Anti-interference biological signal detection steering wheel and in-vehicle oxygen supply system

Abstract

The anti-interference biological signal detection steering wheel comprises a steering wheel body, biological signal detection assemblies are arranged in the middle of a rim of the steering wheel body in a bilateral symmetry mode, each biological signal detection assembly comprises an installation groove body, and the installation groove bodies are fixedly embedded in the rim; a multi-wavelength optical sensor, a flexible circuit board and a light-transmitting cover plate are arranged in the mounting groove body; a first electromagnetic shielding layer is laid at the bottom in the mounting groove body, a flexible circuit board is laid above the first electromagnetic shielding layer, the multi-wavelength optical sensor is attached to the flexible circuit board and is integrally connected with the flexible circuit board, and the light-transmitting cover plate is arranged above the multi-wavelength optical sensor and is fixed at an upper port of the mounting groove body. And a second electromagnetic shielding layer is arranged on the lower surface, facing the multi-wavelength optical sensor, of the light-transmitting cover plate. According to the utility model, in-vehicle electromagnetic interference and ambient light interference are effectively suppressed, and the accuracy and stability of blood oxygen and heart rate physiological signal detection are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of in-vehicle oxygen supply technology, specifically relating to an anti-interference biosignal detection steering wheel and an in-vehicle oxygen supply system. Background Technology

[0002] With the development of automotive intelligence, monitoring the health status of drivers has become an important research subject for ensuring driving safety. In existing technologies, some vehicles monitor drivers' physiological signals through wearable devices, but these suffer from problems such as inconvenience in wearing them and susceptibility to interference. Furthermore, biosensors integrated into the steering wheel often experience unstable data due to the complex electromagnetic environment and ambient light interference. For example, the invention patent with publication number CN116616728A discloses a steering wheel for monitoring physiological signals. This steering wheel acquires the driver's electromyography (EMG) signals through an EMG sensor on one side of the grip and the driver's blood oxygen and heart rate signals through a blood oxygen and heart rate sensor on the other side. This invention patent's technical solution suffers from the aforementioned problems of unstable data due to complex electromagnetic environments and ambient light interference. In addition, traditional in-vehicle oxygen supply systems lack intelligent linkage with driver physiological status monitoring, making it difficult to respond promptly to hypoxia caused by altitude sickness or fatigue, posing a driving safety hazard. Utility Model Content

[0003] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing an anti-interference biosignal detection steering wheel and in-vehicle oxygen supply system.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides an anti-interference biosignal detection steering wheel, including a steering wheel body. Biosignal detection components are symmetrically arranged on the left and right sides of the center of the steering wheel rim. Each biosignal detection component includes a mounting groove embedded and fixed within the rim. A multi-wavelength optical sensor, a flexible circuit board, and a light-transmitting cover are disposed within the mounting groove. A first electromagnetic shielding layer is laid at the bottom of the mounting groove, and a flexible circuit board is laid above the first electromagnetic shielding layer. The multi-wavelength optical sensor is mounted on and integrated with the flexible circuit board. The light-transmitting cover is located above the multi-wavelength optical sensor and fixed at the upper end of the mounting groove. A second electromagnetic shielding layer is disposed on the lower surface of the light-transmitting cover facing the multi-wavelength optical sensor.

[0006] Furthermore, the first electromagnetic shielding layer is made of conductive cloth or aluminum foil, which is bonded and fixed to the bottom of the mounting groove by conductive adhesive; the second electromagnetic shielding layer is made of flexible transparent electromagnetic shielding film, which is bonded and fixed to the lower surface of the light-transmitting cover plate facing the multi-wavelength optical sensor by conductive adhesive.

[0007] Furthermore, an electric heating wire is provided inside the rim below the biosignal detection component.

[0008] Furthermore, the light-transmitting cover is made of light-transmitting silicone, polyurethane, or TPU material, and the upper surface of the light-transmitting cover is set in an arc shape to ensure that it matches the arc design of the wheel rim of the steering wheel body.

[0009] In addition, the present invention provides an in-vehicle oxygen supply system, including the multi-wavelength optical sensor of the anti-interference biosignal detection steering wheel, and an in-vehicle oxygen generator, an in-vehicle ECU, and an in-vehicle central control screen installed in the vehicle; the signal transmission end of the multi-wavelength optical sensor of the anti-interference biosignal detection steering wheel is connected to the signal transmission end of the in-vehicle ECU, the control signal output end of the in-vehicle ECU is connected to the in-vehicle oxygen generator, and the in-vehicle central control screen is connected to the in-vehicle ECU.

[0010] The beneficial effects of this utility model are:

[0011] Compared with existing technologies, the anti-interference biosignal detection steering wheel and in-vehicle oxygen supply system provided by this utility model have the following advantages: By integrating a multi-wavelength optical sensor on the wheel rim of the steering wheel body, combined with the first and second electromagnetic shielding layers of the double-layer electromagnetic shielding design, the system effectively suppresses in-vehicle electromagnetic interference and ambient light interference, significantly improving the accuracy and stability of blood oxygen and heart rate physiological signal detection; In addition, the in-vehicle oxygen supply system uses a multi-wavelength optical sensor to detect the driver's physiological state in real time, and works with the vehicle's on-board ECU to intelligently control the start and stop of the on-board oxygen generator, solving the problem of hypoxia in scenarios such as altitude sickness and fatigue driving, and ensuring driving safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an anti-interference biosignal detection steering wheel according to the present invention.

[0013] Figure 2 This is a schematic diagram of the AA structure of a biosignal detection component for an anti-interference biosignal detection steering wheel according to the present invention.

[0014] Figure 3 This is a schematic diagram of the structure of an in-vehicle oxygen supply system according to this utility model.

[0015] The markings in the diagram are as follows: 1 is the steering wheel body, 2 is the biosignal detection component, 3 is the wheel rim, 4 is the electric heating wire, 5 is the vehicle central control screen, 6 is the vehicle ECU, and 7 is the vehicle oxygen generator; 201 is the second electromagnetic shielding layer, 202 is the light-transmitting cover, 203 is the mounting slot, 204 is the multi-wavelength optical sensor, 205 is the flexible circuit board, and 206 is the first electromagnetic shielding layer. Detailed Implementation

[0016] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Combination Figure 1 and Figure 2 As shown in the figure, the anti-interference biosignal detection steering wheel provided by this utility model embodiment includes a steering wheel body 1, and biosignal detection components 2 are symmetrically arranged on the left and right sides of the center of the wheel rim 3 of the steering wheel body 1. This ensures that the driver can reliably contact the biosignal detection components 2 when holding the wheel rim 3 of the steering wheel body 1. The biosignal detection components 2 include a mounting groove 203, which is embedded and fixed in the wheel rim 3. A multi-wavelength optical sensor 204 and a flexible circuit board 20 are arranged in the mounting groove 203. 5. Light-transmitting cover plate 202; A first electromagnetic shielding layer 206 is laid at the bottom of the mounting groove 203, and a flexible circuit board 205 is laid on top of the first electromagnetic shielding layer 206. The multi-wavelength optical sensor 204 is attached to the flexible circuit board 205 and integrated with the flexible circuit board 205. The light-transmitting cover plate 202 is located above the multi-wavelength optical sensor 204 and fixed at the upper port of the mounting groove 203. A second electromagnetic shielding layer 201 is provided on the lower surface of the light-transmitting cover plate 202 facing the multi-wavelength optical sensor 204.

[0018] Specifically, the first electromagnetic shielding layer 206 is made of conductive cloth or aluminum foil, which is bonded to the bottom of the mounting groove 203 with conductive adhesive; the second electromagnetic shielding layer 201 is made of flexible transparent electromagnetic shielding film, which is bonded to the lower surface of the light-transmitting cover 202 facing the multi-wavelength optical sensor 204 with conductive adhesive; through the first electromagnetic shielding layer 206 and the second electromagnetic shielding layer 201, electromagnetic interference generated by ambient light, vehicle vibration, and in-vehicle electrical equipment can be effectively eliminated during the signal acquisition process of the multi-wavelength optical sensor 204, thereby effectively improving the stability, reliability, and accuracy of the multi-wavelength optical sensor 204 in detecting and acquiring physiological signals such as driver's blood oxygen saturation and heart rate. The multi-wavelength optical sensor 204 includes a red LED with a wavelength of 660nm, an infrared LED with a wavelength of 940nm, a green LED with a wavelength of 530nm, and a blue LED with a wavelength of 470nm.

[0019] Specifically, an electric heating wire 4 is installed inside the wheel rim 3 below the biosignal detection component; a temperature sensor is also installed inside the wheel rim 3 next to the electric heating wire 4. The signal transmission end of the temperature sensor is connected to the signal transmission end of the vehicle ECU 6 inside the vehicle, and the vehicle ECU 6 is connected to the vehicle's central control screen 5. Through the touch setting function of the vehicle's central control screen 5, a comfortable grip temperature suitable for the driver can be set. Through the combined design of the biosignal detection component 2 and the electric heating wire 4, the multi-wavelength optical sensor 204 can maintain its working performance in low-temperature environments, while improving the driver's grip comfort.

[0020] Specifically, the light-transmitting cover 202 is made of light-transmitting silicone, polyurethane, or TPU. The upper surface of the light-transmitting cover 202 is arc-shaped to ensure that it matches the arc design of the wheel rim 3 of the steering wheel body 1. This ensures the overall appearance consistency and grip comfort of the wheel rim 3. Among them, high-end models prefer silicone material for the light-transmitting cover 202 because of its excellent light transmittance, flexibility, and high temperature resistance, which is suitable for the integration of high-precision multi-wavelength optical sensors 204. Mid-range models recommend TPU material for the light-transmitting cover 202 because of its excellent light transmittance and wear resistance, and moderate processing difficulty, which is suitable for mass production. Low-end models can choose polyurethane material for the light-transmitting cover 202, which meets basic performance requirements while reducing manufacturing costs, making it the preferred low-cost solution.

[0021] In addition, combined Figure 3The diagram shows the structure of an in-vehicle oxygen supply system. This embodiment of the present invention provides an in-vehicle oxygen supply system, including the multi-wavelength optical sensor 204 for the anti-interference biosignal detection steering wheel, and an in-vehicle oxygen generator 7, an in-vehicle ECU 6, and an in-vehicle central control screen 5 installed in the vehicle. The signal transmission end of the multi-wavelength optical sensor 204 for the anti-interference biosignal detection steering wheel is wirelessly connected to the signal transmission end of the in-vehicle ECU 6. The control signal output end of the in-vehicle ECU 6 is connected to the in-vehicle oxygen generator 7, and the in-vehicle central control screen 5 is connected to the in-vehicle ECU 6.

[0022] The multi-wavelength optical sensor 204 can detect and collect physiological signals such as the driver's blood oxygen saturation and heart rate in real time, and transmit these signals to the vehicle ECU 6. After analysis and processing by the vehicle ECU 6, the driver's blood oxygen saturation and heart rate data can be displayed in real time on the vehicle's central control screen 5. Simultaneously, the vehicle ECU 6 can determine whether the driver's blood oxygen saturation and heart rate data are within normal ranges. If abnormal conditions are detected (such as fatigue driving or altitude sickness during high-altitude driving), the vehicle ECU 6 automatically controls the vehicle's oxygen generator 7 to start working. After the vehicle's oxygen generator 7 releases sufficient oxygen into the vehicle, the driver's physiological indicators can return to normal. Once the driver's physiological indicators have returned to normal, the vehicle ECU 6 automatically controls the vehicle's oxygen generator 7 to stop working. Alternatively, when the driver's blood oxygen saturation and heart rate are normal, the vehicle's oxygen generator 7 can be manually turned on to obtain sufficient oxygen, maintain a better mental state, and ensure safe driving.

[0023] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. An interference-resistant bio-signal detection steering wheel, characterized by: The steering wheel body is provided with a biological signal detection assembly in the middle of the wheel rim, the biological signal detection assembly comprises a mounting groove, the mounting groove is embedded and fixed in the wheel rim, a multi-wavelength optical sensor, a flexible circuit board and a light-transmitting cover plate are arranged in the mounting groove, a first electromagnetic shielding layer is laid on the bottom of the mounting groove, the flexible circuit board is laid on the first electromagnetic shielding layer, the multi-wavelength optical sensor is attached to the flexible circuit board and is integrally connected with the flexible circuit board, the light-transmitting cover plate is arranged above the multi-wavelength optical sensor and is fixed at the upper end of the mounting groove, and a second electromagnetic shielding layer is arranged on the lower surface of the light-transmitting cover plate facing the multi-wavelength optical sensor.

2. The anti-interference biological signal detection steering wheel according to claim 1, characterized in that: The first electromagnetic shielding layer is made of conductive cloth or aluminum foil, and the conductive cloth or aluminum foil is fixed in the bottom of the mounting groove by conductive adhesive; the second electromagnetic shielding layer is made of a flexible transparent electromagnetic shielding film, and the flexible transparent electromagnetic shielding film is fixed on the lower surface of the light-transmitting cover plate facing the multi-wavelength optical sensor by conductive adhesive.

3. The anti-interference biological signal detection steering wheel according to claim 1, characterized in that: An electric heating wire is arranged in the wheel rim below the biological signal detection assembly.

4. The anti-interference biological signal detection steering wheel according to claim 1, characterized in that: The light-transmitting cover plate is made of light-transmitting silicone, polyurethane or TPU material, the upper surface of the light-transmitting cover plate is arranged in an arc shape to match the arc design of the wheel rim of the steering wheel body.

5. An in-vehicle oxygen supply system characterized by comprising: The anti-interference biological signal detection steering wheel comprises a multi-wavelength optical sensor, a vehicle-mounted oxygen generator, a vehicle-mounted ECU and a vehicle-mounted central control screen, the signal transmission end of the multi-wavelength optical sensor is connected with the signal transmission end of the vehicle-mounted ECU, the control signal output end of the vehicle-mounted ECU is connected with the vehicle-mounted oxygen generator, and the vehicle-mounted central control screen is connected with the vehicle-mounted ECU.

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