A detection device, a steering wheel assembly, a steering system and a vehicle

Abstract

The application discloses a detection device, a steering wheel assembly, a steering system and a vehicle, relates to the technical field of health detection devices, and aims to solve the problem of how to improve the integration of the detection device to facilitate the connection with the steering wheel. The detection device comprises a signal acquisition electrode and a blood oxygen detection assembly. The signal acquisition electrode is used for acquiring an electrocardiosignal of a person. The signal acquisition electrode is provided with a containing cavity and has a transmission area. The blood oxygen detection assembly is arranged in the containing cavity and is used for detecting a blood oxygen parameter of the person through the transmission area.

Description

Technical Field

[0001] This application relates to the field of health monitoring device technology, and more particularly to a monitoring device, a steering wheel assembly, a steering system, and a vehicle. Background Technology

[0002] With increasing safety awareness, the driver's physical condition has become a key factor in safe driving. To improve driving safety by monitoring the driver's physical condition in real time, a detection device can be installed at the steering wheel assembly of the vehicle. This device can measure parameters such as the driver's heart rate and blood oxygen levels to assess the driver's physical condition.

[0003] In the existing technology, the detection device is bulky due to its unreasonable structural design, making it inconvenient to install on the steering wheel assembly. Utility Model Content

[0004] The purpose of this application is to provide a detection device, a steering wheel assembly, a steering system, and a vehicle, aiming to solve the problem of how to improve the integration of the detection device to facilitate connection with the steering wheel.

[0005] Firstly, a detection device is provided, comprising a signal acquisition electrode and a blood oxygen detection component. The signal acquisition electrode is used to acquire electrocardiogram (ECG) signals from a person, and the signal acquisition electrode has a receiving cavity and a transmission area. The blood oxygen detection component is disposed within the receiving cavity and is used to detect the person's blood oxygen parameters through the transmission area.

[0006] In the above solution, the blood oxygen detection component detects the blood oxygen parameters of the person and obtains the person's blood oxygen status through the blood oxygen parameters; the signal acquisition electrode collects the person's electrocardiogram (ECG) signal and obtains the person's heart rate through the ECG signal. The signal acquisition electrode has a receiving cavity, and the blood oxygen detection component is installed in the receiving cavity. The signal acquisition electrode and the blood oxygen detection component are integrated and can simultaneously detect the person's heart rate and blood oxygen status, reducing the size of the detection device and making it easier to install the detection device on the steering wheel assembly.

[0007] Optionally, the signal acquisition electrode includes a first end plate, a second end plate, and a surrounding plate. The first end plate and the second end plate are spaced apart, and the surrounding plate is connected between the first end plate and the second end plate and surrounds the first end plate. The first end plate, the second end plate, and the surrounding plate form the receiving cavity.

[0008] Optionally, at least one of the first end plate, the second end plate, and the enclosure is adapted to come into contact with a person, and the at least one of the first end plate, the second end plate, and the enclosure is conductive and adapted to be connected to a power source.

[0009] Optionally, at least one of the first end plate, the second end plate, and the enclosure is adapted to come into contact with a person, and the at least one of the first end plate, the second end plate, and the enclosure is a conductive metal structure and is adapted to be connected to a power source.

[0010] Optionally, at least a portion of the first end plate is a transparent structure to form the transmissive region.

[0011] Optionally, along the direction from the second end plate toward the first end plate, the size of the outer peripheral surface of the enclosure gradually decreases in a first direction, the first direction being perpendicular to the direction from the second end plate toward the first end plate.

[0012] Optionally, the blood oxygen detection component includes: a signal transmitter and a signal receiver. The signal transmitter emits a first light and a second light of different wavelengths that can be absorbed by blood, so that the first light and the second light shine on the person through the transmission area. The signal receiver receives the first light and the second light reflected by the person through the transmission area to detect the person's blood oxygen.

[0013] Optionally, the signal receiving structure includes a first signal receiver and a second signal receiver, wherein the first signal receiver is used to receive the first light reflected by a person, and the second signal receiver is used to receive the second light reflected by a person.

[0014] Optionally, the signal transmitter is disposed between the first signal receiver and the second signal receiver.

[0015] Optionally, the detection device further includes a controller, which is electrically connected to the signal acquisition electrode for receiving electrocardiogram signals acquired by the signal acquisition electrode to analyze changes in the person's heart rate; the controller is also electrically connected to the blood oxygen detection component for receiving blood oxygen parameters detected by the blood oxygen detection component to analyze the person's blood oxygen.

[0016] Secondly, a steering wheel assembly is provided, including a detection device.

[0017] Optionally, the steering wheel assembly may also include a steering wheel body, to which the detection device is connected.

[0018] Optionally, the steering wheel assembly also includes a skin that covers the outside of the steering wheel body. The skin has clearance holes, and the detection device passes through the clearance holes, with a portion of the detection device located between the skin and the steering wheel body.

[0019] Optionally, the steering wheel assembly also includes an insulating element, which is provided between the detection device and the skin, and between the detection device and the steering wheel body.

[0020] Optionally, the steering wheel body includes an annular grip portion and a support portion, the annular grip portion being disposed around the support portion and connected to the support portion; the detection device is connected to the annular grip portion.

[0021] Optionally, the support portion includes a transverse support portion and a longitudinal support portion. The transverse support portion is connected to the annular grip portion. The longitudinal support portion is connected between the transverse support portion and the annular grip portion and is located on one side of the transverse support portion in a second direction. The second direction is perpendicular to the length direction of the transverse support portion and perpendicular to the axial direction of the annular grip portion.

[0022] Optionally, the detection device includes a first detection device and a second detection device, both of which are disposed on the annular grip portion and located on the side of the transverse support portion opposite to the longitudinal support portion; the first detection device and the second detection device are arranged opposite each other along the length direction of the transverse support portion.

[0023] Optionally, the detection device includes a blood oxygen detection component, which includes a signal transmitter. The signal transmitter emits a first light and a second light of different wavelengths that can be absorbed by blood, so that the first light and the second light illuminate the person. The light intensity of the first light and the second light emitted by the signal transmitter of the first detection device is a first light intensity, and the light intensity of the first light and the second light emitted by the signal transmitter of the second detection device is a second light intensity. The first light intensity and the second light intensity are different.

[0024] Optionally, the first light intensity is greater than the second light intensity, and the ratio of the difference between the first light intensity and the second light intensity to the second light intensity is greater than or equal to 30%.

[0025] Thirdly, a steering system is provided, including a detection device or a steering wheel assembly.

[0026] Fourthly, a vehicle is provided, including a detection device, a steering wheel assembly, or a steering system.

[0027] It should be noted that the technical effects brought about by the implementation methods of the second, third, and fourth aspects of this application can be referred to the technical effects brought about by the corresponding implementation methods of the first aspect, and will not be repeated here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a vehicle provided in this application embodiment;

[0030] Figure 2 for Figure 1 A schematic diagram of the steering wheel assembly in a Chinese vehicle;

[0031] Figure 3 for Figure 2 A schematic diagram of the detection device on the steering wheel assembly from a first-person perspective;

[0032] Figure 4 for Figure 3 A schematic diagram of the detection device from a second perspective.

[0033] Figure label:

[0034] 100. Vehicles;

[0035] 10. Vehicle body; 20. Wheel;

[0036] 1. Signal acquisition electrode; 13. First end plate; 14. Second end plate; 141. Central area; 142. Edge area; 15. Surrounding plate; 151. Outer peripheral surface;

[0037] 2. Blood oxygen detection component; 21. Signal transmitter; 22. First signal receiver; 23. Second signal receiver;

[0038] 3. Steering wheel assembly; 31. Foam layer; 32. Circular grip part; 33. Support part; 33a. Lateral support part; 33b. Longitudinal support part;

[0039] 4a. First detection device; 4b. Second detection device

[0040] 5. Hands;

[0041] 6. Controller. Detailed Implementation

[0042] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0043] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0044] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0045] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, said acceptable deviation range being determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range for approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range for approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0046] As people place increasing importance on health, the physical condition of drivers while driving is also receiving more attention. Real-time monitoring and understanding of a driver's physical condition helps analyze whether the driver is fit to continue driving, thereby improving driving safety.

[0047] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 100 provided in an embodiment of this application. The vehicle 100 can be a pure gasoline vehicle, a pure electric vehicle, a hybrid electric vehicle, etc. The vehicle 100 can also be a sedan, bus, truck, trailer, etc.

[0048] The vehicle 100 includes a body 10, wheels 20, and a steering system. The wheels 20 are located on the underside of the body 10, and the vehicle 100 is driven by the rotation of the wheels 20. The steering system is connected to the body 10 and to the wheels 20, and can control the direction of rotation of the wheels 20. This enables control of the driving direction of the vehicle 100.

[0049] In some embodiments, the steering system may include a steering wheel assembly 3 connected to the vehicle body 10 and a steering shaft connected between the steering wheel assembly 3 and the wheel 20. By rotating the steering wheel assembly 3, the steering wheel assembly 3 can drive the wheel 20 to twist through the steering shaft, thereby controlling the driving direction of the vehicle 100.

[0050] Since the driver's hands 5 need to hold the steering wheel assembly 3 at all times during driving, a detection device for detecting heart rate and blood oxygen can be installed on the steering wheel assembly 3. The detection device on the steering wheel assembly 3 can detect the driver's blood oxygen and heart rate, so as to obtain the driver's physical condition and improve driving safety.

[0051] See Figure 3 , Figure 3 for Figure 2 A schematic diagram of the detection device on the steering wheel assembly 3 from a first-person perspective. The detection device includes a signal acquisition electrode 1 and a blood oxygen detection component 2. The signal acquisition electrode 1 is used to acquire the electrocardiogram (ECG) signal of the person, and has a receiving cavity and a transmission area. The blood oxygen detection component 2 is located within the receiving cavity and is used to detect the person's blood oxygen parameters through the transmission area.

[0052] In the above scheme, the blood oxygen detection component 2 detects the blood oxygen parameters of the person and obtains the person's blood oxygen status through the blood oxygen parameters; the signal acquisition electrode 1 collects the person's electrocardiogram signal and obtains the person's heart rate through the electrocardiogram signal. The signal acquisition electrode 1 is provided with a receiving cavity, and the blood oxygen detection component 2 is installed in the receiving cavity. The signal acquisition electrode 1 and the blood oxygen detection component 2 are integrated and can simultaneously detect the person's heart rate and blood oxygen status, reducing the size of the detection device and making it easier to install the detection device on the steering wheel assembly 3.

[0053] It should be understood that, in this implementation, the blood oxygen parameter can be the ratio of oxyhemoglobin to deoxyhemoglobin.

[0054] In some examples, the signal acquisition electrode 1 can be a surface electrode sensor that acquires electrocardiogram signals by attaching a conductive sheet or electrode to the body.

[0055] In some other examples, the signal acquisition electrode 1 can be a dry electrode sensor, which acquires electrocardiogram signals by contacting the body.

[0056] In some examples, the blood oxygen detection component 2 may include a photoelectric sensor that emits a first light and a second light to irradiate the skin and receives the light returned after the first light and the second light irradiate the skin. Blood oxygen parameters are obtained by utilizing the difference in absorption of the first light and the second light by oxyhemoglobin and deoxyhemoglobin.

[0057] In other examples, the pulse oximetry detection component 2 can be a patch-type pulse oximetry sensor. The working principle of a patch-type pulse oximetry sensor is primarily based on photoplethysmography, which utilizes changes in the transmittance of human tissue during vascular pulsation to measure pulse rate and blood oxygen saturation. Specifically, patch-type pulse oximetry sensors typically use light-emitting diodes of specific wavelengths to emit first and second rays of light, which pass through peripheral blood vessels. Due to changes in congestion volume caused by arterial pulsation, the light transmittance changes. A photoelectric converter receives these changes and converts them into electrical signals. After amplification and processing, pulse rate and blood oxygen saturation data can be obtained.

[0058] In some examples, the first and second rays emitted by the blood oxygen detection component 2 illuminate the skin of a person through the transmission area, and are then reflected back to the blood oxygen detection component 2 through the transmission area.

[0059] In some implementations, see Figure 3 The signal acquisition electrode 1 includes a first end plate 13, a second end plate 14, and a surrounding plate 15. The first end plate 13 and the second end plate 14 are spaced apart, and the surrounding plate 15 connects the first end plate 13 and the second end plate 14 and surrounds the first end plate 13. The first end plate 13, the second end plate 14, and the surrounding plate 15 form a receiving cavity. By forming a receiving cavity with the first end plate 13, the second end plate 14, and the surrounding plate 15, and placing the blood oxygen detection component 2 inside the receiving cavity, the integration of the blood oxygen detection component 2 and the signal acquisition electrode 1 is achieved, reducing the size, and enabling the simultaneous acquisition of blood oxygen parameters and electrocardiogram signals. In addition, placing the blood oxygen detection component 2 inside the receiving cavity protects the blood oxygen detection component 2 and extends its service life.

[0060] In some examples, the first end plate 13 and the surrounding plate 15, and the second end plate 14 and the surrounding plate 15 are connected by adhesive, screws, snaps, or other means.

[0061] In some embodiments, at least one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is adapted to be in contact with a person. At least one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is conductive and adapted to be connected to a power source. Since one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is conductive, and one of the first end plate 13, the second end plate 14, and the surrounding plate 15 in the signal acquisition electrode 1 is energized and in contact with a person, the signal acquisition electrode 1 can capture the weak voltage changes generated by cardiac electrical activity, convert them into electrical signals for amplification and recording, thereby completing the detection of heart rate and improving the flexibility of the detection device setup.

[0062] In some examples, only one of the first end plate 13, the second end plate 14, and the enclosure 15 is conductive and suitable for contact with a person.

[0063] In other examples, at least two of the first end plate 13, the second end plate 14, and the enclosure 15 are electrically conductive and suitable for contact with a person.

[0064] In some specific examples, the first end plate 13, the second end plate 14, and the surrounding plate 15 are all electrically conductive and suitable for contact with people.

[0065] It should be noted that the working principle of heart rate detection via signal acquisition electrode 1 in this embodiment is as follows: by contacting the person with the electrode, the weak voltage changes generated by the electrical activity of the heart are captured, and these changes are converted into electrical signals for amplification and recording. By recording the electrical activity of the heart, an electrocardiogram (ECG) waveform is generated.

[0066] In some embodiments, at least one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is adapted to come into contact with a person. The at least one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is a conductive metal structure and is adapted to be connected to a power source. As long as at least one of the first end plate 13, the second end plate 14, and the surrounding plate 15 is a conductive metal structure, the signal acquisition electrode 1 can be connected to a power source. When a person comes into contact with the signal acquisition electrode 1, the person's heart rate is detected, improving the flexibility of the detection device setup.

[0067] In some examples, the first end plate 13, the second end plate 14, and the surrounding plate 15 are all conductive metal structures. Personnel can detect their heart rate by contacting any one of the first end plate 13, the second end plate 14, and the surrounding plate 15, which is convenient for detection.

[0068] In some embodiments, at least a portion of the first end plate 13 is a transparent structure to form the transmission zone. By making at least a portion of the first end plate 13 a transparent structure, this transparent portion can form a transmission zone. When the pulse oximeter is disposed within the receiving cavity, the pulse oximeter can detect the person's pulse oximeter parameters through the transmission zone, which improves the sealing of the device without affecting the detection of pulse oximeter parameters.

[0069] In some examples, the first end plate 13 may be a lens, forming a transmission zone. A first light ray and a second light ray emitted by the blood oxygen detection assembly 2 pass through the lens to detect the person's blood oxygen parameters.

[0070] In other examples, the transmission area can be a through hole provided in the first end plate 13, with part of the blood oxygen detection component 2 exposed at the through hole. When a person comes into contact with the exposed part of the blood oxygen detection component, the blood oxygen detection component 2 detects the person's blood oxygen parameters. For example, the blood oxygen detection component 2 can be a patch-type blood oxygen sensor. The patch-type sensor is attached to the skin and measures the light transmittance in the blood vessels to obtain blood oxygen parameters.

[0071] In some embodiments, along the direction from the second end plate 14 toward the first end plate 13, the outer peripheral surface 151 of the enclosure 15 gradually decreases in size in a first direction, which is perpendicular to the direction from the second end plate 14 toward the first end plate 13. This gradual decrease in size of the outer peripheral surface 151 of the enclosure 15 reduces the volume of the portion of the enclosure 15 protruding from the steering wheel body when the enclosure 15 is mounted on the steering wheel assembly 3, thereby improving the driver's comfort when gripping the steering wheel assembly 3 and enhancing the aesthetics of the steering wheel assembly 3.

[0072] In some examples, along the first direction, the outer peripheral surface 151 of the enclosure 15 is in the form of a trapezoidal frustum, a frustum of a cone, etc.

[0073] In some embodiments, the blood oxygen detection component 2 includes a signal transmitter 21 and a signal receiver structure. The signal transmitter 21 is used to emit first light and second light rays with different wavelengths that can be absorbed by blood, so that the first light rays and second light rays can irradiate the person through the transmission area. The signal receiver structure is used to receive the first light rays and second light rays reflected by the person through the transmission area. The signal transmitter 21 emits first light rays and second light rays with different wavelengths that can be absorbed by blood, and the signal receiver structure receives the reflected light rays after the first light rays and second light rays irradiate the person. Based on the difference in absorption of the first light rays and second light rays by oxyhemoglobin and deoxyhemoglobin in the blood, the blood oxygen parameters of the person are calculated. The structure is simple, low in cost, and easy to integrate into the steering wheel assembly 3.

[0074] In some examples, the signal transmitter 21 can be a light-emitting diode (LED), with the first light source being infrared light and the second light source being red light. The LED emits both infrared and red light. Because oxyhemoglobin and deoxyhemoglobin have significantly different absorption characteristics for red and infrared light—oxyhemoglobin primarily absorbs infrared light, while deoxyhemoglobin primarily absorbs red light—the ratio of oxyhemoglobin to deoxyhemoglobin in the blood is calculated by analyzing the difference in absorption between red and infrared light, thus obtaining the blood oxygen saturation.

[0075] In some examples, the wavelength of red light can be 660 nm, and the wavelength of infrared light can be 940 nm.

[0076] In other examples, the first ray can be near-infrared light with a wavelength of 850 nm or 810 nm; the second ray can be green light with a wavelength of 520-550 nm.

[0077] In some implementations, see Figure 3 The signal receiving structure includes a first signal receiver 22 and a second signal receiver 23. The first signal receiver 22 receives a first ray of light reflected from a person, and the second signal receiver 23 receives a second ray of light reflected from a person. By calculating the absorption difference between the first and second rays, the ratio of oxyhemoglobin to deoxyhemoglobin in the blood is calculated, thereby obtaining blood oxygen saturation. Detecting a person's blood oxygen parameters using the first and second rays is simple in structure, and when installed on the steering wheel assembly 3, the detection process does not affect the driver's driving operations, improving driving safety. Furthermore, with a single signal receiver, the performance of the individual receiver may be affected by factors such as skin movement and changes in ambient light, leading to unstable measurement results. This embodiment improves the accuracy and stability of the detection by using two signal receivers.

[0078] In some examples, the first signal receiver 22 is used to receive infrared light, and the second signal receiver 23 is used to receive red light.

[0079] In some examples, the first signal receiver 22 and the second signal receiver 23 may be the same, for example, both being photodiodes or phototransistors.

[0080] In other examples, the first signal receiver 22 is different from the second signal receiver 23. For example, the first signal receiver 22 is a photodiode and the second signal receiver 23 is a phototransistor.

[0081] In some other embodiments, the signal receiving structure includes a third signal receiver that simultaneously receives a first light ray and a second light ray reflected by a person.

[0082] In some implementations, see Figure 3 , Figure 4 The signal transmitter 21 is positioned between the first signal receiver 22 and the second signal receiver 23. Placing the first and second signal receivers 22 and 23 on either side of the signal transmitter 21 minimizes interference during light propagation, thereby improving measurement accuracy. Furthermore, the symmetrical layout reduces light reflection and refraction during propagation, preventing errors caused by direct light irradiation of either the first or second signal receiver 22, thus improving detection accuracy.

[0083] In some examples, the first signal receiver 22 and the second signal receiver 23 are symmetrically arranged on both sides of the signal transmitter 21.

[0084] In other examples, the first signal receiver 22 and the second signal receiver 23 may be annular, with the first signal receiver 22 surrounding the second signal receiver 23 and the second signal receiver 23 surrounding the signal transmitter 21.

[0085] In some implementations, see Figure 2 , Figure 2 for Figure 1 A schematic diagram of the steering wheel assembly 3 of the vehicle 100 is shown. The detection device also includes a controller 6, which is electrically connected to the signal acquisition electrode 1 to receive the electrocardiogram (ECG) signal collected by the signal acquisition electrode 1 for analyzing the person's heart rate changes. The controller 6 is also electrically connected to the blood oxygen detection component 2 to receive the blood oxygen parameters detected by the blood oxygen detection component 2 for analyzing the person's blood oxygen levels. The controller 6 is electrically connected to both the signal acquisition electrode 1 and the blood oxygen detection component 2, analyzing and processing the ECG signal detected by the signal acquisition electrode 1 and the blood oxygen parameters detected by the blood oxygen detection component 2. Analyzing and processing the data through the same controller 6 helps to correct the data and improve the accuracy of the detection.

[0086] In some examples, the controller 6 can set detection conditions, which may include: vehicle speed, turning angle of vehicle 100, duration of contact between driver's hand 5 and detection device, etc.

[0087] For example, if the driver is not tested when the vehicle speed exceeds 100 km / h, the high speed may cause the driver's heart rate to increase, which may affect the accuracy of the test.

[0088] For example, when the turning angle of vehicle 100 is greater than 50°, blood oxygen parameters and electrocardiogram signals are not detected because when the turning angle of vehicle 100 is large, the hand 5 may need to move and make poor contact with the steering wheel assembly 3, affecting the accuracy of the detection.

[0089] For example, the driver's hand 5 is set to be in contact with the detection device for more than 2 seconds to detect the driver, so as to ensure stable contact between the driver's hand 5 and the detection device and improve the detection accuracy.

[0090] In some examples, controller 6 is located inside the square disk assembly.

[0091] In some implementations, see Figure 2The steering wheel assembly 3 also includes a steering wheel body, to which the detection device is connected. By connecting the detection device to the steering wheel body, it is easier for the detection device to come into contact with the driver's hand 5, thus improving the convenience of driver detection.

[0092] In some examples, the detection device can be connected to the steering wheel body via screws or other connectors.

[0093] In other examples, the detection device can be fixed to the steering wheel body with adhesive.

[0094] In some embodiments, the steering wheel assembly 3 further includes a skin that covers the outer side of the steering wheel body. The skin has clearance holes, through which a detection device passes, with a portion of the detection device located between the skin and the steering wheel body. By providing clearance holes in the skin, allowing the detection device to pass through them, and positioning a portion of the detection device between the skin and the steering wheel body, the exposed volume of the detection device is reduced, improving the aesthetics of the steering wheel assembly 3.

[0095] In some examples, a foam layer 31 is provided between the steering wheel body and the skin. The detection device is connected to the side of the foam layer 31 near the skin. Since the foam layer 31 has a certain elasticity, when the driver's hand 5 comes into contact with the detection device, the detection device and the hand 5 make elastic contact, which improves the comfort of using the detection device.

[0096] In some examples, a portion of the second end plate 14 is located between the skin and the steering wheel body. For instance, the second end plate 14 includes a central region 141 and an edge region 142, with the edge region 142 surrounding the central region 141. The central region 141 is connected to a surrounding panel 15, meaning the surrounding panel 15 is located inside the edge region 142, and the edge region 142 is located between the skin and the steering wheel body. The outline of the second end plate 14 is larger than the size of the clearance hole. By positioning a portion of the second end plate 14 between the skin and the steering wheel body, and by limiting the edge region 142 of the second end plate 14 with the skin, the detection device can be prevented from dislodging from the clearance hole.

[0097] In some examples, the edge region 142 of the second end plate 14 and the section of the surround plate 15 near the second end plate 14 are both located between the skin and the steering wheel body. Positioning a portion of the surround plate 15 between the skin and the steering wheel body reduces the height of the detection device exposed outside the skin, improving user comfort.

[0098] In some embodiments, the steering wheel assembly 3 also includes insulating elements, with insulating elements provided between the detection device and the skin, and between the detection device and the steering wheel body. For example, an insulating element may be provided between the second end plate 14 and the steering wheel body on the side near the steering wheel body, and an insulating element may be provided between the edge region 142 of the second end plate 14 near the skin and the skin. Since the signal acquisition electrode 1 in the detection device is energized, the insulating element prevents the current from the signal acquisition electrode 1 from being conducted to the steering wheel body, thus preventing interference or damage to the electrical components of the steering wheel body.

[0099] In some examples, the insulation element can be a rubber element, which is positioned between the detection device and the skin and steering wheel body.

[0100] In some examples, the insulation can also be made of plastic. By setting up a plastic shell, the part of the detection device that is not exposed to the outside of the skin is wrapped to prevent the current of the detection device from being conducted to the steering wheel body.

[0101] In some implementations, see Figure 2 The steering wheel body includes an annular grip portion 32 and a support portion 33. The annular grip portion 32 is arranged around and connected to the support portion 33, and a detection device is connected to the annular grip portion 32. Since the driver's hand 5 is generally placed on the annular grip portion 32 when driving, placing the detection device on the annular grip portion 32 facilitates the detection of the driver's hand 5, thereby detecting the driver without affecting the driver's normal driving and improving the safety of the vehicle 100.

[0102] In some examples, the detection device is located on the upper or outer periphery of the annular grip 32 in the height direction of the vehicle 100.

[0103] In other examples, the detection device is located on the support 33.

[0104] In some embodiments, the support portion 33 includes a lateral support portion 33a and a longitudinal support portion 33b. The lateral support portion 33a is connected to the annular grip portion 32; the longitudinal support portion 33b is connected between the lateral support portion 33a and the annular grip portion 32, and is located on one side of the lateral support portion 33a in a second direction. The second direction is perpendicular to the length direction of the lateral support portion 33a and perpendicular to the axial direction of the annular grip portion 32. By configuring the support portion 33 as a lateral support portion 33a and a longitudinal support portion 33b, the structural strength of the steering wheel body is improved.

[0105] In some examples, the support portion 33 includes only the transverse support portion 33a, both ends of which are connected to the annular grip portion 32.

[0106] In some implementations, see Figure 2 The detection device includes a first detection device 4a and a second detection device 4b, both of which are located on the annular grip portion 32 and on the side of the lateral support portion 33a opposite to the longitudinal support portion 33b. The first detection device 4a and the second detection device 4b are arranged opposite each other along the length of the lateral support portion 33a. This arrangement of the first detection device 4a and the second detection device 4b, and their opposite orientation along the length of the lateral support portion 33a, facilitates the driver's placement of both hands on the first detection device 4a and the second detection device 4b respectively. The detection is performed using two sets of detection devices, and the data from the two sets can be cross-calibrated to improve the accuracy of the detection.

[0107] In some examples, the first detection device 4a and the second detection device 4b have the same structure, both including a signal acquisition electrode 1 and a blood oxygen detection component 2.

[0108] In other examples, the structures of the first detection device 4a and the second detection device 4b are different. For example, the blood oxygen detection component 2 in the first detection device 4a and the blood oxygen detection component 2 in the second detection device 4b adopt different types of signal receiving structures. For example, the first detection device 4a uses a photodiode, while the second detection device 4b uses a phototransistor.

[0109] In some embodiments, the detection device includes a blood oxygen detection component 2, which includes a signal transmitter 21. The signal transmitter 21 emits a first light and a second light with different wavelengths that can be absorbed by blood, so that the first light and the second light illuminate the person. The light intensity of the first light and the second light emitted by the signal transmitter 21 of the first detection device 4a is the first light intensity, and the light intensity of the first light and the second light emitted by the signal transmitter 21 of the second detection device 4b is the second light intensity. The first light intensity and the second light intensity are different. Different light intensities may lead to certain deviations in detection. Therefore, by setting the light intensities of the first detection device 4a and the second detection device 4b to be different, the blood oxygen parameters obtained by the first detection device 4a and the second detection device 4b are corrected to reduce the impact of excessively strong or weak light intensity on the detection results and improve detection accuracy.

[0110] In some specific examples, the first light intensity is greater than the second light intensity, and the ratio of the difference between the first light intensity and the second light intensity to the second light intensity is greater than or equal to 30%. The absolute value of the difference between the first light intensity of the first detection device 4a and the second light intensity of the second detection device 4b is greater than or equal to 30%, which can effectively avoid inaccurate detection results caused by excessively strong or weak light intensity, thereby improving detection accuracy.

[0111] In some examples, the first light intensity is greater than the second light intensity, and the ratio of the difference between the first and second light intensities to the second light intensity is 30%, 40%, or 50%, etc.

[0112] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0113] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A detection device for detecting a person's heart rate and blood oxygen, characterized in that, include: Signal acquisition electrode (1) is used to acquire electrocardiogram signals from personnel; The signal acquisition electrode (1) is provided with a receiving cavity and the signal acquisition electrode (1) has a transmission area; Blood oxygen detection component (2), which is disposed in the receiving cavity, is used to detect the blood oxygen parameters of the personnel through the transmission area.

2. The detection device according to claim 1, characterized in that, The signal acquisition electrode (1) includes a first end plate (13), a second end plate (14), and a surrounding plate (15). The first end plate (13) and the second end plate (14) are spaced apart. The surrounding plate (15) is connected between the first end plate (13) and the second end plate (14) and is arranged around the first end plate (13). The first end plate (13), the second end plate (14), and the surrounding plate (15) form the receiving cavity.

3. The detection device according to claim 2, characterized in that, At least one of the first end plate (13), the second end plate (14), and the enclosure plate (15) is adapted to be in contact with a person, and at least one of the first end plate (13), the second end plate (14), and the enclosure plate (15) is conductive and adapted to be connected to a power source.

4. The detection device according to claim 2, characterized in that, At least one of the first end plate (13), the second end plate (14), and the enclosure plate (15) is adapted to come into contact with a person, and the at least one of the first end plate (13), the second end plate (14), and the enclosure plate (15) is a conductive metal structure and is adapted to be connected to a power source.

5. The detection device according to any one of claims 2-4, characterized in that, At least a portion of the first end plate (13) is a transparent structure to form the transmission zone.

6. The detection device according to claim 5, characterized in that, Along the direction from the second end plate (14) toward the first end plate (13), the outer peripheral surface (151) of the enclosure plate (15) gradually decreases in size in a first direction, which is perpendicular to the direction from the second end plate (14) toward the first end plate (13).

7. The detection device according to any one of claims 1-4, characterized in that, The blood oxygen detection component (2) includes: The signal transmitter (21) is used to emit a first light and a second light with different wavelengths that can be absorbed by blood, so that the first light and the second light irradiate the person through the transmission area; A signal receiving structure is used to receive the first light and the second light reflected by a person through the transmission area to detect the person's blood oxygen.

8. The detection device according to claim 7, characterized in that, The signal receiving structure includes a first signal receiver (22) and a second signal receiver (23). The first signal receiver (22) is used to receive the first light reflected by a person, and the second signal receiver (23) is used to receive the second light reflected by a person.

9. The detection device according to claim 8, characterized in that, The signal transmitter (21) is located between the first signal receiver (22) and the second signal receiver (23).

10. The detection device according to any one of claims 1-4, characterized in that, It also includes a controller (6), which is electrically connected to the signal acquisition electrode (1) and is used to receive the electrocardiogram signal acquired by the signal acquisition electrode (1) to analyze the heart rate changes of the person; The controller (6) is also electrically connected to the blood oxygen detection component (2) to receive blood oxygen parameters detected by the blood oxygen detection component (2) in order to analyze the blood oxygen of the personnel.

11. A steering wheel assembly, characterized in that, The detection device includes any one of claims 1-10.

12. The steering wheel assembly according to claim 11, characterized in that, It also includes a steering wheel body, and the detection device is connected to the steering wheel body.

13. The steering wheel assembly according to claim 12, characterized in that, It also includes a skin that covers the outside of the steering wheel body, the skin having clearance holes, the detection device passing through the clearance holes, and a portion of the detection device being located between the skin and the steering wheel body.

14. The steering wheel assembly according to claim 13, characterized in that, It also includes insulating components, which are provided between the detection device and the skin, and between the detection device and the steering wheel body.

15. The steering wheel assembly according to any one of claims 12-14, characterized in that, The steering wheel body includes an annular grip portion (32) and a support portion (33). The annular grip portion (32) is arranged around the support portion (33) and connected to the support portion (33). The detection device is connected to the annular grip portion (32).

16. The steering wheel assembly according to claim 15, characterized in that, The support portion (33) includes: A lateral support portion (33a) is connected to the annular grip portion (32); A longitudinal support portion (33b) is connected between the transverse support portion (33a) and the annular grip portion (32), and is located on one side of the transverse support portion (33a) in a second direction, which is perpendicular to the length direction of the transverse support portion (33a) and perpendicular to the axial direction of the annular grip portion (32).

17. The steering wheel assembly according to claim 16, characterized in that, The detection device includes a first detection device (4a) and a second detection device (4b). The first detection device (4a) and the second detection device (4b) are both located on the annular grip portion (32) and on the side of the transverse support portion (33a) opposite to the longitudinal support portion (33b). The first detection device (4a) and the second detection device (4b) are arranged opposite each other along the length direction of the transverse support (33a).

18. The steering wheel assembly according to claim 17, characterized in that, The detection device includes a blood oxygen detection component (2), which includes a signal transmitter (21). The signal transmitter (21) is used to emit a first light and a second light with different wavelengths that can be absorbed by blood, so that the first light and the second light irradiate the person. The first light and the second light emitted by the signal transmitter (21) of the first detection device (4a) have a first light intensity, and the first light and the second light emitted by the signal transmitter (21) of the second detection device (4b) have a second light intensity. The first light intensity and the second light intensity are different.

19. The steering wheel assembly according to claim 18, characterized in that, The first light intensity is greater than the second light intensity, and the ratio of the difference between the first light intensity and the second light intensity to the second light intensity is greater than or equal to 30%.

20. A steering system, characterized in that, It includes the detection device according to any one of claims 1-10, or the steering wheel assembly (3) according to any one of claims 11-19.

21. A vehicle, characterized in that, It includes the detection device according to any one of claims 1-10, or the steering wheel assembly (3) according to any one of claims 11-19, or the steering system according to claim 20.

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