Multi-mode integrated respiratory protection helmet system and use method

Abstract

The invention discloses a multi-mode integrated respiratory protection helmet system and a using method, the multi-mode integrated respiratory protection helmet system comprises a protection helmet body and an air supply device, an electroencephalogram collection unit is installed in the protection helmet body, the air supply device comprises a filtering air supply unit, an air expiration air supply unit and an automatic switching cavity, and the multi-mode integrated respiratory protection helmet system further comprises a control unit and a power supply unit. The electroencephalogram acquisition unit is used for adopting electroencephalogram signals of an operator, identifying the intention of the operator through the control unit, and driving the protective helmet to switch a filtering air supply mode and an air expiration air supply mode according to the intention of the operator, so that manual operation of the operator is not needed, and the problem that the air expiration and filtering integrated protective helmet is inconvenient to use and operate is effectively solved; and the quick control capability of the protective helmet in the working environment is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of respiratory protection, and in particular to a multi-mode integrated respiratory protection helmet system and a use method thereof. Background Art

[0002] The current protective helmets mainly achieve the purpose of integrated respiratory protection for the head and face by connecting to a single filter air supply unit or air respirator. Single-mode respiratory protection helmets can no longer meet the needs of performing tasks in complex contaminated environments. There are currently no multi-mode integrated respiratory protection helmets on the market. Multi-mode integrated respiratory protection helmets are mainly protective helmets that integrate filter air supply mode and air respiration supply mode to meet the respiratory protection needs of multiple protection levels for the head and face. The protective helmet is connected to the filter air supply unit and air respirator carried on the back to enter the contaminated environment to perform tasks, and the filter air supply working mode or the air respirator working mode is switched according to the degree of pollution in the contaminated environment. The current multi-mode integrated filtering air supply mode and air respirator mode are switched mainly through manual switching. Before entering the contaminated environment for operation, it is necessary to pre-judge the use environment and switch the corresponding working mode according to the use environment. However, this method has potential risks. For example, if the working environment of the operator changes, the operator cannot identify and switch in time, which will pose a threat to the life safety of the operator. At the same time, when the filtering air supply device and air respirator carried on the back need to switch the working mode or manually adjust the air volume of the air supply device, it is also very inconvenient to use and operate, especially when combined with protective clothing for full body protection, it is particularly difficult to use and operate. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to solve the problems existing in the above-mentioned background technology, and to provide a multi-mode integrated respiratory protection helmet system, which adopts the operator's EEG signal through the EEG acquisition unit, identifies the operator's intention through the control unit, and drives the protective helmet system to switch between filtered air supply and air-exhalation air supply mode according to the operator's intention, without the need for manual operation by the operator, effectively solving the inconvenience of using the air-exhalation filtering integrated protective helmet, and greatly improving the quick control capability of the protective helmet in the working environment.

[0004] Another technical problem to be solved by the present invention is to provide a method for using a multi-mode integrated respiratory protection helmet system.

[0005] In order to achieve the above-mentioned technical features, the purpose of the present invention is achieved as follows: a multi-mode integrated respiratory protection helmet system, comprising a protective helmet body and an air supply device, an electroencephalogram (EEG) acquisition unit is installed inside the protective helmet body, the air supply device comprises a filtering air supply unit, an air-exhalation air supply unit and an automatic switching cavity, the air outlet of the filtering air supply unit is connected to the air supply air duct of the automatic switching cavity, the air outlet of the air-exhalation air supply unit is connected to the air-exhalation air duct of the automatic switching cavity, the air supply air duct and the air-exhalation air supply solenoid valve are respectively installed with a filtering air supply solenoid valve and an air-exhalation air supply solenoid valve, and the air outlet of the automatic switching cavity is connected to the air supply interface of the protective helmet body through an air supply pipeline; further comprising a control unit and a power supply unit, the control unit being respectively connected to the filtering air supply unit, the air-exhalation air supply unit, the EEG acquisition unit, the filtering air supply solenoid valve and the air-exhalation air supply solenoid valve by wired or wireless means, and the power supply unit being electrically connected to the control unit, the filtering air supply unit, the air-exhalation air supply unit, the EEG acquisition unit, the filtering air supply solenoid valve and the air-exhalation air supply solenoid valve.

[0006] The EEG acquisition unit includes EEG electrodes, a signal amplification and conditioning module, a microcontroller and a communication module. A buffer layer is fixedly installed inside the protective helmet body, and a plurality of electrode sockets are distributed in the buffer layer. The EEG electrodes are installed on the electrode sockets, and the electrode sockets are electrically connected to the signal amplification and conditioning module through wires. The signal amplification and conditioning module is electrically connected to the microcontroller, and the microcontroller is electrically connected to the communication module. The communication module is communicatively connected to the control unit.

[0007] The filtering air supply unit includes a filtering air supply cavity, a micro DC fan and an exhaust gas monitoring unit. At least one gas filter canister is installed on the air inlet port of the filtering air supply cavity, and a micro DC fan is installed on the air outlet port of the filtering air supply cavity. The air outlet of the micro DC fan is connected to the air supply air duct through the filtering air supply pipeline; the exhaust gas monitoring unit is installed in the filtering air supply cavity, and the exhaust gas monitoring unit is electrically connected to the control unit.

[0008] The air-exhalation air supply unit includes an air respirator, an air-exhalation air supply pipeline is installed at one end of the air respirator's cylinder pressure reducer, the air-exhalation air supply pipeline is connected to the air-exhalation duct, and a cylinder pressure detection module is installed at the other end of the cylinder pressure reducer, and the cylinder pressure detection module is electrically connected to the control unit.

[0009] It also includes an environmental monitoring module, which is installed on the protective helmet body or the air supply device and is electrically connected to the control unit.

[0010] It also includes a display unit, which includes a display driving module and a display module. The display module is electrically connected to the display driving module, and the display driving module is electrically connected to the control unit.

[0011] The control unit includes a first microprocessing module and a second microprocessing module. The first microprocessing module is used to run EEG stimulation software, send tag data, and collect sensor signals. The second microprocessing module is used to run EEG processing algorithms and give corresponding control instructions to drive peripherals.

[0012] The filtered air supply solenoid valve and the air-breathing air supply solenoid valve are electrically connected to the drive module respectively, the drive module, the micro DC fan and the exhaust gas monitoring unit are electrically connected to the fan switching control module respectively, and the fan switching control module is electrically connected to the second microprocessor module through the communication interface.

[0013] The power supply unit includes a power supply module and a plurality of voltage converters. The power supply module is electrically connected to each voltage converter, and each voltage converter is electrically connected to an electrical component that needs power supply.

[0014] The method for using the multi-mode integrated respiratory protection helmet system comprises the following steps: Step 1: When in use, the signal amplification and conditioning module filters, amplifies, and performs analog-to-digital conversion on the EEG electrode signal; Step 2: The microcontroller reads the EEG electrode signal; Step 3: The fan switching control module reads the exhaust gas detection data of the exhaust gas monitoring unit, the second microprocessor module obtains the exhaust gas detection data read by the fan switching control module, and the second microprocessor module sends the exhaust gas detection data to the first microprocessor module; Step 4: The first microprocessor module reads the oxygen and toxic and harmful gas sensor data of the environmental monitoring module, and the first microprocessor module obtains the cylinder pressure data of the air respirator cylinder pressure detection module; Step 5: The first microprocessor module controls the display driver module to drive the display module to display the sensor data, exhaust gas detection data, and cylinder pressure data of the environmental monitoring module; the first microprocessor module controls the display driver module to drive the display module to display multiple visual evoked stimulation interfaces that flash at different frequencies, each visual evoked stimulation interface that flashes at different frequencies corresponds to the control action of switching between filtered air supply and air call and the air supply air volume; Step 6: The first microprocessor module transmits the label data transmitted from the visual evoked stimulation interface software, and the first microprocessor module transmits the label data to the microcontroller; Step 7. The microcontroller sends the label data and the EEG electrode signal to the second microprocessor module through the communication module. The second microprocessor module performs feature extraction and classification on the received data and converts the classified results into corresponding control instructions. The operator makes auxiliary decisions based on actual needs or based on the environment displayed by the display module and the gas cylinder pressure data. When the displayed gas cylinder pressure data is too low, the corresponding air-to-filter air supply mode control instruction is obtained through the corresponding visual induced stimulation interface of the filtered air supply and air-to-air breathing switching. When the displayed oxygen concentration is too low or the exhaust gas detects toxic and harmful gas concentration data or the toxic and harmful gas concentration data is too high, the corresponding filtered air supply mode control instruction is obtained through the corresponding visual induced stimulation interface of the air-to-filter air supply switching. When in the filtered air supply mode, if the operator feels that the air volume is too large or too small, the corresponding filtered air supply air volume control instruction is obtained through the corresponding visual induced stimulation interface of the filtered air supply. Step 8. The second microprocessor module sends the control instruction to the fan switching control module. The fan switching control module parses the control instruction and drives the micro DC fan to adjust the air supply volume according to the control instruction, or controls the drive module to drive the filter air supply solenoid valve and the air-breathing air supply solenoid valve to perform corresponding actions, switching the filter air supply mode or the air-breathing mode; when the air-breathing to filter air supply mode control instruction is parsed, the fan switching control module controls the drive module to open the filter air supply solenoid valve and close the air-breathing air supply solenoid valve; when the air-breathing to filter air supply mode control instruction is parsed, the fan switching control module closes the filter air supply solenoid valve, opens the air-breathing air supply solenoid valve, and drives the micro DC fan to stop running; when the air-breathing air volume control instruction is parsed, the fan switching control module adjusts the speed of the micro DC fan to increase or decrease the air supply volume.

[0015] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: 1. The protective helmet of the present invention is designed to be worn on the worker's head, and the air supply device adopts a backpack-style structure, which the worker can carry on his shoulders for easy movement. The EEG acquisition unit is used to use the worker's EEG signals, and the control unit identifies the worker's intention. According to the worker's intention, the protective helmet switches between filtered air supply and air-breathing air supply mode, eliminating the need for manual operation by the worker. This effectively solves the inconvenience of using integrated air-breathing and filtering protective helmets and significantly improves the quick control capability of the protective helmet in the working environment.

[0016] 2. The present invention can identify the intention of the operator based on the operator's brain electrical signals, and drive the protective helmet to switch between the filtering air supply mode and the air-breathing air supply mode according to the operator's intention. At the same time, in the air supply mode, the filtering air supply volume can be automatically adjusted according to the identified brain electrical signals, without the need for manual operation by the operator, effectively solving the inconvenience of using the air-breathing and filtering integrated protective helmet, and greatly improving the quick control capability of the protective helmet in the working environment.

[0017] 3. The present invention monitors the contaminated environment, the status of the air respirator, and the usage status of the filter element, and can provide data on the contaminated environment, the remaining pressure of the air respirator, and the penetration status of the filter element to the operators for auxiliary decision-making, ensuring that the operators can complete the work mode switching more accurately and effectively protect the lives of the operators.

[0018] 4. The present invention adopts an integrated power supply, which integrates the power module on the back panel and supplies power to the entire system through a centralized power supply. There is no need to set up a separate power supply at each module setting point, and the structure and usage are simple. 5. The present invention integrates filtering and air supply, air respirator, automatic switching, power supply and brain electroencephalogram processing components through the back panel, which has a high degree of integration and reduces the head load, making it easier to wear the protective helmet. 6. The present invention adopts a modular design of the EEG control system of a multi-mode integrated respiratory protective helmet, which has a simple structure, does not require manual operation, is easy to use, and effectively solves the inconvenience of using and operating the air-breathing filtering multi-mode integrated protective helmet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 Schematic diagram of the interior of the protective helmet of the present invention.

[0022] Figure 3 This is the overall circuit structure diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the interior of the EEG collection cavity of the present invention.

[0024] Figure 5 This is a schematic diagram of the interior of the processing control cavity of the present invention.

[0025] Figure 6 This is a schematic diagram of the interior of the automatic switching cavity of the present invention.

[0026] Reference numerals: Protective helmet body 1, buffer layer 2, electrode socket 3, EEG electrode 4, signal amplification and conditioning module 5, microcontroller 6, communication module 7, EEG acquisition cavity 8, first microprocessor module 9, wireless communication module 10, display driver module 11, display module 12, second microprocessor module 13, communication interface 14, processing control cavity 15, air supply device 16, filter air supply cavity 17, fan switching control module 18, micro DC fan 19, air supply pipeline 20, filter air supply pipeline 21, air-exhalation air supply pipeline 22, automatic switching cavity 23, air-exhalation duct 24, air supply duct 25, filter air supply solenoid valve 26, air-exhalation air supply solenoid valve 27, drive module 28, first voltage conversion module 29, second voltage conversion module 30, third voltage conversion module 31, power supply module 32, air respirator 33, environmental monitoring module 34, exhaust gas monitoring unit 35. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0029] Example 1: See also Figures 1 to 6 A multi-mode integrated respiratory protection helmet system includes a protective helmet body 1 and an air supply device 16. The protective helmet body 1 is internally installed with an electroencephalogram (EEG) acquisition unit. The air supply device 16 includes a filter air supply unit, an air-exhalation air supply unit, and an automatic switching cavity 23. The air outlet of the filter air supply unit is connected to the air supply duct 25 of the automatic switching cavity 23, and the air outlet of the air-exhalation air supply unit is connected to the air-exhalation duct 24 of the automatic switching cavity 23. Figure 6The air supply duct 25 and the air exhalation duct 24 are respectively installed with a filtering air supply solenoid valve 26 and an air exhalation air supply solenoid valve 27, and the air outlet of the automatic switching cavity 23 is connected to the air supply interface of the protective helmet body 1 through the air supply pipeline 20; it also includes a control unit and a power supply unit, and the control unit is respectively connected to the filtering air supply unit, the air exhalation air supply unit, the EEG acquisition unit, the filtering air supply solenoid valve 26 and the air exhalation air supply solenoid valve 27 by wired or wireless means, and the power supply unit is electrically connected to the control unit, the filtering air supply unit, the air exhalation air supply unit, the EEG acquisition unit, the filtering air supply solenoid valve 26 and the air exhalation air supply solenoid valve 27.

[0030] The protective helmet body 1 is designed to be worn on the worker's head, and the air supply device 16 is a backpack-style structure that the worker can carry on their shoulders for easy movement. The EEG acquisition unit is used to use the worker's EEG signals to identify the worker's intention through the control unit. According to the worker's intention, the protective helmet switches between filtered air supply and air-exhaled air supply mode, eliminating the need for manual operation by the worker. This effectively solves the inconvenience of using integrated air-exhaled and filtered protective helmets and significantly improves the quick control capabilities of the protective helmet in the working environment.

[0031] Specifically, the protective helmet body 1 is a full-face helmet, with the breathing mask integrated into the helmet body to form a fully enclosed structure. A spring-loaded exhalation valve seat for filtered air exhalation mode is installed on the helmet face. Adjusting the spring travel of the exhalation valve seat by adjusting the exhalation valve seat resistance changes the exhalation valve operating mode. An air supply port is installed on the helmet face, with a built-in inhalation valve. The air supply device 16 is worn on both shoulders.

[0032] In this embodiment, switching between air-breathing and filtered air-supply modes is accomplished via the filtered air supply solenoid valve 26 and the air-breathing air supply solenoid valve 27. When filtered air supply is required, the filtered air supply solenoid valve 26 is controlled to open, while the air-breathing air supply solenoid valve 27 is controlled to close. After being filtered by the filtered air supply unit, the air passes through the filtered air supply solenoid valve 26 and the air supply line 20 and is then delivered into the protective helmet body 1. When air-breathing air supply is required, the filtered air supply solenoid valve 26 is controlled to close, while the air-breathing air supply solenoid valve 27 is controlled to open. The gas in the air-breathing air supply unit's gas cylinder passes through the air-breathing air supply solenoid valve 27 and the air supply line 20 and is then delivered into the protective helmet body 1.

[0033] See also Figure 2The EEG acquisition unit includes an EEG electrode 4, a signal amplification and conditioning module 5, a microcontroller 6 and a communication module 7. A buffer layer 2 is fixedly installed inside the protective helmet body 1, and a plurality of electrode sockets 3 are distributed in the buffer layer 2. The EEG electrode 4 is installed on the electrode socket 3, and the electrode socket 3 is electrically connected to the signal amplification and conditioning module 5 through a wire. The signal amplification and conditioning module 5 is electrically connected to the microcontroller 6, the microcontroller 6 is electrically connected to the communication module 7, and the communication module 7 is communicatively connected to the control unit.

[0034] The head is cushioned by the cushioning layer 2. The cushioning layer 2 is designed to conform to the shape of the helmet and is made of polystyrene material. When worn, it can wrap around the top and back of the operator's head.

[0035] The EEG electrodes are connected via the electrode socket 3. The electrode socket 3 is a hollow cylindrical structure with a ring-shaped metal female socket inside the cylinder, which is connected to the signal line.

[0036] The EEG electrodes 4 are used to collect EEG signals of the operator. The EEG electrodes 4 are a group of 16 EEG electrodes, which are dispersedly arranged on the top and rear of the buffer layer 2.

[0037] The EEG signal amplification, filtering and analog-to-digital conversion are completed by the signal amplification and conditioning module 5. The signal amplification and conditioning module 5 includes a multi-channel signal amplification and high-precision AD module.

[0038] The microcontroller 6 completes EEG data processing, EEG data and label aggregation and transmission.

[0039] See also Figure 1 The filtering air supply unit includes a filtering air supply cavity 17, a micro DC fan 19 and an exhaust gas monitoring unit 35. At least one gas filter canister is installed on the air inlet port of the filtering air supply cavity 17, and a micro DC fan 19 is installed on the air outlet port of the filtering air supply cavity 17. The air outlet of the micro DC fan 19 is connected to the air supply duct 25 through the filtering air supply pipeline 21; the exhaust gas monitoring unit 35 is installed in the filtering air supply cavity 17, and the exhaust gas monitoring unit 35 is electrically connected to the control unit.

[0040] Filtered air is supplied via a filter air supply chamber 17 connected to a canister. This chamber 17 is a flat, dual-canister structure with two canister ports and an air outlet. The canister is threaded onto the canister ports. A miniature DC blower 19 is installed at the air outlet.

[0041] The filtered clean air is extracted by the micro DC fan 19 and supplied to the protective helmet body 1 .

[0042] The exhaust gas monitoring unit 35 is used to monitor the exhaust gas condition of the filter element. If the exhaust gas concentration is detected, it is determined that the filter element has been penetrated. The exhaust gas monitoring unit 35 is equipped with a variety of toxic and harmful gas detection sensors.

[0043] See also Figure 1 The air-exhalation supply unit includes an air respirator 33. An air-exhalation supply pipeline 22 is installed at one end of the cylinder pressure reducer of the air respirator 33. The air-exhalation supply pipeline 22 is connected to the air-exhalation duct 24. A cylinder pressure detection module is installed at the other end of the cylinder pressure reducer. The cylinder pressure detection module is electrically connected to the control unit.

[0044] The protective helmet is provided with a closed breathing environment through the air respirator 33. The air respirator 33 comprises a single gas cylinder, a pressure reducing valve and a gas cylinder pressure monitoring module. In this embodiment, the gas cylinder pressure monitoring module adopts a wireless pressure monitoring module.

[0045] Furthermore, the helmet further includes an environmental monitoring module 34, which is mounted on the protective helmet body 1 or the air supply device 16 and is electrically connected to the control unit. The environmental monitoring module 34 has built-in oxygen and multiple toxic and hazardous gas sensing units to detect the oxygen concentration and toxic and hazardous gas concentration in the air.

[0046] In this embodiment, see Figure 1 The environmental monitoring module 34 is installed on the outer wall of the protective helmet body 1.

[0047] Further, see Figure 1 、 3 , further comprising a display unit, wherein the display unit comprises a display driving module 11 and a display module 12, the display module 12 is electrically connected to the display driving module 11, and the display driving module 11 is electrically connected to the control unit.

[0048] The display module 12 displays the EEG stimulation interface, environmental data, cylinder pressure data, and exhaust data. The display module 12 uses a display screen with a screen refresh rate of 120Hz. The display module 12 is installed at the eye position of the protective helmet body 1, see Figure 1 .

[0049] See also Figure 3 The control unit includes a first microprocessing module 9 and a second microprocessing module 13. The first microprocessing module 9 is used to run the EEG stimulation software, tag data transmission and sensor signal collection. The second microprocessing module 13 is used to run the EEG processing algorithm and give corresponding control instructions to drive peripherals.

[0050] Specifically, the second microprocessor module 13 is electrically connected to the communication module 7 and the first microprocessor module 9 , and the second microprocessor module 13 is electrically connected to the communication interface 14 .

[0051] The first microprocessor module 9 and the second microprocessor module 13 contain a high-performance processor and its peripheral circuits, a storage module, and a communication conversion module.

[0052] See also Figure 3 The filtered air supply solenoid valve 26 and the air-exhaled air supply solenoid valve 27 are electrically connected to the drive module 28 respectively, the drive module 28, the micro DC fan 19 and the exhaust gas monitoring unit 35 are electrically connected to the fan switching control module 18 respectively, and the fan switching control module 18 is electrically connected to the second micro-processing module 13 through the communication interface 14.

[0053] See also Figure 3 The power supply unit includes a power module 32 and multiple voltage converters. The power module 32 is electrically connected to each voltage converter, and each voltage converter is electrically connected to an electrical component that needs power supply.

[0054] In this embodiment, combined with Figure 3 The voltage converter includes a first voltage conversion module 29, a second voltage conversion module 30, and a third voltage conversion module 31. The first voltage conversion module 29 is electrically connected to the signal amplification and conditioning module 5, the communication module 7, and the microcontroller 6 to provide power; the second voltage conversion module 30 is electrically connected to the first microprocessor module 9, the wireless communication module 10, the display driver module 11, and the environmental monitoring module 34 to provide power; and the third voltage conversion module 31 is electrically connected to the second microprocessor module 13, the communication interface 14, the fan switching control module 18, and the driver module 28 to provide power.

[0055] The first voltage conversion module 29 , the second voltage conversion module 30 , and the third voltage conversion module 31 are electrically connected to the power supply module 32 , respectively.

[0056] The power module 32 includes a power protection module and a large-capacity rechargeable battery, and is provided with a charging interface.

[0057] In this embodiment, see Figure 2 、 4 The protective helmet body 1 is internally provided with an EEG acquisition cavity 8. The signal amplification and conditioning module 5, microcontroller 6, communication module 7, and first voltage conversion module 29 are disposed within the EEG acquisition cavity 8. The first microprocessor module 9, wireless communication module 10, display driver module 11, and second voltage conversion module 30 are disposed inside the protective helmet body 1. An environmental monitoring module 34 is also disposed within the protective helmet body 1. The wireless communication module 10 is a Bluetooth module. The communication module 7 is a two-way 485 module.

[0058] The air respirator 33, the filter air supply cavity 17, the automatic switching cavity 23, the power module 32, and the processing control cavity 15 are arranged on the air supply device 16. Figure 1 、 5 The second microprocessor module 13 , the communication interface 14 , and the third voltage conversion module 31 are disposed inside the processing control cavity 15 .

[0059] Example 2: The method for using the multi-mode integrated respiratory protection helmet system comprises the following steps: Step 1: When in operation, the signal amplification and conditioning module 5 filters, amplifies, and performs analog-to-digital conversion on the signal of the EEG electrode 4.

[0060] Step 2: The microcontroller 6 reads the EEG electrode signals.

[0061] Step 3: The fan switching control module 18 reads the exhaust gas detection data from the exhaust gas monitoring unit 35 , the second microprocessor module 13 obtains the exhaust gas detection data read by the fan switching control module 18 , and the second microprocessor module 13 sends the exhaust gas detection data to the first microprocessor module 9 .

[0062] Step 4: The first microprocessor module 9 reads the oxygen and toxic and harmful gas sensor data of the environmental monitoring module 34 , and the first microprocessor module 9 reads the cylinder pressure data of the wireless cylinder pressure monitoring module of the air respirator 33 through the wireless communication module 10 .

[0063] Step 5: The first microprocessor module 9 controls the display driver module 11 to drive the display module 12 to display the sensor data, exhaust gas detection data and cylinder pressure data of the environmental monitoring module 34; the first microprocessor module 9 controls the display driver module 11 to drive the display module 12 to display multiple visual induced stimulation interfaces flashing at different frequencies, and each visual induced stimulation interface flashing at a different frequency corresponds to different control actions such as filtering, air supply, air call switching and air supply volume.

[0064] Step 6: The first microprocessor module 9 transmits the label data transmitted from the visual evoked stimulation interface software, and the first microprocessor module 9 transmits the label data to the microcontroller 6.

[0065] Step 7: The microcontroller 6 sends the label data and the EEG electrode signal to the second microprocessor module 13 through the communication module 7. The second microprocessor module 13 performs feature extraction and classification on the received data and converts the classified results into corresponding control instructions. The operator can make auxiliary decisions based on actual needs or based on the environment displayed by the display module 12 and the gas cylinder pressure data. When the displayed gas cylinder pressure data is too low, the corresponding air-to-filter air supply mode control instruction can be obtained through the corresponding visual induced stimulation interface of the filter air supply and air-to-air breathing switching. When the displayed oxygen concentration is too low or the exhaust gas detects toxic and harmful gas concentration data or the toxic and harmful gas concentration data is too high, the corresponding filter air supply mode control instruction can be obtained through the corresponding visual induced stimulation interface of the air-to-filter air supply switching. When in the filter air supply mode, if the operator feels that the air volume is too large or too small, the corresponding filter air supply air volume control instruction can be obtained through the corresponding visual induced stimulation interface of the filter air supply.

[0066] Step 8: The second microprocessor module 13 sends the control instruction to the fan switching control module 18. The fan switching control module 18 parses the control instruction and drives the micro DC fan 19 to adjust the air supply volume according to the control instruction, or controls the drive module 28 to drive the filter air supply solenoid valve 26 and the air-breathing air supply solenoid valve 27 to perform corresponding actions, switching the filter air supply mode or the air-breathing mode; when the air-breathing to filter air supply mode control instruction is parsed, the fan switching control module 18 controls the drive module 28 to open the filter air supply solenoid valve 26 and close the air-breathing air supply solenoid valve 27; when the air-breathing to filter air supply mode control instruction is parsed, the fan switching control module 18 closes the filter air supply solenoid valve 26, opens the air-breathing air supply solenoid valve 27, and drives the micro DC fan 19 to stop running; when the air supply volume control instruction is parsed, the fan switching control module 18 drives the micro DC fan 19 to increase or decrease the air supply volume.

[0067] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Any modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-mode integrated respiratory protective helmet system, comprising a protective helmet body (1) and an air supply device (16), characterized in that: The protective helmet body (1) is internally installed with an electroencephalogram acquisition unit. The air supply device (16) includes a filter air supply unit, an air exhalation air supply unit, and an automatic switching cavity (23). The air outlet of the filter air supply unit is connected to the air supply air duct (25) of the automatic switching cavity (23), and the air outlet of the air exhalation air supply unit is connected to the air exhalation duct (24) of the automatic switching cavity (23). The air supply duct (25) and the air exhalation duct (24) are respectively installed with a filter air supply solenoid valve (26) and an air exhalation air supply solenoid valve (27). The automatic switching cavity (23) is connected to the air supply duct (25) and the air exhalation duct (24). The air outlet of the cavity (23) is connected to the air supply interface of the protective helmet body (1) through an air supply pipeline (20); and the protective helmet body (1) further includes a control unit and a power supply unit. The control unit is connected to the filter air supply unit, the air-breathing air supply unit, the electroencephalogram acquisition unit, the filter air supply solenoid valve (26), and the air-breathing air supply solenoid valve (27) through a wired or wireless manner, and the power supply unit is electrically connected to the control unit, the filter air supply unit, the air-breathing air supply unit, the electroencephalogram acquisition unit, the filter air supply solenoid valve (26), and the air-breathing air supply solenoid valve (27).

2. The multi-mode integrated respiratory protection helmet system according to claim 1, characterized in that: The EEG acquisition unit comprises an EEG electrode (4), a signal amplification and conditioning module (5), a microcontroller (6) and a communication module (7); a buffer layer (2) is fixedly installed inside the protective helmet body (1); a plurality of electrode sockets (3) are distributed in the buffer layer (2); the EEG electrode (4) is installed on the electrode socket (3); the electrode socket (3) is electrically connected to the signal amplification and conditioning module (5) through a wire; the signal amplification and conditioning module (5) is electrically connected to the microcontroller (6); the microcontroller (6) is electrically connected to the communication module (7); and the communication module (7) is communicatively connected to the control unit.

3. The multi-mode integrated respiratory protection helmet system according to claim 2, characterized in that: The filtering air supply unit comprises a filtering air supply cavity (17), a micro DC fan (19) and an exhaust gas monitoring unit (35); at least one gas filter canister is installed on the air inlet port of the filtering air supply cavity (17); a micro DC fan (19) is installed on the air outlet port of the filtering air supply cavity (17); the air outlet of the micro DC fan (19) is connected to the air supply air duct (25) through the filtering air supply pipeline (21); the exhaust gas monitoring unit (35) is installed in the filtering air supply cavity (17), and the exhaust gas monitoring unit (35) is electrically connected to the control unit.

4. The multi-mode integrated respiratory protection helmet system according to claim 3, characterized in that: The air-exhalation air supply unit comprises an air respirator (33), an air-exhalation air supply pipeline (22) is installed at one end of the cylinder pressure reducer of the air respirator (33), the air-exhalation air supply pipeline (22) is communicated with the air-exhalation duct (24), and a cylinder pressure detection module is installed at the other end of the cylinder pressure reducer, and the cylinder pressure detection module is electrically connected to the control unit.

5. The multi-mode integrated respiratory protection helmet system according to claim 4, characterized in that: It also includes an environmental monitoring module (34), which is mounted on the protective helmet body (1) or the air supply device (16), and is electrically connected to the control unit.

6. The multi-mode integrated respiratory protection helmet system according to claim 5, characterized in that: It also includes a display unit, which includes a display drive module (11) and a display module (12), the display module (12) is electrically connected to the display drive module (11), and the display drive module (11) is electrically connected to the control unit.

7. The multi-mode integrated respiratory protection helmet system according to claim 6, characterized in that: The control unit comprises a first microprocessing module (9) and a second microprocessing module (13), wherein the first microprocessing module (9) is used to run the EEG stimulation software, send tag data, and collect sensor signals, and the second microprocessing module (13) is used to run the EEG processing algorithm and give corresponding control instructions to drive peripherals.

8. The multi-mode integrated respiratory protection helmet system according to claim 7, characterized in that: The filter air supply solenoid valve (26) and the air breathing air supply solenoid valve (27) are respectively electrically connected to the drive module (28), the drive module (28), the micro DC fan (19) and the exhaust gas monitoring unit (35) are respectively electrically connected to the fan switching control module (18), and the fan switching control module (18) is electrically connected to the second micro-processing module (13) via the communication interface (14).

9. The multi-mode integrated respiratory protection helmet system according to claim 8, characterized in that: The power supply unit comprises a power supply module (32) and a plurality of voltage converters. The power supply module (32) is electrically connected to each voltage converter, and each voltage converter is electrically connected to an electrical component requiring power supply.

10. A method for using the multi-mode integrated respiratory protection helmet system according to claim 9, characterized in that: The following steps are involved: Step 1: When in use, the signal amplification and conditioning module (5) filters, amplifies, and performs analog-to-digital conversion on the signal of the EEG electrode (4); Step 2: The microcontroller (6) reads the EEG electrode signal; Step 3: The fan switching control module (18) reads the exhaust gas detection data of the exhaust gas monitoring unit (35), the second microprocessor module (13) obtains the exhaust gas detection data read by the fan switching control module (18), and the second microprocessor module (13) sends the exhaust gas detection data to the first microprocessor module (9); Step 4: The first microprocessor module (9) reads the oxygen and toxic and harmful gas sensing data of the environmental monitoring module (34), and the first microprocessor module (9) obtains the cylinder pressure data of the cylinder pressure detection module of the air respirator (33); Step 5: The first microprocessor module (9) controls the display driver module (11) to drive the display module (12) to display the sensor data, exhaust gas detection data, and cylinder pressure data of the environment monitoring module (34); the first microprocessor module (9) controls the display driver module (11) to drive the display module (12) to display a plurality of visual induced stimulation interfaces that flash at different frequencies, each visual induced stimulation interface that flashes at different frequencies corresponding to the control action of filtering air supply and air call switching and air supply air volume; Step 6: The first microprocessor module (9) transmits the label data transmitted from the visual evoked stimulation interface software, and the first microprocessor module (9) transmits the label data to the microcontroller (6); Step 7, the microcontroller (6) sends the tag data and the EEG electrode signal to the second microprocessor module (13) through the communication module (7), and the second microprocessor module (13) performs feature extraction and classification on the received data, and converts the classified results into corresponding control instructions; the operator makes auxiliary decisions based on actual needs or based on the environment displayed by the display module (12) and the gas cylinder pressure data. When the displayed gas cylinder pressure data is too low, the corresponding air-to-filter air supply mode control instruction is obtained through the corresponding visual induced stimulation interface of the filter air supply and air breathing switch; when the displayed oxygen concentration is too low or the exhaust gas detects the toxic and harmful gas concentration data or the toxic and harmful gas concentration data is too high, the corresponding filter air supply mode control instruction is obtained through the corresponding visual induced stimulation interface of the air breathing filter air supply switch; when in the filter air supply mode, if the operator feels that the air volume is too large or too small, the corresponding filter air supply air volume control instruction is obtained through the corresponding visual induced stimulation interface of the filter air supply; Step 8, the second microprocessor module (13) sends the control instruction to the fan switching control module (18), the fan switching control module (18) analyzes the control instruction, and drives the micro DC fan (19) to adjust the air supply volume according to the control instruction, or controls the drive module (28) to drive the filter air supply solenoid valve (26) and the air breathing air supply solenoid valve (27) to perform corresponding actions, switching the filter air supply mode or the air breathing mode; when the air breathing mode is analyzed as the air breathing mode to filter air supply mode control instruction, the fan switching control module (18) controls the drive module (28) to open the filter air supply solenoid valve (26) and close the air breathing air supply solenoid valve (27); when the air breathing mode is analyzed as the filter air supply mode control instruction, the fan switching control module (18) closes the filter air supply solenoid valve (26), opens the air breathing air supply solenoid valve (27), and drives the micro DC fan (19) to stop running; when the air breathing mode is analyzed as the filter air supply volume control instruction, the fan switching control module (18) adjusts the speed of the micro DC fan (19) to increase or decrease the air supply volume.

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