Test apparatus and test method for brain-computer oxygenation probe

Abstract

In the testing apparatus and method for a brain-computer oxygen composite probe, the testing section of the brain-computer oxygen composite probe includes a human model assembly and an electroencephalogram (EEG) testing assembly. In the EEG testing assembly, a first coupling component couples with each electrode in the external brain-computer oxygen composite probe to form a capacitor-like structure. Each electrical coupling part in the first coupling component is a conductive electrode sheet or a defined conductive region. The number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygen composite probe. The human model assembly cooperates with the light source and detector in the external brain-computer oxygen composite probe to reflect and scatter the light emitted by the light source back to the detector of the external brain-computer oxygen composite probe. A single test can complete both brain oxygenation and EEG functional tests of the brain-computer oxygen composite probe, improving testing efficiency and also allowing for the testing of crosstalk between brain oxygenation and EEG measurement signals.

Description

Technical Field

[0001] This application relates to the field of bioelectronics technology, specifically to a testing device and testing and evaluation method for a brain-computer oxygen composite probe. Background Technology

[0002] Electroencephalography (EEG) and brain oxygenation (BO2) are used to measure brain neural activity and metabolic state, respectively, and are two parameters that characterize brain function from different perspectives. Simultaneous measurement of EEG and BO2 allows for a comprehensive assessment of brain condition. Using a brain-computer oxygenation composite probe simplifies the connection between the measuring electrodes and detectors for both parameters and the monitor or other monitoring host, resulting in better synchronization of the two parameter measurements.

[0003] However, the measurement principles of EEG and brain oxygenation are different. EEG records the electrical activity of the cerebral cortex based on the contact between electrodes and the surface of the cortex. EEG probes include multiple electrodes that connect to the body, each connected to a corresponding signal processing device via electrical wires. Each electrode has its own electrical wire, resulting in multiple wires for multiple electrodes. While individual wires could perform measurements, this is extremely inconvenient, and the cables of individual wires are not strong enough and are easily damaged. In practical applications, each wire is insulated and encased in a cable sheath, connecting to the external signal processing device via a conductive connector. The connector contains the same number of conductive posts as the electrodes. This eliminates the tedious process of sequential connections; a single plug-and-play connection is all that's needed.

[0004] Brain oxygenation is measured based on the differences in the absorption characteristics of different wavelengths of light by different components of blood in brain tissue. A brain oxygenation probe includes multiple light sources and detectors. Each light source and detector is electrically connected to a controller or signal processor via its own electrical connection wires. The light source receives a control signal, illuminates the tissue, and the light signal after passing through the tissue enters the detector. The detector converts the received light signal into an electrical signal, which is then input into the signal processing unit in the controller for processing and calculation. The combination of light sources and detectors completes the brain oxygenation measurement. Similarly, each light source and detector has a corresponding electrical connection wire. While multiple electrical connection wires could be used individually to complete the measurement, this is extremely inconvenient, and the cable strength of a single electrical connection wire is insufficient, making it very easy to damage. In practical applications, multiple electrical connection wires are each insulated and encased in a cable shell, and electrically connected to an external signal processing device through a conductive connector. The conductive connector contains a number of conductive posts corresponding to the number of electrodes. This eliminates the tedious process of sequential connection; only the conductive connector needs to be plugged and unplugged. Unlike common pulse oximetry, brain oxygenation measurement and analysis requires comprehensive calculation based on signals received from photodetectors at multiple locations. Changes in signal values ​​caused by any detector or its circuitry will affect the final calculation results. Therefore, in the actual mass production and stocking process, there are strict requirements for the consistency of device performance of the probes. The consistency of the functional circuits composed of multiple light-emitting devices, multiple photodetectors, and related electronic components in each probe must meet the requirements specified in the design.

[0005] For greater integration, the EEG electrodes and the brain oxygenation light source and detector are integrated into a single brain-computer oxygenation composite probe. The electrical connections for the EEG electrodes, light source, and detector are each insulated and encased in a cable shell, connected to an external signal processing device via a conductive connector. This connector contains a number of conductive posts corresponding to the number of electrodes. This eliminates the cumbersome process of separately connecting the EEG and brain oxygenation probes; a single plug-and-play connection is all that's needed. It also improves the synchronization of EEG and brain oxygenation signals.

[0006] For example, patent application number CN2021227261674, entitled "Brain-Computed Oxygen Composite Probe for Measuring EEG and Cerebral Blood Oxygen", demonstrates the topological structures of various brain-computed oxygen composite probes.

[0007] like Figure 14 The diagram shown is a schematic diagram of the topological structure of the EEG measurement electrodes in the brain-computer oxygenation combined probe. Figure 15 yes Figure 14 A schematic diagram of the electrical connections of the electrodes and the EEG-J brain-computer oxygen composite probe plug. Figures 16 to 18 These are three different topological structures for the distribution of EEG measuring electrodes, brain oxygen light source, and brain oxygen detector in the brain-computer oxygen composite probe.

[0008] Before production, brain-computer oxygenation probes require testing to ensure the proper functioning of each electrical connection pathway. Current technology involves separate testing: first, the probe undergoes EEG-related electrical connection characteristic testing, followed by brain oxygen-related electrical connection characteristic testing. This approach is not only inefficient, but also fails to detect crosstalk between brain oxygen and EEG signals because they are tested separately.

[0009] like Figures 16 to 18 The three different topologies shown illustrate the distribution of EEG measuring electrodes, brain oxygen source, and brain oxygen detector in the brain-computer oxygen composite probe. The distance between the EEG electrodes is relatively wide; however, the brain oxygen source and detector are embedded in the narrow spaces between the electrodes. During circuit board fabrication, process control errors can lead to copper leakage in closely spaced circuit traces, occasionally resulting in short circuits or low impedance between lines, causing signal crosstalk. In practical applications, short circuits can also occur between the individual EEG electrodes, but more often they occur between the EEG electrodes and the brain oxygen source or detector, resulting in severe signal crosstalk. Furthermore, when brain oxygen and EEG are tested separately, crosstalk between the brain oxygen and EEG signals cannot be tested. In highly demanding medical settings, such as using disposable EEG probes for monitoring anesthesia depth during surgery, crosstalk between brain oxygen and EEG signals can have serious consequences. Summary of the Invention

[0010] The technical problem to be solved by the technical solution in this application is to propose a brain-computer oxygen composite probe testing device and method that can simultaneously test brain oxygen and brain electrical connectivity pathways, which greatly improves testing efficiency and can also test crosstalk between brain oxygen and brain electrical signals, and screen out potentially faulty products.

[0011] The technical solution of this application to solve the above problems is a testing device for a brain-computer oxygen composite probe, including a main control component, a conductive connector connection component, and a brain-computer oxygen composite probe testing section; the conductive connector connection component is used to electrically connect with the conductive connector of an external brain-computer oxygen composite probe under test; the brain-computer oxygen composite probe testing section includes a human body model component and an EEG testing component; the EEG testing component includes a first coupling component; the first coupling component is used to couple with each electrode in the external brain-computer oxygen composite probe under test to form a capacitor-like structure; the first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive areas; the number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygen composite probe under test; the human body model component is used to cooperate with the light source and detector in the external brain-computer oxygen composite probe under test to reflect and scatter the light emitted by the light source in the external brain-computer oxygen composite probe under test back to the detector of the external brain-computer oxygen composite probe under test.

[0012] The brain oxygen testing component also includes a baffle, which is set between the human model component and the external brain oxygen composite probe to be tested. The baffle has multiple independent through holes, and the positions of the through holes correspond one-to-one with the positions of the light source and the detector in the external brain oxygen composite probe to be tested.

[0013] The EEG testing component is attached to the surface of the human model component. After attachment, the multiple electrical coupling parts on the first coupling component correspond one-to-one with the positions of the electrodes in the external brain-computer oxygen composite probe to be tested.

[0014] The EEG testing component includes a printed circuit board (PCB) with multiple conductive areas, each serving as an electrical coupling unit. The PCB also has vias, the positions of which correspond one-to-one with the light source and detector positions in the external brain-computer oxygenation probe under test. When the PCB and the external probe are positioned relative to each other, each electrical coupling unit couples with each EEG electrode in the probe to form a capacitor-like structure for testing the probe. Light emitted from the light source in the external probe enters the human model component through the vias on the PCB and is reflected and scattered back to the detector of the external probe.

[0015] The technical solution of this application to solve the above problems can also be a testing device for a brain-computer oxygen composite probe, including a main control component, a conductive connector connection component, and a brain-computer oxygen composite probe testing unit; the brain-computer oxygen composite probe testing unit includes an electroencephalogram (EEG) testing component and a brain oxygen testing component; the conductive connector connection component is used for electrical connection with the conductive connector of an external brain-computer oxygen composite probe to be tested; the EEG testing component includes a first coupling component; the first coupling component is used for coupling with each electrode in the external brain-computer oxygen composite probe to be tested to form a capacitor-like structure; the first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive areas; the first coupling component includes The number of electrical coupling units corresponds to the number of EEG electrodes in the external brain-computer oxygenation composite probe under test; the brain oxygenation testing component includes a test detector group and a test light source group; the test detector group includes multiple test detectors; the number of test detectors corresponds to the number of light sources in the external brain-computer oxygenation composite probe under test; the main control component is electrically connected to the test detector group to acquire photoelectric signals from each detector in the test detector group; the test light source group includes multiple test light sources; the number of test light sources corresponds to the number of test detectors in the external brain-computer oxygenation composite probe under test; the main control component is electrically connected to the test light source group to output switching control signals to each light source in the test light source group.

[0016] The brain oxygen testing component in the brain-computer oxygen composite probe testing unit is an independently configured component; the test light source group in the brain oxygen testing component includes multiple independently configured test light sources; the test detector group in the brain oxygen testing component includes multiple independently configured test detectors.

[0017] The testing device for the brain-computer oxygen composite probe includes any one of the following technical features: Feature T1: Any electrical coupling part in the first coupling component includes a protective film, conductive gel, and conductive electrode sheet arranged sequentially from bottom to top; the conductive electrode sheet is electrically connected to the excitation signal generation component; the conductive electrode sheet is used to be arranged opposite to each EEG electrode in the external brain-computer oxygen composite probe under test, coupling to form a capacitor-like structure; Feature T2: The main control component includes a brain-computer oxygen composite measuring instrument; Feature T3: The testing device for the brain-computer oxygen composite probe also includes a combined cable and a conductive connector; the combined cable includes a set of EEG conductive cables and a set of brain oxygen conductive cables; each cable in the EEG conductive cables is electrically connected to the conductive electrode sheet in each electrical coupling part; the EEG conductive cables are electrically connected to the connecting post in the conductive connector; each cable in the brain oxygen conductive cables is electrically connected to the test detector or test light source; the brain oxygen conductive cables are electrically connected to the connecting post in the conductive connector; the connecting post in the conductive connector is electrically connected to the main control component.

[0018] The testing device for the brain-computer oxygen composite probe further includes an excitation signal generating component; the excitation signal generating component is electrically connected to a first coupling component; a main control component is electrically connected to the excitation signal generating component and is used to output an excitation signal for EEG electrode testing to the first coupling component; the first coupling component is electrically connected to the excitation signal generating component, and the excitation signal generating component is used to output an excitation signal A to each capacitive structure; the excitation signal generating component generates an excitation signal A, which is a set of excitation signals An, which is input from the conductive electrodes of the first coupling component to the brain-computer oxygen composite probe; n represents the nth electrical coupling part in the first coupling component; the value of n corresponds to the number of EEG electrodes in the brain-computer oxygen composite probe; each electrical coupling part of the first coupling component corresponds to an input excitation signal; the excitation signals input to each electrical coupling part of the first coupling component are different excitation signals; the main control component acquires a detection signal B corresponding to each electrode, which is also a set of detection signals Bn; it evaluates based on a set of detection signals Bn and outputs the test result of the external brain-computer oxygen composite probe under test; when the excitation signal generating component outputs the excitation signal A, the main control component also detects the signals on each conductive connector connecting post connected to the brain oxygen conductive cable in the conductive connector connecting component.

[0019] The technical solution of this application to solve the above problems can also be a testing method for a brain-computer oxygen composite probe. Based on the above-mentioned testing device for the brain-computer oxygen composite probe, it includes the following steps: SA1: The testing section of the brain-computer oxygen composite probe is correspondingly set with the brain-computer oxygen composite probe; each electrical coupling part in the first coupling component is correspondingly set with each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode; the human body model component is correspondingly set with each brain oxygen light source and brain oxygen detector in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen light source and brain oxygen detector; SA 2: The main control component controls the excitation signal generation component, and outputs excitation signal An to each capacitive structure through the first coupling component; SA3: The main control component acquires the detection signal Bn corresponding to each EEG electrode in the brain-computer oxygen composite probe under the excitation signal A; SA4: The main control component acquires the signal DBn obtained from the optical signal test path corresponding to each brain oxygen detector in the external brain-computer oxygen composite probe connected to the conductive connector connection component under the excitation signal A; SA5: Analyze the correlation between signal DBn and excitation signal An, and output the test result of the brain-computer oxygen composite probe based on the analysis results.

[0020] The technical solution of this application to solve the above problems can also be a testing method for a brain-computer oxygen composite probe. Based on the above-mentioned testing device for the brain-computer oxygen composite probe, it includes the following steps: SS1: The testing part of the brain-computer oxygen composite probe is set up correspondingly to the brain-computer oxygen composite probe; each electrical coupling part in the first coupling component is set up correspondingly to each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode; multiple test detectors in the test detector group are set up correspondingly to each brain oxygen light source in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen light source; multiple test light sources in the test detector group are set up correspondingly to each brain oxygen detector in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen detector; SS2: Main control component The control excitation signal generation component outputs excitation signal An to each capacitive structure via the first coupling component; SS3: The main control component acquires the detection signal Bn corresponding to each EEG electrode in the brain-computer oxygen composite probe under the excitation signal A; SS4: Under the excitation signal A, the main control component acquires the signal DBn obtained from the optical signal test path corresponding to each brain oxygen detector in the external brain-computer oxygen composite probe connected to the conductive connector connection component; or under the excitation signal A, the main control component acquires the signal DAn obtained from each test detector in the brain oxygen test component connected to the main control component; SS5: Analyze the correlation between signal DBn and excitation signal An, or analyze the correlation between signal DAn and excitation signal An, and output the test result of the brain-computer oxygen composite probe based on the analysis result.

[0021] Compared with existing technologies, one of the most critical and beneficial effects of this application is that it can simultaneously perform brain oxygenation and brain electrical connectivity pathway testing, completing both functional tests of the brain-computer oxygenation composite probe in a single test, which greatly improves testing efficiency.

[0022] Compared with the prior art, one of the beneficial effects of this application is that the setting of the human model component makes the optical path of brain oxygenation testing closer to the real application scenario, and there is no need to set up other light sources and detectors to establish a one-to-one corresponding optical transmission path for testing.

[0023] Compared with the prior art, one of the beneficial effects of this application is that the multiple independent through holes on the baffle provide a fixed optical path for the light emitted from the brain oxygen source, and also allow the light entering the brain oxygen detector to pass through the constrained light energy of the through holes, which improves the correspondence of the brain oxygen test optical path and reduces the noise of the light source and detector measurement optical path.

[0024] Compared with the prior art, one of the beneficial effects of this application is that the EEG testing component is attached to the surface of the human model component, which makes the testing alignment of the brain-computer oxygen composite probe simpler. Only one operation is needed to simultaneously establish the EEG electrode testing circuit and the brain oxygen testing optical pathway.

[0025] Compared with the prior art, one of the beneficial effects of this application is that multiple electrical coupling parts and multiple through holes are simultaneously provided on the printed circuit board, which makes the correspondence of the brain oxygen testing optical path better while establishing the EEG electrode testing circuit. This can reduce the noise of the brain oxygen light source and the brain oxygen detector measurement optical path and improve the testing accuracy.

[0026] Compared with the prior art, one of the beneficial effects of this application is that the brain-computer oxygen composite probe testing unit includes an EEG testing component and a brain oxygen testing component, which can be performed simultaneously. It can simultaneously perform brain oxygen and EEG electrical connection pathway testing, and complete the functional testing of both parts of the brain-computer oxygen composite probe in one test, which greatly improves the testing efficiency.

[0027] Compared with the prior art, one of the beneficial effects of this application is that the brain oxygen testing component is an independently set component; brain oxygen testing can be performed independently; and it is convenient for scenarios where partial functional testing is performed.

[0028] Compared with existing technologies, one of the beneficial effects of this application is that the test light source group in the brain oxygen testing component includes multiple independently configured test light sources; the test detector group in the brain oxygen testing component includes multiple independently configured test detectors. The independent light sources can be multiple light sources of different wavelength bands, and the different detectors can be detectors of different types and characteristics. When testing with light sources of multiple different wavelength ranges, detectors with different wavelength sensitivity are required to correspond to them; of course, the detector can also be a detector with broad spectrum sensitivity. Similarly, when the detector is a narrow spectrum detector with different wavelength range sensitivity, there must also be corresponding light sources of different wavelength ranges to correspond to it. In practical applications, multiple independently configured test detectors can be in the form of multiple single detectors, and multiple independently configured test light sources can also be multiple single light source displays. During actual testing, they can be flexibly paired according to different test wavelengths to adapt to probes with different topologies.

[0029] Compared with existing technologies, one of the advantages of this application is that the electrical coupling part in the first coupling assembly can be tested using electrodes from a disposable EEG measurement probe, eliminating the need to redesign the testing components. Furthermore, the coupling method allows EEG measurements to be completed without removing the protective membrane.

[0030] Compared with the prior art, one of the beneficial effects of this application is that by incorporating the brain-computer oxygen composite probe as a whole or in part as part of the testing device, the design workload of the brain-computer oxygen composite probe testing device is reduced.

[0031] Compared with the prior art, one of the beneficial effects of this application is that the testing device also includes a combination cable and a conductive connector, which can be the combination cable and conductive connector in the brain-computer oxygen composite probe; by sharing the combination cable and conductive connector in the brain-computer oxygen composite probe, the design workload of the brain-computer oxygen composite probe testing device is further reduced, and the testing efficiency is higher, and the testing scenario is closer to the signal detection conditions in the real application environment.

[0032] Compared with the prior art, one of the beneficial effects of this application is that the excitation signal generation component can simulate mV-level or even uV-level EEG signals within a certain frequency band as coupling input signals through frequency-adjustable signal generation circuit and attenuation circuit, which is more in line with the signal conditions of real application scenarios and enhances the effectiveness of testing.

[0033] Compared with existing technologies, one of the most critical beneficial effects of this application is that it can also test the crosstalk between brain oxygen and brain electrical signals, thus avoiding the risks caused by crosstalk between brain oxygen and brain electrical signals. Attached Figure Description

[0034] Figure 1This is one of the schematic block diagrams of Embodiment 1 of the brain-computer oxygen complex probe testing device;

[0035] Figure 2 This is one of the schematic diagrams showing the correspondence between the brain-computer oxygen composite probe and the brain-computer oxygen composite probe test section;

[0036] Figure 3 This is the second schematic diagram showing the correspondence between the brain-computer oxygen composite probe and the brain-computer oxygen composite probe test section.

[0037] Figure 4 This is the third schematic diagram showing the correspondence between the brain-computer oxygen composite probe and the brain-computer oxygen composite probe test section;

[0038] Figure 5 This is the fourth schematic diagram showing the correspondence between the brain-computer oxygen composite probe and the brain-computer oxygen composite probe test section.

[0039] Figure 6 This is one of the schematic block diagrams of Embodiment 2 of the Brain-Computer Oxygen Complex Probe Testing Device;

[0040] Figure 7 This is the second schematic block diagram of Embodiment 2 of the Brain-Computer Oxygen Complex Probe Testing Device;

[0041] Figure 8 This is the fifth schematic diagram showing the correspondence between the brain-computer oxygenation composite probe and the brain-computer oxygenation composite probe test section;

[0042] Figure 9 This is the sixth diagram showing the correspondence between the brain-computer oxygenation composite probe and the brain-computer oxygenation composite probe test section;

[0043] Figure 10 This is the sixth diagram showing the correspondence between the brain-computer oxygenation composite probe and the brain-computer oxygenation composite probe test section;

[0044] Figure 11 This is a schematic block diagram of the first coupling component;

[0045] Figure 12 This is a schematic diagram of the brain-computer oxygen composite probe and testing device establishing an EEG testing circuit;

[0046] Figure 13 This is a schematic diagram of the brain oxygenation testing circuit established by the brain-computer oxygenation composite probe and testing device;

[0047] Figure 14 This is a schematic diagram of the topological structure of the EEG measurement electrodes in the brain-computer oxygenation probe;

[0048] Figure 15 yes Figure 14 A schematic diagram of the electrical connections of each electrode and the plug of the brain-computer oxygen composite probe;

[0049] Figure 16 This is one of the topological diagrams showing the distribution of EEG measurement electrodes, brain oxygen source, and detector in a brain-computer oxygen composite probe;

[0050] Figure 17 This is the second schematic diagram of the topological structure of the distribution of EEG measuring electrodes, brain oxygen source, and detector in the brain-computer oxygen composite probe.

[0051] Figure 18 This is the third schematic diagram of the topological structure of the distribution of EEG measuring electrodes, brain oxygen source, and detector in the brain-computer oxygen composite probe. Detailed Implementation

[0052] The contents of this application will be further described in detail below with reference to the accompanying drawings.

[0053] It should be noted that the following description of preferred embodiments of this application does not constitute any limitation on this application. The description of preferred embodiments is merely an illustration of the general principles of this application. The embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and technical features numbered with Arabic numerals 1, 2, 3, etc., and designations such as "A" and "B," are used for descriptive purposes only, for ease of explanation, and do not represent a temporal or spatial order; they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first," "second," and numbered with Arabic numerals 1, 2, 3, etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "several" means two or more, unless otherwise expressly and specifically defined.

[0055] like Figure 14 The figure shown is a schematic diagram of the topological structure of the EEG measuring electrodes in the brain-computer oxygenation combined probe; the figure shows the topological structure of each EEG measuring electrode in the brain-computer oxygenation combined probe. Figure 15 yes Figure 14A schematic diagram of the electrical connections of the various EEG electrodes and the EEG-J brain-computer oxygenation probe plug. Figures 16 to 18 These are three different topological structures for the distribution of EEG measuring electrodes, brain oxygen source, and detector in a brain-computer oxygen combined probe. The figure illustrates the topological structure formed by the various EEG measuring electrodes, brain oxygen source, and brain oxygen detector in the brain-computer oxygen combined probe. This topological structure is only a representation of a spatial structure; the actual topological structure can be a variety of specific structures.

[0056] Each EEG electrode, brain oxygen source, and brain oxygen detector in the brain-computer oxygenation probe has its own independent electrical connection wire. These connection wires can be individual cables covered with insulating material, or multiple connection wires can be individually insulated and fixed within a single cable. The purpose of the brain-computer oxygenation probe testing device is to check whether the electrical connection characteristics of each connection wire are normal. Before production, the brain-computer oxygenation probe needs to be tested to ensure the normality of each electrical connection path.

[0057] In existing technologies, brain-computer oxygenation composite probes perform EEG and brain oxygenation-related tests separately. For example, the probe is first tested for EEG-related electrical connectivity characteristics, and then tested for brain oxygenation-related electrical connectivity characteristics. This testing method is not only inefficient, but also fails to detect crosstalk between brain oxygenation and EEG signals because they are tested separately.

[0058] like Figures 16 to 18 The three different topologies of the brain-computer oxygen composite probe shown illustrate the distribution of EEG measuring electrodes, brain oxygen source, and brain oxygen detector. While the distance between the EEG electrodes is relatively wide, the brain oxygen source and detector are embedded in the narrow spaces between them. During the probe's circuit board fabrication, process control errors can lead to copper leakage in closely spaced circuit traces, occasional short circuits, or excessively low impedance, resulting in crosstalk. In practical applications, short circuits can also occur between the EEG electrodes and between the EEG electrodes and the brain oxygen source and detector, causing severe crosstalk. When brain oxygen and EEG are tested separately, crosstalk between the two signals cannot be tested. In highly demanding medical settings, such as disposable EEG probes used for monitoring anesthesia depth during surgery, crosstalk between brain oxygen and EEG signals can have serious consequences. Figures 16 to 18 In the text, the labels with "n" as the first letter represent brain oxygen light sources or detectors related to brain oxygen measurement, and the specific location of the brain oxygen light sources and detectors is not limited. Figures 16 to 18 In the diagram, the symbols starting with the letter 'e' represent electrodes related to EEG, and also include a reference electrode (ref) and a ground electrode. The specific locations of the EEG electrodes are not specified.

[0059] like Figure 1 In one embodiment of a testing device for a brain-computer oxygen composite probe, the testing device includes a main control component, a conductive connector connection component, and a brain-computer oxygen composite probe testing section. The conductive connector connection component is used to electrically connect with the conductive connector of an external brain-computer oxygen composite probe under test. The brain-computer oxygen composite probe testing section includes a human body model component and an electroencephalogram (EEG) testing component. The EEG testing component includes a first coupling component. The first coupling component is used to couple with each electrode in the external brain-computer oxygen composite probe under test to form a capacitor-like structure. The first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive areas. The number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygen composite probe under test. The human body model component is used to cooperate with the light source and detector in the external brain-computer oxygen composite probe under test to reflect and scatter the light emitted by the light source in the external brain-computer oxygen composite probe under test back to the detector of the external brain-computer oxygen composite probe under test.

[0060] like Figure 2 In one embodiment of a testing device for a brain-computer oxygenation composite probe, the brain-computer oxygenation composite probe testing unit includes a human model assembly and an electroencephalogram (EEG) testing assembly; the human model assembly is used for brain oxygenation testing. The EEG testing assembly includes a first coupling assembly, which includes multiple electrical coupling parts, each of which is a conductive electrode sheet or a defined conductive region, such as... Figures 2 to 4 The small dot in the first coupling component; the number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygenation combined probe to be tested. The EEG electrodes in the external brain-computer oxygenation combined probe to be tested are shown as the small dot in the probe. The dashed arrow in the figure shows the light path. The actual light direction can be multiple and does not necessarily have to be perpendicular to the detector.

[0061] like Figure 3 In one embodiment of a testing device for a brain-computer oxygen composite probe, the brain oxygen testing component further includes a baffle. The baffle is disposed between the human body model component and the external brain-computer oxygen composite probe to be tested. The baffle is provided with multiple independent through holes, and the positions of the through holes correspond one-to-one with the positions of the light source and the detector in the external brain-computer oxygen composite probe to be tested.

[0062] like Figure 4 In one embodiment of a testing device for a brain-computer oxygen composite probe, the EEG testing component is attached to the surface of the human body model component. After attachment, the multiple electrical coupling parts on the first coupling component correspond one-to-one with the positions of the electrodes in the external brain-computer oxygen composite probe to be tested.

[0063] like Figure 5In one embodiment of a testing device for a brain-computer oxygen composite probe, the EEG testing component includes a printed circuit board (PCB). The PCB has multiple conductive areas, each serving as an electrical coupling part. Through-holes are provided on the PCB, with their positions corresponding one-to-one with the positions of the light source and detector in the external brain-computer oxygen composite probe under test. When the PCB and the external brain-computer oxygen composite probe under test are positioned opposite each other, each electrical coupling part couples with each EEG electrode in the external probe to form a capacitor-like structure for testing the probe. Light emitted from the light source in the external probe can enter the human body model component through the through-holes on the PCB and be reflected back to the detector of the external probe.

[0064] like Figure 6 and Figure 7 An embodiment of a testing device for a brain-computer oxygen composite probe includes a main control component, a conductive connector connection component, and a brain-computer oxygen composite probe testing unit. The brain-computer oxygen composite probe testing unit includes an electroencephalogram (EEG) testing component and a brain oxygen testing component. The conductive connector connection component is used for electrical connection with the conductive connector of an external brain-computer oxygen composite probe under test. The EEG testing component includes a first coupling component. The first coupling component is used for coupling with each electrode in the external brain-computer oxygen composite probe under test to form a capacitor-like structure corresponding to each electrode. The first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive regions. The number of electrical coupling parts in the first coupling component... The quantity corresponds to the number of EEG electrodes in the external brain-computer oxygenation composite probe under test; the brain oxygenation testing component includes a test detector group and a test light source group; the test detector group includes multiple test detectors; the number of test detectors corresponds to the number of EEG light sources in the external brain-computer oxygenation composite probe under test; the main control component is electrically connected to the test detector group to acquire the photoelectric signals acquired by each test detector in the test detector group; the test light source group includes multiple test light sources; the number of test light sources corresponds to the number of detectors in the external brain-computer oxygenation composite probe under test; the main control component is electrically connected to the test light source group to output switch control signals to each light source in the test light source group.

[0065] In existing technologies, EEG and brain oxygenation tests are performed separately for brain-computer oxygenation probe testing. This is not only inefficient, but also fails to assess the mutual interference between the measurement connections between brain oxygenation and EEG when tested individually. In contrast, the brain-computer oxygenation probe testing unit of this application integrates both EEG and brain oxygenation testing components, simplifying the testing process. A single connection and test can complete the entire testing of the brain-computer oxygenation probe, and it can also test the mutual interference between the measurement connections between brain oxygenation and EEG. This testing device is particularly efficient and accurate in scenarios where EEG electrodes, brain oxygenation light sources, and detectors are densely distributed, such as with brain-computer oxygenation probes.

[0066] like Figure 8 In one embodiment of a testing device for a brain-computer oxygenation probe, the brain-computer oxygenation probe testing section is a single unit, and its topology corresponds to the topology of the external brain-computer oxygenation probe under test. This single-unit design facilitates testing connections and improves testing efficiency.

[0067] Figures 8 to 10 In the brain-computer oxygenation combined probe, circular markers indicate the positions of EEG electrodes, dark squares indicate the positions of the brain oxygen source, and light small squares indicate the positions of the brain oxygen detector. In the test section of the brain-computer oxygenation combined probe, circular markers indicate the positions of multiple coupling parts corresponding to the EEG electrode positions, dark large squares indicate the positions of the test light source, and light small squares indicate the positions of the test detector. The dashed lines in the diagram illustrate the one-to-one correspondence between light path illumination or electrical coupling; these dashed lines do not represent actual electrical connections. The positions of multiple coupling parts correspond one-to-one with the EEG electrode positions; the positions of the brain oxygen source and the test detectors correspond one-to-one; and the positions of the brain oxygen detector and the test light source correspond one-to-one. This one-to-one correspondence allows each test pathway to be tested simultaneously, facilitating crosstalk testing between different test pathways and avoiding the inability to perform synchronous crosstalk testing on some lines during time-division multiplexing. The dashed lines in the diagram do not represent direct electrical connections but only indicate a one-to-one spatial correspondence. The positions of multiple coupling parts and the positions of EEG electrodes are electrically coupled to form a capacitor-like structure; the positions of the brain oxygen source and the test detector correspond to form a spatially corresponding test optical path, and the positions of the brain oxygen detector and the test source correspond to form a spatially corresponding test optical path.

[0068] like Figure 9 and Figure 10 In one embodiment of a testing device for a brain-computer oxygen composite probe, the EEG testing component in the brain-computer oxygen composite probe testing section is an independently configured component; the test light source group in the brain oxygen testing component includes multiple independently configured test light sources; and the test detector group in the brain oxygen testing component includes multiple independently configured test detectors.

[0069] like Figure 9 and Figure 10 In one embodiment of a testing device for a brain-computer oxygen composite probe, the circular markers indicate the positions of the EEG electrodes, the dark squares indicate the positions of the brain oxygen light source, and the light small squares indicate the positions of the brain oxygen detector. In the testing section of the brain-computer oxygen composite probe, the circular markers indicate the positions of multiple coupling parts corresponding to the EEG electrode positions, the dark large squares indicate the positions of the test light source, and the light small squares indicate the positions of the test detector.

[0070] like Figure 9In one embodiment of a testing device for a brain-computer oxygenation composite probe, the EEG testing component is an independently configured component, facilitating the connection of EEG electrodes as a whole for testing. This allows for the connection of all EEG electrodes as a group for testing, improving testing efficiency. This is also applicable when the brain-computer oxygenation composite probe is used for only partial EEG functional testing.

[0071] like Figure 9 and Figure 10 In one embodiment of a testing device for a brain-computer oxygenation composite probe, multiple independently configured test light sources are used; this adapts to different brain oxygenation probe testing needs. In existing technologies, brain-computer oxygenation composite probes typically include multiple detectors. In some scenarios, multiple detectors are of the same type, requiring only one light source for time-sharing testing, or multiple light sources can be used simultaneously to improve testing efficiency. In other scenarios, multiple detectors are of different types, used to sense light sources of different wavelengths. Different detectors have different response ranges and capabilities, requiring matching light sources of corresponding wavelengths for separate testing of multiple detectors. Multiple independently configured test light sources can effectively address such situations. Figure 9 Multiple independently configured test light sources can be fixed together to form a brain oxygen detector test component; multiple independently configured test detectors can be fixed together to form a brain oxygen light source test component.

[0072] Furthermore, such as Figure 10 In one embodiment of a testing device for a brain-computer oxygenation composite probe, multiple independently configured test light sources are used. Each test light source can be separated into its own test head, facilitating flexible combinations between the test light sources and the detectors under test. Whether one test light source corresponds to multiple detectors or one test light source corresponds to one detector, flexible pairing tests are possible. This increases the compatibility of the testing device in testing scenarios with diverse topologies, enabling testing of brain-computer oxygenation composite probes with various topologies. Specifically, each test light source can be detached and paired with its corresponding target detector, allowing for targeted testing of each light source. Similarly, each test detector can be detached and paired with its corresponding target light source, enabling targeted testing of each detector.

[0073] like Figure 9 and Figure 10In one embodiment of a testing device for a brain-computer oxygenation composite probe, multiple independently configured test detectors are used. This allows for adaptation to different brain oxygenation probe testing requirements. In the prior art, brain-computer oxygenation composite probes typically incorporate multiple light sources. Each detector can correspond one-to-one with a light source of different wavelengths, and the response range and capability of the detectors can be set according to the characteristics of the light source being tested; they can also be detectors with broad spectral response capabilities. Having multiple independently configured test detectors corresponding to their respective light sources improves testing efficiency, eliminating the need for time-sharing testing of each light source. Furthermore, in the head, each test detector can be configured as a separate test head, facilitating flexible combinations between the test detectors and the light source being tested. Whether one test detector corresponds to multiple light sources or one test detector corresponds to one light source, flexible pairing testing is possible. This increases the compatibility of the testing device in testing scenarios with diverse topologies, enabling testing of brain-computer oxygenation composite probes with various topologies.

[0074] like Figure 1 , Figure 6 and Figure 7 In one embodiment of a testing device for a brain-computer oxygenation composite probe, the EEG testing component includes a first coupling component and an excitation signal generation component. A main control component is electrically connected to the excitation signal generation component and is used to output an EEG electrode testing excitation signal to the first coupling component. The first coupling component is also electrically connected to the excitation signal generation component, which outputs an excitation signal A to each capacitive structure. The main control component acquires the detection signal B corresponding to each electrode in the external disposable EEG measurement probe. The main control component is electrically connected to a conductive connector connection component, which tests the detection signal B acquired on the conductive connector connection component based on the excitation signal A output by the excitation signal generation component, and outputs the EEG test result from the external brain-computer oxygenation composite probe under test. The excitation signal generation component can use a frequency-adjustable signal generation circuit and an attenuation circuit to simulate mV-level or even μV-level EEG signals within a certain frequency band as coupling input signals, which is more consistent with the signal conditions of real application scenarios and enhances the effectiveness of the test.

[0075] like Figure 1 , Figure 6 and Figure 7 In one embodiment of a testing device for a brain-computer oxygen composite probe, when the excitation signal generation component outputs excitation signal A, the main control component also detects the signals on the connecting posts of each conductive connector in the conductive connector connection component that are connected to the brain oxygen conductive cable.

[0076] By measuring the electrical connectivity characteristics of EEG electrode connection pathways and simultaneously measuring the electrical connectivity characteristics of brain oxygen-related electrical connection pathways, crosstalk between EEG and brain oxygen connection pathways can be identified.

[0077] like Figure 12 In one embodiment of a testing device for a brain-computer oxygen composite probe, the excitation signal generating component generates an excitation signal A, which is a set of excitation signals An, which is input to the brain-computer oxygen composite probe from the conductive electrodes of the first coupling component; n represents the nth electrical coupling part in the first coupling component; the value of n corresponds to the number of EEG electrodes in the brain-computer oxygen composite probe; each electrical coupling part of the first coupling component corresponds to an input excitation signal; the excitation signals input to each electrical coupling part of the first coupling component are different excitation signals; correspondingly, the main control component acquires the detection signal B corresponding to each electrode, which is also a set of detection signals Bn; based on the set of detection signals Bn, the test results of the external brain-computer oxygen composite probe under test are output.

[0078] like Figure 12 In this system, excitation signals A1 to A5 can be excitation signals of different frequencies or amplitudes. If all electrical connections in the brain-computer oxygenation probe are normal, the frequency characteristics or amplitude of the detection signals B1 to B5 should meet normal expectations. If the frequency characteristics or amplitude characteristics of the detection signals B1 to B5 do not meet expectations, the brain-computer oxygenation probe is abnormal. Not only can it detect abnormalities, but it can also identify and determine the specific fault type of the brain-computer oxygenation probe by analyzing the correspondence between excitation signals A1 to A5 and detection signals B1 to B5.

[0079] like Figure 11 In one embodiment of a testing device for a brain-computer oxygen composite probe, any electrical coupling part in the first coupling assembly includes a protective film, conductive gel, and conductive electrode sheet arranged sequentially from bottom to top. The conductive electrode sheet is electrically connected to an excitation signal generating component. The conductive electrode sheet is used to be positioned opposite to each EEG electrode in the external brain-computer oxygen composite probe under test, coupling to form a capacitor-like structure. The conductivity of the EEG sensor is tested via capacitive coupling without removing the protective film (release film) attached to the electrode surface, without damaging the conductive gel state or the probe's adhesiveness. The first coupling assembly can be tested using electrodes from a disposable EEG measurement probe, eliminating the need to redesign the testing components. Each EEG electrode in the brain-computer oxygen composite probe also includes a protective film, conductive gel, and conductive electrode sheet; without removing the protective film, the electrical coupling parts are used to combine in a coupling manner to form a capacitor to complete the electrical connection characteristic test of the electrode sheet.

[0080] like Figure 7In one embodiment of a testing device for a brain-computer oxygen composite probe, a combined cable and a conductive connector are further included. The combined cable includes a set of EEG conductive cables and a set of brain oxygen conductive cables. Each cable in the EEG conductive cables is electrically connected to a conductive electrode in each electrical coupling part, and the EEG conductive cables are electrically connected to the connecting posts in the conductive connectors. Each cable in the brain oxygen conductive cables is electrically connected to a test detector or a test light source. The brain oxygen conductive cables are electrically connected to the connecting posts in the conductive connectors, and the connecting posts in the conductive connectors are electrically connected to the main control component. By incorporating the entire brain-computer oxygen composite probe as part of the testing device, the design workload of the testing device for the brain-computer oxygen composite probe is reduced.

[0081] In one embodiment of a brain-computer oxygenation probe testing device not shown in some of the accompanying drawings, the main control component includes a brain-computer oxygenation measurement instrument. Using the brain-computer oxygenation measurement instrument as the main control component, with the signal detection component shared, further reduces the design workload of the brain-computer oxygenation probe testing device, resulting in higher testing efficiency and a testing scenario that more closely resembles the signal detection conditions in real-world application environments.

[0082] like Figure 12 and Figure 13 In one embodiment of a testing method for a brain-computer oxygenation probe, based on the above... Figure 1 The testing device for the brain-computer oxygen composite probe shown includes the following steps: SA1: The testing section of the brain-computer oxygen composite probe is set up correspondingly to the brain-computer oxygen composite probe; each electrical coupling part in the first coupling component is set up correspondingly to each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode; the human model component is set up correspondingly to each brain oxygen light source and brain oxygen detector in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen light source and brain oxygen detector; SA2: The main control component controls the excitation signal generating component to output excitation signal An to each capacitor-like structure through the first coupling component; SA3: The main control component acquires the detection signal Bn corresponding to each EEG electrode in the brain-computer oxygen composite probe under the excitation signal A; SA4: The main control component acquires the signal DBn obtained in the optical signal testing path corresponding to each brain oxygen detector in the external brain-computer oxygen composite probe connected to the conductive connector connection component under the excitation signal A; SA5: The correlation between the signal DBn and the excitation signal An is analyzed, and the test result of the brain-computer oxygen composite probe is output based on the analysis result. Analyzing the signals DBn and An can determine whether there is crosstalk between the electrical connection pathways corresponding to each brain oxygen detector and the electrical connection pathways corresponding to the brain electrodes.

[0083] like Figure 12 and Figure 13 In one embodiment of a testing method for a brain-computer oxygenation probe, based on the above... Figure 1The brain-computer oxygenation probe testing device shown is based on, as Figures 6 to 7 The testing device for the brain-computer oxygen composite probe shown includes the following steps: SS1: The testing section of the brain-computer oxygen composite probe is set up correspondingly to the brain-computer oxygen composite probe; each electrical coupling part in the first coupling assembly is set up correspondingly to each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode; multiple test detectors in the test detector group are set up correspondingly to each brain oxygen light source in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen light source; multiple test light sources in the test detector group are set up correspondingly to each brain oxygen detector in the brain-computer oxygen composite probe, forming an optical signal testing path corresponding to each brain oxygen detector; SS2: The main control component controls the excitation signal generating component, using the first coupling assembly... The system outputs excitation signals An to each capacitive structure; SS3: The main control component acquires the detection signals Bn corresponding to each EEG electrode in the brain-computer oxygen composite probe under the condition of excitation signal A; SS4: Under the condition of excitation signal A acquired by the main control component, the signals DBn acquired from the optical signal test paths of each brain oxygen detector in the external brain-computer oxygen composite probe connected to the conductive connector assembly; or under the condition of excitation signal A acquired by the main control component, the signals DAn acquired from each test detector in the brain oxygen test assembly connected to the main control component; SS5: Analyze the correlation between signals DBn and excitation signal An, or analyze the correlation between signals DAn and excitation signal An, and output the test results of the brain-computer oxygen composite probe based on the analysis results. Analyzing signals DBn and An can determine whether there is crosstalk between the electrical connection paths corresponding to each brain oxygen detector and the electrical connection paths corresponding to the EEG electrodes. Analyzing signals DAn and An can determine whether there is crosstalk between the electrical connection paths corresponding to each brain oxygen detector and the electrical connection paths corresponding to the EEG electrodes.

[0084] Figure 13 The brain-computer oxygen composite probe to be tested includes two brain oxygen light sources, namely the first light source and the second light source; and six brain oxygen detectors, namely the first detector, the second detector, the third detector, the fourth detector, the fifth detector, and the sixth detector. Figure 13 In the diagram, the EEG electrodes of the brain-computer oxygenation probe under test are omitted and not shown. Correspondingly, the part corresponding to the first coupling component in the testing device for the brain-computer oxygenation probe is also omitted and not shown. In actual applications, the first coupling component will be present.

[0085] Accordingly, Figure 13The testing device for the brain-computer oxygen composite probe includes two test detectors, namely the first test detector and the second test detector, which are respectively set to correspond to the first light source and the second light source; and six test light sources, which correspond to the six brain oxygen detectors respectively, namely the first test light source corresponds to the first detector, the second test light source corresponds to the second detector, the third test light source corresponds to the third detector, the fourth test light source corresponds to the fourth detector, the fifth test light source corresponds to the fifth detector, and the sixth test light source corresponds to the sixth detector. This is a relatively complete embodiment, where the light sources and detectors can be matched one-to-one, facilitating simultaneous testing, improving testing efficiency, facilitating crosstalk testing, reducing the time consumption of time-division testing, and making crosstalk testing more convenient.

[0086] When there are obvious differences in characteristics between the various excitation signals and they are independent, if the signals on the two signal pathways are highly correlated, it is very easy to determine that the probability of signal crosstalk between the two signal pathways is high, and the faulty brain-computer oxygen composite probe can be quickly identified.

[0087] In the testing device and method for the brain-computer oxygen composite probe, the testing section of the brain-computer oxygen composite probe includes an electroencephalogram (EEG) testing component and a brain oxygen testing component. The first coupling component in the EEG testing component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive areas. The brain oxygen testing component includes a test detector group and a test light source group. The number of electrical coupling parts, the number of test detectors, and the number of test light sources correspond one-to-one with the number of EEG electrodes, the number of light sources, and the number of detectors in the brain-computer oxygen composite probe under test. The main control component is electrically connected to the test detector group to acquire the photoelectric signals acquired by each detector in the test detector group. The main control component is also electrically connected to the test light source group to output switch control signals to each light source in the test light source group. A single test can complete the functional testing of both brain oxygen and EEG components of the brain-computer oxygen composite probe, improving testing efficiency and also enabling the testing of crosstalk between the brain oxygen measurement pathway and the EEG measurement pathway.

[0088] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of the application specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A testing device for a brain-computer oxygenation probe, characterized in that, Includes main control components, conductive connector connection components, and brain-computer oxygen composite probe testing unit; The conductive connector assembly is used for electrical connection with the conductive connector of the external brain-computer oxygenation probe to be tested. The brain-computer oxygenation composite probe testing unit includes a human model component and an electroencephalogram (EEG) testing component. The EEG testing component includes a first coupling component; the first coupling component is used to couple with each electrode in the external brain-computer oxygen composite probe to form a capacitor-like structure; the first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive regions; the number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygen composite probe to be tested. The human model component is used in conjunction with the light source and detector in the external brain-computer oxygenation composite probe to reflect and scatter the light emitted by the light source in the external brain-computer oxygenation composite probe back to the detector of the external brain-computer oxygenation composite probe.

2. The testing device for the brain-computer oxygenation probe according to claim 1, characterized in that, The brain oxygen testing component also includes a baffle, which is set between the human model component and the external brain oxygen composite probe to be tested. The baffle has multiple independent through holes, and the positions of the through holes correspond one-to-one with the positions of the light source and the detector in the external brain oxygen composite probe to be tested.

3. The testing device for the brain-computer oxygenation probe according to claim 1, characterized in that, The EEG testing component is attached to the surface of the human model component. After attachment, the multiple electrical coupling parts on the first coupling component correspond one-to-one with the positions of the electrodes in the external brain-computer oxygen composite probe to be tested.

4. The testing device for the brain-computer oxygenation probe according to claim 1, characterized in that, The EEG testing component includes a printed circuit board with multiple conductive areas, each of which serves as an electrical coupling part. The printed circuit board has through holes, and the positions of the through holes correspond one-to-one with the positions of the light source and detector in the external brain-computer oxygenation composite probe to be tested. When the printed circuit board and the external brain-computer oxygen composite probe under test are positioned relative to each other, each electrical coupling part and each EEG electrode in the external brain-computer oxygen composite probe under test are coupled to form a capacitor-like structure for testing the brain-computer oxygen composite probe; the light emitted by the light source in the external brain-computer oxygen composite probe under test can enter the human body model component through the through holes on the printed circuit board, and be reflected and scattered back to the detector of the external brain-computer oxygen composite probe under test by the human body model component.

5. A testing device for a brain-computer oxygenation probe, characterized in that, Includes main control components, conductive connector connection components, and brain-computer oxygen composite probe testing unit; The brain-computer oxygen composite probe testing unit includes an EEG testing component and a brain oxygen testing component; the conductive connector connection component is used for electrical connection with the conductive connector of the external brain-computer oxygen composite probe to be tested. The EEG testing component includes a first coupling component; the first coupling component is used to couple with each electrode in the external brain-computer oxygen composite probe to form a capacitor-like structure; the first coupling component includes multiple electrical coupling parts, which are conductive electrode sheets or defined conductive regions; the number of electrical coupling parts in the first coupling component corresponds to the number of EEG electrodes in the external brain-computer oxygen composite probe to be tested. The brain oxygenation testing kit includes a test detector group and a test light source group; The test detector group includes multiple test detectors; the number of test detectors corresponds to the number of light sources in the external brain-computer oxygen composite probe under test; the main control component is electrically connected to the test detector group to acquire photoelectric signals from each detector in the test detector group; The test light source group includes multiple test light sources; the number of test light sources corresponds to the number of test detectors in the external brain-computer oxygen composite probe under test; the main control component is electrically connected to the test light source group and is used to output switching control signals to each light source in the test light source group.

6. The testing device for the brain-computer oxygenation probe according to claim 5, characterized in that, The brain oxygen testing component in the brain-computer oxygen composite probe testing unit is an independently configured component; the test light source group in the brain oxygen testing component includes multiple independently configured test light sources; the test detector group in the brain oxygen testing component includes multiple independently configured test detectors.

7. The testing device for the brain-computer oxygenation probe according to any one of claims 1 or 5, characterized in that, Includes any one of the following technical features: Feature T1: Any electrical coupling part in the first coupling assembly includes a protective film, a conductive gel, and a conductive electrode sheet arranged sequentially from bottom to top, and the conductive electrode sheet is electrically connected to the excitation signal generating assembly; The conductive electrode pads are positioned opposite to the various EEG electrodes in the external brain-computer oxygenation composite probe to be tested, and coupled to form a capacitor-like structure. Feature T2: The main control component includes a brain-computer interface for measuring brain oxygenation; Feature T3: The testing device for the brain-computer oxygen composite probe also includes a combination cable and a conductive connector; The composite cable includes a set of EEG conductive cables and a set of EEG oxygen conductive cables; each EEG conductive cable is electrically connected to the conductive electrode in each electrical coupling section, and the EEG conductive cables are electrically connected to the connecting posts in the conductive connectors; each EEG oxygen conductive cable is electrically connected to the test detector or test light source; the EEG oxygen conductive cable is electrically connected to the connecting posts in the conductive connectors; and the connecting posts in the conductive connectors are electrically connected to the main control component.

8. The testing device for the brain-computer oxygenation probe according to any one of claims 1 or 5, characterized in that, It also includes an excitation signal generating component; the excitation signal generating component and the first coupling component are electrically connected; The main control component and the excitation signal generation component are electrically connected and are used to output the EEG electrode test excitation signal to the first coupling component; the first coupling component and the excitation signal generation component are electrically connected and the excitation signal generation component is used to output the excitation signal A to each capacitive structure; the excitation signal generation component generates the excitation signal A as a set of excitation signals An, which are input from the conductive electrode of the first coupling component to the brain-computer oxygen composite probe; n represents the nth electrical coupling unit in the first coupling component; the value of n corresponds to the number of EEG electrodes in the brain-computer oxygen composite probe. Each electrical coupling part of the first coupling component corresponds to an input excitation signal; the input excitation signals of each electrical coupling part of the first coupling component are different excitation signals; The main control component acquires the detection signal B corresponding to each electrode, which is also a set of detection signals Bn; it evaluates based on the set of detection signals Bn and outputs the test results of the external brain-computer oxygenation probe under test. When the excitation signal generating component outputs excitation signal A, the main control component also detects the signals on the connecting posts of each conductive connector in the conductive connector connecting component that are connected to the brain oxygen conductive cable.

9. A testing method for a brain-computer oxygenation probe, characterized in that, The testing device based on the brain-computer oxygenation probe according to any one of claims 1 to 4 includes the following steps: SA1: Set the test section of the brain-computer oxygen composite probe in a corresponding manner to the brain-computer oxygen composite probe; Each electrical coupling part in the first coupling component is set to correspond to each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode. The human model component is set up in correspondence with each brain oxygen source and brain oxygen detector in the brain-computer oxygen composite probe to form an optical signal testing pathway corresponding to each brain oxygen source and brain oxygen detector. SA2: The main control component controls the excitation signal generation component, and outputs excitation signal An to each capacitor-like structure through the first coupling component; SA3: Main control component, which acquires the detection signals Bn corresponding to each EEG electrode in the brain-computer oxygenation probe under the excitation signal A. SA4: Under the condition that the main control component acquires excitation signal A, the signal DBn acquired in the optical signal test path corresponding to each brain oxygen detector in the external brain-computer oxygen composite probe connected to the conductive connector assembly. SA5: Analyze the correlation between signal DBn and excitation signal An, and output the test results of the brain-computer oxygen complex probe based on the analysis results.

10. A testing method for a brain-computer oxygenation probe, characterized in that, The testing device based on the brain-computer oxygenation probe according to any one of claims 5 to 8 includes the following steps: SS1: Set the test section of the brain-computer oxygenation probe in a corresponding manner to the brain-computer oxygenation probe; Each electrical coupling part in the first coupling component is set to correspond to each EEG electrode in the brain-computer oxygen composite probe, forming a capacitor-like structure corresponding to each electrode. The multiple test detectors in the test detector group are set up to correspond to the brain oxygen source in the brain-computer oxygen composite probe, forming an optical signal test path corresponding to each brain oxygen source. The multiple test light sources in the test detector group are set to correspond to the brain oxygen detectors in the brain-computer oxygen composite probe, forming an optical signal test path corresponding to each brain oxygen detector. SS2: The main control component controls the excitation signal generation component, and outputs excitation signal An to each capacitor-like structure through the first coupling component; SS3: Main control component, acquires the detection signal Bn corresponding to each EEG electrode in the brain-computer oxygenation probe under the excitation signal A; SS4: Under the condition that the main control component acquires excitation signal A, the signal DBn acquired in the optical signal test path corresponding to each brain oxygen detector in the external brain oxygen composite probe connected to the conductive connector connection assembly; or under the condition that the main control component acquires excitation signal A, the signal DAn acquired by each test detector in the brain oxygen test assembly connected to the main control component. SS5: Analyze the correlation between signal DBn and excitation signal An, or analyze the correlation between signal DAn and excitation signal An, and output the test results of the brain-computer oxygen composite probe based on the analysis results.

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