CN108510732B - Walking prompting method and system based on moving speed concretization - Google Patents
Walking prompting method and system based on moving speed concretization Download PDFInfo
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- CN108510732B CN108510732B CN201810519710.3A CN201810519710A CN108510732B CN 108510732 B CN108510732 B CN 108510732B CN 201810519710 A CN201810519710 A CN 201810519710A CN 108510732 B CN108510732 B CN 108510732B
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Abstract
The invention discloses a walking prompting method and a walking prompting system based on moving speed concretization, which comprises the steps of obtaining a first image in front of the moving direction of a user; judging whether a traffic signal lamp exists in the first image or not; if so, extracting color information and countdown information of the traffic signal lamp, wherein the color information comprises a red light state, a green light state and a yellow light state; judging whether the traffic signal lamp is in a green state or not; if yes, acquiring a first speed of the current walking of the user; calculating a first distance between a user and a traffic signal lamp; calculating first time when the user arrives at the traffic signal lamp according to the first distance and the first speed; judging whether the first time is greater than the time included in the countdown information; if so, calculating a second speed according to the countdown information and the first distance, wherein the second speed is the minimum speed for the user to reach a traffic signal lamp when the countdown is finished; extracting a prompt level corresponding to the second speed; and outputting the second speed to the user according to the prompt level.
Description
Technical Field
The invention relates to the field of traffic, in particular to a walking prompting method and a walking prompting system based on specific moving speed.
Background
Most people do not have intuitive understanding on self walking speed and distance, and only have fuzzy concepts on the two, but the fuzzy concepts and actual data have large gap, which has certain negative influence on daily life of people.
For example, when walking out, walking itself is slow and easily affects the route, and if it is stopped by a traffic light, the route is further affected, and therefore, it is necessary to accelerate the passage in the green stage. At present, most of the situations are that when the time for people to finish the green light countdown is long and the distance from the traffic signal lamp is far, the walking speed of people reaching the opposite road surface before the green light countdown is finished cannot be accurately estimated, most of people cannot change the original walking speed under the condition that the time for the green light countdown is enough, when the countdown is finished, the people find that the people cannot reach the opposite road surface, and at the moment, the people hasten hurriedly, so that certain potential safety hazards exist.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the disadvantages in the background art, embodiments of the present invention provide a walking prompting method and system based on a specific moving speed, which can effectively solve the problems related to the background art.
The technical scheme is as follows: a walking prompting method based on moving speed materialization comprises the following steps:
101: acquiring an image in front of a user moving direction, and storing the image as a first image;
102: judging whether a traffic signal lamp exists in the first image or not;
103: if so, extracting color information and countdown information of the traffic signal lamp, wherein the color information comprises a red light state, a green light state and a yellow light state;
104: judging whether the traffic signal lamp is in a green state or not according to the color information;
105: if yes, acquiring the current walking speed of the user, and storing the walking speed as a first speed;
106: calculating the distance between a user and the traffic signal lamp according to the first image, and storing the distance as a first distance;
107: calculating the time of the user reaching the traffic signal lamp according to the first distance and the first speed, and storing the time as first time;
108: judging whether the first time is greater than the time included in the countdown information;
109: if so, calculating a second speed according to the countdown information and the first distance, wherein the second speed is the minimum speed for the user to reach the traffic signal lamp when the countdown is finished;
110: extracting a prompt level corresponding to the second speed from a database;
111: and outputting the second speed to a user according to the prompt level.
As a preferred embodiment of the present invention, the present invention further comprises:
acquiring images on the left side and the right side of the moving direction of a user, and storing the images as second images;
judging whether a moving obstacle exists in the second image;
if yes, extracting the moving obstacle;
acquiring the position information and the moving speed of the moving obstacle;
acquiring position information and walking speed of a user;
judging whether the user meets the moving barrier or not;
if yes, outputting warning information to the user.
As a preferred embodiment of the present invention, after outputting the warning information to the user, the method further includes:
calculating the distance between the moving obstacle and the user, and storing the distance as a second distance;
judging whether the second distance has a trend of decreasing;
if so, judging whether the second distance is smaller than or equal to a preset distance;
and if so, outputting the deceleration information to the user.
As a preferred embodiment of the present invention, the method further comprises, after outputting the deceleration information to the user:
acquiring a first speed of current walking of a user;
judging whether the first speed has a trend of decreasing;
if not, the warning information is output to the outside.
As a preferred aspect of the present invention, calculating the second speed based on the countdown information and the first distance further includes:
the system is internally provided with a preset speed, and the preset speed is the maximum speed accepted by a user;
judging whether the second speed is greater than the preset speed or not;
and if so, prompting.
As a preferred aspect of the present invention, the extracting the color information and the countdown information of the traffic signal further includes:
judging whether the traffic signal lamp has countdown information or not;
if yes, extracting the countdown information;
if not, judging whether the traffic signal lamp is in a green lamp or yellow lamp state according to the color information;
and if so, outputting the deceleration information to the user.
As a preferable aspect of the present invention, after outputting the second speed to the user according to the prompt level, the method further includes:
acquiring a first speed of current walking of a user;
judging whether the first speed is greater than or equal to the second speed;
and if not, continuously outputting the speed to the user until the acquired first speed is greater than or equal to the second speed.
As a preferable aspect of the present invention, after outputting the second speed to the user according to the prompt level, the method further includes:
the system is internally provided with a preset time length, and the steps 105 to 111 are repeated after the preset time length passes.
A walking prompt system based on moving speed concretization comprises a first camera, a second camera, a third camera, an intelligent wearable device and a vibration module, wherein the first camera is configured to obtain an image in the front of a moving direction of a user, the second camera is configured to obtain an image in the left side of the moving direction of the user, the third camera is configured to obtain an image in the right side of the moving direction of the user, the vibration module is arranged in the intelligent wearable device, and the vibration module is configured to output second speed to the user in a vibration mode according to prompt levels and output warning information and deceleration information to the user.
As a preferable mode of the present invention, the wearable intelligent device further includes an audio module built in the wearable intelligent device, and the audio module is further configured to output the second speed to the user in a form of voice according to a prompt level, and output warning information and deceleration information to the user.
The invention realizes the following beneficial effects:
the walking prompting method based on the concretization of the moving speed can help a user accurately adjust the walking speed to quickly reach the opposite surface of a road when a traffic signal lamp is in a green light stage, and the time wasted by waiting for a red light is reduced; in the process of accelerating movement of a user, automatically identifying moving obstacles on two sides of the moving direction of the user, simulating a motion curve graph of the moving obstacles and the user, and outputting warning information to the user through a vibration module or an audio module when the moving obstacles and the user possibly meet each other; before the motion curves meet, dynamically monitoring a moving obstacle, and outputting deceleration information to a user through a vibration module or an audio module when the distance between the moving obstacle and the user is smaller than or equal to a preset distance; except that the single side outputs the deceleration information and the warning information to the user, when the user does not reduce the walking speed, the warning information is also output to the outside through the audio device; when the recommended speed is higher than the maximum speed accepted by the user, automatically shielding useless prompt information; when the traffic light does not comprise the countdown timer, automatically prompting the user to slow down when the traffic light is in a non-red light state; after the user receives the prompt signal, if the first speed does not reach the second speed, continuously outputting prompt information to the user; the second speed is indirectly followed as the user moves before the user reaches the opposite road surface.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. Fig. 1 is a flowchart of a walking prompting method based on a specific moving speed provided by the present invention;
FIG. 2 is a flow chart of a second speed maximum determination method provided by the present invention;
FIG. 3 is a flow chart of a method for slowing down a non-countdown timer according to the present invention;
FIG. 4 is a flowchart of an alerting method for a user according to the present invention;
FIG. 5 is a flow chart of a deceleration method for a moving obstacle according to the present invention;
FIG. 6 is a flow chart of a warning method for moving obstacles according to the present invention;
FIG. 7 is a flowchart of a method for continuously outputting prompt information according to the present invention;
FIG. 8 is a flowchart of an interval prompt information output method provided by the present invention
Fig. 9 is a block diagram of a walking prompt system embodied based on moving speed according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
As shown in fig. 1, the present embodiment provides a walking prompting method based on a specific moving speed, which includes the following steps:
101: acquiring an image in front of the moving direction of a user, and storing the image as a first image;
102: judging whether a traffic signal lamp exists in the first image or not;
103: if so, extracting color information and countdown information of the traffic signal lamp, wherein the color information comprises a red light state, a green light state and a yellow light state;
104: judging whether the traffic signal lamp is in a green state or not according to the color information;
105: if so, acquiring the current walking speed of the user, and storing the walking speed as a first speed;
106: calculating the distance between the user and the traffic signal lamp according to the first image, and storing the distance as a first distance;
107: calculating the time of the user reaching the traffic signal lamp according to the first distance and the first speed, and storing the time as first time;
108: judging whether the first time is greater than the time included in the countdown information;
109: if so, calculating a second speed according to the countdown information and the first distance, wherein the second speed is the minimum speed for the user to reach a traffic signal lamp when the countdown is finished;
110: extracting a prompt level corresponding to the second speed from the database;
111: and outputting the second speed to the user according to the prompt level.
As shown in fig. 2, calculating the second velocity from the countdown information and the first distance further includes:
the system is internally provided with a preset speed, and the preset speed is the maximum speed acceptable by a user;
judging whether the second speed is greater than a preset speed or not;
and if so, prompting.
As shown in fig. 3, extracting the color information and the countdown information of the traffic signal further includes:
judging whether the traffic signal lamp has countdown information or not;
if yes, extracting countdown information;
if not, judging whether the traffic signal lamp is in a green lamp or yellow lamp state according to the color information;
and if so, outputting the deceleration information to the user.
Specifically, in step 101, the first camera 401 acquires an image ahead of the user in the moving direction, and the image is temporarily stored as a first image, which is updated as the user moves. In step 102, the first camera 401 can acquire a first image in a certain range in front of the user moving direction, determine whether a traffic signal lamp exists in the first image, if the user is far away from the traffic signal lamp and the walking speed is slow, there is no need to prompt, the system has a preset range, the preset range is smaller than or equal to the shooting range of the first camera 401, in order to match the walking speed of the user and the counting-down duration of the traffic signal lamp better, the invention reduces the determination range to the preset range, that is, determine whether a traffic signal lamp exists in the preset range. In step 103, if a traffic signal lamp appears within the preset range, it is extracted that the traffic signal lamp includes color information and countdown information, the color information includes three states, namely a red light state, a green light state and a yellow light state, and the countdown information is the remaining duration corresponding to the light color state.
In order to reduce the time for the user to wait for the red light, the invention helps the user to pass through the green light as soon as possible, and in step 104, whether the traffic signal lamp is in the green light state is judged according to the color information. In step 105, if the traffic light within the preset range is in the green state, the current walking speed is obtained and temporarily stored as the first speed, the first speed is updated along with the movement of the user, and the first speed is an average speed, and may be specifically set to an average speed within 1s or 2 s. In step 106, the distance between the user and the traffic light is calculated according to the first image, and the distance is temporarily stored as a first distance, wherein the first distance is updated along with the movement of the user, and the first distance is the shortest distance between the current position of the user and the opposite surface of the fleet of roads, namely the shortest distance through which the user passes through a green light. In step 107, the first distance is divided by the first speed to obtain a time required for the user to reach the road-opposite surface in the current running state, and the calculated time is temporarily stored as a first time, which is updated as the user moves. In step 108, the time included in the current countdown information is extracted, and whether the first time at the current time is greater than the time included in the current countdown information is determined, meaning that it is determined whether the user can arrive at the road opposite surface before the countdown is finished in the current motion state. In step 109, if the first time at the same time is greater than the time included in the countdown information, it indicates that the user cannot reach the road opposite surface before the countdown of the green light in the current motion state. In step 110, the system is provided with a table of correspondence between the moving speed and the presentation level, which is inversely proportional to the presentation level, i.e., the smaller the moving speed, the higher the presentation level, and a table of correspondence between the presentation level and the vibration frequency, which is proportional to the vibration frequency, i.e., the higher the presentation level, the higher the vibration frequency, and in the vibration output mode, the smaller the second speed, the higher the vibration frequency of the vibration module 405. In step 111, the intelligent wearable device 404 worn by the user provides vibration feedback to the user, the user senses the magnitude of the second speed through the vibration frequency of the vibration module 405, and the audio module 406 can also output information of the second speed and the prompt level.
The user may set a preset speed in advance, where the preset speed is the maximum speed that the user can accept, and in step 109, if the second speed is greater than the preset speed, no prompt message is output to the user.
When the traffic light which does not comprise the countdown timer is used for a part of road sections, the accurate second speed cannot be provided, and if the traffic light is in a red light state, no prompt is given; if the traffic signal lamp is in a green light or yellow light state, in order to prevent the traffic signal lamp from suddenly switching colors, the deceleration information is output to the user through the vibration module 405 or the audio output module.
Example two
As shown in fig. 4, images on the left and right sides of the user's moving direction are acquired and stored as a second image;
judging whether a moving obstacle exists in the second image;
if yes, extracting a moving obstacle;
acquiring position information and moving speed of a moving obstacle;
acquiring position information and walking speed of a user;
judging whether the user meets the moving barrier or not;
if yes, outputting warning information to the user.
As shown in fig. 5, after outputting the warning information to the user, the method further includes:
calculating the distance between the moving obstacle and the user, and storing the distance as a second distance;
judging whether the second distance has a trend of decreasing;
if so, judging whether the second distance is smaller than or equal to a preset distance;
and if so, outputting the deceleration information to the user.
As shown in fig. 6, after outputting the deceleration information to the user, the method further includes:
acquiring a first speed of current walking of a user;
judging whether the first speed has a decreasing trend;
if not, the warning information is output to the outside.
Specifically, in the process that the user accelerates the walking speed, the attention to the surrounding environment is certainly reduced, the user is assisted to know the surrounding environment through the second camera device and the third camera device, the second camera device and the third camera device respectively shoot images on two sides of the moving direction of the user, the images are gathered into the second image to be temporarily stored, the second image is updated along with the movement of the user, and the user is helped to avoid moving obstacles according to the second image. Firstly, judging whether a moving obstacle exists in the second image, if so, extracting the moving obstacle, respectively acquiring the position information and the moving speed of the moving obstacle and the position information and the walking speed of the user at the same moment, drawing the motion curves of the moving obstacle and the moving speed, judging whether the moving obstacle and the moving speed meet each other before the countdown is finished, if so, outputting warning information to the user through the vibration module 405 or the voice module, and preventing the user from colliding with the moving obstacle. In addition, the mobile obstacle is dynamically monitored, the distance between the mobile obstacle and the user is calculated in real time, the distance is used as a second distance to be temporarily stored, the second distance is updated along with the movement of the user, a preset distance is further built in the method, the preset distance is the minimum safe distance between the mobile obstacle and the user, in the embodiment, the preset distance is set to be 2m, when the second distance is smaller than or equal to the preset distance, deceleration information is output to the user through the vibration module 405 or the audio module 406, and the deceleration information has corresponding vibration frequency.
Furthermore, besides outputting deceleration information to the user in a single way, warning information is output to the moving obstacle, when the deceleration information is output to the user, the process lasts for 2-3s to reserve sufficient reaction time for the user, the first speed of the user walking currently is obtained, and if the user does not decelerate, the warning information is output to the outside through the audio module 406.
EXAMPLE III
As shown in fig. 7, after outputting the second speed to the user according to the prompt level, the method further includes:
acquiring a first speed of current walking of a user;
judging whether the first speed is greater than or equal to the second speed;
and if not, continuously outputting the speed to the user until the acquired first speed is greater than or equal to the second speed.
After the second speed is output to the user according to the prompt level, the method further comprises the following steps:
the system is internally provided with a preset time length, and the steps 105 to 111 are repeated after the preset time length passes.
Specifically, after the second speed is output to the user through the vibration module 405 or the audio module 406, the user can feel the prompt information of the present invention, but the walking speed still cannot be consistent with the second speed, therefore, the present invention further provides a subsequent auxiliary function to help the user accurately and quickly reach the second speed, the output time of the vibration module 405 and the audio module 406 is limited, the output time is fixed at 2-3s, after the output of the vibration module 405 or the audio module 406 is finished, the first speed of the current walking of the user is obtained, the first speed at this time is an adjustment made after the user senses the prompt information, whether the first speed is greater than or equal to the second speed is judged, if yes, the user can reach the road opposite surface before the countdown of the green light is finished in the current motion state, if no, the first speed of the user at the current time does not reach the standard of the prompt information, and driving the vibration module 405 or the audio module 406 to continuously output, acquiring a first walking speed of the user in real time, and driving the vibration module 405 or the audio module 406 to stop outputting when the acquired first walking speed is greater than or equal to a second walking speed.
As shown in fig. 8, in order to ensure that the output prompt message has good timeliness, the prompt message is updated synchronously with the movement of the user, a preset time duration is set in advance, in this embodiment, the preset time duration is set to 5s, after the vibration module 405 or the audio module 406 finishes outputting the prompt message, timing is started from zero, when the timed time duration reaches 5s, steps 105 to 108 are repeated first, and if the first time is greater than the time included in the countdown message, steps 109 to 111 are continuously repeated; and if the first time is less than or equal to the second time, stopping repeating, starting timing from zero, and when the timing duration reaches 5s, repeating the steps 105 to 108, and so on.
Example four
As shown in fig. 9, a walking prompt system embodied based on moving speed includes a first camera 401401, a second camera 402, a third camera 403, a smart wearable device 404, a vibration module 405, and an audio module 406, the first camera 401 is configured to acquire an image in front of the moving direction of a user, the second camera 402 is configured to acquire an image in the left side of the moving direction of the user, the third camera 403 is configured to acquire an image in the right side of the moving direction of the user, the vibration module 405 and the audio module 406 are built in the smart wearable device 404, the vibration module 405 is configured to output a second speed to the user in a vibration form according to a prompt level, and outputting the warning information and the deceleration information to the user, the audio module 406 is further configured to output the second speed to the user in a form of voice according to the prompt level, and output the warning information and the deceleration information to the user.
Wherein, intelligent wearing equipment 404 includes intelligent neck ring, intelligent bracelet, intelligent wrist-watch and intelligent waistband etc. first camera 401, second camera 402 and third camera 403 can be independent with intelligent wearing equipment 404 physics.
It should be understood that, in the fourth embodiment, the specific implementation process of each module described above may correspond to the description of the above method embodiments (the first to the third embodiments), and is not described in detail here.
The system provided in the fourth embodiment is only illustrated by dividing the functional modules, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the system is divided into different functional modules to complete all or part of the functions described above.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A walking prompting method based on moving speed concretization is characterized in that: the method comprises the following steps:
101: acquiring an image in front of a user moving direction, and storing the image as a first image;
102: judging whether a traffic signal lamp exists in the first image or not;
103: if so, extracting color information and countdown information of the traffic signal lamp, wherein the color information comprises a red light state, a green light state and a yellow light state; wherein, extracting the color information and the countdown information of the traffic signal further comprises: judging whether the traffic signal lamp has countdown information or not;
if yes, extracting the countdown information;
if not, judging whether the traffic signal lamp is in a green lamp or yellow lamp state according to the color information;
if yes, outputting deceleration information to the user;
104: judging whether the traffic signal lamp is in a green state or not according to the color information;
105: if so, acquiring the current walking speed of the user, and storing the walking speed as a first speed, wherein the first speed is updated along with the movement of the user;
106: calculating the distance between the user and the traffic signal lamp according to the first image, and storing the distance as a first distance, wherein the first distance is updated along with the movement of the user;
107: calculating the time of the user reaching the traffic signal lamp according to the first distance and the first speed, and storing the time as first time, wherein the first time is updated along with the movement of the user;
108: judging whether the first time is greater than the time included in the countdown information;
109: if so, calculating a second speed according to the countdown information and the first distance, wherein the second speed is the minimum speed for the user to reach the traffic signal lamp when the countdown is finished, and the second speed is updated along with the movement of the user;
the system is internally provided with a preset speed, and the preset speed is the maximum speed accepted by a user;
judging whether the second speed is greater than the preset speed or not;
if yes, prompting;
110: extracting a prompt level corresponding to the second speed from a database;
111: outputting the second speed to a user according to the prompt level;
acquiring a first speed of current walking of a user;
judging whether the first speed is greater than or equal to the second speed;
if not, continuously outputting the speed to the user until the acquired first speed is greater than or equal to the second speed;
112: acquiring images on the left side and the right side of the moving direction of a user, and storing the images as second images;
judging whether a moving obstacle exists in the second image;
if yes, extracting the moving obstacle;
acquiring the position information and the moving speed of the moving obstacle;
acquiring position information and walking speed of a user;
judging whether the user meets the moving barrier or not;
if yes, outputting warning information to the user.
2. The walking prompt method based on moving speed specialization according to claim 1, characterized in that: after the warning information is output to the user, the method further comprises the following steps:
calculating the distance between the moving obstacle and the user, and storing the distance as a second distance;
judging whether the second distance has a trend of decreasing;
if so, judging whether the second distance is smaller than or equal to a preset distance;
and if so, outputting the deceleration information to the user.
3. The walking prompt method based on moving speed specialization according to claim 2, characterized in that: after the deceleration information is output to the user, the method further comprises the following steps:
acquiring a first speed of current walking of a user;
judging whether the first speed has a trend of decreasing;
if not, the warning information is output to the outside.
4. The walking prompt method based on moving speed specialization according to claim 1, characterized in that: after outputting the second speed to the user according to the prompt level, the method further comprises:
the system is internally provided with a preset time length, and the steps 105 to 111 are repeated after the preset time length passes.
5. Walking prompt system based on moving speed specialization implementing the method according to any one of claims 1 to 4, characterized in that: including first camera, second camera, third camera, intelligent wearing equipment and vibration module, first camera is configured to acquire the image in user moving direction the place ahead, the second camera is configured to acquire the left image of user moving direction, the third camera is configured to acquire the image on user moving direction right side, place in the vibration module intelligent wearing equipment, the vibration module is configured to export the second speed to the user with the vibration form according to suggestion level to and export warning information and speed reduction information to the user.
6. The walking prompt system embodied based on moving speed according to claim 5, wherein: the intelligent wearable device is characterized by further comprising an audio module arranged in the intelligent wearable device, wherein the audio module is further configured to output the second speed to a user in a voice mode according to a prompt level, and output warning information and deceleration information to the user.
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