Multifunctional hanging neck type individual sampling device

Abstract

The utility model discloses a multifunctional neck-hung individual sampling device, which comprises a neck-hung main body, an adjustable flexible hanging belt connected to the main body, an internal independent device installation area, a noise detection device, a microphone and a sound level meter integrated in the neck-hung main body, the microphone being fixed to the shoulder position of the main body and the acoustic inlet facing the outside, a chemical substance sampling device, a sampling pump, at least one sampling connector connected to the sampling pump, and the sampling connector being arranged at a sampling connector interface, a control and data processing device arranged at the waist position of a user through a waistband fixing buckle and electrically connected to the noise detection device and the chemical substance sampling device. The integrated design of the various sampling devices and the control device realizes synchronous, continuous and convenient sampling of occupational hazard factors, improves the sampling efficiency and data accuracy, and provides strong support for occupational health risk assessment.

Description

Technical Field

[0001] This utility model belongs to the field of occupational health monitoring technology, specifically relating to a multifunctional neck-hanging individual sampling device, and more particularly to a multifunctional neck-hanging individual sampling device that can simultaneously collect occupational hazard factors and accurately analyze data, so as to be suitable for occupational health monitoring of workers in various complex work scenarios, and to provide comprehensive and reliable data support for occupational health risk assessment. Background Technology

[0002] Occupational health monitoring is a crucial link in protecting workers' health rights. Individual sampling, as a core monitoring method, needs to accurately capture various occupational hazard factors that workers face in their actual work processes. However, existing individual sampling equipment has many limitations and cannot meet the monitoring needs in complex working environments. The main problems are as follows:

[0003] Poor portability and cumbersome operation: Traditional individual sampling devices are mostly independent single-unit structures, such as standalone noise detectors and chemical samplers, which are large in size and heavy in weight. Workers need to wear multiple devices at the same time, which not only takes up space in their hands or other parts of their body, affecting normal operation, but also makes sampling interruption or data deviation easy due to device collisions or entanglement.

[0004] Limited functionality and asynchronous data: Various sampling devices operate independently, making it impossible to simultaneously collect data on multiple occupational hazard factors such as noise and chemicals. Even when multiple devices are used in combination, differences in time references and data recording formats make it difficult to synchronize and correlate data. This results in the inability to accurately determine the synergistic exposure of different hazard factors during subsequent analysis, affecting the accuracy of occupational health risk assessment.

[0005] Lack of real-time monitoring and anomaly warning: Most existing equipment only has data storage functions and cannot display the sampling status (such as whether the sampling pump is working properly and whether the battery power is sufficient) and environmental parameters (such as the impact of temperature and humidity on sampling efficiency) in real time. When anomalies occur during the sampling process (such as sampling medium blockage or equipment failure), it is difficult for staff to detect them in time, which can easily lead to invalid sampling data and require the sampling work to be repeated, significantly reducing monitoring efficiency.

[0006] Low data transmission and analysis efficiency: After sampling, data from each device must be exported one by one via wired connection, a complex and time-consuming process. Furthermore, inconsistent data formats necessitate manual format conversion and integration, increasing the workload of data analysis and making the results susceptible to errors introduced by manual operation, thus affecting the reliability of monitoring results.

[0007] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a multifunctional neck-mounted individual sampling device.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0009] The purpose of this invention is to provide a multifunctional neck-hanging individual sampling device.

[0010] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0011] A multifunctional neck-mounted individual sampling device, characterized in that it includes:

[0012] A neck-hanging main body is connected to an adjustable flexible strap, and the interior is divided into independent device installation areas. The surface of the neck-hanging main body is provided with a sampling connector interface and a charging interface, and the charging interface is connected to a rechargeable power supply set inside the neck-hanging main body.

[0013] A noise detection device includes a microphone and a sound level meter integrated within the neck-mounted body. The microphone is fixed to the shoulder of the body with its acoustic inlet facing outwards, and is used to collect noise data and convert it into a digital signal.

[0014] A chemical substance sampling device, wherein the sampling connector interface is integrated into the neck-mounted body, includes a sampling pump and at least one sampling connector connected to the sampling pump. The sampling connector is located at the sampling connector interface (the sampling connector interface is located on the side front of the body near the user's breathing belt) for connecting to an external sampling medium and collecting chemical substances in the target environment such as air. The external sampling medium (33) is one of activated carbon tube, silica gel tube, absorbent box, filter membrane clip or diffusion sampler.

[0015] A control and data processing device is mounted on the user's waist via a belt buckle and is electrically connected to the noise detection device and the chemical substance sampling device. It has a built-in microprocessor and SD card for controlling the start and stop of each device, setting sampling parameters, synchronously receiving and storing timestamped data, and generating a draft of an exposure assessment report.

[0016] In one or more embodiments of this utility model, the sampling pump of the chemical substance sampling device is a miniature diaphragm pump with a flow rate range of 0.1-5 L / min, and the flow rate can be adjusted by a control and data processing device; the sampling connector is a standard Luer-lock interface.

[0017] In one or more embodiments of this utility model, the microphone of the noise detection device is a high-precision condenser microphone with a frequency response range of 20Hz-12.5kHz and a measurement range of 30dB-130dB; the sound level meter integrates signal amplification, filtering, A-weighting network and AD conversion functions.

[0018] In one or more embodiments of this utility model, an environmental monitoring device is further included, which is integrated into the independent device installation area of ​​the neck-hanging body and is communicatively connected to the control and data processing device. The environmental monitoring device is selected from: a temperature sensor (measurement range -10℃-60℃, accuracy ±0.5℃), a humidity sensor (measurement range 10%-90%RH, accuracy ±3%RH), and a barometric pressure sensor (measurement range 80-110kPa, accuracy ±0.1kPa), used to collect environmental parameters.

[0019] In one or more embodiments of this utility model, a positioning device is further included, which is integrated on the independent device installation area of ​​the neck-hanging body and connected to the control and data processing device. The positioning device is selected from at least one of the following: GPS device (positioning accuracy within 10m), Beidou device (positioning accuracy within 5m), or Bluetooth beacon positioning device (positioning accuracy within 3m), and is used to collect the location information of the device.

[0020] In one or more embodiments of this utility model, a human-computer interaction device is also included, which is disposed on the independent device installation area of ​​the neckband body and connected to the control and data processing device. The device includes an OLED display screen, LED indicator lights, function buttons and a vibration motor, and is used to display data, indicate device status, realize local operation and abnormal alarm.

[0021] In one or more embodiments of this utility model, a communication device is also included, integrated on the independent device mounting area of ​​the neckband body and connected to the control and data processing device. The communication device is one or more combinations of Bluetooth, Wi-Fi, or 4G / 5G mobile communication devices, used to wirelessly transmit the collected data to an external terminal or cloud server.

[0022] In one or more embodiments of this utility model, a power supply device is also included, integrated inside the control and data processing device or on an independent device mounting area of ​​the neckband body. A rechargeable lithium battery pack is used to power the noise detection device, the chemical substance sampling device, and the control and data processing device, supporting fast charging and simultaneous charging and sampling. The lithium battery pack of the power supply device has a capacity of 5000mAh and a voltage of 3.7V, providing a battery life of no less than 12 hours in continuous sampling mode. It is equipped with a Type-C fast charging interface, and can restore 80% of the battery capacity in 2 hours of charging.

[0023] In one or more embodiments of this utility model, the adjustable flexible strap has a two-in-one flexible tube structure, which includes a sampling extension tube and a sound level meter extension line. The sampling extension tube is connected between the sampling pump and the sampling connector, and the sound level meter extension line is connected between the sound level meter and the microphone.

[0024] In one or more embodiments of this utility model, a protective sleeve is also provided on the outside of the sampling extension tube and the sound level meter extension line of the two-in-one flexible tube structure.

[0025] The control and data processing unit is configured to add a unified timestamp to the data from the noise detection device, chemical substance sampling device, and optional environmental monitoring device and positioning device with millisecond-level accuracy, and generate a draft exposure assessment report containing sampling time, location, parameter settings, and raw data.

[0026] The use of the multifunctional neck-mounted individual sampling device includes the following steps:

[0027] S1: Wearing device: Wear the neck-mounted main body on the neck with a flexible strap, fix the control and data processing device to the waist with a belt, check the connection status of each device, install the appropriate external sampling medium (33), and ensure that the microphone and sampling connector are facing the correct direction.

[0028] S2: Set parameters. Set sampling parameters through the function buttons of the human-computer interaction device or external terminal (mobile APP, computer), including sampling duration, noise sampling frequency, sampling pump flow rate, and environmental parameter monitoring interval. If equipped with a positioning device, enable the positioning function.

[0029] S3: Start sampling. Simultaneously start the noise detection device, chemical substance sampling device and optional device via the "Start" button or remote command. Control the data processing device to start synchronously collecting and storing timestamped data. If equipped with a communication device, transmit data to an external terminal or cloud in real time.

[0030] S4: Process monitoring. During the sampling process, users can view real-time data and equipment status through the display screen of the human-machine interface device or an external terminal. If any abnormality occurs (sampling pump blockage, insufficient power, environmental parameters exceeding the standard), the device will issue an audible, visual and vibration alarm, and the user can handle it in time.

[0031] S5: Stop sampling. After the sampling period ends or a "stop" command is received, the device will automatically stop the operation of each device. If a communication device is equipped, the remaining data transmission will be completed.

[0032] S6: Data export and sample processing: Remove the external sampling medium (33) and send it to the laboratory for analysis. Export the data stored in the device via wired (USB) or wireless (communication device 9) means.

[0033] S7: Comprehensive assessment combines laboratory analysis results with synchronous data exported from the device, utilizes the initial draft of the exposure assessment report generated by the control and data processing device to complete the comprehensive assessment of workers' occupational hazard exposure and determine whether it meets the occupational exposure limit requirements.

[0034] Compared with the prior art, the purpose of this utility model is to overcome the shortcomings of existing personal sampling devices, such as poor portability, single function, asynchronous data, and lack of real-time monitoring, and to provide a multi-functional neck-mounted personal sampling device. Through integrated design, multiple sampling devices and control devices are integrated to achieve synchronous, continuous, and convenient sampling of occupational hazard factors, improve sampling efficiency and data accuracy, and provide strong support for occupational health risk assessment.

[0035] Specifically, it can have the following beneficial effects.

[0036] 1. Significantly improved portability and comfort: The neckband design frees up the hands, and the main body is made of lightweight materials and has an ergonomic structure. It is lightweight and comfortable to wear, and will not affect the normal operation of workers. It is suitable for various complex work scenarios such as workshop assembly lines, outdoor construction, and high-altitude operations.

[0037] 2. Enables simultaneous sampling of multiple factors: Integrates noise detection and chemical substance sampling functions, and ensures data synchronization through a unified timestamp, solving the problem of asynchronous data from traditional multi-device sampling. It can accurately analyze the synergistic exposure of multiple occupational hazard factors and provide a complete data chain for comprehensive risk assessment.

[0038] 3. High degree of intelligence and convenient operation: The sampling process is automated through control and data processing devices, supporting local and remote parameter settings, real-time data monitoring and abnormal alarms, reducing manual intervention and operation difficulty; it automatically generates a draft of the exposure assessment report, reducing the workload of subsequent data processing and analysis.

[0039] 4. Strong data reliability and traceability: High-precision sensors and standardized sampling devices ensure data acquisition accuracy; the combination of positioning devices and timestamps enables precise traceability of sampling locations and times; encrypted data storage and wireless transmission prevent data loss or tampering, ensuring the reliability of monitoring results.

[0040] 5. Highly expandable and adaptable to diverse needs: Optional environmental monitoring, positioning, human-computer interaction and communication devices can be added. Functions can be flexibly combined according to different monitoring tasks (such as indoor organic vapor sampling, outdoor noise and dust synchronous monitoring) to meet diverse occupational health monitoring needs. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a multifunctional neck-hanging individual sampling device in one embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram showing the usage state of the multifunctional neck-hanging individual sampling device in one embodiment of the present invention.

[0044] Explanation of key figure labels:

[0045] 1-Neck-mounted main body, 11-Sampling connector, 12-Microphone, 2-Adjustable flexible strap, 21-Sampling extension tube, 22-Sound level meter extension cable, 3-Control and data processing device, 31-Sampling pump, 32-Sound level meter. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0047] like Figure 1-2 As shown, a multifunctional neck-hook personal sampling device according to one embodiment of this utility model includes a neck-hook main body, a noise detection device, a chemical substance sampling device, and a control and data processing device. The power supply can be an external AC power supply via a connecting cable or a built-in power supply. The sampling device can also selectively integrate environmental monitoring devices, positioning devices, human-computer interaction devices, and communication devices as needed. These devices work collaboratively to achieve multi-dimensional occupational hazard factor collection and intelligent data processing.

[0048] Neck-mounted body

[0049] Materials and Structure: Made of lightweight, high-strength materials (such as ABS engineering plastic and carbon fiber composite), the overall weight is kept below 300g to avoid neck fatigue caused by prolonged wear. The main body is ergonomically designed to fit the curve of the neck, and features adjustable flexible straps on both sides to accommodate users with different neck sizes.

[0050] Internal layout: The main body is divided into independent installation areas, which can be used to fix the microphone of the noise detection device, the environmental monitoring device, and the positioning device. The external part can also be equipped with sampling connector interfaces to connect the sampling connector of the chemical substance sampling device, the human-machine interface device mounting slot, or the charging interface, etc., which is compact and easy to operate.

[0051] Noise detection device

[0052] Components include a microphone and a sound level meter; the microphone is a high-precision condenser microphone with a frequency response range of 20Hz-12.5kHz and a measurement range of 30dB-130dB, ensuring coverage of common noise intensity ranges in workplaces; the sound level meter integrates signal amplification, filtering, A-weighting network, and AD conversion functions, which can convert the acoustic signals collected by the microphone into digital signals.

[0053] Installation location: The microphone is fixed to the shoulder of the neck-mounted main body, with the acoustic inlet facing outward (away from the human body) to avoid interference from the human body or clothing friction on the noise collection, ensuring that the collected noise data truly reflects the noise level of the worker's environment.

[0054] Chemical substance sampling device

[0055] Components: Includes a sampling pump and at least one sampling connector connected to the pump. An external sampling medium for enrichment or coarse filtration is also provided on the outside of the sampling connector. The sampling pump is a miniature diaphragm pump with a flow rate range of 0.1-5 L / min. The flow rate can be adjusted via a control and data processing device to adapt to the needs of different types of sampling media. The sampling connector is a standard Luer-lock interface for easy and quick replacement of the external sampling medium.

[0056] External sampling media: can be selected according to the type of chemical substance to be collected, including but not limited to activated carbon tubes (suitable for organic vapors, such as benzene and toluene), silica gel tubes (suitable for polar compounds, such as formaldehyde and ammonia), absorption liquid boxes (suitable for gaseous pollutants, such as sulfur dioxide and nitrogen oxides), filter membrane clips (suitable for dust and metal oxide particles), and diffusion samplers (suitable for low-concentration, long-term sampling scenarios).

[0057] Installation location: The sampling connector is placed on the front side of the neckband body, close to the user's breathing belt (10-15cm away from the mouth and nose), to ensure that the collected air sample is consistent with the composition of the air actually inhaled by the worker, thereby improving the accuracy of chemical exposure monitoring.

[0058] Control and data processing devices

[0059] Installation location: It adopts a split design and is set at the user's waist (fixed by a waist belt). It is connected to the neck-hanging main body through a waterproof wire in the adjustable flexible strap, which avoids excessive weight of the main body and makes it easy for the user to operate.

[0060] Core functions:

[0061] a. Device control: The noise detection device and chemical substance sampling device can be started and stopped by the built-in microprocessor (such as STM32 series microcontroller). Timed sampling (such as setting the sampling duration to 8 hours to meet the occupational exposure limit monitoring requirements) or continuous sampling mode can be set.

[0062] b. Parameter settings: Supports setting sampling parameters through human-computer interaction devices or external terminals (such as mobile APP), including noise sampling frequency (such as 1 time / second), sampling pump flow rate, environmental parameter monitoring interval, etc.

[0063] c. Data processing: Simultaneously receive digital signals from the noise detection device and flow data from the chemical substance sampling device, add a unified timestamp (accuracy in milliseconds) to each set of data to ensure the time synchronization of the two hazard factor data; at the same time, preprocess the data (such as removing outliers and smoothing the data) and store it on the built-in SD card (capacity not less than 32GB, supporting data encryption).

[0064] d. Report generation: After sampling, the system can automatically integrate noise exposure data (such as equivalent continuous A-weighted sound level Leq), chemical sample volume and concentration calculation data to generate a standardized draft exposure assessment report, including sampling time, location, parameter settings and raw data list, which facilitates subsequent laboratory analysis and report improvement.

[0065] Power supply device

[0066] Power supply: A rechargeable lithium battery pack (capacity 5000mAh, voltage 3.7V) is used to provide stable voltage to each device through a DC-DC conversion circuit (3.3V for noise detection device, 5V for sampling pump, and 3.3V for control device).

[0067] Battery life and charging: In continuous sampling mode (sampling pump flow rate 1L / min, noise sampling frequency 1 time / second, environmental monitoring interval 1 minute), the battery life is no less than 12 hours, meeting the sampling needs of all-day work; equipped with a Type-C fast charging interface, 2 hours of charging can restore 80% of the power, and it supports charging while sampling to avoid data loss due to insufficient power during sampling.

[0068] Environmental monitoring devices

[0069] Composition and function: It integrates a temperature sensor (measurement range -10℃-60℃, accuracy ±0.5℃), a humidity sensor (measurement range 10%-90%RH, accuracy ±3%RH), and a barometric pressure sensor (measurement range 80-110kPa, accuracy ±0.1kPa), and collects environmental parameters in real time and transmits them to the control and data processing device.

[0070] Data application: Environmental parameter data is stored synchronously with noise and chemical substance data, which can be used to analyze the impact of environmental factors on sampling results (such as the impact of temperature and humidity changes on the adsorption efficiency of activated carbon tubes), providing a basis for data correction and result interpretation.

[0071] Positioning device

[0072] Type and accuracy: GPS device (positioning accuracy within 10m), Beidou device (positioning accuracy within 5m) or Bluetooth beacon positioning device (suitable for indoor and other scenarios with weak satellite signals, positioning accuracy within 3m) can be selected to flexibly adapt to the usage environment.

[0073] Function: It collects the location information of the device in real time and stores it in association with the sampling data, which facilitates the tracing of sampling locations (such as different workshops in a factory or different areas in a construction site). It is especially suitable for scenarios that require continuous sampling at multiple locations, thereby improving the traceability of sampling data.

[0074] Human-computer interaction devices

[0075] Components: may include a 0.96-inch OLED display (128×64 resolution, supports black and white display, low power consumption), 3 LED indicators (corresponding to power status, sampling status, and abnormal alarm respectively), 3 function buttons (power button, start / stop button, parameter setting button) and vibration motor (the motor can be used to provide vibration alarm when powered on in abnormal conditions, so that users can be aware of it).

[0076] Interactive functions: The display screen shows the current sampling time, sampling pump flow rate, real-time noise level, battery level, and environmental parameters in real time; LED indicators use different colors (green - normal, yellow - low battery, red - abnormal) and flashing frequency to indicate the device status; function buttons support local parameter settings and sampling control; when an abnormality occurs (such as sampling pump stall or battery level below 10%), the vibration motor emits intermittent vibration (frequency 1 time / second), which, together with the red indicator light, realizes a triple alarm of sound, light, and vibration to ensure that the user can detect it in time.

[0077] communication device

[0078] Communication methods: Supports Bluetooth devices (Bluetooth 5.0, transmission distance within 10m, suitable for short-range connection with mobile phones and tablets), Wi-Fi devices (supports 802.11b / g / n protocol, transmission distance within 50m, suitable for workshops, laboratories and other scenarios with Wi-Fi coverage), or 4G / 5G mobile communication devices (supports full network compatibility, suitable for outdoor scenarios without local area network). Single or combined communication methods can be selected according to the usage environment.

[0079] Data transmission: Enables real-time wireless transmission of sampled data. Users can view real-time sampled data and device status via mobile app or computer software, and remotely set sampling parameters (such as adjusting the sampling pump flow rate). After sampling, all data can be exported with one click (supported formats: Excel, CSV, PDF) without disassembling the device, greatly improving data transmission efficiency.

[0080] Example 1: Basic Multifunctional Neckband-Style Individual Sampling Device

[0081] The device in this embodiment is suitable for scenarios where only simultaneous acquisition of noise and chemical substances is required. Its specific structure is as follows: Figure 1 As shown, it may include a neck-hanging main body 1, a control and data processing device 3 and a power supply device, as well as an adjustable flexible strap 2 connecting the neck-hanging main body 1 and the control and data processing device 3.

[0082] Device assembly

[0083] 1. Fix the microphone of the noise detection device to the shoulder position of the neck-mounted main body 1, ensuring that the acoustic inlet faces outward; the sound level meter is integrated inside the control and data processing device 3 and is connected to the microphone 12 through the sound level meter extension line 22 / wire.

[0084] 2. Install the sampling pump of the chemical substance sampling device in an independent compartment inside the control and data processing device. The sampling connector 11 is fixed to the front side of the neck-hanging main body 1 (near the breathing belt) through the sampling connector interface and connected to the sampling pump through the sampling extension tube 21 / silicone tube. Select activated carbon tube as the external sampling medium and connect it to the sampling connector.

[0085] 3. The control and data processing device 3 is mounted on the waist belt via a waist belt buckle and is connected to various devices inside the neck-hanging main body via waterproof wires configured on the adjustable flexible strap 2; the power supply device is integrated inside the control and data processing device 3 to supply power to the entire device.

[0086] Sampling operation steps

[0087] 1. Wearing and Inspection: The user wears the neckband-style main unit around the neck using the flexible straps, adjusting the strap length to a comfortable position; fixes the control and data processing device to the waist, and checks whether the connections of each device are secure and whether the external sampling medium is installed in place.

[0088] 2. Parameter settings: Set the sampling parameters through the function keys (local keys) of the control and data processing device: noise sampling frequency is 1 time / second, sampling pump flow rate is 0.5L / min, and sampling duration is 8 hours (meeting the time requirements for occupational exposure limit monitoring).

[0089] 3. Start sampling: Press the "Start" button. The device will simultaneously start the noise detection device and the chemical substance sampling device. The control and data processing device will start recording data and adding timestamps. The display screen (if the basic model is equipped with a simple display screen) will show the current sampling time, flow rate and real-time noise value.

[0090] 4. Sampling process monitoring: If the sampling pump stalls during the sampling process (such as when the activated carbon tube is blocked), the control and data processing device will indicate the abnormality through an LED indicator (flashing red), and the user can replace the sampling medium in time; if the battery power is below 10%, the yellow indicator will flash to remind the user to charge (it can be connected to a power bank to charge while sampling).

[0091] 5. Sampling Completion and Data Export: After 8 hours of sampling, the device automatically stops working; connect the control and data processing device to the computer via USB data cable to export the data (including noise equivalent continuous A-weighted sound level, cumulative flow of the sampling pump, and timestamp data); remove the external sampling medium (activated carbon tube) and send it to the laboratory for chemical substance concentration analysis.

[0092] 6. Data Integration and Evaluation: Combine the chemical substance concentration data obtained from laboratory analysis with the synchronous data exported by the device, and use the draft exposure assessment report generated by the control and data processing device to complete the comprehensive assessment of workers' occupational hazard exposure and determine whether it meets the occupational exposure limit requirements.

[0093] Example 2: Enhanced Multifunctional Neckband-Style Individual Sampling Device

[0094] The device in this embodiment differs from that in Embodiment 1 in that it also integrates an environmental monitoring device, a positioning device, a human-computer interaction device, and a communication device, making it suitable for comprehensive monitoring needs in complex environments (such as alternating indoor and outdoor operations and multi-location sampling).

[0095] Device features and additional functions

[0096] 1. Environmental Monitoring: The environmental monitoring device collects temperature, humidity, and air pressure data in real time, and stores them synchronously with noise and chemical substance data. For example, when sampling in a high-temperature and high-humidity environment, the adsorption efficiency of the activated carbon tube can be corrected based on the humidity data, improving the accuracy of chemical substance concentration calculations.

[0097] 2. Positioning Function: Employs a BeiDou positioning device to record the coordinates of the sampling location in real time. If a worker alternates between three workshops in the factory, the device can automatically distinguish the sampling data from different workshops, facilitating the analysis of differences in the degree of hazard in each workshop.

[0098] 3. Intelligent Interaction: The OLED display screen of the human-computer interaction device displays multi-dimensional data in real time (noise level, flow rate, temperature, humidity, location information, battery level); when the ambient temperature exceeds 40℃ (which may affect the performance of the sampling pump), the vibration motor vibrates and the red indicator light flashes to remind the user to pay attention to the status of the equipment.

[0099] 4. Wireless transmission: The communication device adopts a dual-mode design of "Bluetooth + 4G". Users can view the sampling data in real time through a mobile APP and remotely adjust the sampling parameters (such as adjusting the sampling pump flow rate from 0.5L / min to 1L / min). After sampling, the data is automatically uploaded to the cloud server, which supports access and sharing from multiple terminals (computers, tablets) without the need to export data on site.

[0100] Typical application scenario: outdoor construction site monitoring

[0101] 1. Scenario Requirements: To monitor the noise and dust (a type of chemical substance) exposure of construction workers in the concrete mixing area, steel bar processing area, and hoisting area, it is necessary to record sampling data from different areas, and there is no power supply or Wi-Fi coverage on site.

[0102] 2. Device configuration: Select filter membrane clip as external sampling medium (collecting dust), enable Beidou positioning device (high outdoor positioning accuracy), 4G communication device (data transmission when there is no Wi-Fi), and power supply device is fully charged (12 hours of battery life to meet all-day construction monitoring).

[0103] 3. Sampling process: When workers wear the device to work in different areas, the positioning device automatically records the coordinates and dwell time of each area; the environmental monitoring device collects outdoor temperature (e.g., 35℃) and humidity (60%RH) data; the sampling data is uploaded to the cloud in real time via 4G network, and the managers can view the real-time data on the computer in the office. If the noise in the hoisting area exceeds the standard (more than 85dB), an APP will be sent to the workers' mobile phones to suggest noise reduction measures (e.g., wearing earplugs).

[0104] 4. Data Application: After sampling, the cloud system automatically divides the sampling time period and data of each area according to the location data, generates noise and dust exposure reports for each area, compares the hazard levels of different areas, and provides a basis for optimizing occupational health protection measures at the construction site (such as adding dust covers in the steel bar processing area).

[0105] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0106] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multifunctional neck-hanging individual sampling device, characterized in that, include: A neck-hanging main body is connected to an adjustable flexible strap, and the interior is divided into independent device installation areas. The surface of the neck-hanging main body is provided with a sampling connector interface and a charging interface, and the charging interface is connected to a rechargeable power supply set inside the neck-hanging main body. A noise detection device includes a microphone and a sound level meter integrated within the neckband body, wherein the microphone is fixed to the shoulder of the body and the acoustic inlet faces outward; A chemical substance sampling device, wherein a sampling connector interface is integrated into the neck-mounted body, includes a sampling pump and at least one sampling connector connected to the sampling pump, the sampling connector being disposed at the sampling connector interface; A control and data processing device is mounted on the user's waist via a belt buckle and is electrically connected to the noise detection device and the chemical substance sampling device.

2. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, The sampling pump of the chemical substance sampling device is a miniature diaphragm pump with a flow rate range of 0.1-5 L / min.

3. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, The microphone of the noise detection device is a high-precision condenser microphone with a frequency response range of 20Hz-12.5kHz and a measurement range of 30dB-130dB.

4. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, It also includes an environmental monitoring device, which is integrated into the independent device installation area of ​​the neck-hanging main body and is communicatively connected to the control and data processing device. The environmental monitoring device is selected from: temperature sensor, humidity sensor, and air pressure sensor.

5. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, It also includes a positioning device, which is integrated into the independent device mounting area of ​​the neckband body and connected to the control and data processing device. The positioning device is selected from at least one of a GPS device, a Beidou device, or a Bluetooth beacon positioning device.

6. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, It also includes a human-computer interaction device, which is set on the independent device installation area of ​​the neckband body and connected to the control and data processing device, including an OLED display screen, LED indicator lights, function buttons and vibration motor.

7. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, It also includes a communication device, integrated into the independent device mounting area of ​​the neckband body, and connected to the control and data processing device, which is one or more combinations of Bluetooth device, Wi-Fi device or 4G / 5G mobile communication device.

8. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, It also includes a power supply unit, which is integrated inside the control and data processing device or on the independent device mounting area of ​​the neck-mounted main body.

9. The multifunctional neck-hanging individual sampling device according to claim 1, characterized in that, The adjustable flexible strap has a two-in-one hose structure, which includes a sampling extension tube and a sound level meter extension line. The sampling extension tube connects the sampling pump and the sampling connector, and the sound level meter extension line connects the sound level meter and the microphone.

10. The multifunctional neck-hanging individual sampling device according to claim 9, characterized in that, The sampling extension tube and sound level meter extension line of the two-in-one flexible tube structure are also equipped with protective sleeves on the outside.

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