TW201820280A - Safety warning device and wearable device having the same - Google Patents

Abstract

A safety warning device, applied to a wearable device, includes a video recorder, a processor and an alarm. The video recorder records a plurality of successive frames, which is related to at least the scene behind the wearable device. The processor is electrically connected to the video recorder and outputs a driving signal when an object appearing in the successive frames has a speed higher than a warned speed and a relative distance between the object and the safety warning device is smaller than or equal to a warned distance. The alarm is electrically connected to the processor and warns according to the driving signal. Therefore, an active danger prevention mechanism is achieved.

Description

Safety alert device and wearable device with safety alert device

The present invention relates to a driving safety protection mechanism, and more particularly to a safety warning device capable of providing an active danger prevention mechanism and a wearing device having a safety warning device.

Whether the helmet is an important bicycle in Taiwan or in other countries around the world, the penetration rate is quite high. In the past, helmets only focused on safety. However, in recent years, with the continuous development of technology and the increasing demand for safe driving and convenience, it has become a trend for helmets to be paired with novel technologies.

Most of the helmets are currently passive protection, which means they can be used to protect the head from accidents in the event of an accident. Therefore, if the helmet can be combined with an active hazard prevention mechanism, it will greatly reduce the chance of a motorcycle rider's car accident.

The invention provides a safety warning device and a wearing device with a safety warning device, which can solve the existing danger by actively detecting the traveling condition of the vehicle around the user and actively alert the user according to the detection result, thereby solving the existing safety helmet. The problem of proactive hazard prevention mechanisms is not available.

According to an embodiment, the present invention provides a security alert device that is suitable for use in a wearable device that includes an image frame camera, a processor, and a warning device. The image frame camera is used to capture a plurality of consecutive image frames that are at least related to the scene behind the wearable device. The processor is electrically connected to the image frame camera, and the processor is configured to: when a moving speed of an object appearing in the image frames exceeds a warning speed and a relative distance between the object and the safety warning device is less than or equal to a warning distance , output a warning drive signal. The alarm is electrically connected to the processor, and the alarm is used to issue an alert according to the warning driving signal.

According to another embodiment, the processor outputs an alert driving signal when the moving direction of the object is toward the security alert device.

According to still another embodiment, each image frame has a corresponding shooting time point, and the processor compares the image frames through a ranging model to estimate the relative relationship between the object and the security alert device in each image frame. The distance, and the processor calculates the moving speed of the object based on the relative distances and the corresponding shooting time points.

According to still another embodiment, the ranging model is a preset ranging model, or the ranging model is: after the image frame camera captures a still image frame and the processor analyzes the still image frame to obtain an image frame coordinate data. The processor is established according to a relationship between an image frame coordinate and an actual distance and an image frame coordinate data.

According to still another embodiment, the processor further adjusts the ranging model according to the height of a user, the model of a vehicle in which the user is located, or a combination thereof.

According to still another embodiment, the safety alert device further includes a positioner. The locator is electrically connected to the processor, and the locator is configured to detect the location of the security alert device to generate a corresponding location information. The processor further searches for a location corresponding speed limit relationship table according to the location information to obtain the alert speed corresponding to the location information.

According to still another embodiment, the image frames are more related to the scene in front of the wearable device, and when the object is present in the scene in front of the wearable device, and the processor determines the moving direction and safety alert of the object. When the moving direction of the device intersects at a meeting point, the processor estimates a first estimated time required for the object to reach the meeting point and estimates a second estimated time required for the safety alert device to reach the meeting point, when the first When the difference between the estimated time and the second estimated time is less than a safety alert value, the processor outputs a warning driving signal.

According to an embodiment, the present invention provides a wearable device comprising the security alert device of one of the above embodiments.

According to an embodiment, the wearable device is a safety helmet.

The security alert device disclosed by the present invention captures a plurality of consecutive image frames connected to at least the scene behind the wearable device by the image frame camera, and a moving speed of an object appearing in the image frames through the processor exceeds one When the warning speed and a relative distance between the object and the safety warning device are less than or equal to a warning distance, an alarm driving signal is output to cause the warning device to issue a warning. In this way, the user can obtain the safety prompts provided by the safety warning device, thereby avoiding the danger that may occur early. The invention relates to a safety warning device and can solve the problem of lack of active safety detection of the existing traffic in the existing Internet of Things architecture.

The above description of the disclosure and the following description of the embodiments of the present invention are intended to illustrate and explain the spirit and principles of the invention, and to provide further explanation of the scope of the invention.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a security alert device disposed on a wearable device according to an embodiment of the invention, and FIG. 2 is a schematic diagram of a security alert device according to an embodiment of the invention. Functional block diagram. As shown, the security alert device 1 is suitable for a wearable device, and the security alert device 1 includes an image frame camera 10, a storage device 20, a processor 30, and a warning device 40. The processor 30 is electrically connected to the image frame camera 10, the storage device 20, and the alarm device 40.

The wearable device 2 can be, for example, a safety helmet, a hat or other device that can be installed or provided with the automatic help device 1 and that can be worn by the user. In order to clarify the contents of the present invention, the following embodiments are all examples of wearing the helmet worn by the locomotive knight as shown in FIG. Although in the illustration, the wearable device 2 is a hard hat worn by a locomotive rider as an example, the present invention does not limit the type of the wearable device 2 herein.

In one embodiment, the safety alert device 1 is removably disposed on the wear device 2; in another embodiment, the safety alert device 1 can be fabricated directly on the wear device 2 and partially or fully exposed to wear. In addition to the device 2; in still another embodiment, the safety alert device 1 can be directly embedded in the wear device 2. Although the safety alert device 1 is disposed on the wearable device 2 and exposed to the wearable device 2, the present invention does not limit the manner in which the safety alert device 1 is disposed on the wearable device 2 herein.

The image frame camera 10 is configured to capture a plurality of consecutive image frames and store the image frames in the storage 20. In an embodiment, the image frame camera 10 can be a rear view lens, and thus the image frames obtained by the image frame camera 10 are related to the scene behind the wearable device. In another embodiment, the image frame camera 10 can be a panoramic lens, so that the image frames obtained by the image frame camera 10 are more related to the scene in front of the wearable device, except for the scenes that are related to the rear of the wearable device. However, the present invention does not limit the implementation of the image frame camera 10.

The processor 30 is configured to output when a moving speed of an object such as a vehicle in the image frame exceeds a warning speed, and a relative distance between the object and the safety alert device 1 is less than or equal to a warning distance. A warning drive signal. In other words, when the object enters a warning range centered on the safety alert device 1 at a speed higher than a certain degree, the processor 30 outputs an alert driving signal to the alerter 40 to cause the alerter 40 to issue a warning. . Specifically, the image frames obtained by the image frame camera 10 respectively have corresponding shooting time points, so the processor 30 can compare the image frames through a ranging model to estimate the image frame. The relative distance between the object and the safety alert device 1 is as shown in FIG. Moreover, the processor 30 can calculate the moving speed of the object according to the relative distances and the corresponding shooting time points. The processor 30 outputs an alert driving signal as long as the object enters the alert range with the alert distance as a radius at a speed higher than or equal to the alert speed. For example, the ranging model may be based on the underside of the vehicle in the image frame as a measurement reference. When a relative distance between the lower portion of the vehicle and the safety alert device 1 is less than or equal to a warning distance, the processor 30 outputs a Alert drive signal.

In an embodiment, the ranging model is a preset ranging model. That is to say, the ranging model is established based on the data of the existing analysis database before the safety warning device 1 is shipped from the factory. In another embodiment, the ranging model is established by image frames obtained by instant shooting after the safety alert device 1 is shipped. In detail, the processor 30 has a relationship between the image frame coordinates and the actual distance. Therefore, after the image frame camera 10 captures a still image frame and the processor 30 analyzes the still image frame to obtain an image frame coordinate data, The processor 30 is configured according to the relationship between the image frame coordinates and the actual distance and the image frame coordinate data.

In addition, since the height of the user or the height of the riding vehicle affects the height of the image frame captured by the image frame camera 10 of the security alert device 1, which may affect the estimation of the distance between the security alert device 1 and the object, Therefore, in an embodiment, the processor 30 can further adjust the ranging model according to the height of the user, the model of a vehicle in which the user is located, or a combination thereof. In detail, the user can input his own height, the model of the riding vehicle or other parameter data to the safety alert device 1 through the additional application software or the input operation interface of the safety alert device 1, or change these parameters. data. In this way, the fine-tuned ranging model can meet the needs of actual ranging.

In other embodiments, the processor 30 determines a moving direction of the object through the image frame analysis technique, and when the moving direction of the object faces the security alert device 1, the processor 30 outputs the above-mentioned alert driving signal. In other words, the safety alert device 1 only alerts the rear vehicle, but ignores the vehicle located behind the user but opposite to the direction of travel of the user's vehicle. In this way, the situation of false alarms can be avoided.

In addition, due to different regions, different road sections will have different speeds. For example, the upper limit speed in urban areas is about 50 km, and the upper limit speed on highways is about 90 km. Therefore, if the appropriate warning speed can be selected according to these situations, the situation of warning false alarms can be greatly reduced. Referring to FIG. 2 again, the security alert device 1 further includes a locator 50. The locator 50 is electrically connected to the processor 30, and the locator 50 is configured to detect the location of the security alert device 1 to generate a corresponding location information. The processor 30 further searches for a location corresponding speed limit relationship table according to the location information to obtain a warning speed corresponding to the location information.

The above is a warning to the vehicle behind the user. However, the present invention can further alert the left and right vehicles in front of the user. Please refer to FIG. 4 , which is a schematic diagram of a user's vehicle and a left and right vehicle according to an embodiment of the invention. Through the front view lens or the full-motion lens, the plurality of image frames obtained by the image frame camera 10 of the security alert device 1 can be related to the scene in front of the wearable device 2, and when the object appears in the wear frame of the image frames In the front scene, and the processor 30 determines that the moving direction of the object and the moving direction of the safety alert device 1 intersect at a meeting point, the processor 30 estimates a first estimate required for the object to reach the meeting point. Time and estimate a second estimated time required for the safety alert device 1 to reach this intersection. When the difference between the first estimated time and the second estimated time is less than a safety alert value, the processor 30 outputs an alert driving signal.

In practice, the processor 30 first analyzes the plurality of image frames captured by the image frame camera 10 by using the image frame analysis technology and the above-mentioned ranging method to obtain the user's vehicle 3 (ie, the safety alert device 1) The linear distance L to the left of the vehicle 4, the speed and moving direction of the user's vehicle 3, and the speed and moving direction of the left vehicle 4. After obtaining the moving direction of the user's vehicle 3 and the left incoming vehicle 4, the processor 30 can estimate the point 5 at which the user's vehicle 3 and the left incoming vehicle 4 may meet by trigonometric function. After knowing the position of the intersection point 5, the processor 30 further estimates the distance of the user's vehicle 3 to the intersection point 5 and estimates the distance from the left vehicle 4 to the intersection point 5. Using the speed of the user's vehicle 3 and the distance of the user's vehicle 3 to the intersection 5, the processor 30 can calculate a first estimated time required by the user's vehicle 3 from the current location to the meeting point 5. . At the same time, by using the speed of the left car 4 and the distance of the left car 4 to the intersection point 5, the processor 30 can calculate a second pre desired for the left car 4 to go from the current position to the meeting point 5. Estimate time. When the difference between the first estimated time and the second estimated time is less than a safety alert value, it indicates that the user's vehicle 3 and the left incoming car 4 are likely to arrive at the meeting point 5 at approximately the same time. That is to say, the user's vehicle 3 and the left-handed vehicle 4 are likely to collide. At this time, the processor 30 outputs an alert driving signal to cause the alerter 40 to issue an alert to remind the user.

Referring to FIG. 2 again, in an embodiment, the above-mentioned alarm 40 can be, for example, an indicator light, a buzzer, other sound-emitting devices, or any combination thereof. The present invention does not limit the implementation of the alerter 40.

In summary, the security alert device of the present invention captures at least a plurality of consecutive image frames of a scene related to the rear of the wearable device by the image frame camera, and a movement of an object appearing in the image frames by the processor. When the speed exceeds a warning speed and a relative distance between the object and the safety warning device is less than or equal to a warning distance, an alarm driving signal is output to cause the warning device to issue a warning. In this way, the user can obtain the safety prompts provided by the safety warning device, thereby avoiding the danger that may occur early.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

1‧‧‧Safety warning device

2‧‧‧Wearing device

3‧‧‧User's vehicle

4‧‧‧The left side comes to the car

5‧‧‧交点点

10‧‧‧Image Frame Camera

20‧‧‧Storage

30‧‧‧ Processor

40‧‧‧ warning device

50‧‧‧Locator

L‧‧‧Linear distance

FIG. 1 is a schematic diagram of a security alert device disposed on a wearable device according to an embodiment of the invention. FIG. 2 is a functional block diagram of a security alert device according to an embodiment of the invention. FIG. 3 is a schematic diagram of an image frame obtained by comparing and shooting a ranging model according to an embodiment of the invention. FIG. 4 is a schematic diagram of a user's vehicle and left and right vehicles according to an embodiment of the invention.

Claims (10)

A security warning device, suitable for a wearable device, comprising: an image frame camera for capturing a plurality of consecutive image frames, the image frames being at least related to a scene behind the wearable device; a processor, electrically connected In the image frame camera, the processor is configured to: when a moving speed of an object appearing in the image frames exceeds a warning speed and a relative distance between the object and the safety alert device is less than or equal to a warning distance And outputting an alert driving signal; and a warning device electrically connected to the processor, the alerting device is configured to issue a warning according to the warning driving signal. The security alert device of claim 1, wherein the processor outputs the alert driving signal when the moving direction of the object is toward the security alert device. The security alert device of claim 1, wherein each of the image frames has a corresponding shooting time point, and the processor further compares the image frames by using a ranging model to estimate each of the image frames. The relative distance between the object and the safety alert device, and the processor calculates the moving speed of the object according to the relative distances and the corresponding shooting time points. The security alert device of claim 3, wherein the ranging model is a preset ranging model, or the ranging model is to capture a still image frame at the image frame camera and analyze the static image by the processor. After obtaining an image frame coordinate data, the processor is established according to a relationship between an image frame coordinate and an actual distance and the image frame coordinate data. The security alert device of any one of claims 3 to 4, wherein the processor further adjusts the ranging model according to a user's height, a model of a vehicle in which the user is located, or a combination thereof. The security alert device of any one of the claims 3 to 4, further comprising: a locator electrically connected to the processor, the locator for detecting the location of the security alert device, thereby generating a corresponding a location information; wherein the processor further searches for a location corresponding speed limit relationship table according to the location information to obtain the alert speed corresponding to the location information. The security alert device of any one of claims 3 to 4, wherein the image frames are more related to a scene in front of the wearable device, and when the object appears in front of the wearable device in the image frames In the scene, and when the processor determines that the moving direction of the object intersects the moving direction of the security alert device at a meeting point, the processor estimates a first required for the object to reach the meeting point Estimating time and estimating a second estimated time required for the safety alert device to reach the intersection point, when the difference between the first estimated time and the second estimated time is less than a safety alert value, The processor outputs the alert drive signal. The safety alert device of claim 1, wherein the wearable device is a safety helmet. A wearable device comprising the security alert device of one of the claims of claims 1-8. The wearing device of claim 9, wherein the wearing device is a safety helmet.