieving rapid, accurate, and comprehensive gas parameter detection is crucial. However, current technologies in the field of portable gas detection still have the following prominent shortcomings: Limited detection parameters: Most portable detectors on the market can only detect methane concentration, or only single / small parameters such as carbon monoxide and oxygen. They cannot comprehensively grasp the state of multi-component gases downhole at once, resulting in one-sided risk assessment and easy omission of complex safety hazards.

[0003] Insufficient portability and operational flexibility: Traditional portable equipment is generally large in size and weighs more than 2 to 5 kg, which puts a burden on operators when carried for a long time; at the same time, there is a lack of effective roof sampling methods. When conducting roof gas accumulation detection in high-gas mines, it is only possible to rely on ladders or manual climbing, which poses great safety risks and operational difficulties.

[0004] Outdated data recording and transmission methods: Existing equipment mostly uses manual paper records or exports data via wired means afterward, resulting in problems such as recording delays, typos, and loss; the few devices with wireless capabilities only support Wi-Fi or Bluetooth, which cannot achieve reliable real-time uploads in the complex electromagnetic environment underground and areas without network access, resulting in poor data traceability and making it difficult to meet the rigid requirement of "whoever inspects, is responsible" for gas inspections in the "Coal Mine Safety Regulations".

[0005] Lack of identity binding and operation traceability mechanism: detection data cannot be matched one-to-one with specific inspectors, making it difficult to hold people accountable after an accident; at the same time, automatic check-in cannot be achieved, and the implementation of the gas inspection system becomes a mere formality.

[0006] Insufficient battery life and environmental adaptability: Ordinary equipment has a small battery capacity, and the continuous working time is usually less than 6 hours, which cannot meet the testing needs of a complete shift; some equipment has a low protection level and poor stability in the underground environment with high humidity, high dust and strong electromagnetic interference.

[0007] The aforementioned deficiencies make it difficult for existing portable gas detection equipment to meet the comprehensive requirements of modern mines for "accurate detection, real-time uploading, traceability, and roof sampling," which seriously restricts the improvement of coal mine safety informatization and intelligence levels.

[0008] Therefore, there is an urgent need to develop a new type of portable gas detection device that integrates multi-parameter synchronous detection, lightweight and portable design, long-distance sampling from the roof, NFC identity authentication, long battery life, offline caching, and multi-standard wireless real-time uploading, so as to comprehensively improve the efficiency, accuracy, and traceability of underground gas inspection and reduce the risk of gas accidents from the source. Summary of the Invention

[0009] In view of this, the purpose of this invention is to overcome the shortcomings of existing gas detection technologies, such as single-parameter limitations, insufficient portability, inefficient data management, and poor adaptability, and to provide a portable gas multi-parameter measurement and data uploading device that realizes multi-parameter gas detection, lightweight and portable design, real-time data uploading, and roof sampling detection.

[0010] To achieve the above objectives, the present invention provides the following technical solution: A portable gas multi-parameter measurement and data uploading device includes: The multi-parameter sensor module is used to simultaneously detect five parameters: methane, carbon monoxide, carbon dioxide, oxygen, and temperature. A control processing module, connected to the multi-parameter sensor module, is used to collect and process measurement data; A wireless communication module, connected to the control processing module, is used to upload the measurement data to an external server in real time; The Near Field Communication (NFC) module is connected to the control and processing module and is used to realize identity authentication and check-in functions; A power module is used to provide operating power to the device; The outer shell forms a lightweight and portable structure, and is adapted to a telescopic sampling rod to achieve gas sampling from the mine roof.

[0011] As a preferred embodiment, the multi-parameter sensor module is integrated into the same detection chamber to achieve simultaneous detection of multiple gases and temperatures.

[0012] As a preferred embodiment, the wireless communication module includes at least one of a Wi-Fi communication unit and a cellular mobile communication unit.

[0013] As a preferred embodiment, the near-field communication module (NFC) is used to interact with the worker's ID card to complete identity authentication and work attendance.

[0014] As a preferred embodiment, the control processing module further includes a storage unit for storing the measurement data and caching it locally when the network is unavailable.

[0015] As a preferred embodiment, the power module includes a 3000mAh rechargeable battery, which can support continuous operation for no less than 8 hours.

[0016] As a preferred embodiment, the control processing module further includes a threshold alarm unit, which is used to issue an audible and visual alarm when the concentration of methane, carbon monoxide, carbon dioxide or oxygen exceeds a preset threshold.

[0017] As a preferred embodiment, the weight of the outer shell body does not exceed 1.5 kg, and it is provided with an interface to fix the telescopic sampling rod to realize the sampling and detection of gas in the top plate area.

[0018] As a preferred embodiment, the telescopic sampling rod has an adjustable length for extending the sampling port to the roof of the roadway to collect gas samples and send them into the multi-parameter sensor module.

[0019] The beneficial effects of this invention are as follows: (1) By integrating five sensors for methane, carbon monoxide, carbon dioxide, oxygen and temperature into the same detection chamber, all five parameters can be measured simultaneously in one sampling, avoiding the defects of existing equipment with single parameters and multiple sampling, greatly improving detection efficiency and data consistency, and providing complete and reliable data support for composite gas risk assessment.

[0020] (2) The weight of the whole machine is controlled within 1.5kg. With the lightweight sampling rod that can be extended up to 3 meters, it can easily achieve long-distance safe sampling of the roof of the roadway and the gas accumulation area at high altitude. This fundamentally solves the problem that traditional equipment is bulky and cannot effectively detect roof gas, and greatly reduces the risk of high-altitude operations for workers.

[0021] (3) It integrates Wi-Fi and cellular mobile network dual-mode communication modules to support real-time data upload in the entire underground area; it has a built-in large-capacity storage unit to support offline caching and breakpoint resume; combined with NFC identity authentication and automatic check-in function, each piece of detection data is bound to the specific inspector, time and location, completely eliminating the problem of manual recording errors and unclear responsibilities, and fully meeting the rigid requirements of "whoever inspects, is responsible; whoever records, is responsible" in the Coal Mine Safety Regulations.

[0022] (4) Built-in independent threshold alarm unit, when methane ≥1.0%, carbon monoxide ≥24ppm, oxygen <19.5% or carbon dioxide exceeds the standard, a high-brightness LED and a ≥85dB buzzer alarm are immediately triggered. The alarm information is simultaneously uploaded to the ground monitoring center to realize integrated emergency linkage between underground and aboveground, and significantly shorten the accident response time.

[0023] (5) It adopts a 3000mAh intrinsically safe lithium battery, which can work continuously for ≥8 hours on a single full charge, which can meet the needs of a complete production shift; the whole machine reaches the Exib I Mb explosion-proof level and IP65 protection level, and has the ability to resist strong electromagnetic interference, ensuring long-term reliable operation in extreme environments such as high gas outburst mines.

[0024] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the portable gas multi-parameter measurement and data uploading device of the present invention; Figure 2 This is a schematic diagram of the device of the present invention used in conjunction with a telescopic sampling rod; Figure 3 This is a system block diagram of the device of the present invention. Detailed Implementation

[0026] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Example 1: Overall Structure of the Device like Figure 1 and Figure 3 As shown, this invention provides a portable gas multi-parameter measurement and data upload device with a total weight of ≤1.3kg. The outer shell 1 adopts a composite structure of aluminum-magnesium alloy frame and explosion-proof engineering plastic panel, achieving ExibⅠMb intrinsically safe explosion-proof rating and IP65 protection rating. The portable gas multi-parameter measurement and data upload device provided by this invention includes: The multi-parameter sensor module includes a methane sensor, a carbon monoxide sensor, a carbon dioxide sensor, an oxygen sensor, and a temperature sensor. These sensors are integrated into a single detection chamber. Gas enters the chamber through the inlet and is simultaneously detected by multiple sensors, achieving synchronous measurement of all five parameters and avoiding time differences and errors caused by multiple samplings. A miniature fan or airflow guide channel is installed within the detection chamber to ensure thorough gas mixing and improve detection accuracy. The multi-parameter sensor module is integrated into the same detection chamber at the front of the housing and includes a catalytic combustion methane sensor (range 0–100% LEL, resolution 0.01%), an electrochemical carbon monoxide sensor (0–1000 ppm), an electrochemical oxygen sensor (0–30% VOL), an NDIR infrared carbon dioxide sensor (0–10% VOL), and a PT1000 temperature sensor. The chamber incorporates a miniature vacuum pump (flow rate 300 ml / min) and a gas equalization plate, ensuring synchronous detection of all five parameters within ≤3 seconds with cross-interference ≤±2% in a single sampling.

[0030] The control and processing module includes a microprocessor, an analog-to-digital converter, a storage unit, and a threshold alarm unit. The microprocessor receives analog signals from the multi-parameter sensor module and performs digital processing. The storage unit caches detection data and can save it locally in case of wireless communication failure. The threshold alarm unit has built-in gas concentration thresholds. When the concentrations of methane, carbon monoxide, or carbon dioxide exceed the standard, or the oxygen concentration falls below the safety threshold, it immediately activates a buzzer and LED warning light to issue an audible and visual alarm. The control and processing module uses a 32-bit ARM Cortex-M7 main control chip, integrating a 16-bit ADC, an 8MB Flash storage unit, and an independent threshold comparator. When methane ≥ 1.0%, carbon monoxide ≥ 24 ppm, oxygen < 19.5%, carbon dioxide ≥ 1.5%, or temperature ≥ 40℃, the threshold alarm unit immediately activates a ≥ 85dB buzzer and a flashing red high-brightness LED, while simultaneously forcibly uploading the alarm record.

[0031] The wireless communication module includes at least one of a Wi-Fi unit and a cellular mobile communication unit. When within the coverage area of ​​the mine's local area network, detection data can be uploaded to the ground monitoring platform via Wi-Fi; in areas without Wi-Fi, it switches to cellular mobile communication to ensure the real-time and continuous nature of the detection data. The wireless communication module integrates Wi-Fi 6 (2.4G / 5G dual-band) and a 4G Cat.1 cellular module, supporting seamless switching between mine Wi-Fi hotspots and the public network on the ground. Actual testing shows that in a -800m horizontal tunnel, with a 4G signal strength ≥-95dBm, a data upload success rate of nearly 98% can still be achieved within ≤2 seconds.

[0032] Near Field Communication (NFC) module: Used for interaction with miner identification cards. Before inspection, staff must authenticate their identity by swiping their NFC cards. The system then binds the inspection data with the inspector's information, enabling traceability and accountability. The NFC module uses a 13.56MHz PN7160 chip with a reading distance of ≤5cm. After a miner swipes their standard M1 identification card, the device automatically records their worker ID and name, binding it to all inspection data for this and subsequent inspections, achieving "one person, one device, one data" traceability.

[0033] Power module: It adopts a 3000mAh rechargeable lithium battery, along with a power management circuit. The battery can support the device to work continuously for more than 8 hours when fully charged. It also supports Type-C interface charging and has overcharge protection and short circuit protection functions to ensure safety when used downhole.

[0034] The outer casing is composed of lightweight alloy and explosion-proof engineering plastic composite components, with a weight controlled within 1.5kg. It has good explosion-proof, waterproof, and dustproof performance, and meets the relevant standards for intrinsically safe mining equipment. The casing has a reserved interface for a telescopic sampling rod, which can be fixedly connected to the telescopic rod through quick-release buckles to achieve top plate sampling.

[0035] Telescopic sampling rod: Made of lightweight alloy material, it can be extended and adjusted to a length of 1.5 meters to 3 meters. A sampling port is located at the end of the rod; the collected gas is transported to the detection chamber through a gas guide tube to detect methane and harmful gases in the ceiling area.

[0036] Example 2: Data Processing and Upload Process Once the equipment is brought into the mine work area by the staff, the specific usage procedure is as follows: Operators authenticate their identity by swiping a card via NFC, and the system enters detection mode after confirming that everything is correct.

[0037] After the device is started, the multi-parameter sensor module synchronously detects the gas in the sampling chamber and generates data on the concentrations and temperature of methane, carbon monoxide, carbon dioxide, oxygen, and other substances.

[0038] The control processing module filters and calibrates the data to eliminate the effects of temperature fluctuations and sensor drift.

[0039] If the detection result exceeds the threshold, the threshold alarm unit will immediately activate the audible and visual alarm device and upload the alarm information along with the detection data.

[0040] When the wireless communication network is available, the detection data is uploaded to the mine dispatch center server in real time via Wi-Fi or cellular network; if the network is unavailable, the storage unit caches the detection data and automatically retransmits it when the network is restored.

[0041] The uploaded data records include the identity information of the testing personnel (derived from NFC card swipes), ensuring data traceability.

[0042] Example 3: Alarm and Security Protection During operation, the system immediately issues an alarm when the methane concentration exceeds 1.0% or the carbon monoxide concentration exceeds 24 ppm; similarly, an alarm is triggered when the oxygen concentration falls below 19.5%. The alarm device consists of a buzzer and a high-brightness LED light, ensuring that operators can take appropriate action even in noisy environments. Alarm data is simultaneously uploaded to a monitoring platform for remote monitoring by management personnel.

[0043] Example 4: Shell and Portability Design The device features a lightweight design, with the entire unit weighing less than 1.5kg. For easy portability, it has rubber grips on both sides and a buckle on the back for attachment to a worker's belt or shoulder strap. The casing interfaces are sealed, meeting IP65 protection standards and ensuring long-term use in high-humidity, high-dust underground environments.

[0044] Example 5: Application of Telescopic Sampling Rod When sampling roof gas, staff extend the telescopic sampling rod to the required height. A one-way valve at the sampling port ensures that gas enters the gas delivery pipe in one direction and is transported to the detection chamber. The telescopic rod itself features a modular design, allowing for quick assembly, disassembly, and extension to adapt to different tunnel heights. The interface with the outer casing uses a quick-release snap-fit ​​connection, ensuring secure installation and allowing for rapid disassembly when needed.

[0045] Example 6: Power Supply and Battery Life The power module uses a 3000mAh lithium battery, providing over 8 hours of continuous operation, meeting the needs of long shifts underground. The battery features an intrinsically safe, explosion-proof design and a power display function, allowing operators to check the remaining battery level at any time. The system will provide an advance warning when the battery is low to prevent interruptions in monitoring due to power depletion.

[0046] Through the above embodiments, the specific implementation of the present invention covers all the technical features proposed in the claims, including the integrated design of multi-parameter sensor modules, multi-standard selection of wireless communication modules, NFC identity authentication, data caching of storage units, battery life, threshold alarm, lightweight shell, and application of telescopic sampling rods, etc., which can effectively realize portable, multi-parameter, intelligent, and safe gas detection and data management.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A portable gas multi-parameter measurement and data uploading device, characterized in that: include: The multi-parameter sensor module is used to simultaneously detect five parameters: methane, carbon monoxide, carbon dioxide, oxygen, and temperature. A control processing module, connected to the multi-parameter sensor module, is used to collect and process measurement data; A wireless communication module, connected to the control processing module, is used to upload the measurement data to an external server in real time; The Near Field Communication (NFC) module is connected to the control and processing module and is used to realize identity authentication and check-in functions; A power module is used to provide operating power to the device; The outer shell forms a lightweight and portable structure, and is adapted to a telescopic sampling rod to achieve gas sampling from the mine roof.

2. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The multi-parameter sensor module is integrated into the same detection chamber to achieve simultaneous detection of multiple gases and temperatures.

3. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The wireless communication module includes at least one of a Wi-Fi communication unit and a cellular mobile communication unit.

4. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The near-field communication module (NFC) is used to interact with worker ID cards to complete identity authentication and work attendance tracking.

5. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The control processing module further includes a storage unit for storing the measurement data and caching it locally when the network is unavailable.

6. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The power module includes a 3000mAh rechargeable battery, which can support continuous operation for no less than 8 hours.

7. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The control processing module further includes a threshold alarm unit, which is used to issue an audible and visual alarm when the concentration of methane, carbon monoxide, carbon dioxide or oxygen exceeds a preset threshold.

8. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The outer shell weighs no more than 1.5 kg and is equipped with an interface to fix the telescopic sampling rod, so as to realize the sampling and detection of gas in the top plate area.

9. The portable gas multi-parameter measurement and data uploading device according to claim 1, characterized in that: The telescopic sampling rod has an adjustable length and is used to extend the sampling port to the roof of the roadway to collect gas samples and send them into the multi-parameter sensor module.

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