Multifunctional detection system and method suitable for limited space operations

Abstract

The application discloses a multifunctional detection system and method suitable for limited space operation, which comprises a plurality of gas detectors, a multifunctional detector and a receiving module; wherein the plurality of gas detectors are arranged at different elevations in a limited space operation site, used for detecting data of a plurality of gases at different elevations and transmitting the data to the receiving module through wireless communication technology; the multifunctional detector is worn by a worker inside the limited space operation site, used for detecting data of a plurality of gases in the operation environment and body state data of the worker, and automatically transmitting the detected data to the receiving module through wireless communication technology; and the receiving module is used for displaying data transmitted by the plurality of gas detectors and the multifunctional detector in real time to remote monitoring personnel. The system improves the accuracy, timeliness, comprehensiveness and reliability of the detection of the operation environment and the state of the worker in the limited space.

Description

Technical Field

[0001] This application relates to the field of confined space safety operation technology, and in particular to a multifunctional detection system and method suitable for confined space operations. Background Technology

[0002] A confined space refers to a closed or partially enclosed space with narrow and limited entrances and exits, not designed as a fixed workplace, and with poor natural ventilation, which can easily lead to the accumulation of toxic, harmful, flammable, and explosive substances or insufficient oxygen content. Confined space workplaces generally contain toxic and harmful gases. If the levels of toxic and harmful gases exceed the standards during operations, it can easily cause various safety accidents. Therefore, it is necessary to monitor the working environment and the condition of personnel within confined spaces.

[0003] In related technologies, monitoring in confined space operations generally relies on workers reporting parameters of the working environment and their own status collected by monitoring equipment in real time. However, these monitoring methods mainly depend on the workers' personal experience and self-discipline, lacking autonomy and controllability. Monitoring results may be biased, and workers often rush to meet deadlines, taking chances and knowingly engaging in risky operations despite knowing the working environment does not meet requirements, leading to the failure of safety control by monitoring personnel.

[0004] Therefore, how to accurately monitor the working environment and the physical and mental condition of workers in a confined space has become an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this application is to at least partially solve one of the aforementioned technical problems.

[0006] Therefore, the first objective of this application is to propose a multifunctional detection system suitable for confined space operations. This device can monitor the levels of toxic and harmful gases, combustible gases, oxygen levels, and the health status of workers within the confined space. Through wireless transmission, monitoring personnel can monitor the on-site working environment and the status of workers in real time. Upon detecting adverse conditions, it can promptly organize the evacuation of personnel from the work site, preventing safety accidents caused by workers concealing or falsifying information.

[0007] The second objective of this application is to propose a multifunctional detection method suitable for operations in confined spaces.

[0008] The third objective of this application is to provide a non-transitory computer-readable storage medium.

[0009] To achieve the above objectives, a first aspect of this application proposes a multifunctional detection system suitable for confined space operations, comprising: multiple gas detectors, a multifunctional detector, and a receiving module; wherein,

[0010] The multiple gas detectors are arranged at different elevations within the confined space work area. The multiple gas detectors are used to detect data of various gases at different elevations within the confined space work area and transmit the detected gas data to the receiving module via wireless communication technology. The multi-functional detector is worn by the staff inside the confined space work area. The multi-functional detector is used to detect data of various gases in the work environment and the staff's physical condition data, and automatically transmits the detected gas data and the physical condition data to the receiving module through wireless communication technology. The receiving module is used to display the real-time data transmitted by the multiple gas detectors and the multi-functional detector to the remote monitoring personnel, so that the monitoring personnel can know the on-site working environment and the physical condition of the workers.

[0011] In addition, the multifunctional detection system for confined space operations according to the embodiments of this application also has the following additional technical features: Optionally, in some embodiments, the gas detector includes: a first gas collection module for collecting various gases at a corresponding elevation within the confined space work area; a gas detection module for detecting the content of the various gases collected by the first gas collection module; a first control module for debugging the gas detector, displaying the data detected by the gas detection module, and issuing alarms in various ways when an anomaly is detected; and a first communication module for transmitting the data detected by the gas detection module to the receiving module via wireless communication technology.

[0012] Optionally, in some embodiments, the multifunctional detector includes: a second gas collection module for collecting various gases around the worker; a gas and worker body status detection module, including a gas detection unit and a body status detection unit, wherein the gas and worker body status detection module is a watchband type, the body status detection unit is disposed below the gas detection unit, the gas detection unit is used to detect the content of various gases collected by the second gas collection module, and the body status detection unit is used to detect various body status data of the worker; a second control module for debugging the multifunctional detector, displaying the data detected by the gas and worker body status detection module, and issuing alarms in various ways when abnormalities are detected; and a second communication module for transmitting the data detected by the gas and worker body status detection module to the receiving module via wireless communication technology.

[0013] Optionally, in some embodiments, the gas detection unit includes: an H2S detection module, a CO detection module, a CH4 detection module, and an O2 detection module; the body condition detection unit is positioned to correspond to the wearer's pulse point, and the body condition detection unit includes: a blood pressure detection module and a heart rate detection module.

[0014] Optionally, in some embodiments, the second control module includes: a display screen, a buzzer, a warning light, and a keyboard.

[0015] To achieve the above objectives, a second aspect of the present invention provides a multifunctional detection method suitable for confined space operations, applied to the multifunctional detection system for confined space operations described in the first aspect. The method includes: Pre-operation inspection of confined space work sites is carried out using multiple gas detectors, wherein the multiple gas detectors are arranged at different elevations within the confined space work site, and the pre-operation inspection is used to check whether the environment of the confined space work site is normal. In the case of passing the pre-operation inspection, in-operation inspection is carried out based on the multi-functional detector worn by the worker, wherein the in-operation inspection is used to detect whether the working environment and the worker's physical condition are normal; If the work fails the inspection, emergency measures should be taken until the work environment and the physical condition of the workers are normal, and then the work inspection should be carried out again.

[0016] In addition, the multifunctional detection method for confined space operations according to the embodiments of this application also has the following additional technical features: Optionally, in some embodiments, the pre-operation inspection of the confined space work area based on the plurality of gas detectors includes: ventilating the confined space work area; checking whether the plurality of gas detectors are working properly, and replacing any malfunctioning gas detectors; arranging the plurality of gas detectors at the bottom, middle, and top of the confined space work area, and using the plurality of gas detectors to detect data of various gases at different elevations, and wirelessly transmitting the data of various gases to a remote receiving module; the receiving module determining whether the data of various gases meets the operating standards, and re-ventilating if the operating standards are not met.

[0017] Optionally, in some embodiments, the on-site detection based on the multi-functional detector worn by the worker includes: detecting whether the multi-functional detector is working properly, and replacing any malfunctioning multi-functional detectors; wearing the multi-functional detector on the worker's body, detecting data of various gases in the work environment and the worker's physical condition data through the multi-functional detector, and wirelessly transmitting the data of various gases and the physical condition data to a remote receiving module; and the receiving module determining whether the data of various gases and the physical condition data meet the corresponding work standards.

[0018] Optionally, in some embodiments, the step of determining whether the data of the multiple gases and the body state data meet the corresponding operating standards in the receiving module includes: comparing the data detected by the multiple gas detectors displayed by the receiving module with the data displayed by the multi-functional detector, and determining whether the staff member has misreported the detection data.

[0019] To achieve the above objectives, a third aspect of the present invention provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a multifunctional detection method suitable for confined space operations as described in any of the second aspect embodiments above.

[0020] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects: This application's multifunctional detection device enables monitoring personnel to monitor environmental data such as the content of toxic and harmful gases, combustible gases, and oxygen at the location of workers, as well as various health status data of workers. It converts worker reports into real-time monitoring data that monitoring personnel can view on a handheld terminal via wireless transmission, providing accurate data for monitoring personnel to control on-site operations. Furthermore, this application deploys gas detectors at different elevations, and through combined devices, can monitor environmental data at different elevations within a confined space, achieving a wider detection range and providing more comprehensive and richer support data for monitoring personnel's decision-making. Moreover, this application incorporates a health status detection device into the gas detectors, avoiding the traditional single-method judgment of confined space operations based solely on gas content. This enriches the means for monitoring personnel to determine whether on-site operations can continue safely. Simultaneously, the wireless transmission device allows monitoring personnel to monitor the on-site situation in real time, significantly improving emergency response capabilities and greatly enhancing on-site operational safety. Therefore, this application improves the accuracy, timeliness, comprehensiveness, and reliability of monitoring the working environment and worker status in confined spaces.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a multifunctional detection system suitable for confined space operations proposed in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the working process of a gas detector according to an embodiment of this application; Figure 3 This is a schematic diagram illustrating the working process of a multifunctional detector proposed in an embodiment of this application; Figure 4 A flowchart illustrating a multifunctional detection method suitable for confined space operations proposed in this application embodiment; Figure 5 This is a schematic diagram of a pre-operation inspection process proposed in an embodiment of this application; Figure 6 This is a schematic diagram of a gas detector arrangement according to an embodiment of this application; Figure 7 This is a schematic diagram of a detection process in an operation according to an embodiment of this application. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0024] It should be noted that confined spaces are generally divided into three categories: the first category is enclosed equipment, such as ship cabins, pressure vessels, and boilers; the second category is underground confined spaces, such as basements, culverts, tunnels, abandoned wells, sewage tanks (wells), and biogas digesters; and the third category is above-ground confined spaces, such as distiller's grain pits, garbage stations, and granaries. Confined space work environments typically contain gases such as hydrogen sulfide, carbon monoxide, carbon dioxide, ammonia, methane (biogas), and hydrogen cyanide, with hydrogen sulfide and carbon monoxide being particularly suffocating. If the levels of toxic and harmful gases exceed safe limits during work, it can easily cause poisoning and asphyxiation among workers. In work environments containing flammable gases, it can easily lead to explosions, resulting in mass casualties. Poor ventilation can also cause a decrease in the oxygen content of the air. When the oxygen content drops below 16%, symptoms of hypoxia can occur; when the oxygen content drops below 10%, varying degrees of impaired consciousness may occur.

[0025] In relevant embodiments, monitoring of the working environment in confined spaces mostly relies on pre-work ventilation, with entry only permitted after a satisfactory ventilation test. During the work process, workers largely rely on walkie-talkies or other communication devices to measure the content of toxic and harmful gases, combustible gases, and oxygen levels using handheld gas detectors, and promptly report these measurements to the safety supervisor outside the confined space. Simultaneously, pre-work alcohol and blood pressure checks are used to assess the workers' physical condition. However, the work relies heavily on the workers' own perception of their own condition, lacking specialized testing equipment.

[0026] The detection schemes in the aforementioned embodiments have the following problems: First, monitoring personnel rely solely on data reported by the workers themselves to assess the safety of on-site operations. This results in a single data source, lack of comparative verification, and reliance on worker self-awareness, hindering the monitoring personnel's judgment. Second, different gases have varying densities and distributions within a confined space. Existing equipment can only monitor the working environment in the immediate vicinity of the work area, lacking methods for detecting gas content in other areas. For example, when working at the bottom, only the bottom gas can be monitored, lacking effective means for monitoring the middle and upper layers. Third, monitoring of workers' physical condition largely relies on pre-work measurements such as blood pressure, allowing workers to perceive their own physical state during operations, but lacks effective monitoring methods during operations. Fourth, the monitoring of worker condition and the working environment is independent, lacking comprehensive comparative analysis methods.

[0027] Therefore, this application proposes a multifunctional detection system and method suitable for confined space operations. It can monitor the content of toxic and harmful gases, combustible gases, oxygen content and the physical health status of workers in confined spaces. Through a wireless transmission device, the monitoring personnel can keep abreast of the on-site working environment and the status of workers in real time. When an adverse situation is found, the personnel can be evacuated from the work site in a timely manner, thus avoiding safety accidents caused by workers concealing or falsely reporting information.

[0028] The following description, with reference to the accompanying drawings, describes a multifunctional detection system and method suitable for confined space operations, according to embodiments of this application.

[0029] Figure 1 This is a schematic diagram of the structure of a multifunctional detection system suitable for confined space operations proposed in an embodiment of this application, as shown below. Figure 1 As shown, the system includes: multiple gas detectors 1, a multi-functional detector 2, and a receiving module 3.

[0030] Among them, multiple gas detectors 1 are arranged at different elevations in the confined space work site. The multiple gas detectors 1 are used to detect the data of various gases at different elevations in the confined space work site, and transmit the detected gas data to the receiving module 3 through wireless communication technology.

[0031] The multi-functional detector 2 is worn by workers inside confined spaces. It is used to detect data on various gases in the work environment and the physical condition data of the workers, and automatically transmits the detected gas data and physical condition data to the receiving module 3 via wireless communication technology.

[0032] The receiving module 3 is used to display the real-time data transmitted by multiple gas detectors and multi-functional detectors to remote monitoring personnel, so that the monitoring personnel can know the on-site working environment and the physical condition of the workers.

[0033] In one embodiment of this application, a gas detector includes: a first gas collection module for collecting various gases at corresponding elevations within a confined space work area; a gas detection module for detecting the content of the various gases collected by the first gas collection module; a first control module for debugging the gas detector, displaying the data detected by the gas detection module, and issuing alarms in various ways when an abnormality is detected; and a first communication module for transmitting the data detected by the gas detection module to a receiving module via wireless communication technology.

[0034] Specifically, the gas detector of this application embodiment can be used to determine the working environment before operation, and mainly consists of a gas collection module, a gas detection module, a control module, a communication module, and a receiving module. For example... Figure 2 As shown, the gas detection module consists of H2S, CO, CH4, and O2 detection modules, primarily used to detect the content of flammable and explosive gases, toxic and harmful gases, and oxygen in the working environment. The control module mainly consists of a display screen, buzzer, warning lights, and keyboard, primarily used for debugging the gas detector, monitoring alarms, and viewing the measured values ​​of various gases. The detected data can also be transmitted wirelessly to remote monitoring center equipment and handheld terminals of monitoring personnel, allowing them to monitor the on-site working environment in real time.

[0035] As an example, the gas collection module of each gas detector adopts a porous and breathable structure, which can efficiently collect air samples from the location. After the air sample enters the gas detection module, the hydrogen sulfide detection unit, carbon monoxide detection unit, methane detection unit and oxygen detection unit respectively detect the corresponding gas in the sample. The detection accuracy can reach 0.1 ppm, which can accurately identify subtle changes in gas content.

[0036] The first control module features a high-definition LCD screen that clearly displays the concentration data of various gases. When the gas concentration exceeds the preset safety threshold, a buzzer will sound a continuous alarm, and a warning light will flash to alert nearby personnel to take precautions. The keypad can be used to set the gas detector's detection parameters and adjust alarm thresholds.

[0037] The first communication module adopts the LoRa wireless transmission protocol, which can transmit up to 500 meters in a limited space. It can stably transmit detection data to the monitoring handheld terminal and avoid data loss caused by signal interruption.

[0038] In one embodiment of this application, a multifunctional detector includes: a second gas collection module for collecting various gases around the worker; a gas and worker body status detection module, including a gas detection unit and a body status detection unit, wherein the gas and worker body status detection module is a watchband type, and the body status detection unit is disposed below the gas detection unit, the gas detection unit is used to detect the content of various gases collected by the second gas collection module, and the body status detection unit is used to detect various body status data of the worker; a second control module for debugging the multifunctional detector, displaying the data detected by the gas and worker body status detection module, and alarming in various ways when an abnormality is detected; and a second communication module for transmitting the data detected by the gas and worker body status detection module to the receiving module via wireless communication technology.

[0039] Among them, such as Figure 3 As shown, the gas detection unit in this embodiment includes: an H2S detection module, a CO detection module, a CH4 detection module, and an O2 detection module; the second control module includes: a display screen, a buzzer, a warning light, and a keyboard. Furthermore, the body condition detection unit is positioned corresponding to the wearer's pulse point, and includes: a blood pressure detection module and a heart rate detection module.

[0040] Specifically, the multi-functional detector mainly consists of a gas collection module, a gas and personnel health status detection module, a control module, a communication module, and a receiving module. The gas and personnel health status detection module comprises gas detection modules for H2S, CO, CH4, and O2, as well as health status detection modules for blood pressure and heart rate. It is primarily used to detect the content of flammable and explosive gases, toxic and harmful gases, and oxygen in the working environment, and to monitor the health status of workers. The control module mainly consists of a display screen, buzzer, warning lights, and keyboard. It is primarily used for debugging the gas detector, monitoring alarms, and viewing gas content measurements, heart rate values, blood pressure values, etc. The detected data can also be transmitted wirelessly to a handheld terminal of the monitoring personnel above, allowing them to monitor the on-site working environment and the health status of the workers in real time.

[0041] As an example, the multi-functional detector's strap is made of waterproof and breathable silicone, which can withstand the humid environment in a confined space while ensuring that air samples can smoothly enter the gas collection submodule. The gas collection submodule is located at the top of the strap and is connected to the gas detection submodule, enabling real-time collection of air samples around the operator.

[0042] The gas detection subunit has the same detection accuracy as the gas detector unit, enabling accurate detection of gas concentrations around workers. The body condition detection module uses a photoelectric sensor to collect photoelectric signals from the human pulse and convert them into blood pressure and heart rate data. The detection accuracy can reach ±2 mmHg (blood pressure) and ±1 beat / minute (heart rate), accurately reflecting the worker's physical condition.

[0043] The second control module features a flexible display screen that conforms to the curvature of the watch strap, making it easy for operators to view data. The buzzer and warning lights function in the same way as the gas detector, promptly alerting operators to abnormal data. The second communication module also uses the LoRa wireless transmission protocol to ensure stable data transmission to the monitoring handheld terminal.

[0044] As one possible implementation, the handheld terminal for monitoring personnel uses an industrial-grade tablet, which is waterproof and dustproof, suitable for various working environments. The receiving module can simultaneously receive data from multiple gas detectors and multi-functional detectors. The data processing module integrates the received data and displays gas content curves at different elevations within a confined space, as well as the worker's blood pressure and heart rate curves, on the terminal interface, allowing monitoring personnel to intuitively view data trends. When the detected data exceeds the safety threshold, the monitoring handheld terminal will issue an audible and visual alarm and highlight the abnormal data on the interface, reminding the monitoring personnel to take timely action. The monitoring handheld terminal also has data storage capabilities, capable of storing detection data from at least 100 operations for subsequent archiving and analysis.

[0045] Therefore, this application addresses several issues. First, it modifies existing gas detection devices into watchband-style units. The upper structure houses the gas detection device, while a body condition monitoring device is added near the pulse point at the lower part. This overcomes the limitation of the previous device, which could only detect gases. The existing device can now monitor the levels of toxic and harmful gases, combustible gases, and oxygen in the work environment, as well as the physical condition of the workers. Second, it deploys gas detectors at different elevations in the work area as needed to detect the levels of toxic and harmful gases, combustible gases, and oxygen at varying elevations, overcoming the limitation of existing methods that can only monitor the surrounding environment. Third, it adds wireless data transmission devices to the existing instruments, allowing workers to use receiving devices outside the work area to view the environmental conditions at various elevations and around them in real time, while simultaneously monitoring their physical and mental well-being, thus preventing the risks associated with workers concealing or falsifying information.

[0046] In summary, the multifunctional detection system for confined space operations described in this application enables monitoring personnel to monitor environmental data such as the content of toxic and harmful gases, combustible gases, and oxygen at the location of workers, as well as various health status data of workers. It converts worker reports into real-time monitoring data that monitoring personnel can view on a handheld terminal via wireless transmission, providing accurate data for monitoring personnel to control on-site operations. Furthermore, by deploying gas detectors at different elevations and combining them, environmental data at different elevations within the confined space can be monitored, achieving a wider detection range and providing more comprehensive and richer support data for monitoring personnel's decision-making. Moreover, the system incorporates a health status detection device into the gas detectors, avoiding the traditional single-method judgment of confined space operations based solely on gas content. This enriches the means for monitoring personnel to determine whether on-site operations can continue safely. Simultaneously, the wireless transmission device allows monitoring personnel to monitor the on-site situation in real time, significantly improving emergency response capabilities and greatly enhancing on-site operational safety. Therefore, this system improves the accuracy, timeliness, comprehensiveness, and reliability of monitoring the working environment and worker status within confined spaces.

[0047] To more clearly illustrate the specific implementation process of detecting environmental and physical condition parameters using the multifunctional detection system suitable for confined space operations, a multifunctional detection method for confined space operations proposed in this application embodiment will be described in detail below. This method is applied to the multifunctional detection system for confined space operations in the above embodiment, that is, by controlling the detection system in the above embodiment to realize the detection method of this embodiment. The various devices involved in this method are as described in the above embodiments and will not be repeated here.

[0048] Figure 4This is a flowchart illustrating a multifunctional detection method suitable for confined space operations proposed in an embodiment of this application, as shown below. Figure 4 As shown, the method includes the following steps: Step S101: Conduct pre-operation inspection of the confined space work site based on multiple gas detectors. The multiple gas detectors are arranged at different elevations within the confined space work site. The pre-operation inspection is used to check whether the environment of the confined space work site is normal.

[0049] Specifically, this step involves using multiple gas detectors placed at different elevations within the confined space work area to conduct pre-operation testing, ensuring that the environmental parameters within the confined space work area meet relevant requirements for subsequent operations.

[0050] In one embodiment of this application, pre-operation inspection of a confined space work area is performed based on multiple gas detectors, including: ventilating the confined space work area; checking whether the multiple gas detectors are working properly and replacing any malfunctioning gas detectors; placing the multiple gas detectors at the bottom, middle, and top of the confined space work area and detecting data of various gases at different elevations using the multiple gas detectors, and wirelessly transmitting the data of various gases to a remote receiving module; the receiving module determines whether the data of various gases meets the operation standards, and if the operation standards are not met, ventilation is performed again.

[0051] Specifically, such as Figure 5 As shown, in this embodiment, the confined space work area is first fully ventilated. Before commencing confined space work, gas detectors are used to measure the content of various gases. First, the functionality of each gas detector is tested. Then, the working gas detectors are secured with ropes. Then, as... Figure 6 As shown, three gas detectors are placed at the bottom, middle, and top of the confined space work area to detect the levels of flammable and explosive gases, toxic and harmful gases, and oxygen in each location. The data from the handheld terminal is then checked. If no abnormalities are found, entry into the confined space is permitted. If abnormalities are detected, continuous ventilation of the confined space continues until the detection is passed, at which point entry is allowed. Furthermore, during subsequent operations, monitoring personnel can still view the gas content data detected by each gas detector in real time outside the confined space to take timely measures in case of abnormalities.

[0052] To more clearly illustrate the specific implementation process of the multifunctional detection method applicable to confined space operations of this application in practical applications, the following is an exemplary description using a confined space operation in an underground sewage tank as an example in a specific embodiment of this application.

[0053] In this example, the pre-operation preparation includes the following steps: First, open the ventilation opening of the sewage tank and use ventilation equipment to fully ventilate the sewage tank for 2 hours to remove the toxic and harmful gases accumulated in the tank.

[0054] The second step is to check the working status of the three gas detectors and two multi-functional detectors. Start the equipment by operating the keyboard and check the self-test data on the display screen to ensure that the gas detection module and body status detection module of the equipment are working properly.

[0055] The third step is to use ropes to fix the three gas detectors at the bottom, middle and top of the sewage tank respectively. The gas detector at the bottom should be 10cm from the bottom of the tank, the gas detector in the middle should be 1.5m from the bottom of the tank, and the gas detector at the top should be 3m from the bottom of the tank. After the installation is completed, confirm that the gas detectors are stable and will not fall.

[0056] Furthermore, the pre-operation detection includes the following steps: First, start 3 sets of gas detectors. The gas collection module starts collecting air samples at different elevations in the sewage tank. The gas detection module detects the content of hydrogen sulfide, carbon monoxide, methane and oxygen in the samples. The detection data is transmitted to the monitoring handheld terminal through the first wireless communication module.

[0057] The second step involved monitoring personnel viewing the test data via a handheld monitoring terminal. The data showed that at the bottom, hydrogen sulfide was 5 ppm, carbon monoxide was 3 ppm, methane was 0, and oxygen was 20.5%; in the middle, hydrogen sulfide was 3 ppm, carbon monoxide was 2 ppm, methane was 0, and oxygen was 20.7%; and at the top, hydrogen sulfide was 1 ppm, carbon monoxide was 1 ppm, methane was 0, and oxygen was 20.9%. All data met the safety standards for confined space operations, allowing personnel to enter the sewage tank.

[0058] Step S102: If the pre-operation inspection is passed, an in-operation inspection is carried out based on the multi-functional detector worn by the worker. The in-operation inspection is used to detect whether the working environment and the worker's physical condition are normal.

[0059] In one embodiment of this application, on-site detection based on a multi-functional detector worn by the worker includes: detecting whether the multi-functional detector is working properly and replacing any malfunctioning multi-functional detectors; wearing the multi-functional detector on the worker's body and detecting data of various gases in the work environment and the worker's physical condition data through the multi-functional detector, wirelessly transmitting the data of various gases and the physical condition data to a remote receiving module; and determining in the receiving module whether the data of various gases and the physical condition data meet the corresponding work standards.

[0060] Specifically, such as Figure 7 As shown, before entering a confined space for work, first check if the multi-functional gas detector is functioning properly. If it is, the worker may enter the confined space with a qualified multi-functional gas detector. During the operation, the worker shall use the multi-functional detector to report the content of various gases, blood pressure, heart rate, etc., within the confined space to the monitoring personnel outside the confined space every 15 minutes.

[0061] In this embodiment, the receiving module determines whether the data of multiple gases and the body status data meet the corresponding operating standards. This includes comparing the data detected by multiple gas detectors displayed by the receiving module with the data displayed by the multi-functional detector to determine whether the staff has misreported the detection data.

[0062] Specifically, in this embodiment, monitoring personnel outside the confined space can also verify the data via a handheld terminal to prevent workers inside the confined space from concealing or falsifying data. For example, in the mode where workers actively send detection data, monitoring personnel can compare the gas data detected by the gas detector at the worker's location displayed on the handheld terminal with the gas detection data actively sent by the worker. If the difference between the two is greater than a preset range, it can be inferred that the worker has falsified data. As another example, monitoring personnel can also compare the worker's physical condition data displayed on the handheld terminal with the worker's self-reported physical condition information to more accurately determine the worker's physical condition.

[0063] Continuing with the example above, the detection during the operation includes the following steps: First, two workers wear multi-functional detectors and enter the sewage tank to clean it. The multi-functional detectors collect air samples around the workers and their blood pressure and heart rate data in real time, and transmit them to the monitoring handheld terminal through the second wireless communication module.

[0064] The second step involves monitoring personnel using a handheld monitoring terminal to view real-time data on gas content at various elevations within the wastewater tank, as well as the physical condition data of the workers. Thirty minutes after the start of the operation, the hydrogen sulfide content at the bottom rose to 8 ppm, approaching the safety threshold of 10 ppm. The monitoring personnel immediately alerted the workers via the handheld monitoring terminal, requiring them to pay attention to changes in the working environment and closely monitor data changes.

[0065] Step S103: If the in-operation test fails, take emergency measures until the work environment and the physical condition of the workers are normal, and then re-perform the in-operation test.

[0066] Specifically, if the work environment or the physical condition of the workers does not meet the requirements of the work, the workers should be evacuated in time, and the work can only be carried out after the work environment and the physical condition of the workers have recovered.

[0067] Continuing with the example above, if, during the monitoring process, at the 45th minute, a worker's heart rate rises from 80 beats / minute to 110 beats / minute and blood pressure rises from 120 / 80 mmHg to 140 / 90 mmHg, the monitoring personnel will immediately issue an evacuation order, requiring both workers to evacuate the sewage tank immediately. Upon receiving the order, the workers will immediately stop working and evacuate outside the sewage tank.

[0068] Furthermore, the post-operation cleanup process includes the following steps: After the personnel evacuate the sewage tank, the multi-functional detector is turned off, the device's strap is cleaned, and the device is checked for damage. The device is then placed in a dedicated storage box. Next, the three gas detectors deployed in the sewage tank are retrieved, their surfaces are cleaned, and the gas collection modules are checked for blockages. The devices are then turned off and placed in the storage box. Finally, the monitoring personnel export all the monitoring data from this operation via a handheld terminal, including gas content change curves at different elevations and changes in the personnel's physical condition. This data is archived for subsequent operational safety analysis.

[0069] In summary, the multifunctional detection method for confined space operations in this application embodiment can monitor the content of toxic and harmful gases, combustible gases, oxygen content, and the physical health status of workers in confined spaces. Through wireless transmission devices, the monitoring personnel can keep abreast of the on-site working environment and the status of workers in real time. When adverse situations are found, personnel can be evacuated from the work site in a timely manner, avoiding safety accidents caused by workers concealing or falsely reporting information.

[0070] To implement the above embodiments, this application also proposes a non-transitory computer-readable storage medium storing a computer program, which, when executed by a processor, implements the multifunctional detection method for confined space operations as proposed in the foregoing embodiments of this application.

[0071] It should be noted that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0072] Furthermore, in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this invention.

Claims

1. A multifunctional detection system suitable for operations in confined spaces, characterized in that, include: Multiple gas detectors, multi-functional detectors, and receiving modules; among them, The multiple gas detectors are arranged at different elevations within the confined space work area. The multiple gas detectors are used to detect data of various gases at different elevations within the confined space work area and transmit the detected gas data to the receiving module via wireless communication technology. The multi-functional detector is worn by the staff inside the confined space work area. The multi-functional detector is used to detect data of various gases in the work environment and the staff's physical condition data, and automatically transmits the detected gas data and the physical condition data to the receiving module through wireless communication technology. The receiving module is used to display the real-time data transmitted by the multiple gas detectors and the multi-functional detector to the remote monitoring personnel, so that the monitoring personnel can know the on-site working environment and the physical condition of the workers.

2. The multifunctional detection system for confined space operations according to claim 1, characterized in that, The gas detector includes: The first gas collection module is used to collect various gases at corresponding elevations inside the confined space work area. A gas detection module is used to detect the content of various gases collected by the first gas collection module; The first control module is used to debug the gas detector, display the data detected by the gas detection module, and issue alarms in various ways when an abnormality is detected. The first communication module is used to transmit the data detected by the gas detection module to the receiving module via wireless communication technology.

3. The multifunctional detection system for confined space operations according to claim 1, characterized in that, The multifunctional detector includes: The second gas collection module is used to collect various gases around the staff member; A gas and personnel physical condition detection module includes a gas detection unit and a physical condition detection unit. The gas and personnel physical condition detection module is a watchband type. The physical condition detection unit is located below the gas detection unit. The gas detection unit is used to detect the content of various gases collected by the second gas collection module. The physical condition detection unit is used to detect various physical condition data of the staff. The second control module is used to debug the multi-functional detector, display the data detected by the gas and personnel body status detection module, and issue alarms in various ways when an abnormality is detected. The second communication module is used to transmit the data detected by the gas and personnel body status detection module to the receiving module via wireless communication technology.

4. The multifunctional detection system for confined space operations according to claim 3, characterized in that, The gas detection unit includes: an H2S detection module, a CO detection module, a CH4 detection module, and an O2 detection module; The body condition detection unit is positioned to correspond to the wearer's pulse point. The body condition detection unit includes a blood pressure detection module and a heart rate detection module.

5. The multifunctional detection system for confined space operations according to claim 3, characterized in that, The second control module includes: a display screen, a buzzer, a warning light, and a keyboard.

6. A multifunctional detection method suitable for operations in confined spaces, characterized in that, The method, applied to a multifunctional detection system suitable for confined space operations as described in any one of claims 1-5, comprises the following steps: Pre-operation inspection of confined space work sites is carried out using multiple gas detectors, wherein the multiple gas detectors are arranged at different elevations within the confined space work site, and the pre-operation inspection is used to check whether the environment of the confined space work site is normal. In the case of passing the pre-operation inspection, in-operation inspection is carried out based on the multi-functional detector worn by the worker, wherein the in-operation inspection is used to detect whether the working environment and the worker's physical condition are normal; If the work fails the inspection, emergency measures should be taken until the work environment and the physical condition of the workers are normal, and then the work inspection should be carried out again.

7. The multifunctional detection method for confined space operations according to claim 6, characterized in that, The pre-operation detection of confined space work areas based on the multiple gas detectors includes: Ventilation treatment should be carried out in the confined space work area; Check whether the multiple gas detectors are working properly, and replace any malfunctioning gas detectors. The multiple gas detectors are arranged at the bottom, middle and top of the confined space work site, and the data of multiple gases at different elevations are detected by the multiple gas detectors and wirelessly transmitted to the remote receiving module. The receiving module determines whether the data of the various gases meet the operating standards. If the data does not meet the operating standards, ventilation treatment is carried out again.

8. The multifunctional detection method for confined space operations according to claim 6, characterized in that, The on-site inspection based on the multi-functional detector worn by the worker includes: Check whether the multi-functional detector is working properly, and replace any malfunctioning multi-functional detectors. The multi-functional detector is worn on the worker's body. The multi-functional detector detects data of various gases in the working environment and the worker's physical condition data. The data of various gases and the physical condition data are wirelessly transmitted to a remote receiving module. The receiving module determines whether the data of the various gases and the body condition data meet the corresponding operating standards.

9. The multifunctional detection method for confined space operations according to claim 8, characterized in that, The step of determining whether the data of the multiple gases and the body state data in the receiving module meet the corresponding operating standards includes: The data detected by the multiple gas detectors displayed by the receiving module is compared with the data displayed by the multi-functional detector to determine whether the staff member has misreported the detection data.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the multifunctional detection method for confined space operations as described in any one of claims 6-9.

Images