Blind spot inertia detection warning system

Abstract

A blind spot inertia detecting and warning system comprises a blind spot detecting unit, an inertia detecting unit, a warning unit and a processing unit. The blind spot detection unit is used for sensing and generating at least one piece of moving object speed information corresponding to at least one moving object. The inertia detection unit is used for sensing and generating body angular velocity information, body velocity information and body acceleration information corresponding to the riding vehicle. The processing unit is used for generating collision notification information according to the speed information of the at least one moving object, the body angular velocity information, the body velocity information and the body acceleration information, and driving the warning unit to generate at least one of emergency warning audio and emergency warning light according to the collision notification information; therefore, people around can be reminded at the first time, and precious rescue time can be gained.

Description

Technical Field

[0001] This utility model relates to a warning system, and more particularly to a blind spot inertial detection warning system. Background Technology

[0002] In recent years, blind spot detection has been widely used in the automotive and electric vehicle sectors to avoid driving risks caused by blind spots. Of course, blind spot detection can also be applied to motorcycles, bicycles, or electric-assisted bicycles, but the problem of blind spots is not serious when driving motorcycles, bicycles, or electric-assisted bicycles. Blind spot detection is more often used to detect accidents caused by collisions with other vehicles.

[0003] However, in the event of an accident, injuries sustained while riding a motorcycle, bicycle, or e-bike are often greater than those sustained while driving a car or electric vehicle. Clearly, simply applying blind spot detection to motorcycles, bicycles, or e-bikes does not provide complete protection. Utility Model Content

[0004] The purpose of this invention is to provide a blind spot inertial detection and warning system that can overcome the above-mentioned shortcomings.

[0005] This utility model relates to a blind spot inertial detection warning system, applicable to vehicles used for detecting at least one moving object. The system comprises a blind spot detection unit, an inertial detection unit, a warning unit, and a processing unit. The blind spot detection unit senses and generates at least one velocity information corresponding to the at least one moving object. The inertial detection unit senses and generates angular velocity, velocity, and acceleration information corresponding to the vehicle body. The warning unit is driven to generate at least one of an emergency warning sound and an emergency warning light. The processing unit is electrically connected to the blind spot detection unit, the inertial detection unit, and the warning unit. The processing unit receives the velocity information of the at least one moving object, the angular velocity information, the velocity information, and the acceleration information, and generates an impact notification indicating that the vehicle has been struck, based on these information. It then drives the warning unit to generate at least one of the emergency warning sound and the emergency warning light based on the impact notification information.

[0006] The blind spot inertial detection warning system of this utility model is applicable to signal connection to a smart device. The blind spot inertial detection warning system also includes a communication unit electrically connected to the processing unit and used for signal connection to the smart device, and an application program installed on the smart device. After the processing unit drives the warning unit to generate at least one of the emergency warning sound and the emergency warning light according to the impact notification information, it sends an external warning signal to the smart device via the communication unit, so that the application program generates a warning notification corresponding to the external warning signal.

[0007] The blind spot inertial detection warning system of this utility model includes a sound-generating module in the warning unit, which is used to generate the emergency warning sound through a drive.

[0008] The blind spot inertial detection warning system of this utility model includes a light-emitting module in the warning unit, which is used to generate the emergency warning light by being driven.

[0009] The blind spot inertial detection and warning system of this utility model further includes a memory unit electrically connected to the processing unit. The memory unit is used to store a distance threshold. The warning unit is also used to generate at least one of a warning sound and a warning light through a drive. The volume of the emergency warning sound is greater than the volume of the warning sound, and the brightness of the emergency warning light is greater than the brightness of the warning light. The processing unit is used to confirm that the riding vehicle is in motion based on the body angular velocity information, the body speed information, and the body acceleration information, and to obtain a first distance value indicating the shortest distance between the at least one moving object and the blind spot detection unit based on the speed information of the at least one moving object. When the processing unit determines that the first distance value is less than the distance threshold, it generates an approach notification message indicating that the first distance value is less than the distance threshold, and drives the warning unit to generate at least one of the warning sound and the warning light based on the approach notification message.

[0010] The blind spot inertial detection warning system of this utility model includes a processing unit that obtains a second distance value indicating the shortest distance between the front side of the moving object and the blind spot detection unit based on the speed information of at least one moving object. The processing unit multiplies the second distance value by a sine function corresponding to the azimuth angle value defined by the symmetrical reference plane of the moving object relative to the symmetrical reference plane of the riding vehicle, to calculate a third distance value indicating the shortest distance between the symmetrical reference plane of the moving object and the symmetrical reference plane of the riding vehicle. When the processing unit determines that the third distance value is less than half the sum of the width value of the moving object indicating its width and the width of the riding vehicle indicating its width, it generates at least one marker information corresponding to the at least one moving object.

[0011] The blind spot inertial detection warning system of this utility model includes a memory unit for storing an acceleration threshold and a tilt angle threshold. The processing unit, after generating the at least one marker information, obtains the first distance value based on the at least one marker information and the velocity information of the at least one moving object, obtains an acceleration value indicating the instantaneous acceleration of the riding vehicle based on the body acceleration information, and obtains a tilt angle value indicating the tilt angle of the riding vehicle based on the body angular velocity information. When the processing unit determines that the first distance value is essentially zero, the acceleration value is greater than the acceleration threshold, and the tilt angle value is greater than the tilt angle threshold, it generates the impact notification information.

[0012] The advantage of this invention is that the blind spot detection unit senses the speed information of at least one moving object, and the inertial detection unit senses the angular velocity information, speed information, and acceleration information of the vehicle body. This allows the processing unit to generate a collision notification message indicating that the vehicle has been hit, based on the speed information of the at least one moving object, the angular velocity information, speed information, and acceleration information of the vehicle body. This provides an immediate warning to people in the surrounding area, thus buying valuable rescue time for the user of the hit vehicle. Attached Figure Description

[0013] Other features and effects of this utility model will be clearly presented in the embodiments with reference to the drawings, wherein:

[0014] Figure 1 This is a block diagram of an embodiment of the blind spot inertial detection and warning system and an intelligent device of this utility model;

[0015] Figure 2 This is a side view of the embodiment being installed in a riding vehicle;

[0016] Figure 3This is a top view schematic diagram of the embodiment, the riding vehicle, and the two moving objects;

[0017] Figure 4 This is a rear-view schematic diagram of the embodiment set in the riding vehicle. Detailed Implementation

[0018] See Figures 1 to 3 This utility model discloses an embodiment of a blind spot inertial detection and warning system, applicable to a vehicle 91 for detecting multiple moving objects 92, and applicable to a signal connection to a smart device 93. The vehicle 91 is one of a bicycle, electric-assisted bicycle, electric two-wheeler, human-powered tricycle, electric tricycle, or motorcycle. The moving objects 92 are one of a car, truck, articulated vehicle, or trailer. The smart device 93 is a smartphone or tablet computer. To briefly describe the method of detecting the moving objects 92 in this embodiment, unless otherwise specified in the following paragraphs, the following text will use the term "blind spot inertial detection warning system". Figure 3 Let's take one of the moving objects 92 located at the top as an example for illustration.

[0019] The embodiment includes a blind spot detection unit 1, an inertial detection unit 2, an alert unit 3, a communication unit 4, a memory unit 5, a processing unit 6, and an application program 7 installed on the smart device 93. In this embodiment, the blind spot detection unit 1, the inertial detection unit 2, the communication unit 4, the memory unit 5, and the processing unit 6 are integrated into a blind spot inertial detection device 100 disposed on the rear side of a seat cushion 911 of the riding vehicle 91.

[0020] The blind spot detection unit 1 is disposed on the rear side of the seat 911 of the riding vehicle 91 and is used to sense and generate a moving object speed information corresponding to the moving object 92. The blind spot detection unit 1 defines a sensing range, and the moving object speed information corresponds to the moving object 92 located within the sensing range. The moving object speed information has a moving object speed value indicating the moving speed of the moving object 92, a first distance value indicating the shortest distance S between the moving object 92 and the blind spot detection unit 1, a second distance value indicating the shortest distance D between the front side of the moving object 92 aligned with the symmetrical reference plane P2 and the blind spot detection unit 1, an azimuth angle value indicating the azimuth angle θ1 defined by the front side of the moving object 92 aligned with the symmetrical reference plane P2 relative to the symmetrical reference plane P1 of the riding vehicle 91, and a moving object width value indicating the width W2 of the moving object 92. Furthermore, the blind spot detection unit 1 is also used to sense and generate a body width value indicating the width W1 of the riding vehicle 91. In this embodiment, the blind spot detection unit 1 is implemented by a millimeter-wave radar sensor or other components with similar functions. Through steps such as emitting millimeter-wave signals of a specific frequency, receiving echo signals, and analyzing echo signals, it can not only calculate the moving speed of the moving object 92 using the Doppler effect, but also calculate the distance between multiple reflection points of the moving object 92 and the blind spot detection unit 1 based on the phase difference of each echo signal, as well as other data calculated indirectly.

[0021] The inertial detection unit 2 is disposed on the rear side of the seat 911 of the riding vehicle 91, and is used to sense and generate a body angular velocity information, a body velocity information, and a body acceleration information corresponding to the riding vehicle 91. In this embodiment, the inertial detection unit 2 is implemented by a gyroscope and an accelerometer.

[0022] The warning unit 3 is disposed on the riding vehicle 91 and is used to generate at least one of an emergency warning sound and an emergency warning light, and to generate at least one of a warning sound and a warning light, respectively, by being driven. The volume of the emergency warning sound is greater than the volume of the warning sound, and the brightness of the emergency warning light is greater than the brightness of the warning light. In this embodiment, the warning unit 3 is disposed on the front side of a handlebar 912 of the riding vehicle 91. However, in a variation of this embodiment, the warning unit 3 and the blind spot inertial detection device 100 are jointly disposed on the rear side of the seat 911, and this embodiment is not limited thereto.

[0023] In other words, the emergency warning sound and the emergency warning light are applied to relatively urgent scenarios, such as collisions or falls. The warning sound and the warning light are then applied to scenarios where an accident is anticipated, such as when the moving object 92 gradually approaches the vehicle 91.

[0024] In this embodiment, the warning unit 3 includes a sound-generating module 31 for generating the emergency warning sound through a drive, and a light-emitting module 32 for generating the emergency warning light through a drive. However, in a variation of this embodiment, the warning unit 3 may also include only the sound-generating module 31 or the light-emitting module 32 to generate the emergency warning sound / the warning sound or the emergency warning light / the warning light.

[0025] The communication unit 4 is electrically connected to the processing unit 6 and is used for signal connection to the smart device 93. In this embodiment, the communication unit 4 may be implemented by hardware such as a Bluetooth module or a LoRa communication module.

[0026] The memory unit 5 is electrically connected to the processing unit 6 and is used to store a distance threshold, an acceleration threshold, and a tilt angle threshold. In this embodiment, the memory unit 5 is implemented by a flash ROM electrically connected to the processing unit 6.

[0027] The processing unit 6 is electrically connected to the blind spot detection unit 1, the inertial detection unit 2, and the warning unit 3. In this embodiment, the processing unit 6 can be implemented using hardware such as a field-programmable gate array (FPGA), a microprocessor, or a system-on-a-chip.

[0028] In practice, the specific process is as follows:

[0029] Step 1: The processing unit 6 confirms that the riding vehicle 91 is in a driving state based on the body angular velocity information, the body speed information, and the body acceleration information. More precisely, when the processing unit 6 determines that a body speed value indicated by the body speed information is greater than 5 kilometers per hour, it determines that the riding vehicle 91 is in the driving state.

[0030] Step 2: The processing unit 6 determines whether the first distance value is less than the distance threshold based on the speed information of the moving object, so as to generate an approach notification message indicating that the first distance value is less than the distance threshold.

[0031] Step 3: The processing unit 6 drives the warning unit 3 to generate at least one of the warning sound and the warning light based on the approach notification information. That is, the user of the riding vehicle 91 is warned of the approaching moving object 92 by at least one of the warning sound and the warning light, i.e., the purpose of warning is achieved by sound and / or light.

[0032] Step 4: The processing unit 6 obtains the second distance value, the azimuth angle value, the body width value, and the width value of the moving object based on the speed information of the moving object, thereby pre-determining whether the moving object 92 and the vehicle 91 belong to the same lane. Specifically, the processing unit 6 calculates a third distance value, indicating the shortest distance Y between the symmetrical reference plane P2 of the moving object 92 and the symmetrical reference plane P1 of the vehicle 91, according to the following formula: Y = D × sin(θ1). That is, the second distance value (shortest distance D) is multiplied by the sine function corresponding to the azimuth angle value (azimuth angle θ1). When the third distance value is greater than half of the sum of the width value of the moving object and the body width value, it means that the moving object 92 and the vehicle 91 do not belong to the same lane, and there is no need to consider the risk of the moving object 92 colliding with the vehicle 91. When the third distance value is less than half of the sum of the width of the moving object and the width of the body, a marker information corresponding to the moving object 92 is generated, indicating that the riding vehicle 91 is at risk of being rear-ended by the moving object 92, and the following detection process (steps five to seven) needs to be executed.

[0033] Step 5, Refer to Figure 1 , Figure 2 and Figure 4 After generating the marker information, the processing unit 6 obtains the first distance value based on the marker information and the velocity information of the moving object, and obtains an acceleration value indicating the instantaneous acceleration of the riding vehicle 91 based on the body acceleration information. Then, it obtains a tilt angle value indicating the tilt angle θ2 of the riding vehicle 91 relative to a vertical reference plane P3 based on the body angular velocity information, in order to perceive the relative relationship between the moving object 92 and the riding vehicle 91. In this embodiment, the tilt angle threshold is 15 degrees, and the acceleration threshold is 1.5 meters per second squared (m / s). ).

[0034] Furthermore, if the processing unit 6 cannot obtain the first distance value based on the speed information of the moving object, it may be because the shortest distance S between the moving object 92 and the blind spot detection unit 1 is too small to be distinguished. In this case, the first distance value obtained by the processing unit 6 is actually zero.

[0035] Step Six: When the processing unit 6 determines that the first distance value is essentially zero, the acceleration value is greater than the acceleration threshold, and the tilt angle value is greater than the tilt angle threshold, it generates an impact notification message indicating that the riding vehicle 91 has been impacted. Then, based on the impact notification message, it drives the warning unit 3 to generate at least one of the emergency warning sound and the emergency warning light. Generally, when the riding vehicle 91 is impacted, it usually meets all three of the above conditions simultaneously; therefore, these three conditions are used as the judgment criteria.

[0036] Step 7: After the processing unit 6 drives the warning unit 3 to generate at least one of the emergency warning sound and the emergency warning light according to the impact notification information, the sound and / or light are used to achieve the purpose of calling for help. Furthermore, an external warning signal is sent to the smart device 93 via the communication unit 4, so that the application 7 generates a warning notification corresponding to the external warning signal, thereby sending the warning notification to the emergency rescue unit (police station, fire station, or hospital) via a neighboring base station.

[0037] In summary, this embodiment has the following advantages:

[0038] (I) In this embodiment, the blind spot detection unit 1 senses the speed information of the moving object, and the inertial detection unit 2 senses the angular velocity information, speed information and acceleration information of the body, so that the processing unit 6 generates the impact notification information indicating that the riding vehicle 91 has been hit based on the moving object speed information, the body angular velocity information, the body speed information and the body acceleration information, so as to alert the surrounding crowd at the first time, thereby gaining valuable rescue time for the user of the riding vehicle 91 that has been hit.

[0039] (ii) In this embodiment, the communication unit 4 communicates with the application 7 installed on the smart device 93 so that the application 7 generates the warning notification to the emergency rescue unit accordingly, thereby buying valuable rescue time for the user of the vehicle 91 that has been hit.

[0040] Therefore, the blind spot inertial detection warning system of this utility model, which combines the blind spot detection unit 1 and the inertial detection unit 2 to call for help and assistance in the first time, can indeed achieve the purpose of this utility model.

[0041] However, the above description is merely an embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Any simple equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the patent specification of this utility model shall still fall within the scope of this utility model patent.

Claims

1. A blind spot inertial detection warning system, applicable to be installed on a bicycle to detect at least one moving object, characterized in that: The blind spot inertial detection warning system includes a blind spot detection unit, an inertial detection unit, a warning unit, and a processing unit. The blind spot detection unit is used to sense and generate at least one moving object speed information corresponding to the at least one moving object. The inertial detection unit is used to sense and generate body angular velocity information, body velocity information, and body acceleration information corresponding to the vehicle. The warning unit is used to generate at least one of an emergency warning sound and an emergency warning light through a drive. The processing unit is electrically connected to the blind spot detection unit, the inertial detection unit, and the warning unit. The processing unit is used to receive the at least one moving object speed information, the body angular velocity information, the body velocity information, and the body acceleration information, and generate an impact notification information indicating that the vehicle has been hit based on the at least one moving object speed information, the body angular velocity information, the body velocity information, and the body acceleration information. Then, based on the impact notification information, it drives the warning unit to generate at least one of the emergency warning sound and the emergency warning light.

2. The blind spot inertial detection and warning system according to claim 1, characterized in that: The blind spot inertial detection warning system, which is applicable to signal connection to a smart device, also includes a communication unit electrically connected to the processing unit and for signal connection to the smart device, and an application program installed on the smart device. After the processing unit drives the warning unit to generate at least one of the emergency warning sound and the emergency warning light according to the impact notification information, it sends an external warning signal to the smart device via the communication unit, so that the application program generates a warning notification corresponding to the external warning signal.

3. The blind spot inertial detection and warning system according to claim 1, characterized in that: The warning unit includes a sound-generating module, which is driven to generate the emergency warning sound.

4. The blind spot inertial detection and warning system according to claim 1, characterized in that: The warning unit includes a light-emitting module, which is driven to generate the emergency warning light.

5. The blind spot inertial detection and warning system according to claim 1, characterized in that: It also includes a memory unit electrically connected to the processing unit, the memory unit being used to store a distance threshold, and the warning unit being used to generate at least one of a warning sound and a warning light, wherein the volume of the emergency warning sound is greater than the volume of the warning sound, and the brightness of the emergency warning light is greater than the brightness of the warning light. The processing unit is used to confirm that the riding vehicle is in motion based on the body angular velocity information, the body speed information, and the body acceleration information, and to obtain a first distance value indicating the shortest distance between the at least one moving object and the blind spot detection unit based on the speed information of the at least one moving object. When the processing unit determines that the first distance value is less than the distance threshold, it generates an approach notification message indicating that the first distance value is less than the distance threshold, and drives the warning unit to generate at least one of the warning sound and the warning light based on the approach notification message.

6. The blind spot inertial detection and warning system according to claim 5, characterized in that: The processing unit is configured to obtain a second distance value indicating the shortest distance between the front side of the moving object and the blind spot detection unit based on the speed information of the at least one moving object, and multiply the second distance value by a sine function corresponding to the azimuth angle value defined by the symmetrical reference plane of the moving object relative to the symmetrical reference plane of the riding vehicle, so as to calculate a third distance value indicating the shortest distance between the symmetrical reference plane of the moving object and the symmetrical reference plane of the riding vehicle. When the processing unit determines that the third distance value is less than half of the sum of the width value of the moving object indicating the width of the moving object and the body width value indicating the width of the riding vehicle, at least one mark information corresponding to the at least one moving object is generated.

7. The blind spot inertial detection and warning system according to claim 6, characterized in that: The memory unit is also used to store acceleration threshold and tilt angle threshold. The processing unit is used to obtain the first distance value based on the at least one marker information and the velocity information of the at least one moving object after generating the at least one marker information, and to obtain the acceleration value indicating the instantaneous acceleration of the riding vehicle based on the body acceleration information, and then to obtain the tilt angle value indicating the tilt angle of the riding vehicle based on the body angular velocity information. When the processing unit determines that the first distance value is actually zero, the acceleration value is greater than the acceleration threshold, and the tilt angle value is greater than the tilt angle threshold, the impact notification information is generated.

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