Intelligent safety monitoring and early warning system for workers based on multi-source data

Abstract

The present application belongs to the technical field of safety monitoring and early warning, and relates to an intelligent safety monitoring and early warning system for workers based on multi-source data. The personnel position value, wearing height value, posture state value, hydrogen sulfide concentration value and oxygen concentration value of the workers are collected by the collection module within the safety monitoring period; the actual height value of the sampling port is determined based on the personnel position value, preset low-position risk area boundary, wearing height value and posture state value by the low-position interlayer entering determination module, and the low-position interlayer entering value is determined; the gas change value after posture descent is determined based on the hydrogen sulfide concentration value and oxygen concentration value before and after the posture descent period by the gas change determination module; the low-position hydrogen sulfide interlayer risk value is determined according to the low-position interlayer entering value and the gas change value after posture descent by the interlayer risk determination module; and the low-position exposure early warning mark is generated and output by the early warning output module. The present application is used for identifying the exposure risk when the low posture enters the low-position hydrogen sulfide interlayer.

Description

Technical Field

[0001] This invention relates to the field of safety monitoring and early warning technology, and in particular to an intelligent safety monitoring and early warning system for workers based on multi-source data. Background Technology

[0002] In high-risk scenarios such as high-sulfur operations in oil and gas fields, confined space maintenance, valve well inspections, trench work, and tank bottom cleaning, existing technologies typically employ wearable gas detectors, vital sign wristbands, air respirator pressure monitoring equipment, and remote monitoring platforms to monitor hydrogen sulfide, oxygen, carbon monoxide, combustible gases, personnel location, and vital signs to ensure worker safety. Local or remote alarms are triggered when gas concentrations reach preset thresholds. The core judgment method of this type of technology is usually to use the gas concentration at the sampling port of the wearable gas detector as the gas state of the surrounding environment and compare this concentration with a fixed alarm threshold. When the concentration of hydrogen sulfide, carbon monoxide, or combustible gas exceeds the threshold, or the oxygen concentration falls below the safety lower limit, the system generates an alarm. This method can meet the general gas exceedance alarm requirements, but it usually does not further consider the impact of changes in the worker's posture and height on the actual respiratory exposure risk.

[0003] However, in low-lying areas, at the bottom of wells, trenches, tanks, and valve wells, hydrogen sulfide easily accumulates at low levels. When workers are standing, the wearable gas detector is positioned high, and the detected value may not yet meet the alarm criteria. When workers bend over, squat, or kneel, the height of their mouth and nose and the height of the detector's sampling port decrease, potentially allowing them to suddenly enter a low-level hydrogen sulfide layer. In such cases, relying solely on fixed gas thresholds for alarms can easily lead to delayed warnings.

[0004] Therefore, although existing safety monitoring and early warning systems for workers can collect multi-source data such as gas, location, vital signs, and breathing pressure, they lack analysis of the correlation between low-risk areas, changes in personnel posture and altitude, and trends in hydrogen sulfide concentration. This makes it difficult to identify the risk of exposure to low-level hydrogen sulfide interlayers in a timely manner, which can easily increase the risk of exposure to workers and affect the timeliness of on-site evacuation and remote response. Summary of the Invention

[0005] The purpose of this invention is to address the problem that existing worker safety monitoring and early warning systems mainly rely on fixed gas thresholds for alarms, failing to adequately correlate low-risk areas, changes in personnel posture and height, and gas changes after posture descent, resulting in delayed identification of low-level hydrogen sulfide interlayer exposure risks. Therefore, this invention proposes an intelligent worker safety monitoring and early warning system based on multi-source data.

[0006] To achieve the above objectives, this invention proposes an intelligent safety monitoring and early warning system for workers based on multi-source data, comprising: a data acquisition module, used to acquire the worker's location value, wearing height value, posture value, hydrogen sulfide concentration value, and oxygen concentration value during the safety monitoring period.

[0007] The low-level mezzanine entry determination module is used to match the personnel position value with the preset low-level risk area boundary to obtain the low-level area identifier; determine the posture descent value based on the wearing height value and posture state value; determine the actual height value of the sampling port based on the wearing height value and posture descent value; and determine the low-level mezzanine entry value based on the low-level area identifier and the actual height value of the sampling port.

[0008] The gas change determination module is used to determine the attitude descent period based on the attitude descent value, and to determine the gas change value after attitude descent based on the hydrogen sulfide concentration value and oxygen concentration value before and after the attitude descent period.

[0009] The interlayer risk determination module is used to determine the risk value of low-level hydrogen sulfide interlayer based on the low-level interlayer entry value and the gas change value after attitude descent.

[0010] The early warning output module is used to generate low-level exposure early warning signs based on the low-level hydrogen sulfide interlayer risk value, and output the low-level exposure early warning signs to the intelligent command terminal of the operator and the remote monitoring platform.

[0011] In summary, by employing the aforementioned intelligent safety monitoring and early warning system for workers based on multi-source data, the beneficial effects of this invention are as follows: This invention acquires personnel location values, wearing height values, and posture values ​​through a data acquisition module, and matches the personnel location values ​​with the preset low-risk area boundary through a low-level interlayer entry determination module. Simultaneously, it determines the actual height of the sampling port based on the wearing height value and posture descent value. This solves the problem in existing technologies where alarms are triggered solely based on the current concentration value of the wearable gas detector, making it difficult to determine whether the sampling port has entered the low-level hydrogen sulfide interlayer height range, thus achieving the identification of low-posture exposure states within low-risk areas.

[0012] This invention uses a gas change determination module to compare the hydrogen sulfide and oxygen concentrations before and after the descent period, based on the descent cycle, to determine the gas change value after descent. This solves the problem that ordinary ventilation disturbances, environmental fluctuations, or short-term fluctuations in detectors can easily be mistaken for interlayer risks, enabling a correlation between gas change judgments and the worker's descent process.

[0013] The present invention determines the low-position hydrogen sulfide interlayer risk value by integrating the low-position interlayer entry value and the gas change value after posture descent through the interlayer risk determination module, and outputs a low-position exposure warning identifier to the operator intelligent command terminal and the remote monitoring platform through the warning output module. The problems that the fixed threshold alarm lags in warning the exposure risk of the low-position interlayer and the remote platform lacks position and risk linkage information are solved, which facilitates the linkage between the prompt at the operator end and the disposal of the remote monitoring platform. Brief Description of the Drawings

[0014] Figure 1 shows a schematic diagram of the system of the present invention;

[0015] Figure 2 shows a schematic flow chart for determining the low-position interlayer entry value according to the present invention;

[0016] Figure 3 shows a schematic flow chart for generating the low-position exposure warning identifier according to the present invention. Detailed Description of the Embodiments

[0017] The intelligent safety monitoring and early warning system for operators based on multi-source data in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] The specific execution process of the intelligent safety monitoring and early warning system for operators based on multi-source data provided by the present invention will be specifically described below with reference to the accompanying drawings. It should be noted that the personnel position value, wearing height value, posture state value, hydrogen sulfide concentration value and oxygen concentration value in the present invention are all collected and bound according to the same safety monitoring cycle, so that the subsequent low-position interlayer entry value, gas change value after posture descent and low-position hydrogen sulfide interlayer risk value can correspond to the same operator, the same posture state and the same gas detection moment.

[0019] Embodiment 1:

[0020] Refer to Figure 1 to Figure 3 , the intelligent safety monitoring and early warning system for operators based on multi-source data includes: an acquisition module, configured to acquire the personnel position value, wearing height value, posture state value, hydrogen sulfide concentration value and oxygen concentration value of the operator within a safety monitoring cycle.

[0021] It should be noted that the method for collecting personnel location values, wearing height values, posture values, hydrogen sulfide concentration values, and oxygen concentration values ​​of operators during the safety monitoring cycle includes: obtaining the terminal location coordinates reported by the intelligent command terminal of the operator during the current safety monitoring cycle, and determining the terminal location coordinates as personnel location values.

[0022] The terminal location coordinates include horizontal and vertical coordinates. Horizontal coordinates determine the operator's position within the work area plane, while vertical coordinates determine the operator's height relative to a reference plane within the work area. This reference plane can be the bottom of a well, trench, tank, valve well, or a pre-marked surface within the work area. Vertical coordinates can be calculated from an electronic map of the work area, the height of positioning anchor points, the entrance reference height, or manually determined heights on-site. Thus, the operator's position value can be divided into horizontal and vertical values, which are then used for subsequent matching with the boundaries of a pre-defined low-risk area.

[0023] Specifically, the height position value is used to characterize the height of the worker's work surface relative to the reference plane of the work area, not the height of the sampling port of the wearable gas detector. The actual height value of the sampling port is used to characterize the height of the wearable gas detector's sampling port relative to the reference plane of the work area after the worker's posture changes. Therefore, the height position value is used to determine whether the worker is in a preset low-risk area, and the actual height value of the sampling port is used to determine whether the sampling port has entered the low-risk hydrogen sulfide interlayer height range.

[0024] The wearing height of the sampling port of the wearable gas detector is obtained when the operator is standing, and the wearing height of the sampling port is determined as the wearing height value.

[0025] The attitude recognition value output by the attitude sensor during the current safety monitoring cycle is obtained, and the attitude recognition value is determined as the attitude state value.

[0026] Specifically, the posture sensor can output corresponding posture recognition values ​​based on the worker's torso tilt angle, lower limb bending state, or posture angle output by the inertial measurement unit. When the posture recognition value indicates that the worker is in a standing, bending, squatting, or kneeling position, the posture state value is determined as a standing posture value, bending posture value, squatting posture value, or kneeling posture value, respectively.

[0027] The hydrogen sulfide and oxygen detection concentrations output by the wearable gas detector during the current safety monitoring cycle are obtained, and the hydrogen sulfide detection concentration is determined as the hydrogen sulfide concentration value, and the oxygen detection concentration is determined as the oxygen concentration value.

[0028] The hydrogen sulfide concentration value, the change in hydrogen sulfide value after attitude change, and the preset hydrogen sulfide rise threshold all use the same concentration unit; the oxygen concentration value, the decrease in oxygen value after attitude change, and the preset oxygen decrease threshold all use the same concentration unit. This ensures that subsequent concentration difference calculations and threshold comparisons have the same dimensions.

[0029] The personnel location value, the wearing height value, the posture value, the hydrogen sulfide concentration value, and the oxygen concentration value are bound according to the current safety monitoring cycle.

[0030] Furthermore, the data acquisition module performs validity checks on personnel location, wearing height, posture, hydrogen sulfide concentration, and oxygen concentration values ​​within each safety monitoring cycle. If any of these values ​​is not collected or bound within the same safety monitoring cycle, or if the collection time for any value exceeds the specified safety monitoring cycle, that safety monitoring cycle is determined to be invalid, and the next safety monitoring cycle is triggered for re-collection. Within an invalid safety monitoring cycle, the low-level hydrogen sulfide intercalation risk value is not identified as an intercalation risk exclusion value.

[0031] The wearing height value characterizes the height of the sampling port of the wearable gas detector relative to the ground when the operator is standing. The wearing height value is a non-negative value, and its unit is consistent with that of the height position value, posture descent value, actual sampling port height value, and height boundary value. The wearing height value can be entered by the operator's intelligent command terminal before entering the work area, or pre-attached according to the fixed wearing position of the wearable gas detector on the chest, shoulder, or waist. This ensures that the calculation of the actual sampling port height value has a defined height reference. The safety monitoring cycle is the time interval within which the acquisition module completes one acquisition and binding of personnel position value, wearing height value, posture value, hydrogen sulfide concentration value, and oxygen concentration value.

[0032] The low-level mezzanine entry determination module is used to match the personnel position value with the preset low-level risk area boundary to obtain the low-level area identifier; determine the posture descent value based on the wearing height value and posture state value; determine the actual height value of the sampling port based on the wearing height value and posture descent value; and determine the low-level mezzanine entry value based on the low-level area identifier and the actual height value of the sampling port.

[0033] See Figure 2The data acquisition module first obtains the personnel's location value, wearing height value, and posture status value. The low-level mezzanine entry determination module divides the personnel's location value into horizontal and vertical position values ​​and matches them with the preset low-level risk area boundary to obtain the low-level area identifier. Subsequently, the low-level mezzanine entry determination module determines the posture descent baseline value based on the posture status value, and determines the posture descent value based on the posture descent baseline value and wearing height value. Further, the posture descent value is subtracted from the wearing height value to obtain the actual height value of the sampling port. Finally, when the low-level area identifier is a low-level area hit identifier and the actual height value of the sampling port is not higher than the height boundary value, it is determined as a mezzanine entry confirmation value; otherwise, it is determined as a mezzanine entry exclusion value.

[0034] Considering that hydrogen sulfide tends to accumulate in low-lying areas, at the bottom of wells, trenches, tanks, and valve wells, the sampling port of a wearable gas detector may not reach the alarm threshold when the worker is standing due to its relatively high height. Furthermore, when the worker is bending over, squatting, or kneeling, the sampling port height decreases, potentially allowing hydrogen sulfide to enter the low-lying hydrogen sulfide layer. Therefore, it is necessary to combine the worker's spatial location with the actual sampling port height to determine whether the actual height of the wearable gas detector's sampling port falls within the range of low-lying hydrogen sulfide layers.

[0035] In one specific embodiment, firstly, personnel location values ​​are acquired and divided into horizontal and vertical location values. The preset low-risk area boundary includes horizontal and vertical boundary values; wherein the horizontal boundary value defines the range of the low-risk area within the horizontal plane, and the vertical boundary value defines the upper boundary height of the low-level hydrogen sulfide interlayer. The preset low-risk area boundary can be determined based on an electronic map of the work area, equipment installation records, work permit marking areas, historical hydrogen sulfide alarm locations, or on-site manual marking results.

[0036] Specifically, the height boundary value can be determined based on the bottom surface height of the low-risk area and the preset interlayer height. The preset interlayer height is a non-negative height value, and its unit is consistent with the height boundary value and the actual height value of the sampling port. The preset interlayer height is used to characterize the height range at which low-level hydrogen sulfide tends to accumulate, and it can be determined based on the sampling port height corresponding to historical hydrogen sulfide alarms, on-site manual calibration height, or operational safety management rules. As an example, when the bottom surface of a valve well is determined as the reference surface of the operational area, the height boundary value can be obtained by adding the preset interlayer height to the bottom surface height of the valve well. Thus, there is a clear comparison benchmark for whether the actual height value of the sampling port is not higher than the height boundary value.

[0037] Specifically, when the horizontal position value is within the horizontal boundary value and the height position value is not higher than the height boundary value, the low-position area identifier is determined as the low-position area hit identifier; when the horizontal position value is not within the horizontal boundary value, or the height position value is higher than the height boundary value, the low-position area identifier is determined as the low-position area miss identifier.

[0038] Subsequently, the posture descent value is determined based on the wearing height value and posture state value. The wearing height value is used to characterize the height of the sampling port of the wearable gas detector relative to the ground when the operator is standing. The posture state value includes standing posture value, bending posture value, squatting posture value, and kneeling posture value.

[0039] Specifically, when the posture state is standing, the baseline value for posture descent is set to zero; when the posture state is bending, the baseline value for posture descent is set as the first baseline value; when the posture state is squatting, the baseline value for posture descent is set as the second baseline value; and when the posture state is kneeling, the baseline value for posture descent is set as the third baseline value. The first baseline value is less than the second baseline value, and the second baseline value is less than the third baseline value. The first, second, and third baseline values ​​can be determined based on the person's height, the wearing position of the wearable gas detector, or on-site calibration results.

[0040] As a specific example, before the operator enters the work area, the height of the sampling port of the wearable gas detector relative to the reference plane of the work area can be recorded in standing, bending, squatting and kneeling positions. The difference between the sampling port height in the standing position and the sampling port height in the bending position is determined as the first reference value, the difference between the sampling port height in the standing position and the sampling port height in the squatting position is determined as the second reference value, and the difference between the sampling port height in the standing position and the sampling port height in the kneeling position is determined as the third reference value.

[0041] Furthermore, the attitude descent reference value is compared with the wearing height value; when the attitude descent reference value is less than the wearing height value, the attitude descent value is determined as the attitude descent reference value; when the attitude descent reference value is not less than the wearing height value, the attitude descent value is determined as the wearing height value.

[0042] Subsequently, the height difference is obtained by subtracting the posture descent value from the wearing height value. When the height difference is positive, the actual height of the sampling port is determined as the height difference; when the height difference is not positive, the actual height of the sampling port is determined as zero. Thus, the actual height of the sampling port can characterize the actual height of the wearing gas detector's sampling port relative to the ground after the operator's posture changes.

[0043] Finally, the entry value for the low-level interlayer is determined based on the low-level area marker and the actual height of the sampling port. The low-level interlayer entry value includes a confirmation entry value and an exclusion entry value. When the low-level area marker is a low-level area hit marker and the actual height of the sampling port is not higher than the height boundary value, the low-level interlayer entry value is determined as a confirmation entry value; when the low-level area marker is a low-level area miss marker, or the actual height of the sampling port is higher than the height boundary value, the low-level interlayer entry value is determined as an exclusion entry value. This allows for the distinction between situations where workers are only passing above the low-level risk area and situations where the wearable gas detector sampling port actually enters the low-level hydrogen sulfide interlayer height range.

[0044] The gas change determination module is used to determine the attitude descent period based on the attitude descent value, and to determine the gas change value after attitude descent based on the hydrogen sulfide concentration value and oxygen concentration value before and after the attitude descent period.

[0045] The gas change determination module first determines whether the attitude descent value is not less than the preset attitude descent threshold for the first time, and determines the safe monitoring period that meets the condition as the attitude descent period. Then, it acquires the hydrogen sulfide concentration value and oxygen concentration value of the attitude descent period and the previous safe monitoring period, and calculates the hydrogen sulfide change value and the oxygen decrease value after attitude descent. Further, when the hydrogen sulfide change value after attitude descent is not less than the preset hydrogen sulfide rise threshold and the oxygen decrease value after attitude descent is not less than the preset oxygen decrease threshold, it is determined as the value of interlayer formation after attitude descent. Finally, the interlayer risk determination module determines the low-level hydrogen sulfide interlayer risk value based on the low-level interlayer entry value and the gas change value after attitude descent, and the early warning output module generates a low-level exposure early warning sign.

[0046] Considering that changes in common gas trends can be caused by ventilation disturbances, environmental fluctuations, or short-term fluctuations in detectors, it cannot directly indicate that workers have entered a low-level hydrogen sulfide interlayer. Therefore, it is necessary to use the safety monitoring period during which the worker's posture significantly decreases as a time benchmark, and compare the changes in hydrogen sulfide and oxygen concentrations before and after the posture decrease to determine whether there is a correlation between gas changes and the decrease in the height of the sampling port.

[0047] In one specific embodiment, the safety monitoring cycle is the time interval during which the data acquisition module completes the acquisition and binding of personnel location value, wearing height value, posture status value, hydrogen sulfide concentration value and oxygen concentration value.

[0048] Specifically, the safety monitoring period in which the attitude descent value first does not fall below a preset attitude descent threshold is defined as the m-th safety monitoring period, and the m-th safety monitoring period is defined as the attitude descent period; where m is a positive integer greater than 1. The preset attitude descent threshold can be determined based on the attitude descent difference between the standing posture value and the bending posture value, and is used to identify attitude changes where the sampling port height has substantially decreased; in one specific embodiment, the preset attitude descent threshold is a positive height difference and is not greater than a first reference value; when the attitude descent value first does not fall below the preset attitude descent threshold, it indicates that the sampling port height has substantially decreased from a standing state to a low posture state; when the attitude descent value is not less than the preset attitude descent threshold in the first safety monitoring period after system startup, this safety monitoring period is defined as the attitude observation period, and the hydrogen sulfide concentration value and oxygen concentration value of the next safety monitoring period are collected; after obtaining the hydrogen sulfide concentration value and oxygen concentration value corresponding to the attitude observation period and the next safety monitoring period, the gas change value after attitude descent is determined. Thus, it is possible to avoid directly calculating the hydrogen sulfide change value and oxygen descent value after attitude descent when there is no previous safety monitoring period.

[0049] Subsequently, the hydrogen sulfide concentration and oxygen concentration values ​​for the m-th safety monitoring cycle are obtained, and the hydrogen sulfide concentration and oxygen concentration values ​​for the (m-1)-th safety monitoring cycle are also obtained.

[0050] Furthermore, the hydrogen sulfide concentration value of the m-th safety monitoring cycle is subtracted from the hydrogen sulfide concentration value of the m-1-th safety monitoring cycle to obtain the hydrogen sulfide change value after attitude control; the oxygen concentration value of the m-1-th safety monitoring cycle is subtracted from the oxygen concentration value of the m-th safety monitoring cycle to obtain the oxygen decrease value after attitude control.

[0051] Finally, the gas change value after attitude descent is determined based on the changes in hydrogen sulfide and oxygen levels after attitude descent. The gas change value after attitude descent includes the value of interlayer formation and the value of no interlayer formation. When the change in hydrogen sulfide after attitude descent is not less than a preset hydrogen sulfide rise threshold, and the decrease in oxygen after attitude descent is not less than a preset oxygen decrease threshold, the gas change value after attitude descent is determined as the value of interlayer formation; when the change in hydrogen sulfide after attitude descent is less than the preset hydrogen sulfide rise threshold, or the decrease in oxygen after attitude descent is less than the preset oxygen decrease threshold, the gas change value after attitude descent is determined as the value of no interlayer formation.

[0052] The preset hydrogen sulfide rise threshold can be determined based on the hydrogen sulfide concentration fluctuation value of the wearable gas detector in a stable environment; the preset oxygen fall threshold can be determined based on the oxygen concentration fluctuation value of the wearable gas detector in a stable environment. This allows for the differentiation between gas fluctuations in normal environments and gas changes caused by the sampling port entering the lower interlayer after the device descends. The preset safety margin can be determined based on the allowable measurement error of the wearable gas detector, the maximum fluctuation range of concentration changes in a stable environment, or on-site safety management requirements, and is used to reduce the probability of misjudgment caused by normal fluctuations in the detector. The preset safety margin is a non-negative value and uses the same unit as the corresponding concentration fluctuation value. When used to determine the preset hydrogen sulfide rise threshold, the preset safety margin uses hydrogen sulfide concentration units; when used to determine the preset oxygen fall threshold, the preset safety margin uses oxygen concentration units.

[0053] In one specific embodiment, hydrogen sulfide and oxygen concentration values ​​can be continuously collected over multiple safety monitoring cycles before personnel enter a low-risk area. The maximum change in hydrogen sulfide concentration between adjacent monitoring cycles is taken as the hydrogen sulfide concentration fluctuation value under stable conditions, and the maximum change in oxygen concentration between adjacent monitoring cycles is taken as the oxygen concentration fluctuation value under stable conditions. Subsequently, a preset safety margin is added to the hydrogen sulfide concentration fluctuation value to determine a preset hydrogen sulfide rise threshold; the preset safety margin is added to the oxygen concentration fluctuation value to determine a preset oxygen fall threshold. This reduces misjudgments caused by normal fluctuations in the detectors.

[0054] The interlayer risk determination module is used to determine the risk value of low-level hydrogen sulfide interlayer based on the low-level interlayer entry value and the gas change value after attitude descent.

[0055] It should be noted that the method for determining the risk value of low-level hydrogen sulfide interlayer based on the low-level interlayer entry value and the gas change value after attitude descent includes: the low-level interlayer entry value includes the interlayer entry confirmation value and the interlayer entry exclusion value; the gas change value after attitude descent includes the interlayer formation value after attitude descent and the interlayer non-formation value after attitude descent; and the low-level hydrogen sulfide interlayer risk value includes the interlayer risk confirmation value, the interlayer risk concern value, and the interlayer risk exclusion value.

[0056] Considering that simply identifying a worker as being in a low-risk area does not directly indicate a hydrogen sulfide exposure risk, it is necessary to further determine whether gas changes corresponding to the low-risk hydrogen sulfide layer appear at the sampling port of the wearable gas detector after the worker's posture descends. Therefore, the layer risk determination module uses both the low-risk layer entry value and the gas change value after posture descent to assess the risk.

[0057] In one specific embodiment, when the low-level interlayer entry value is the interlayer entry confirmation value and the gas change value after attitude descent is the interlayer formation value after attitude descent, it indicates that the sampling port of the wearable gas detector has entered the low-level interlayer height range, and after attitude descent, there is an increase in hydrogen sulfide concentration and a decrease in oxygen concentration. The low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk confirmation value.

[0058] Subsequently, when the low-level interlayer entry value is the interlayer entry confirmation value, and the gas change value after attitude descent is the value after attitude descent without interlayer formation, it indicates that the sampling port of the wearable gas detector has entered the low-level interlayer height range, but the gas change after attitude descent has not yet reached the interlayer formation condition. The low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk concern value.

[0059] Finally, when the low-level interlayer entry value is the interlayer entry exclusion value, it indicates that the sampling port of the wearable gas detector has not entered the low-level interlayer height range, and the low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk exclusion value. Thus, it is possible to distinguish between three situations: the sampling port enters the low-level interlayer and the gas undergoes abnormal changes; the sampling port enters the low-level interlayer but the gas changes are not yet obvious; and the sampling port does not enter the low-level interlayer.

[0060] See Figure 3 The early warning output module is used to generate low-level exposure early warning signs based on the low-level hydrogen sulfide interlayer risk value, and output the low-level exposure early warning signs to the intelligent command terminal of the operator and the remote monitoring platform.

[0061] It should be noted that the method for generating low-level exposure warning signs based on the low-level hydrogen sulfide interlayer risk value includes: low-level exposure warning signs include interlayer confirmation warning signs, interlayer attention warning signs, and interlayer exclusion signs.

[0062] When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk confirmation value, the low-level exposure warning sign will be determined as the interlayer confirmation warning sign.

[0063] When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk concern value, the low-level exposure warning sign will be identified as the interlayer concern warning sign.

[0064] When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk exclusion value, the low-level exposure warning sign will be determined as the interlayer exclusion sign.

[0065] Low-level exposure warning signs are output to the intelligent command terminal and remote monitoring platform of the operators.

[0066] It should be noted that the method for outputting low-level exposure warning signs to the intelligent command terminal and remote monitoring platform of the operators includes: determining the terminal prompt value based on the low-level exposure warning sign; in one specific embodiment, the terminal prompt value includes a prompt level value and a prompt content value. When the low-level exposure warning sign is a subsidence confirmation warning sign, the prompt level value is determined to be an evacuation prompt level, and the prompt content value is used to prompt the operators to stop low-posture work and leave the current low-level risk area; when the low-level exposure warning sign is a subsidence attention warning sign, the prompt level value is determined to be an attention prompt level, and the prompt content value is used to prompt the operators to raise their posture, shorten their stay time, or wait for on-site confirmation; when the low-level exposure warning sign is a subsidence exclusion sign, the prompt level value is determined to be a no-subsidence prompt level. Thus, the terminal prompt value can correspond to different low-level hydrogen sulfide subsidence risk values ​​and can be used by the intelligent command terminal of the operators to output sound prompts, vibration prompts, or text prompts.

[0067] The platform's prompt value is determined based on the terminal prompt value, personnel location value, low-level hydrogen sulfide interlayer risk value, and the current safety monitoring cycle.

[0068] The platform-based prompt value is used to display the location of the workers and the corresponding low-level hydrogen sulfide interlayer risk value on the remote monitoring platform, and to determine the priority of remote handling. The terminal prompt value is used to enable the intelligent command terminal of the workers to output local prompts to the corresponding workers. In this way, the workers can receive direct prompts, and the remote monitoring platform can obtain the personnel location value and the low-level hydrogen sulfide interlayer risk value.

[0069] Furthermore, the platform's alert values ​​include personnel location, low-level hydrogen sulfide interlayer risk value, low-level exposure warning indicator, and current safety monitoring cycle. When the low-level hydrogen sulfide interlayer risk value is a confirmed risk value, the remote monitoring platform identifies the corresponding personnel as priority targets for handling; when the low-level hydrogen sulfide interlayer risk value is a risk concern value, the remote monitoring platform identifies the corresponding personnel as targets for continuous observation. Therefore, the platform's alert values ​​are not only used to display alarm results but also to enable the remote monitoring platform to prioritize on-site handling based on personnel location and risk level.

[0070] The terminal prompt value is output to the operator's intelligent command terminal, and the platform prompt value is output to the remote monitoring platform.

[0071] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the intelligent safety monitoring and early warning system for workers based on multi-source data and its inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A worker intelligent safety monitoring and early warning system based on multi-source data, characterized in that, include: The data acquisition module is used to collect data on the personnel location, wearing height, posture, hydrogen sulfide concentration, and oxygen concentration of workers during the safety monitoring cycle. The low-level interlayer entry determination module is used to match the personnel position value with the preset low-level risk area boundary to obtain the low-level area identifier; determine the posture descent value based on the wearing height value and posture status value; and determine the actual height value of the sampling port based on the wearing height value and posture descent value. The entry value for the low-level mezzanine is determined based on the low-level area markers and the actual height of the sampling port. The gas change determination module is used to determine the attitude descent period based on the attitude descent value, and to determine the gas change value after attitude descent based on the hydrogen sulfide concentration value and oxygen concentration value before and after the attitude descent period. The interlayer risk determination module is used to determine the risk value of low-level hydrogen sulfide interlayer based on the low-level interlayer entry value and the gas change value after attitude descent. The early warning output module is used to generate low-level exposure early warning signs based on the low-level hydrogen sulfide interlayer risk value, and output the low-level exposure early warning signs to the intelligent command terminal of the operator and the remote monitoring platform.

2. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 1, characterized in that, Methods for determining the risk value of low-level hydrogen sulfide interlayers include: Low-level interlayer entry values ​​include interlayer entry confirmation values ​​and interlayer entry exclusion values; gas change values ​​after attitude descent include interlayer formation values ​​and interlayer non-formation values. When the low-level interlayer entry value is the interlayer entry confirmation value and the gas change value after attitude descent is the interlayer formation value after attitude descent, the low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk confirmation value. When the low-level interlayer entry value is the interlayer entry confirmation value and the gas change value after attitude descent is the value of no interlayer formation after attitude descent, the low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk concern value. When the low-level interlayer entry value is the interlayer entry exclusion value, the low-level hydrogen sulfide interlayer risk value is determined as the interlayer risk exclusion value.

3. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 1, characterized in that, The acquisition module is specifically used for: Obtain the terminal location coordinates reported by the intelligent command terminal of the operator and determine them as the personnel location value; Obtain the wearing height of the sampling port of the wearable gas detector when the operator is standing, and determine it as the wearing height value; Acquire the attitude recognition value output by the attitude sensor and determine it as the attitude state value; The hydrogen sulfide and oxygen concentrations output by the wearable gas detector are obtained and determined as hydrogen sulfide concentration values ​​and oxygen concentration values, respectively. The personnel location value, the wearing height value, the posture value, the hydrogen sulfide concentration value, and the oxygen concentration value are bound according to the current safety monitoring cycle.

4. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 1, characterized in that, Methods for matching personnel location values ​​with preset low-risk area boundaries include: Personnel location values ​​are divided into horizontal location values ​​and vertical location values, and the boundaries of the preset low-risk area are divided into horizontal boundary values ​​and vertical boundary values; When the horizontal position value is within the horizontal boundary value and the height position value is not higher than the height boundary value, the low-position area identifier is determined as the low-position area hit identifier. When the horizontal position value is not within the horizontal boundary value, or the height position value is higher than the height boundary value, the low-position area identifier is identified as a low-position area miss identifier.

5. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 1, characterized in that, Methods for determining the attitude descent value and the actual height value of the sampling port include: The posture values ​​are divided into standing posture values, bending posture values, squatting posture values, and kneeling posture values; When the posture state value is standing, the posture descent reference value is set to zero; when the posture state value is bending, the posture descent reference value is set to the first reference value; when the posture state value is squatting, the posture descent reference value is set to the second reference value; when the posture state value is kneeling, the posture descent reference value is set to the third reference value, and the first, second, and third reference values ​​increase sequentially. The smaller value between the attitude descent baseline value and the wearing height value is determined as the attitude descent value; The height difference is obtained by subtracting the attitude descent value from the wearing height value. When the height difference is positive, the actual height value of the sampling port is determined as the height difference; otherwise, it is determined as zero.

6. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 4, characterized in that, Methods for determining the entry value of the lower mezzanine include: Low-level mezzanine entry values ​​include mezzanine entry confirmation values ​​and mezzanine entry exclusion values; When the low-level region is identified as the low-level region hit identifier and the actual height value of the sampling port is not higher than the height boundary value, the low-level interlayer entry value is determined as the interlayer entry confirmation value. When the low-level area is identified as a low-level area miss, or when the actual height of the sampling port is higher than the height boundary value, the low-level interlayer entry value is determined as the interlayer entry exclusion value.

7. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 1, characterized in that, Methods for determining gas changes after attitude descent include: The safety monitoring period in which the attitude descent value is first not less than the preset attitude descent threshold is defined as the m-th safety monitoring period and attitude descent period, where m is a positive integer greater than 1; Obtain the hydrogen sulfide concentration and oxygen concentration values ​​for the m-th and m-1-th safety monitoring cycles; Subtract the hydrogen sulfide concentration value of the (m-1)th safety monitoring cycle from the hydrogen sulfide concentration value of the m-th safety monitoring cycle to obtain the hydrogen sulfide change value after attitude. Subtract the oxygen concentration value of the m-th safety monitoring cycle from the oxygen concentration value of the m-1th safety monitoring cycle to obtain the oxygen decrease value after attitude control. When the change in hydrogen sulfide after attitude change is not less than the preset hydrogen sulfide rise threshold and the decrease in oxygen after attitude change is not less than the preset oxygen decrease threshold, it is determined as the value of interlayer formation after attitude change; otherwise, it is determined as the value of no interlayer formation after attitude change.

8. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 7, characterized in that, The safety monitoring cycle is the time interval within which the data acquisition module completes the acquisition and binding of personnel location, wearing height, posture, hydrogen sulfide concentration, and oxygen concentration values.

9. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 2, characterized in that, Methods for generating low-level exposure warning indicators include: When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk confirmation value, the low-level exposure warning sign will be determined as the interlayer confirmation warning sign. When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk concern value, the low-level exposure warning sign will be identified as the interlayer concern warning sign. When the risk value of low-level hydrogen sulfide interlayer is the interlayer risk exclusion value, the low-level exposure warning sign will be determined as the interlayer exclusion sign.

10. The intelligent safety monitoring and early warning system for workers based on multi-source data according to claim 9, characterized in that, Methods for outputting low-level exposure warning indicators include: The terminal prompt value is determined based on the low-level exposure warning sign, whereby the terminal prompt value includes a prompt level value and a prompt content value; The platform prompt value is determined based on the terminal prompt value, personnel location value, low-level hydrogen sulfide interlayer risk value, and the current safety monitoring cycle. The terminal prompt value is output to the operator's intelligent command terminal, and the platform prompt value is output to the remote monitoring platform.

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