Wireless intelligent gas monitor

Abstract

The present application relates to the field of gas detection, in particular to a wireless intelligent gas monitor; comprising: a portable detection terminal, a remote safety management platform and a gateway device; the portable detection terminal comprises a device host and a separate pumping accessory, and the device host is integrated with a diffusion air inlet for collecting gas; through the micro air pump on the separate pumping accessory and the diffusion air inlet on the device host, two sampling modes of diffusion sampling mode and pumping sampling mode are realized respectively. The present application realizes the tool-free quick switching of diffusion and pumping dual sampling modes by the combination mode of the separate detachable pumping accessory and the device host, and adapts to different sampling scene requirements; the present application collects parameters such as gas density, wind speed, temperature and humidity at multiple heights through the environment collection unit, and the collection and judgment unit quantitatively analyzes the gas interference value and the environmental interference value through density gradient calculation and environmental parameter time opening comparison, so as to realize the automatic switching of the sampling mode.

Description

Technical Field

[0001] This invention relates to the field of gas detection, and in particular to a wireless intelligent gas monitor. Background Technology

[0002] Wireless intelligent gas monitors are devices used in industrial production, environmental monitoring, public safety and other fields to detect the concentration of specific gases in real time; at the same time, the scene adaptability, detection accuracy, ease of use and communication stability of the gas monitor are directly related to the monitoring effect and the timeliness of safety warning. However, existing gas monitors are difficult to meet the diverse and accurate monitoring needs, which are reflected in the following aspects: (1) Existing gas monitors mostly adopt a single sampling mode or an integrated design of pump adsorption component and host; the single mode cannot simultaneously adapt to the closed space with uniform and stable gas and the scene with gas stratification and environmental fluctuation, resulting in data distortion. At the same time, the high energy consumption of the pump adsorption component results in low battery life of the monitor; the integrated design is complicated to disassemble and assemble, and the pump adsorption component failure requires whole machine repair, resulting in high maintenance costs; at the same time, the traditional gas monitor has a single wearing method and cannot adapt to the wearing needs of different working scenarios such as shoulder, waist, chest.

[0003] (2) The existing gas sampling mode switching relies on manual judgment, and the analysis of interference factors lacks basis. It does not combine the gas distribution gradient at multiple altitudes and the time-series changes of environmental parameters. Gas stratification will result in single-point sampling only obtaining local gas. The violent fluctuations in wind speed, temperature and humidity will disrupt the sampling concentration balance. The manual switching response is lagging, which can easily lead to mode switching errors and result in distorted detection data.

[0004] (3) Traditional gas monitors use fixed paths and cycles for network transmission, and do not establish a correlation between the urgency of parameters and network status, which affects the efficiency of risk management. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wireless intelligent gas monitor, comprising: a portable detection terminal, a remote safety management platform, and a gateway device; wherein, the portable detection terminal includes a device host and an independent pump adsorption component, and the device host integrates a diffuser-type air inlet for collecting gas.

[0006] The independent pump adsorption component is detachably connected to the main unit of the device; through the micro air pump on the independent pump adsorption component and the diffusion air inlet on the main unit of the device, two sampling modes are realized respectively: diffusion sampling mode and pump suction sampling mode.

[0007] The device host is also equipped with an environmental acquisition unit and an acquisition judgment unit. The environmental acquisition unit is used to collect environmental parameters; the acquisition judgment unit analyzes the environmental impact based on the environmental parameters and selects the sampling mode according to the environmental impact.

[0008] The remote security management platform is used to determine the network transmission path and transmission cycle based on the status of parameters collected by the portable detection terminal and the network status.

[0009] Furthermore, the pump adsorption component has a built-in miniature air pump, air passage, filter and pump inlet; the independent pump adsorption component is detachably double-locked by a combination of buckles and magnetic attraction.

[0010] Furthermore, the side of the main unit of the device is provided with a guide groove and multiple strong magnets, and the corresponding position of the pump adsorption component is provided with a matching snap-fit ​​spring and a magnetically conductive metal sheet. At the same time, the main unit of the device and the pump adsorption component are electrically connected through elastic probe contacts set at corresponding positions.

[0011] Furthermore, the back of the device host is machined with an installation interface for installing a quick-wearing structure.

[0012] The quick-wearing structure includes shoulder clips, chest clips, and waist clips made of highly elastic and non-slip material, and each accessory is equipped with a connection structure that is compatible with the device host's installation interface.

[0013] Furthermore, the environmental impact analysis method is as follows: the environmental acquisition unit collects environmental parameters at multiple altitudes, including gas density, wind speed, temperature, and humidity.

[0014] The data acquisition and judgment unit analyzes the gas interference value and the environmental interference value based on environmental parameters at multiple altitudes, and uses the sum of the gas interference value and the environmental interference value as the environmental impact degree.

[0015] Furthermore, the analysis method for the gas interference value is as follows: the density difference is calculated by comparing the gas density collected at multiple altitudes with the standard gas density.

[0016] The height of the current acquisition location and the total height are obtained by a height sensor integrated into the environmental acquisition unit.

[0017] The difference in gas density at two adjacent heights is calculated, and the ratio of the calculated difference to the difference between the corresponding two heights is calculated. The absolute value of the ratio is taken as the density gradient value.

[0018] The average gradient value is obtained by arithmetically averaging multiple density gradients, and the product of the average gradient and the total height is used as the stratification risk index.

[0019] If the stratified risk index is not less than the stratified risk index threshold, the gas interference value is 1; otherwise, the gas interference value is 0.

[0020] Furthermore, the analysis method for the environmental interference value is as follows: the average values ​​of wind speed, temperature and humidity at multiple altitudes are calculated; the average temperature and average humidity after the average calculation are compared with the average temperature and average humidity before the set time window to obtain the temperature difference and humidity difference.

[0021] If the wind speed is less than the wind speed threshold, and the temperature difference and humidity difference are both less than the temperature and humidity thresholds, then the environmental disturbance value is 0; otherwise, the environmental disturbance value is 1.

[0022] Furthermore, the threshold of the stratified risk index is set as follows: In a known environment, the gas monitor is used to perform multiple environmental parameter measurements, and a set of benchmark measurement values ​​of the stratified risk index are obtained through analysis.

[0023] Calculate the mean and standard deviation of the benchmark measurements to determine the confidence value of the stratified risk index.

[0024] The confidence values ​​of the stratified risk index are corrected using an environmental adjustment factor to obtain the threshold of the stratified risk index.

[0025] Furthermore, the method for selecting the sampling mode based on the degree of environmental impact is as follows: if the degree of environmental impact is 0, that is, both the gas interference value and the environmental interference value are 0, then the diffusion sampling mode is selected.

[0026] If the environmental impact level is not 0, that is, at least one of the gas interference value and the environmental interference value is 1, then the pump sampling mode is selected.

[0027] Furthermore, the remote security management platform determines the network transmission path and transmission period based on the status of the parameters collected by the portable detection terminal and the network status in the following specific way: when the parameter values ​​collected by the portable detection terminal are all within the preset security threshold range and the network status is smooth, the remote security management platform determines to use a low-priority transmission path and sets the transmission period to a normal period.

[0028] When the collected parameter value exceeds the preset safety threshold but does not reach the alarm threshold, or when there is a delay in the network status, the remote security management platform switches to a medium-priority transmission path, and the transmission cycle is shortened to half of the normal cycle.

[0029] When the collected parameters are in an alarm state or the network is not working properly, the remote security management platform switches to a high-priority transmission path, prioritizes network bandwidth, and adjusts the transmission cycle to real-time transmission.

[0030] The beneficial effects of this system are as follows: This invention achieves tool-free and rapid switching between diffusion and pump suction sampling modes through the combination of an independently detachable pump adsorption component and the main unit, adapting to different sampling scenario requirements; the dual locking connection of buckles and magnetic attraction ensures efficient disassembly and assembly while resisting external forces such as vibration and collision, preventing loosening and displacement; the main unit and pump adsorption component are precisely positioned through guide grooves, and elastic probe contacts replace traditional wired plugging or soldering, which not only offsets slight deviations during disassembly and assembly but also avoids interface wear; the pump adsorption component can be replaced individually, reducing maintenance costs, and the scene-specific switching mode reduces the energy consumption of the micro air pump during continuous operation, improving the equipment's endurance; at the same time, this invention achieves diversified and rapid wearing through the universal installation interface on the back of the main unit, combined with shoulder clips, chest clips, and waist clips made of high elasticity and non-slip material, and adapts to the fixation requirements of different working scenarios such as shoulders, waist, and chest.

[0031] This invention collects parameters such as gas density, wind speed, temperature, and humidity at multiple altitudes through an environmental acquisition unit. The acquisition and judgment unit performs quantitative analysis of gas interference values ​​and environmental interference values ​​by calculating density gradients and comparing environmental parameters over time windows, thereby achieving automatic switching of sampling modes. This allows for real-time matching of sampling modes with environmental conditions without manual intervention, maintaining low energy consumption in interference-free scenarios and ensuring sampling accuracy through a pumping mode when interference exists, thus improving the reliability of detection data.

[0032] The remote security management platform of this invention dynamically adjusts the transmission path and cycle based on the three-level status of security, early warning and alarm of the collected parameters, combined with the three-level status of network smoothness, delay and poorness; thus avoiding the bandwidth waste and critical information delay problems of fixed transmission mode. Attached Figure Description

[0033] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0034] Figure 1 This is a connection diagram of the wireless intelligent gas monitor of the present invention.

[0035] Figure 2 This is a schematic diagram of the structural composition of the pump adsorption component of the present invention. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0037] Please see Figure 1 A wireless intelligent gas monitor includes: a portable detection terminal, a remote safety management platform, and a gateway device; wherein, the portable detection terminal includes a device host and an independent pump adsorption component, the device host is integrated with a diffuser-type air inlet for collecting gas; the independent pump adsorption component is detachably connected to the device host; through the micro air pump on the independent pump adsorption component and the diffuser-type air inlet on the device host, two sampling modes are respectively realized: a diffusion sampling mode and a pump-suction sampling mode.

[0038] Gas monitoring scenarios vary in their environments. In some indoor enclosed spaces, active air extraction is not required. Therefore, diffusion sampling is suitable for scenarios with uniform gas and stable environment. However, in complex scenarios such as gas stratification and unstable environment, active pumping is required to obtain accurate samples. The dual-mode design of this invention is designed to adapt to gas monitoring in multiple scenarios.

[0039] Existing gas monitors mostly adopt a single sampling mode or an integrated design of the pump adsorption component and the main unit. The dual-mode design of this invention allows for quick, reliable, and tool-free switching of sampling modes without replacing the entire unit. At the same time, the two sampling modes can be switched according to different scenarios, which can reduce the power consumption and maintenance costs of continuous operation of the micro gas pump. Furthermore, the pump adsorption component can be replaced separately in case of failure, without the need to repair the entire unit.

[0040] It should be noted that the gateway device and the detector are detachably connected. The gateway device is the physical hub and intelligent node in the entire system architecture that enables reliable communication in areas without public network signals. For example, it is installed and connected when the gas monitor is used in areas without public network signals, signal edges, or weak coverage areas. The gateway device will continuously package, compress, and encrypt environmental data and alarm information collected from the portable detection terminal, and connect to the remote safety management platform through built-in 4G / Ethernet / Wi-Fi modules.

[0041] In addition, the main unit of the device is equipped with a custom-designed lithium-ion battery pack, and there is also a separate compartment inside the main unit that can hold two AA batteries, isolated from the main power circuit. When the lithium-ion battery pack is removed or completely depleted, the device uses battery power to maintain critical detection, alarm, and positioning functions.

[0042] In an embodiment of the present invention, please refer to Figure 2 The pump adsorption component has a built-in miniature air pump, air passage, filter and pump inlet; the independent pump adsorption component is detachably double-locked by a combination of buckle and magnetic attraction.

[0043] Since testing personnel often need to quickly switch sampling modes, the accessories need to be efficiently assembled and disassembled; at the same time, the equipment may shake or collide during the testing process, so the connection needs to be firm and not fall off. Double locking can avoid the problem of a single buckle being easy to loosen or a single magnetic attraction being easy to shift; at the same time, the portable terminal needs to take into account both functional expansion and lightweight size. The independent pump suction part detachable design allows users to remove the accessories when the pump suction mode is not needed, reducing the weight of the equipment and improving portability.

[0044] Single snap-fit ​​connections are prone to loosening, single magnetic connections are prone to displacement, and commonly used threaded connections are cumbersome to install and disassemble. Therefore, this invention adopts a double locking connection of snap-fit ​​and magnetic attraction, which makes the connection more reliable. The double locking resists external forces such as vibration and collision, and the magnetic pre-fixing and snap-fit ​​locking can quickly complete the installation and disassembly.

[0045] Specifically, the side of the main unit of the device is provided with a guide groove and multiple strong magnets, and the corresponding position of the pump adsorption component is provided with a matching snap-fit ​​spring and a magnetically conductive metal sheet. At the same time, the main unit of the device and the pump adsorption component are electrically connected through elastic probe contacts set at corresponding positions.

[0046] The combination of the guide groove and the magnetic snap-fit ​​ensures accurate positioning during disassembly and assembly, avoiding misalignment that could lead to poor air circuit sealing or electrical contact failure, thus reducing operational difficulty. Meanwhile, the elastic probe contacts replace the commonly used wired plug-in or soldered connections, satisfying the electrical conduction requirements of the detachable design while using the elastic structure to offset slight deviations during disassembly and assembly, ensuring the stability of power supply and signal transmission, and avoiding interface wear caused by frequent plugging and unplugging.

[0047] Furthermore, in an embodiment of the present invention, the back of the device host is machined with an installation interface for installing a quick-wearing structure.

[0048] The quick-wearing structure includes shoulder clips, chest clips, and waist clips made of highly elastic and non-slip material, and each accessory is equipped with a connection structure that is compatible with the device host's installation interface.

[0049] Compared to existing methods of wearing the device, which suffer from limited options, rigid materials, and poor anti-slip properties, this invention utilizes shoulder clips, chest clips, and waist clips, enabling the monitor to be used in various work scenarios. Furthermore, the highly elastic material conforms to the body, providing greater wearing comfort and enhancing the anti-fall-off effect.

[0050] Considering that the accuracy of gas sampling is affected by both the gas's own distribution and external environmental interference, for example, the gas may be stratified in an indoor enclosed space but the environment is stable, while the gas may be uniform in an outdoor open area but the wind speed is too high. Both of these situations will affect the sampling effect of the diffusion sampling mode, thus requiring a more accurate pumping sampling mode.

[0051] Furthermore, considering that gas stratification can lead to diffusion sampling only collecting local gas, excessive wind speed and drastic changes in temperature and humidity can disrupt the concentration balance of diffusion sampling, resulting in data distortion; while pump-suction sampling has strong anti-interference capabilities, it consumes a lot of power and has high maintenance costs during continuous operation. Therefore, this invention needs to comprehensively analyze various interference scenarios from the above two dimensions to ensure the targeted nature of sampling mode switching.

[0052] The device host is also equipped with an environmental acquisition unit and an acquisition judgment unit. The environmental acquisition unit is used to collect environmental parameters; the acquisition judgment unit analyzes the environmental impact based on the environmental parameters and selects the sampling mode according to the environmental impact.

[0053] The main control chip of the device host controls the gas sampling path according to the sampling mode command output by the acquisition and judgment unit. When the command is a diffusion sampling mode, the gas diffuses naturally into the detection module through the diffusion inlet integrated into the device host under the action of concentration difference. When the command is a pump suction sampling mode, if the pump suction component is reliably connected to the device host and powered on through the elastic probe contact, the main control chip starts the miniature air pump built into the accessory; at this time, the negative pressure generated by the air pump causes the external gas to be actively drawn in mainly through the pump suction inlet on the pump suction component, flows through the filter and gas path in the accessory, and then enters the detection module of the device host. The pump suction mode is suitable for complex scenarios with gas stratification or environmental disturbances (such as excessive wind speed, drastic changes in temperature and humidity) to ensure the representativeness of the sampling; the diffusion mode is used for scenarios with uniform gas distribution and stable environment to reduce power consumption.

[0054] In an embodiment of the present invention, the method for analyzing the environmental impact is as follows: the environmental acquisition unit collects environmental parameters at multiple altitudes, including gas density, wind speed, temperature and humidity; there are no fewer than three of the aforementioned multiple altitudes.

[0055] The data acquisition and judgment unit analyzes the gas interference value and the environmental interference value based on environmental parameters at multiple altitudes, and uses the sum of the gas interference value and the environmental interference value as the environmental impact degree.

[0056] Gases may exhibit stratified distribution in vertical space due to density differences (some gases sink, some float), and relying solely on single-point concentration measurements cannot identify the risks associated with such uneven spatial distribution. Therefore, this invention aims to analyze the vertical gradient of gas density parameters at multiple altitudes to assess gas stratification interference (i.e., gas interference). Meanwhile, wind speed, temperature, and humidity are key environmental factors affecting gas diffusion equilibrium and sampling stability; their drastic changes constitute environmental disturbance interference (i.e., environmental interference). By quantifying these two types of interference separately and integrating them into a unified environmental impact level, the limitations of traditional methods that rely solely on single-point concentration thresholds are overcome.

[0057] In an embodiment of the present invention, the gas interference value is analyzed as follows: by using a height sensor integrated on the environmental acquisition unit, the height information of at least three measurement points distributed along the vertical direction is obtained.

[0058] For every two adjacent measurement points, calculate the ratio of their gas density difference to their height difference, and take the absolute value of this ratio as the density gradient value between the two adjacent measurement points.

[0059] Calculate the arithmetic mean of the density gradient values ​​of all adjacent measurement point pairs to obtain the average density gradient value.

[0060] The average density gradient value is multiplied by the total height range of the measured coverage to obtain the stratification risk index.

[0061] The total height range within the space represents the vertical spatial scale of the gas detection. Multiplying the average rate of change by this vertical spatial scale yields a dimensionless quantitative index that comprehensively characterizes the severity of gas stratification throughout the sampling space. The higher the value of this stratification risk index, the worse the uniformity of gas distribution in the vertical direction, and the more significant the stratification phenomenon.

[0062] The stratification risk index is compared with a preset stratification risk index threshold: if the stratification risk index is greater than or equal to the threshold, the gas interference value is determined to be 1, indicating that gas stratification is obvious; if the stratification risk index is less than the threshold, the gas interference value is determined to be 0, indicating that gas stratification is not obvious.

[0063] Specifically, the threshold of the stratified risk index is set as follows: In a known environment, the gas monitor is used to perform no less than 30 environmental parameter measurements, and a set of benchmark measurement values ​​of the stratified risk index are obtained through analysis.

[0064] Calculate the mean and standard deviation of the benchmark measurement, and use the sum of the mean and twice the standard deviation of the benchmark measurement as the confidence value of the stratified risk index.

[0065] An environmental adjustment factor is set according to the detection scenario. The confidence value of the stratified risk index is multiplied by the environmental adjustment factor to obtain the stratified risk index threshold.

[0066] For example, the environmental adjustment factor for the detection scenario is set manually based on experience. In common scenarios, the adjustment factor is 1.0 for indoor enclosed scenarios, 1.2 for outdoor open scenarios, and 1.3 for easily stratified scenarios such as chemical workshops. Users can also adjust the specific data through the human-machine interface according to actual monitoring needs. The initial confidence value is multiplied by the environmental adjustment factor to obtain the final stratification risk index threshold.

[0067] It should be noted that the environmental adjustment factor is set as follows: First, a basic adjustment factor range is set according to the scenario with different risk levels. For example, the basic adjustment factor range for low-risk indoor enclosed scenarios is 1.0-1.1, the basic adjustment factor range for medium-risk outdoor open scenarios is 1.15-1.25, and the basic adjustment factor range for high-risk chemical workshops and other easily stratified scenarios is 1.25-1.35, etc.

[0068] In practical applications, users can directly input or select the specific value of the environmental adjustment factor through the human-machine interface of the portable detection terminal or remote safety management platform, based on their on-site experience or requirements for monitoring sensitivity. The acquisition and judgment unit uses this parameter in the calculation of gas interference values, thereby ensuring that the stratified risk index threshold is matched with the risk characteristics of the current scenario.

[0069] This invention transforms gas stratification into quantifiable numerical indicators by separately calculating density difference, density gradient value, average gradient value, and stratification risk index. Compared with traditional subjective judgment, the analysis method of this invention is more accurate. At the same time, this invention corrects the threshold by using an environmental adjustment factor, which can adapt to different stratification risk scenarios such as indoor closed spaces, outdoor open spaces, and chemical workshops. It can accurately capture slight stratification interference in high-risk scenarios and avoid mode switching errors caused by oversensitivity in low-risk scenarios.

[0070] Considering that wind speed, temperature, and humidity are the core environmental factors affecting the speed and stability of gas diffusion, excessive wind speed will cause the gas to flow rapidly, making it impossible for diffusion sampling to capture a stable local gas concentration; drastic changes in temperature and humidity will change the physical properties of the gas, disrupt the sampling concentration balance, and thus affect the accuracy of the detection data.

[0071] Furthermore, considering that traditional environmental interference judgments often rely on single-point instantaneous parameter values ​​without considering spatial distribution uniformity and temporal changes, they are prone to misjudgment due to local instantaneous fluctuations. Excessive switching of sampling modes will increase equipment power consumption and maintenance costs. Therefore, it is necessary to conduct comprehensive analysis across multiple dimensions and time periods to accurately identify environmental interference.

[0072] In an embodiment of the present invention, the environmental interference value is analyzed as follows: the average values ​​of wind speed, temperature, and humidity at multiple altitudes are calculated; the average temperature and average humidity after the average calculation are compared with the average temperature and average humidity before the set time window to obtain the temperature difference and humidity difference; it should be noted that the historical average values ​​of environmental parameters are automatically stored and updated by the device, and the set time window is set to 5 minutes. This 5-minute setting can effectively capture the trend changes of environmental parameters, avoid misjudgment caused by instantaneous fluctuations, and ensure timely response to environmental anomalies, preventing delays in identifying real environmental interference due to an excessively long time window.

[0073] Set environmental parameter thresholds. If the wind speed is less than the wind speed threshold, and the temperature difference and humidity difference are both less than the temperature and humidity thresholds, then the environmental interference value is 0; otherwise, the environmental interference value is 1.

[0074] The wind speed threshold is 2 m / s, which can be adjusted to 3 m / s in open outdoor scenarios and 1.5 m / s in enclosed indoor scenarios; the temperature threshold is 3℃, which can be adjusted to 2℃ in high-precision detection scenarios and 4℃ in harsh environments; the humidity threshold is 5%RH, which can be adjusted to 8%RH in humid environments and 3%RH in dry environments; all thresholds can be manually modified by staff according to the detection accuracy requirements and scenario characteristics.

[0075] This invention combines the spatial uniformity of multi-height averages with the temporal variation trend of time window differences to replace the existing single-point instantaneous value judgment, avoiding misjudgments caused by local fluctuations and instantaneous deviations. At the same time, this invention sets the thresholds for wind speed, temperature, and humidity to be dynamic according to the detection scenario, so that this invention can adapt to the interference characteristics of different scenarios such as indoor closed spaces, outdoor open spaces, chemical workshops, and humid environments.

[0076] In an embodiment of the present invention, the method of selecting the sampling mode based on the degree of environmental impact is as follows: if the degree of environmental impact is 0, that is, both the gas interference value and the environmental interference value are 0, it indicates that neither the gas interference nor the environmental interference is significant, and at this time the diffusion sampling mode is selected.

[0077] If the environmental impact is not 0, meaning that at least one of the gas interference value and the environmental interference value is 1, it indicates that there is significant interference between the gas and the environment. In this case, the pump sampling mode should be selected.

[0078] This invention adopts a sampling mode selection method based on the degree of environmental impact, realizing real-time matching between the sampling mode and the environmental state; thus taking into account detection accuracy, ease of use, equipment economy and scene adaptability, solving the adaptation problem of traditional single mode or manual mode switching, and demonstrating the advantages of dual sampling mode.

[0079] The remote security management platform is used to determine the network transmission path and transmission cycle based on the status of parameters collected by the portable detection terminal and the network status.

[0080] Considering that the gas parameters collected by portable detection terminals are directly related to the urgency of safety warnings, and that network status affects the reliability and timeliness of data transmission, the requirements for transmission bandwidth and speed vary significantly in different scenarios.

[0081] Furthermore, the traditional fixed-period transmission strategy has significant limitations: First, maintaining a fixed high-frequency transmission during periods of stable data flow leads to inefficient use of network bandwidth. Second, the lack of a priority mechanism linked to data importance can cause critical alarm information to be delayed in the transmission queue, affecting alarm timeliness. Third, when network conditions are poor, a fixed transmission strategy can easily lead to data backlog or even loss, failing to guarantee the reliable delivery of critical data. Therefore, it is necessary to dynamically adjust the transmission method based on parameter and network conditions to increase the timeliness of important information transmission.

[0082] In an embodiment of the present invention, the remote safety management platform determines the network transmission path and transmission cycle based on the status of parameters collected by the portable detection terminal and the network status in the following specific way: The remote safety management platform establishes a communication connection with the portable detection terminal through a gateway device or directly, and receives two types of data in real time: gas parameter values ​​collected by the detection terminal and network status data between the terminal and the platform. The monitoring frequency is synchronized with the terminal sampling frequency.

[0083] The collected parameter values ​​are preset with two levels of thresholds: a safety threshold and an alarm threshold. The status is determined based on the real-time collected parameter values. If all collected parameter values ​​are within the safety threshold range, the status is determined to be safe. If the parameter value exceeds the safety threshold but does not reach the alarm threshold, the status is determined to be warning. If the parameter value reaches or exceeds the alarm threshold, the status is determined to be alarm. The thresholds of the above-mentioned parameters can be manually adjusted by the user according to the type of gas being detected and the requirements of the scenario.

[0084] Simultaneously, preset network latency and packet loss rate thresholds are used. If the network latency is less than 50ms and the packet loss rate is less than 5%, it is considered a smooth connection. If the latency is greater than or equal to 50ms but less than 200ms, or the packet loss rate is greater than or equal to 5% but less than 15%, it is considered a delayed connection. If the latency is not less than 200ms or the packet loss rate is not less than 15%, it is considered a blocked connection. The network status is detected and automatically classified in real time by the remote security management platform through the communication link. The classification judgment transforms vague judgment criteria into clear classification criteria, avoiding subjective judgment errors.

[0085] When the parameter values ​​collected by the portable detection terminal are all within the preset safety threshold range and the network status is smooth, the remote security management platform determines to use the low-priority transmission path and sets the transmission cycle to the normal cycle. It should be noted that the low-priority transmission path occupies the minimum bandwidth resources and shares the transmission channel with other low-importance data. The normal cycle is 60 seconds / time. The above transmission method is to upload the summary data at regular intervals to reduce network resource consumption.

[0086] When the collected parameter values ​​exceed the preset safety threshold but do not reach the alarm threshold, or when network latency occurs, the remote safety management platform switches to a medium-priority transmission path, and the transmission cycle is shortened to half of the normal cycle. It should be noted that the medium-priority transmission path occupies a medium bandwidth and takes precedence over low-priority data transmission. The above transmission method offsets the impact of network latency by increasing the transmission frequency or reducing the upload interval for transmitting parameters of the warning status, ensuring timely feedback of warning information.

[0087] When the collected parameters are in an alarm state or the network is not smooth, the remote security management platform switches to a high-priority transmission path, which takes priority in occupying network bandwidth and adjusts the transmission cycle to real-time transmission. It should be noted that the high-priority transmission path exclusively occupies a portion of the network bandwidth, takes precedence over all other data transmissions, and supports resuming interrupted transmissions.

[0088] This invention combines the importance determination of parameter status classification with the transmission feasibility assessment of network status classification to replace the existing fixed transmission path and cycle method, avoiding the problems of bandwidth resource waste and delay or loss of key alarm information; at the same time, this invention sets both parameter safety thresholds and alarm thresholds to be manually adjustable according to the type of gas being detected and the requirements of the scenario, so that this invention can adapt to the transmission timeliness of different scenarios.

[0089] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A wireless intelligent gas monitor, characterized in that, include: Portable detection terminal, remote safety management platform and gateway device; wherein, the portable detection terminal includes a device host and an independent pump adsorption component, and the device host integrates a diffuser-type air inlet for collecting gas; The independent pump adsorption component is detachably connected to the main unit of the equipment; through the micro air pump on the independent pump adsorption component and the diffuser air inlet on the main unit of the equipment, two sampling modes are respectively realized: diffusion sampling mode and pump suction sampling mode. The device host is also equipped with an environmental acquisition unit and an acquisition judgment unit. The environmental acquisition unit is used to collect environmental parameters; the acquisition judgment unit analyzes the environmental impact based on the environmental parameters and selects the sampling mode according to the environmental impact. The remote security management platform is used to determine the network transmission path and transmission cycle based on the data collection parameters and network status of the portable detection terminal; The method for analyzing the environmental impact is as follows: The environmental acquisition unit collects environmental parameters at multiple altitudes, including gas density, wind speed, temperature, and humidity. The data acquisition and judgment unit analyzes the gas interference value and the environmental interference value based on environmental parameters at multiple altitudes, and uses the sum of the gas interference value and the environmental interference value as the environmental impact degree. The analysis method for the gas interference value is as follows: The density difference is calculated by comparing the gas density collected at multiple altitudes with the standard gas density. The height of the current acquisition location and the total height are obtained by a height sensor integrated on the environmental acquisition unit; The difference between the gas densities at two adjacent heights is calculated, and the ratio of the calculated difference to the difference between the corresponding two heights is calculated. The absolute value of the ratio is taken as the density gradient value. The average gradient value is obtained by arithmetically averaging multiple density gradients, and the product of the average gradient and the total height is used as the stratification risk index. If the stratified risk index is not less than the stratified risk index threshold, the gas interference value is 1; otherwise, the gas interference value is 0. The method for analyzing the environmental disturbance values ​​is as follows: the average values ​​of wind speed, temperature, and humidity at multiple altitudes are calculated; the average temperature and average humidity after the average calculation are compared with the average temperature and average humidity before the set time window to obtain the temperature difference and humidity difference. If the wind speed is less than the wind speed threshold, and the temperature difference and humidity difference are both less than the temperature and humidity thresholds, then the environmental disturbance value is 0; otherwise, the environmental disturbance value is 1. The method for selecting the sampling mode based on the degree of environmental impact is as follows: If the environmental impact is 0, that is, both the gas interference value and the environmental interference value are 0, then the diffusion sampling mode is selected. If the environmental impact level is not 0, that is, at least one of the gas interference value and the environmental interference value is 1, then the pump sampling mode is selected.

2. The wireless intelligent gas monitor according to claim 1, characterized in that, The independent pump adsorption component has a built-in miniature air pump, air passage, filter and pump inlet; the independent pump adsorption component is detachably double-locked by a combination of buckles and magnetic attraction.

3. The wireless intelligent gas monitor according to claim 2, characterized in that, The device host is provided with a guide groove and multiple strong magnets on its side. The pump adsorption component is provided with matching snap-fit ​​springs and magnetic metal sheets at corresponding positions. At the same time, the device host and the pump adsorption component are electrically connected through elastic probe contacts at corresponding positions.

4. The wireless intelligent gas monitor according to claim 1, characterized in that, The back of the device host is machined with an installation interface for installing a quick-wearing structure; The quick-wearing structure includes shoulder clips, chest clips, and waist clips made of highly elastic and non-slip material, and each accessory is equipped with a connection structure that is compatible with the device host's installation interface.

5. The wireless intelligent gas monitor according to claim 1, characterized in that, The threshold for the tiered risk index is set as follows: In a known environment, the gas monitor is used to perform multiple environmental parameter measurements, and the results are analyzed to obtain a set of baseline measurements for a stratified risk index. Calculate the mean and standard deviation of the benchmark measurements to determine the confidence value of the stratified risk index; The confidence values ​​of the stratified risk index are corrected using an environmental adjustment factor to obtain the threshold of the stratified risk index.

6. The wireless intelligent gas monitor according to claim 1, characterized in that, The remote security management platform determines the network transmission path and transmission cycle based on the data collection parameters and network status of the portable detection terminal in the following specific ways: When the parameter values ​​collected by the portable detection terminal are all within the preset safety threshold range and the network status is smooth, the remote safety management platform determines to use a low-priority transmission path and sets the transmission cycle to a normal cycle. When the collected parameter value exceeds the preset safety threshold but does not reach the alarm threshold, or when there is a delay in the network status, the remote safety management platform switches to a medium-priority transmission path, and the transmission cycle is shortened to half of the normal cycle. When the collected parameters are in an alarm state or the network is not working properly, the remote security management platform switches to a high-priority transmission path, prioritizes network bandwidth, and adjusts the transmission cycle to real-time transmission.

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