Interconnected portable gas detector and detection system

Abstract

The invention relates to the field of portable gas detection devices, in particular to an interconnected portable gas detector and detection system.The interconnected portable gas detector comprises a shell, the shell is provided with a gas inlet, and the interconnected portable gas detector further comprises a waterproof structure and a miniature getter pump, and the gas inlet of the miniature getter pump is communicated with the gas inlet; the magnetic attraction charging seat is integrated on the edge of one side of the shell; a buzzer which sounds in a specific state; the system further comprises a central operation module, a gas detection module, a control execution module and a display module. The control execution module comprises a control circuit; the gas detection module detects sucked gas and sends a component analysis result to the central operation module; the central operation module receives a gas analysis result, calculates and compares a safety value, calls and operates a related instruction file, generates an instruction and sends the instruction to the control execution module and the display module; displaying a gas analysis result, and giving an alarm. The portable detector has the advantages that the safety performance of the portable detector is improved, and meanwhile the functions of the portable detector are diversified.

Description

Technical Field

[0001] The present application relates to the field of portable gas detection devices, and in particular to an interconnected portable gas detector and a detection system. Background Art

[0002] A gas detector is a device used to detect the presence and concentration of a specific gas. It is widely used in coal mining, petroleum, chemical industry and other fields to detect the concentration of combustible, flammable and toxic gases or the consumption of oxygen. For ease of use, portable gas detectors with small size, light weight and easy to carry are available for personal or on-site rapid detection. They are usually equipped with display screens, alarm systems, etc. Although their functions are not as good as those of ordinary gas detectors, they can meet the requirements of use.

[0003] According to the purpose and technical requirements of gas detectors, portable gas detectors are divided into two types: civil and industrial. Civilian portable gas detectors have lower performance and lower price, while industrial portable gas detectors have higher requirements for product quality and performance, and strictly meet the requirements of explosion-proof and sealing. The current industrial portable gas detectors have the problem of detecting a single gas. For flammable and explosive gases, catalytic combustion principle detectors are used, and the explosion-proof performance can only achieve flameproof, not intrinsic safety; and the oxygen detector uses an ordinary electrochemical detector, which has a short life, affecting the long-term use of the product.

[0004] In view of the above-mentioned related technologies, the overall design of the portable detector can be improved to improve its safety performance while enriching and diversifying its functions. Summary of the invention

[0005] In order to improve the safety performance of portable detectors and diversify the functions of portable detectors, the present application provides an interconnected portable gas detector and a detection system.

[0006] On the one hand, the present application provides an interconnected portable gas detector adopting the following technical solution: An interconnected portable gas detector comprises a housing, the housing is provided with an air inlet, and further comprises: A waterproof structure is arranged inside the housing near one end of the air inlet; A micro air suction pump is arranged inside the housing, and an air inlet of the micro air suction pump is connected to the air inlet; A magnetic charging stand, integrated into one side edge of the shell; The buzzer is arranged inside the shell and sounds under a specific state.

[0007] By adopting the above technical solution, the air inlet is the main component of the gas detector for gas collection. When using it, the user extends the air inlet as far as possible into the detection space, turns on the micro suction pump, absorbs the gas, and performs detection; considering that excessive inhalation of humid water vapor will affect the inside of the gas detector, a filter tip should be set at the air inlet and filled with filter cotton in actual application to isolate and absorb water vapor; After detecting the presence of harmful gases, the buzzer will sound an alarm to remind the user; in addition, the gas detector in the above solution is equipped with a magnetic charging stand, which improves the sealing performance compared to the traditional interface charging method.

[0008] On the other hand, the present application provides a detection system for interconnected portable gas detectors using the following technical solutions: A detection system of interconnected portable gas detectors, characterized in that it includes a central operation module, a gas detection module, a control execution module, and a display module; The control execution module includes a control circuit of the micro air suction pump, which controls the operation of the micro air suction pump; The gas detection module detects the gas inhaled from the air inlet and sends the gas composition analysis result to the central operation module; The central operation module stores the gas safety values ​​and instruction files of the detection items. The central operation module receives or retrieves the gas analysis results of the gas detection module in real time, calculates and compares the safety values, retrieves and runs the relevant instruction files according to the results, and generates instructions to send to the control execution module and the display module; The display module receives instructions from the central operation module, displays the gas analysis results of the central operation module, and issues an alarm when dangerous gas exists.

[0009] By adopting the above technical solution, the central operation module should select a processing module with data operation and processing capabilities, such as a small computer, a single-chip microcomputer, or a microprocessor integrated in the gas detector to perform data processing and instruction generation; In the above control system, the gas sucked in by the front air inlet is detected by the gas detection module. After the central operation module performs gas analysis and data calculation, the display module displays the calculation results of the central operation module, specifically displays the gas composition, and focuses on displaying the harmful gases or dangerous gases with excessive content.

[0010] Optionally, it also includes; The alarm module includes a control circuit of the buzzer, which controls the operation of the buzzer. The alarm module is connected to the central operation module, receives and reads instructions from the central operation module, and issues an alarm when dangerous gas is detected.

[0011] By adopting the above technical solution, after the above central operation module calculates and analyzes the gas composition, if there is dangerous gas or the content of a specific gas exceeds the standard, the central operation module sends an electrical signal to the alarm module, and the alarm module operates immediately to control the above buzzer to sound a sound to remind the user that there is dangerous gas in this space; The alarm module should work in conjunction with the display module. When the central computing module controls the alarm module to sound an alarm, the central computing module sends a control command to the display module to control the display module to flash the numbers that exceed the normal indicators. Additionally, based on the coordinated operation of the alarm module and the display module, the central computing module marks the calculation results according to the actual concentration level of the harmful gas. According to the concentration level of the harmful gas, the central computing module makes different levels of reminders, and the buzzer emits different levels of sound reminders.

[0012] Optionally, a wireless transmission module is also included; The wireless transmission module is connected to the central operation module to upload the analysis and numerical calculation results of the central operation module to the control terminal; the wireless transmission module is equipped with instant messaging capabilities and is wirelessly connected to other mobile devices.

[0013] By adopting the above technical solution, the wireless transmission module is used for data transmission between the portable gas detector and the outside world, specifically for data and signal connection between the above central operation module and the control terminal, especially signal transmission. Before on-site gas detection, the wireless transmission module operates to connect the gas detector and the control terminal; the central operation module synchronously transmits the detection results and alarm signals to the control terminal, the control terminal receives the alarm signal and alarms accordingly, and the management personnel at the control terminal can also obtain the on-site gas detection situation in real time; The wireless transmission module also supports the connection of portable gas detectors to mobile phones. Users can retrieve detection records through their mobile phones, or the portable gas detectors can send monitoring results to all on-site staff, allowing staff to obtain on-site gas detection conditions through their mobile phones.

[0014] Optionally, the gas detection module includes: A gas detection unit, which analyzes the composition of the collected gas and distinguishes oxygen, carbon dioxide, combustible gas, and toxic gas; A moisture detection unit analyzes the water vapor in the collected gas, sends the collected information to the central computing module, and calculates the humidity.

[0015] By adopting the above technical solution, the gas detection module adopts a four-in-one sensor detection solution to detect combustible gas, oxygen, toxic gas, and carbon dioxide. Toxic gas generally detects carbon monoxide and hydrogen sulfide gas, and combustible gas includes methane, isobutane, etc. A low-power non-dispersive infrared sensor is used, oxygen adopts a lead-free oxygen sensor, and harmful gas adopts an electrochemical sensor, thereby improving the safety of portable gas detector detection; In addition to analyzing the harmful gas content inside the gas, the above-mentioned moisture detection unit is used to detect moisture and humidity, and detect the humidity inside the space. The humidity data should also be uploaded to the control terminal through the wireless transmission module.

[0016] Optionally, a typing module is also included; The input module provides a way for technicians to modify instruction files and a way for users to change the operating status of gas detectors. Users input instructions to overwrite the native instructions of the central operation module.

[0017] By adopting the above technical solution, the input module is used by the technician to change the gas value of the portable gas detector according to different detection occasions of the portable gas detector, specifically, the input module rewrites the gas safety value inside the central operation module, or changes the gas concentration level of the buzzer alarm reminder controlled by the alarm module; Different gas concentration levels are set for different space sizes. If the actual detection space is small, low concentrations of harmful gases or flammable gases will pose a risk to workers. The technicians will lower the alarm value for gas concentration safety and increase the alarm sensitivity of the gas detector.

[0018] Optionally, include self-test module; The self-test module is connected to the central operation module and the control execution module. The self-test module is automatically turned on and runs preferentially to check the remaining power of the gas detector and the operating status of the micro suction pump. The self-test module sends an electrical signal to the control circuit of the control execution module to detect the integrity of the control circuit.

[0019] By adopting the above technical solution, the self-test module is used to self-test the functional integrity of the portable gas detector. Considering that the detection of harmful gases and flammable gases in confined spaces is extremely important and concerns the life safety of workers, the gas detector needs to self-test all its functions every time it is turned on; Specifically, the self-test module is connected to the central operation module, and sends a power-on command to the control terminal through the central operation module and the wireless transmission module until the signal is stably connected; the self-test module sends a self-test electrical signal to the control execution module, and the self-test electrical signal is transmitted in the control circuit until the electrical signal flows back to the self-test module.

[0020] Optionally, also include: A timing module is connected to the input module and the control execution module to receive instructions from the input module; the timing module includes a clock signal generator to generate a periodic clock signal to put the control execution module in a periodic operation state.

[0021] By adopting the above technical solution, in the working process, for example, in the case of gas detection of natural gas and coal gas leakage, regular detection is required. If each detection requires manual operation by staff, it is troublesome and affects on-site maintenance or other work. Therefore, in this application scenario, the portable gas detector is set to the timing mode. The construction personnel place the portable gas detector near the gas source and operate it at preset time intervals, such as 5s, 10s... At each preset time interval, if the portable gas detector detects that the content of harmful gas exceeds the standard, a reminder will be issued.

[0022] Optionally, also include: The life algorithm module is connected to the central operation module and the gas detection module. The life algorithm module pre-stores algorithm instructions written by technicians. It periodically collects the operating time and reaction gas residue inside the gas detection module, and brings the collected data into the algorithm instructions to estimate the service life of the gas detector.

[0023] By adopting the above technical solution, the various gas sensors in the gas detection module all detect the corresponding gas by chemical reaction, and the spatial content of the corresponding gas is determined by the generated content of the specific gas after the chemical reaction; Based on this, in this solution, the remaining content of gas used for chemical reaction in the gas sensor of the gas detection module can be used to estimate the remaining use time of the gas detector.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a waterproof structure inside the shell, it effectively prevents moisture from entering the device, improves the protection performance of the device in complex environments, and ensures the safety and stability of the internal circuit; 2. The setting of the micro suction pump enhances the efficiency of gas collection, ensures the sensitivity and accuracy of the gas detector in complex environments, and further improves the reliability and response speed of detection; 3. The integrated magnetic charging station not only makes charging the device more convenient, but also improves the overall user experience of the portable gas detector and reduces the difficulty of operation during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the main view of the embodiment of the present application.

[0026] Figure 2 It is a cross-sectional view of an embodiment of the present application.

[0027] Figure 3 It is a system logic block diagram of an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Shell; 11. Air inlet; 12. Display screen; 13. Magnetic charging base; 14. Micro air pump; 15. Filter membrane; 16. Buzzer; 2. Input module; 3. Central operation module; 4. Gas detection module; 41. Gas detection unit; 42. Moisture detection unit; 5. Self-test module; 6. Control execution module; 7. Timing module; 8. Display module; 81. Alarm module; 9. Wireless transmission module; 91. Lora unit; 92. Bluetooth unit; 93. Life algorithm module. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] In one aspect, the present application discloses an interconnected portable gas detector. Figure 1 An interconnected portable gas detector includes a shell 1, one side of the shell 1 is a display screen side, and the other side is a rear soft cover side, and a gas detection sensor is integrated inside the shell 1. An air inlet 11 is opened at one end of the shell 1, and a gas inflow pipe is provided in the shell 1 corresponding to the air inlet 11. A filter cotton is provided at one end of the shell 1 corresponding to the air inlet 11. The filter cotton is used to filter dust and particulate pollutants in the air, and absorb moisture in the air to avoid damage to the inside of the gas detector. Furthermore, a hydrophobic film is attached to one end of the filter cotton close to the inside of the gas detector. The filter cotton and the hydrophobic film serve as a waterproof structure to prevent moisture in the air of the area to be detected from entering the inside of the gas detector.

[0031] Reference Figure 1 and Figure 2 A magnetic charging seat 13 is provided on the bottom wall of the shell 1 for wireless charging of the shell 1.

[0032] Reference Figure 1 and Figure 2 A micro air suction pump 14 is arranged inside the shell 1, and the air suction port of the micro air suction pump 14 is connected to the air inlet 11. The micro air suction pump 14 operates to absorb the air to be tested through the air inlet 11. The operating power of the micro air suction pump 14 is adjustable. The operating power of the micro air suction pump 14 is adjusted according to different detection gases and detection distances, and then the corresponding gas suction flow rate is set.

[0033] Reference Figure 1 and Figure 2 A buzzer 16 is provided inside the housing 1 for alarming.

[0034] Reference Figure 1 and Figure 2 A display screen 12 is provided on one side of the housing 1. The display screen 12 adopts a liquid crystal screen, and the color liquid crystal screen displays the gas detection results. A button is provided on one side of the display screen 12, and a Chinese operation menu is displayed in the display screen 12, which is easy to operate.

[0035] On the other hand, the embodiment of the present application discloses a detection system of an interconnected portable gas detector, which is integrated into the above-mentioned interconnected portable gas detector. Figure 3 A detection system of an interconnected portable gas detector includes a central operation module 3, a control execution module 6, a gas detection module 4, a wireless transmission module 9, an alarm module 81, a display module 8, a timing module 7, a typing module 2, a self-test module 5, and a life algorithm module 93.

[0036] The gas detection module 4 detects the gas inhaled at the air inlet 11, and sends the gas component analysis result to the central operation module 3; in this embodiment, based on the function of the gas detection module 4, a suitable sensor is selected. Specifically, the gas detection module 4 is in an environment where combustible gas, oxygen, toxic gas, and carbon dioxide need to be detected. Among them, harmful gases generally detect carbon monoxide and hydrogen sulfide gas, and combustible gases include methane, isobutane, etc., and a low-power non-dispersive infrared sensor is used. Oxygen uses a lead-free oxygen sensor, and harmful gases use an electrochemical sensor to improve the safety of portable gas detector detection. Carbon dioxide is relatively stable in nature, and a traditional carbon dioxide detection sensor can be used. In addition, in addition to analyzing the harmful gas content inside the gas, the gas detection module 4 also needs to detect moisture and humidity, and a humidity sensor is used to detect the humidity inside the space; for the convenience of distinction, the functional components of the gas detection module 4 are split in this embodiment, and the humidity sensor for detecting moisture and humidity and its control and operation circuits are divided into a moisture detection unit 42, and the functional components of the gas detection module 4 for detecting combustible gas, oxygen, toxic gas, and carbon dioxide are divided into a gas detection unit 41. The moisture detection unit 42 and the gas detection unit 41 send the detection results to the central computing module 3 .

[0037] The central operation module 3 stores gas safety values ​​and instruction files for detection items. The central operation module 3 receives or retrieves the gas analysis results of the gas detection module 4 in real time, calculates and compares the safety values, and retrieves and runs relevant instruction files according to the results. Specifically, the central operation module 3 receives the various detection results of the above-mentioned gas detection module 4, calculates and analyzes the concentration data and concentration range of each component in the gas, stores the data, runs different relevant instruction files for gas data in different concentration ranges, types of harmful gases, and types of dangerous gases, generates instructions, and sends the instructions to the display module 8, the control execution module 6, and the alarm module 81.

[0038] The control execution module 6 includes the control circuit of the micro air pump 14, the power supply circuit of the portable gas detector and other operation-related circuit modules. The control execution module 6 runs. After the control is turned on, the control execution module 6 controls the operation of the micro air pump 14 according to the instructions of the central operation module 3, and absorbs the gas to be tested at a specific gas absorption speed. The gas enters the portable gas detector through the air inlet 11 after being filtered, and is collected and detected by each gas detection module 4.

[0039] The alarm module 81 is mainly used to control the control circuit of the buzzer 16 and control the operation of the buzzer 16. The alarm module 81 is connected to the central operation module 3 to receive and read the instructions of the central operation module 3. After the central operation module 3 calculates and analyzes specific data, the central operation module 3 sends relevant instruction information to the alarm module 81. The alarm module 81 controls the buzzer 16 to make a sound, so that the portable gas detector sounds an alarm to remind the user.

[0040] The display module 8 receives instructions from the central operation module 3, displays the gas analysis results of the central operation module 3, and when dangerous gas is present, it cooperates with the alarm of the alarm module 81 to make the indicator number flash, prompting the user that there is currently a danger; in addition, the coordination between the display module 8 and the alarm module 81 is also reflected in the different reminder levels; the central operation module 3 internally marks the calculation results according to the actual harmful gas concentration level, and according to the harmful gas concentration level, the central operation module 3 makes different levels of reminders, and the buzzer 16 emits different levels of sound reminders.

[0041] Reference Figure 3The wireless transmission module 9 is connected to the central operation module 3, and includes a Bluetooth unit 92 and a Lora unit 91. The Bluetooth unit 92 is specifically used to connect to the user's mobile phone or other mobile devices that support the Bluetooth wireless transmission module 9, and is used for the data and command transmission between the portable gas sensor and the mobile device; in addition, the wireless transmission module 9 can also be equipped with a Lora communication module, which can communicate data with other controllers in a limited space. Bluetooth and Lora communication modules are existing technologies and are relatively common and will not be elaborated on. The Lora unit 91 includes a wireless Internet access module. Under the existing technology, this embodiment preferentially adopts 3 / 4G communication for wireless remote transmission of instructions and gas analysis data, and is connected to the control terminal platform, that is, the terminal management personnel can retrieve the detection data of the connected portable gas detector through the terminal platform, and can also retrieve its instruction history, and obtain other important backup information such as historical detection data; specifically, the wireless transmission module 9 is connected to the central operation module 3, which is used for data and signal connection with the control terminal, especially signal transmission. Before the on-site gas detection, the wireless transmission module 9 is operated to connect the gas detector and the control terminal; the central operation module 3 synchronously transmits the detection results and alarm signals to the control terminal, and the control terminal receives the alarm signal and alarms accordingly. The management personnel at the control terminal can also obtain the on-site gas detection situation in real time.

[0042] Reference Figure 3 The input module 2 is connected to the central operation module 3, providing a way for technicians to modify the instruction file and a way for users to change the operating state of the gas detector. The user inputs the instruction to cover the native instruction of the central operation module 3; specifically, the technician modifies the data file through the input module 2 according to the different use occasions of the portable gas detector, rewrites the gas safety value inside the central operation module 3, or changes the gas concentration level of the alarm module 81 to control the buzzer 16 to alarm. If the actual detection space is small, low concentrations of harmful gases or flammable gases have a risk of harm to the staff, and the technician lowers the alarm value of the gas concentration safety to improve the alarm sensitivity of the gas detector.

[0043] It should be noted that in addition to the wireless data transmission method of the wireless transmission module 9 mentioned above, data communication in actual application also supports wired data export. Specifically, in this embodiment, considering the problem of waterproof and dustproof sealing protection, data export is mainly achieved by magnetic data transmission. Therefore, the central operation module 3 should include a storage unit, and the data transmission interface should be integrated in the magnetic charging seat 13. When exporting data, the user connects the magnetic data cable to the computer or other control equipment to export alarm records, operation records and data records for subsequent use.

[0044] Reference Figure 3The self-check module 5 is connected to the central operation module 3 and the control execution module 6. The self-check module 5 is automatically turned on and runs first to check the remaining power of the gas detector and the operating status of all the electric control components inside the gas detector. Specifically, the self-check module 5 sends an electrical signal to the control circuit of the control execution module 6 to detect the integrity of the control circuit and ensure the stable operation of the gas detector.

[0045] Reference Figure 3 The timing module 7 is connected to the input module 2 and the control execution module 6 to receive the instruction of the input module 2; the timing module 7 includes a clock signal generator to generate a periodic clock signal to put the control execution module 6 in a periodic operation state. Therefore, the portable gas detector is set to the timing mode, and the construction personnel place the portable gas detector near the gas source and operate it at intervals of a preset time period to achieve automatic detection and alarm.

[0046] Reference Figure 3 The life algorithm module 93 is connected to the central operation module 3, the moisture detection unit 42, and the gas detection unit 41 to collect the residual amount of reaction gas in the gas sensor inside the moisture detection module 42 and the gas detection unit 41. In actual application, the gas residual amount can be measured by measuring the air pressure in the reaction chamber inside the gas sensor. The life algorithm module 93 calculates the collected data and sends the calculation result to the central operation module 3. The central operation module 3 processes the calculation result of the life algorithm module 93 to obtain the service life of the gas detector and displays it through the display module 8.

[0047] The implementation principle of the detection system of an interconnected portable gas detector in this embodiment is: by integrating the central operation module 3, the gas detection module 4, the control execution module 6 and the display module 8, the automatic processing and real-time display of the portable gas detector are realized, and the detection accuracy and response speed are improved; by integrating the central operation module 3, the gas detection module 4, the control execution module 6 and the display module 8, the automatic processing and real-time display of the portable gas detector are realized; through the combination of the input module 2 and the timing module 7, the operation of the gas detector is more flexible and convenient, which meets the timing trigger function under different usage requirements and improves the convenience and functionality of the detector; through the introduction of the self-test module 5, the gas detector can automatically detect the working status of each component when it is turned on, thereby improving the reliability and stability of the detector.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An interconnected portable gas detector, comprising a housing (1), wherein the housing (1) is provided with an air inlet (11), characterized in that: Also includes: A waterproof structure, arranged inside the housing (1) at one end close to the air inlet (11); A micro air suction pump (14) is arranged inside the housing (1), and an air inlet (11) of the micro air suction pump (14) is connected to the air inlet (11); A magnetic charging seat (13) integrated on one side edge of the housing (1); A buzzer (16) is arranged inside the housing (1) and sounds under a specific state.

2. A detection system for an interconnected portable gas detector as claimed in claim 1, characterized in that: It comprises a central operation module (3), a gas detection module (4), a control execution module (6), and a display module (8); The control execution module (6) includes a control circuit of the micro air suction pump (14) to control the operation of the micro air suction pump (14); The gas detection module (4) detects the gas inhaled through the gas inlet (11), and sends the gas composition analysis result to the central operation module (3); The central operation module (3) stores gas safety values ​​and instruction files of the detection items. The central operation module (3) receives or retrieves the gas analysis results of the gas detection module (4) in real time, calculates and compares the safety values, retrieves and runs the relevant instruction files according to the results, and generates instructions to send to the control execution module (6) and the display module (8); The display module (8) receives instructions from the central operation module (3), displays the gas analysis results of the central operation module (3), and issues an alarm when dangerous gas is present.

3. A detection system of interconnected portable gas detectors according to claim 2, characterized in that: Also includes; The alarm module (81) includes a control circuit of the buzzer (16) for controlling the operation of the buzzer (16). The alarm module (81) is connected to the central operation module (3), receives and reads instructions from the central operation module (3), and issues an alarm when dangerous gas is detected.

4. The detection system of an interconnected portable gas detector according to claim 2, characterized in that: It also includes a wireless transmission module (9); The wireless transmission module (9) is connected to the central operation module (3) to upload the analysis and numerical calculation results of the central operation module (3) to the control terminal; the wireless transmission module (9) is equipped with instant messaging capability to wirelessly connect to other mobile devices.

5. The detection system of interconnected portable gas detectors according to claim 2, characterized in that: The gas detection module (4) comprises: A gas detection unit (41), wherein the gas detection unit (41) analyzes the components of the collected gas and distinguishes oxygen, carbon dioxide, combustible gas, and toxic gas; A moisture detection unit (42), wherein the moisture detection unit (42) analyzes the moisture in the collected gas, sends the collected information to the central operation module (3), and calculates the humidity.

6. The detection system of interconnected portable gas detectors according to claim 2, characterized in that: Also included is a typing module (2); The input module (2) provides a way for technicians to modify instruction files and a way for users to change the operating status of the gas detector. The user inputs instructions to overwrite the original instructions of the central operation module (3).

7. The detection system of interconnected portable gas detectors according to claim 2, characterized in that: comprising a self-checking module (5); The self-check module (5) is connected to the central operation module (3) and the control execution module (6). The self-check module (5) is automatically turned on and runs preferentially to check the remaining power of the gas detector and the operating status of the micro suction pump (14). The self-check module (5) sends an electrical signal to the control circuit of the control execution module (6) to detect the integrity of the control circuit.

8. The detection system of interconnected portable gas detectors according to claim 6, characterized in that: Also includes: A timing module (7), wherein the timing module (7) is connected to the input module (2) and the control execution module (6) and receives instructions from the input module (2); the timing module (7) includes a clock signal generator that generates a periodic clock signal to put the control execution module (6) in a periodic operation state.

9. The interconnected portable gas detector and detection system according to claim 2, characterized in that: Also includes: The life algorithm module (93) is connected to the central operation module (3) and the gas detection module (4). The life algorithm module (93) stores algorithm instructions written by a technician. The operating time and the residual amount of reaction gas in the gas detection module (4) are collected periodically, and the collected data are input into the algorithm instructions to estimate the service life of the gas detector.

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