A kind of electroencephalogram safety helmet lining

Abstract

The present invention provides a lining for an electroencephalogram (EEG) safety helmet, comprising a lining body and an elastic boss, on which an EEG electrode for contacting a human body is fixedly arranged, and the boss is fixed to the lining body through an elastic accessory or an inflatable airbag; the boss comprises a groove portion and a support wall, the groove portion is used to fix the EEG electrode, and the interior of the support wall is a hollow structure, one end of which is used to connect the groove portion, and the other end is fixedly mounted on the elastic accessory or the inflatable airbag. The lining of the electroencephalogram (EEG) safety helmet can ensure the comfort of the wearer while having restorative elasticity through the provision of an elastic accessory or an inflatable airbag, effectively avoiding the generation of a tiny gap between the lining and the forehead, and not affecting the collection and analysis of EEG.

Description

Technical Field

[0001] The invention relates to a safety helmet, in particular to an electroencephalogram safety helmet lining installed on the safety helmet. Background Art

[0002] The existing EEG helmets fix the EEG electrodes directly on the existing cap lining, and detect whether the helmet is worn by collecting EEG signals. When wearing a helmet, it is impossible to tighten it very tightly. When people move, especially when they lower their heads to work, due to the effect of gravity, the cap lining of the existing technology will produce a tiny gap with the forehead. This gap will affect the collection and analysis of EEG. The human head and the EEG electrodes are not in good contact, resulting in poor signals, making it impossible to realize the basic functions of the equipment. At the same time, the existing electrodes have a poor sense of contact with the human body, causing discomfort when worn for a long time; during dynamic work, there is no rebound compensation mechanism, resulting in poor contact in certain body positions. Summary of the invention

[0003] The present invention provides an EEG helmet lining to solve the problem that when the existing EEG helmet is worn, the lining will produce a small gap with the forehead, affecting the collection and analysis of EEG and causing the basic functions of the equipment to be unable to be realized. The technical solution is as follows:

[0004] A headgear lining for electroencephalogram (EEG) safety helmet comprises a headgear lining body and an elastic boss, on which an EEG electrode for contacting a human body is fixedly arranged, and the boss is fixed to the headgear lining body via an elastic accessory or an inflatable airbag; the boss comprises a groove portion and a supporting wall, the groove portion is used for fixing and installing the EEG electrode, and the interior of the supporting wall is a hollow structure, one end of which is used for connecting the groove portion, and the other end is fixedly installed on the elastic accessory or the inflatable airbag.

[0005] The elastic accessory is fixedly mounted on the side of the cap lining body that contacts the human body, and comprises a supporting portion fixed to the cap lining body, and the boss is mounted on the supporting portion.

[0006] The boss is fixedly mounted on the support portion via a sliding device. The sliding device comprises a slideway arranged on the support portion and a slider matched with the slideway. The boss is fixedly mounted on the slider.

[0007] The inflatable airbag includes a first airbag with a "U"-shaped structure, and a second airbag located inside the first airbag. The first airbag is provided with an opening for passing the EEG electrode on the boss. The boss is fixedly mounted on the second airbag, and the EEG electrode is connected to the FPC line provided on the second airbag.

[0008] The EEG electrode is directly fixed on the second airbag and connected to the FPC line arranged on the second airbag.

[0009] The boss is provided with a height adjustment device, and the height adjustment device is located between the groove portion and the supporting wall, or between the groove portion and the EEG electrode, or at the end of the supporting wall.

[0010] The groove portion is provided with a pressure sensor.

[0011] The front side of the elastic accessory or the inflatable airbag is provided with sweat-absorbing foam with a through hole, and the EEG electrode on the boss leaks out from the through hole.

[0012] The boss can be directly fixed on the cap lining body.

[0013] The front side of the elastic accessory or the inflatable airbag can be provided with a MIC fixing cabin and / or a speaker to achieve voice reception or two-way intercom.

[0014] The EEG helmet lining provided by the present invention can ensure the comfort of the wearer while having restorative elasticity, effectively avoiding the generation of a tiny gap between the lining and the forehead, and not affecting the collection and analysis of EEG. The present invention has a simple structure, good effect, stable operation, and ensures continuous signal collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of the first embodiment of the EEG helmet lining;

[0016] Figure 2 is a front view of the first embodiment of the EEG helmet lining;

[0017] Figure 3 is a bottom view of the first embodiment of the EEG helmet lining;

[0018] Figure 4 yes Figure 1 AA section view;

[0019] Figure 5 is a stereoscopic diagram of the second embodiment of the EEG helmet lining;

[0020] Figure 6 is a stereoscopic diagram of a fourth embodiment of the electroencephalogram safety helmet lining;

[0021] Figure 7 is a top view of the fourth embodiment of the EEG helmet lining;

[0022] In the figure: 100-cap lining body; 200-elastic accessories; 300-EEG electrode, 210-supporting part; 220-boss; 230-MIC fixing cabin; 240-fixing part; 250-height adjustment device; 260-slideway; 270-slider; 310-first airbag; 320-second airbag; 330-first inflation device; 340-second inflation device; 350-exhaust pipe. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0024] like Figures 1 to 3 In the first embodiment shown, the EEG helmet lining includes a lining body 100 fixedly mounted on the inner side of the helmet, and an elastic accessory 200 is fixedly arranged on the lining body 100. The elastic accessory 200 is made of silicone and has good resilience. In this embodiment, the lining body 100 surrounds the inner side of the helmet. Since the number of EEG electrodes 300 is small, the elastic accessory 200 can be installed in the middle of the lining body 100, and the EEG electrode 300 is fixed on the elastic accessory 200 so that the EEG electrode 300 contacts the skin of the forehead.

[0025] The elastic accessory 200 includes a support portion 210 fixed to the cap lining body 100, and a plurality of bosses 220 are provided on the support portion 210. The support portion 210 is fixed to the cap lining body 100 by a plurality of sets of fixing members 240, and the fixing members 240 are buckles, bolts, Velcro or snaps, etc., and the specific fixing method can be changed according to the needs, but the effect achieved is that the elastic accessory 200 can be tightly fixed to the cap lining body 100, so that the position of the elastic accessory 200 is relatively stable, and better signal acquisition and processing can be achieved. The number of the fixing members 240 is 1-8 groups, and four sets of buckles are used for fixing in this embodiment.

[0026] Combination Figure 4 As shown, the boss 220 is used to fix the EEG electrode 300. The boss 220 is provided with a groove at a position away from the cap lining body 100. The EEG electrode 300 is placed in the groove, and its shape matches the shape of the groove. The upper end of the EEG electrode 300 is an arc structure, which can contact the brain skin. The signal line of the EEG electrode 300 is led out from the lower end of the boss 220 and connected to the signal processing device on the helmet.

[0027] In the first embodiment, the boss 220 can be in the form of a hollow cylinder or a hollow square. In this way, the boss 220 is suspended in the middle and has good softness. The side outer wall of the boss 220 is a support wall with a certain thickness and has a certain resilience. Compared with the current method of directly installing the electrode on the cap lining body 100 or directly fixing it on the soft silica gel or foam provided on the cap lining body 100, the arrangement of the boss 220 can better collect signals and solve the problem of not being able to compensate for rebound.

[0028] The number of the bosses 220 is determined according to the EEG electrodes 300, and each boss 220 is correspondingly installed with an EEG electrode 300. When collecting EEG signals, the more EEG electrodes 300 there are, the more accurate the collected signals are, and the greater the amount of calculation required for signal processing. However, at least three EEG electrodes 300 are provided, namely a positive electrode, a reference electrode, and a negative electrode. The number of EEG electrodes 300 provided on the forehead can be flexibly set according to actual needs, for example, it can be set to 3-6. In this embodiment, the number of EEG electrodes 300 provided is three, and the number of the bosses 220 is also three. When the helmet is worn, the EEG electrode 300 faces the side of the forehead.

[0029] Furthermore, in the first embodiment, a MIC fixing compartment 230 can be provided on the front side of the support portion 210, and the MIC fixing compartment 230 can be used to place a microphone as a pickup for voice intercom. A speaker fixing position can also be provided on the front side of the support portion 210, which can be used for background notification or two-way intercom in conjunction with the microphone.

[0030] Furthermore, on the side of the elastic accessory 200 where the boss is provided, a sweat-absorbing foam with a through hole can be pasted or fixed in other ways, and the through hole just leaks out the EEG electrode 300 at the boss 220 .

[0031] It can be seen that in the first embodiment of the present invention, the "suspended elastic structure" realized by the boss 220 can maintain a relatively stable pressure in a larger elastic space, ensuring good contact between the electrode and the forehead. The EEG electrode sheet is fixed at the top of the "suspended elastic structure" to facilitate contact with the forehead; the electrode wire is welded to the bottom surface of the electrode and led out from the suspended part of the "suspended elastic structure" to the circuit board. The "suspended elastic structure" has good softness, and the electrode will not leave marks on the forehead; the circumference of the "suspended elastic structure" is a supporting wall of a certain thickness, which has a certain resilience, ensuring that within a certain spatial range, the EEG electrode 300 and the forehead can have good contact.

[0032] Taking into account the large differences in people's head shapes, the one-piece "height of the suspended elastic structure" cannot adapt to all people, and can be further improved to a "separate height-adaptable suspended elastic structure" with "height adaptability". A height adjustment device is provided between the boss 220 and the EEG electrode 300 as a "platform component", and the boss 220 and the "platform component" for fixing the "EEG electrode" are split, and "platform components" of "different heights" can be selected according to the head shape.

[0033] One end of the height adjustment device is fixedly connected to the EEG electrode 300, and the other end is installed on the boss 220. The height adjustment device can select a telescopic rod, an adjusting bolt, etc., which can adjust the telescopic degree of the boss 220. The height adjustment device can also be set on the boss 220. In a certain embodiment of the platform component, an adjusting bolt can be used to match the screw hole on the surface of the boss 220, and the screw hole is located in the groove of the boss 220, which does not affect the structure of the supporting wall. By rotating the adjusting bolt, the height of the EEG electrode 300 can be adjusted to achieve the distance adjustment of the EEG electrode 300. A height adjustment device can also be set between the groove and the supporting wall. By selecting a telescopic rod, an adjusting bolt, etc., the telescopic degree of the boss 220 can be adjusted.

[0034] Taking into account the large differences in people's head circumferences, it is further improved to a "position-adaptable" separated highly adaptable suspended elastic structure": the "suspended elastic structure" and the support part 210 are "split structures", and the "suspended elastic structure" can move along the slide on the support part 210 within a certain range to adapt to different head circumferences.

[0035] like Figure 5 In the second embodiment shown, a height adjustment device 250 is provided at the end of the boss 220, and the height adjustment device adopts an adjusting bolt. A slide 260 is provided on the support portion 210, and the bottom of the boss 220 is fixedly mounted on the slider 270. The upper and lower ends of the slider 270 cooperate with the slide 260 and can move along the slide 260.

[0036] The boss 220 moves along the slideway, and when it reaches the set position, the position of the slider 270 on the slideway 260 can be fixed by tightening bolts, buckles or Velcro provided on the back of the slider 270, thereby fixing the boss 220, thereby achieving adjustment of the left and right position of the boss 220.

[0037] In the third embodiment, the EEG helmet lining includes a lining body 100 fixedly mounted on the inner side of the helmet, and a plurality of bosses 220 made of silicone accessories can be directly fixedly provided on the lining body 100, and an EEG electrode 300 is fixed on the top of the boss 220 so that the EEG electrode 300 is in contact with the skin of the forehead. The boss 220 is directly fixed to the lining body 100 through a fixing member 240, and the fixing member 240 is made of a buckle, a bolt, a Velcro or a snap, etc. The specific fixing method can be changed according to the needs, but the effect achieved is that the boss 220 can be tightly fixed to the lining body 100, so that the position of the boss 220 is relatively stable, and better signal acquisition and processing can be achieved.

[0038] The boss 220 includes a cavity structure in the middle and a groove at the top. The boss 220 is provided with a groove at the top away from the cap lining body 100. The EEG electrode 300 is placed in the groove, and its shape matches the shape of the groove. The upper end of the EEG electrode 300 is an arc structure that can contact the brain skin. The signal line of the EEG electrode 300 is led out from the lower end of the boss 220 and connected to the signal processing device on the helmet.

[0039] The cavity structure of the boss 220 can be a hollow cylinder or a hollow square. In this way, the boss 220 is suspended in the middle and has good softness. The side outer wall of the boss 220 is a supporting wall with a certain thickness and has a certain resilience.

[0040] Compared with the current method of directly installing the electrode on the cap lining body 100 or directly fixing the electrode on the soft silicone or foam provided on the cap lining body 100, the arrangement of the boss 220 can better collect signals and solve the problem of failure of rebound compensation.

[0041] The number of the bosses 220 is determined according to the EEG electrodes 300. Each boss 220 is correspondingly installed with an EEG electrode 300. When collecting EEG signals, the more EEG electrodes 300 there are, the more accurate the collected signals are, and the greater the amount of signal processing calculations. However, at least three EEG electrodes 300 are provided, namely, a positive electrode, a reference electrode, and a negative electrode.

[0042] In this embodiment, the bosses 220 may be five in number, realizing dual-guide synchronization and monitoring the left and right brains at the same time. To achieve more functions, the bosses 220 are used to fix the left positive electrode, the left negative electrode, the reference electrode, the right positive electrode, and the right negative electrode. When the helmet is worn, the EEG electrode 300 faces the forehead.

[0043] Furthermore, on the side of the elastic accessory 200 where the boss is provided, a sweat-absorbing foam with a through hole can be pasted or fixed in other ways, and the through hole just leaks out the EEG electrode 300 at the boss 220 to increase comfort.

[0044] Adding a mic fixed cabin in the middle of the forehead can "pick up" the user's voice as closely as possible to achieve voice communication.

[0045] Directly using the boss 220 to install it on the cap lining body 100 is not conducive to the adjustment of the boss 220, but it is an easy way to think of and implement when reducing costs and wearing for a long time.

[0046] In the fourth embodiment, the present invention provides an "airbag elastic structure" which is applied to the installation of the EEG electrode 300. The EEG signal acquisition is based on the contact between the electrode sheet (the EEG electrode 300) and the forehead. If it is tightened, the comfort of the person will be reduced; if it is loosened, the electrode and the forehead will be in contact but not in contact, which will introduce a lot of noise. Through the "airbag elastic structure" of the present invention, a relatively stable pressure can be maintained in a larger elastic space to ensure good contact between the electrode and the forehead.

[0047] The "airbag elastic structure" can fix three EEG electrodes (used to fix the positive electrode, reference electrode and negative electrode respectively), or it can fix five EEG electrodes (used to fix the left positive electrode, left negative electrode, reference electrode, right positive electrode and right negative electrode respectively), to achieve dual-lead synchronization and monitor the left and right brain at the same time.

[0048] The advantage of the inflatable airbag structure is that while maintaining the performance advantages of the "oblique arm suspended elastic structure", the contact surface is relatively flat, the entire FPC line can be used, and the process difficulty is reduced. The inflatable airbag has good softness, and the electrode will not leave marks on the forehead.

[0049] like Figure 6 and Figure 7 As shown, the inflatable airbag includes an external first airbag 310 and a second airbag 320 disposed inside the first airbag 310. The first airbag 310 is provided with a first inflating device 330, and the first airbag 310 is inflated by the first inflating device 330; the second airbag 320 is provided with a second inflating device 340, and the second airbag 320 is inflated by the second inflating device 340. The inflation ports of the first inflating device 330 and the second inflating device 340 are arranged side by side. When adjusting the air pressure, the first airbag 310 and the second airbag 320 are both provided with an air outlet, and a valve is provided at the air outlet. The rear ends of the air outlets of the first airbag 310 and the second airbag 320 are merged into the same outlet pipe 350.

[0050] The second airbag 320 is fixed between the top layer and the bottom layer of the first airbag 310 to ensure that the inflatable airbag has a certain fixed shape, further increasing the support strength of the inflatable airbag. The first airbag 310 is "U"-shaped, with a top layer and a bottom layer on both sides, of which the top layer is on the side of the EEG electrode 300, and the second airbag 320 is clamped by the top layer and the bottom layer. This design can ensure that the inflatable airbag has a certain resilience and ensure that the electrode and the forehead can have good contact within a certain spatial range. The contact surface of the first airbag 310 and the second airbag 320 is provided with a fixing part 240. In one embodiment, the fixing part can be Velcro, so that the position of the second airbag 320 can be adjusted.

[0051] The EEG electrode 300 is fixed on the "FPC line" through the boss 200 or directly. The FPC line is fixed above the second airbag 320, which facilitates the contact between the EEG electrode 300 and the forehead and reduces the difficulty of welding. The top layer of the first airbag 310 is provided with three openings for passing the EEG electrode 300. The first airbag 310 is fixed to the cap lining body 100, and the cap lining body 100 is clamped by the top layer and the bottom layer, or a fixing piece for fixing the cap lining body 100 is installed on the outside of the bottom layer, so as to realize the fixed connection between the cap lining body 100 and the first airbag 310.

[0052] On the basis of the above embodiments one to four, in order to ensure the quality of EEG signals and monitor the causes of poor signals, a strain gauge is added at the boss 220, or a micro pressure sensor is added at the top of the boss 220 to detect the "tightening degree" of the cap lining. Too loose or too tight will affect the signal quality.

[0053] Because the electrode part does not have the function of absorbing sweat, if the electrode part completely contacts the forehead, the comfort will be reduced if worn for a long time. Therefore, adding sweat-absorbing foam outside the electrode contact point can effectively solve the comfort problem.

[0054] When collecting EEG signals for time domain and frequency domain analysis, if the amplitude or spectrum value is too large or too small, it indicates that the signal quality is poor. In order to realize the functions of pressure monitoring, EEG signal quality monitoring, and suspended elastic structure indication, indicator lights can be set to assist.

[0055] Furthermore, three two-color indicator lights (the number and color of the lights are not limited) are added to the edge of the cap lining to indicate the pressure of the three "suspended elastic structures" respectively: if the pressure is too high or too low, the red light is on; if the pressure is moderate, the green light is on. Signal detection of the EEG electrode 300 at the boss 220 is realized.

[0056] Furthermore, a two-color indicator light (the number and color of lights are not limited) is added to the edge of the cap lining to indicate the contact status of the three "EEG electrodes" and the "EEG signal quality" respectively: if the EEG signal is too large or too small, the red light is on; if it is moderate, the green light is on.

[0057] The EEG helmet lining, through the provision of elastic accessories and bosses thereon, or the provision of inflatable airbags, can ensure the comfort of the wearer while having restorative elasticity, effectively avoiding the formation of a tiny gap between the lining and the forehead, and not affecting the collection and analysis of EEG.

[0058] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An electroencephalogram helmet lining, characterized in that: It comprises a cap lining body and an elastic boss, on which an EEG electrode for contacting a human body is fixedly arranged, and the boss is fixed to the cap lining body through an inflatable airbag; the boss comprises a groove portion and a support wall, the groove portion is used to fix the EEG electrode, and the interior of the support wall is a hollow structure, one end of which is used to connect the groove portion, and the other end is fixedly mounted on the inflatable airbag; The inflatable airbag includes a first airbag of a "U"-shaped structure, and a second airbag located inside the first airbag, the top layer of the first airbag is provided with an opening for passing the EEG electrode on the boss, the boss is fixedly mounted on the second airbag, the EEG electrode is connected to the FPC line provided on the second airbag, and the EEG electrode is directly fixed on the second airbag and connected to the FPC line provided on the second airbag; The boss is provided with a height adjustment device, and the height adjustment device is located between the groove portion and the supporting wall, or between the groove portion and the EEG electrode, or at the end of the supporting wall.

2. The EEG helmet lining according to claim 1, characterized in that: The groove portion is provided with a pressure sensor.

3. The EEG helmet lining according to claim 1, characterized in that: A sweat-absorbing foam with a through hole is arranged on the front side of the inflatable airbag, and the EEG electrode on the boss leaks out from the through hole.

4. The EEG helmet lining according to claim 1, characterized in that: The front side of the inflatable airbag is provided with a MIC fixing cabin and / or a speaker to realize voice reception or two-way intercom.

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