CN111536974A - Outdoor no-signal safety route planning guidance method and system - Google Patents

Abstract

The invention belongs to the technical field of outdoor navigation, and in particular relates to a method and system for planning and guiding an outdoor safe route without signals, comprising the following steps: S1. The user terminal determines whether the signal strength of the exploration area shows a decreasing trend and the signal strength is less than or equal to -90dBm; , then execute step S2; S2, the user terminal determines whether to download the three-dimensional topographic map and the safety path map of the exploration area; if so, execute step S4; if not, the user terminal uploads the collected data information to the server; S3, The user terminal downloads the three-dimensional topographic map and the safety path map of the exploration area corresponding to the data information from the server; S4, the user terminal plans the route according to the three-dimensional topographic map and the safety path map, and inertial guides the route to a feasible route; The safety path map guides the user to the no-signal area or inertial guidance to a feasible route, ensuring the safety of the user when exploring outdoors in the no-signal area to the greatest extent.

Description

A kind of outdoor signalless safe route planning and guidance method and system

technical field

The invention belongs to the technical field of outdoor navigation, and in particular relates to a method and a system for planning and guiding an outdoor safe route without signals.

Background technique

With the development of economy and informatization, outdoor off-roading and exploration have become a craze, and people are increasingly dependent on navigation and maps when they travel. However, navigation and maps have certain limitations in some aspects, such as Navigation is very dependent on signals. When the navigation loses the signal, the map cannot be loaded for precise guidance. Although the current map is perfected very fast, many remote paths, mountain paths, and no-signal areas are still not included. It is very easy to get lost in the signal area and remote paths in the mountains. At present, most of the existing rescue devices are used to send out a distress signal to wait for rescue. The user transmits the distress signal through a terminal such as a mobile phone, and the search and rescue personnel conduct search and rescue by locating the position of the lost person. Such a device has a great defect, that is, in areas with weak signals, the transmission of distress signals is very difficult, and the distress signals cannot be transmitted in no-signal areas. The transmission distance using radio waves is short, and the rescue efficiency is also very low. Therefore, it is necessary to improve on this basis.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an outdoor no-signal safe route planning and guidance method and system in order to solve the defects existing in the current rescue.

In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

An outdoor no-signal safe route planning and guidance method, comprising the following steps:

S1, the user terminal judges whether the signal strength of the exploration area presents a decreasing trend and the signal strength is less than or equal to -90dBm; if so, execute step S2;

S2, the user terminal determines whether to download the three-dimensional topographic map and the safety path map of the exploration area; if so, execute step S4; if not, the user terminal uploads the collected data information to the server;

S3, the user terminal downloads the three-dimensional topographic map and the safety path map of the exploration area corresponding to the data information from the server;

S4, the user terminal plans the route according to the three-dimensional topographic map and the safety route map, and inertial guides the route to a feasible route.

As a preferred solution, before the step S1, the method further includes: before entering the exploration area, the user terminal obtains a three-dimensional topographic map and a safe path map of the no-signal area from the server.

As a preferred solution, after step S4, the method further includes: if the actual running route of the user terminal is different from the feasible route and goes out of the no-signal area, the user terminal stores the actual running route and uploads it to the server.

As a preferred solution, the data information in the step S2 includes one or more of the user's location, altitude, motion posture, travel speed, azimuth angle, and angular acceleration.

As a preferred solution, the step S3 further includes: if the server does not have a safe path map, the user terminal downloads the three-dimensional topographic map and prompts information that no one is exploring.

As a preferred solution, the step S2 further includes: when the user terminal downloads the three-dimensional topographic map and the safety path map, if the user continues to move and the signal strength is weakened, a voice prompts the user terminal to move after the loading is completed.

As a preferred solution, the signal strength trend is judged by using a GSM-R signal strength dynamic algorithm.

As a preferred solution, the feasible route of the inertial guidance is obtained through an optimal path algorithm.

An outdoor non-signal safe route planning and guidance system includes a user terminal and a server, and the user terminal includes:

The single-chip microcomputer, communicates with the server, and interacts with the server;

An altitude sensor, connected with the microcontroller, is used to measure the altitude change;

The air pressure sensor, connected with the microcontroller, is used to measure the air pressure change;

GPS positioning module, connected with single chip microcomputer, used to obtain position information;

4G module, which is connected to the single-chip microcomputer to obtain the strength of the 4G signal;

The inertial navigation module is connected to the single-chip microcomputer, and is used to receive the guidance command of the single-chip microcomputer to realize inertial guidance;

The LED touch screen is connected with the single-chip microcomputer, and the single-chip microcomputer obtains the three-dimensional topographic map, the safe route map and the feasible route map of the server to display through the LED touch screen;

The electronic compass is connected with the single-chip microcomputer and is used to measure the user's movement information.

As a preferred solution, the method further includes: a voice module for prompting unexplored information and information that the user terminal moves after the loading is completed.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention can conduct off-line guidance in a no-signal area through the guidance system, and use the methods of unknown acquisition, path recording, and feasible path acquisition to guide the user to a non-signal area or guide to a feasible path, and self-guide and self-rescue in real time. It ensures the safety of users when exploring outdoors in the no-signal area, and the automatic inertial navigation mode of the guidance system reduces the possibility of users getting lost and making incorrect judgments, leading to the possibility of being in danger. When the altitude is higher and the air pressure is lower, an intelligent voice reminder will be given to the user, reducing the possibility of hypoxia and physical exhaustion caused by the user's de-stress.

Description of drawings

Fig. 1 is the flow chart of Embodiment 1 of the present invention;

2 is a schematic diagram of a three-dimensional topographic map and a safe path according to Embodiment 1 of the present invention;

3 is a fitting diagram of a feasible route map and a lost guidance route according to Embodiment 1 of the present invention;

FIG. 4 is a schematic diagram of the connection of each module of the guidance system of the real-time example 1 of the present invention.

Detailed ways

The technical solutions of the present invention will be further described and illustrated below through specific embodiments.

Example 1:

As shown in FIG. 1 to FIG. 3 , this embodiment provides an outdoor no-signal safe route planning and guidance method, including the following steps:

S1, the user terminal judges whether the signal strength of the exploration area presents a decreasing trend and the signal strength is less than or equal to -90dBm; if so, execute step S2;

S2, the user terminal determines whether to download the three-dimensional topographic map and the safety path map of the exploration area; if so, execute step S4; if not, the user terminal uploads the collected data information to the server;

S3, the user terminal downloads the three-dimensional topographic map and the safety path map of the exploration area corresponding to the data information from the server;

S4, the user terminal plans the route according to the three-dimensional topographic map and the safety route map, and inertial guides the route to a feasible route.

Through the 4G module, the 4G signal in the user's exploration area is continuously captured, and the captured signal strength information is transmitted to the single-chip microcomputer. The single-chip microcomputer uses the GSM-R signal strength dynamic algorithm to determine whether the signal is less than or equal to -90dBm and whether it continues to decrease. If not, then The microcontroller enters the low power consumption mode and continuously judges the signal strength.

Before step S1, the method further includes: before entering the exploration area, the user terminal obtains a three-dimensional topographic map and a safe path map of the signal-free area from the server. Before preparing to explore, users can use the system to obtain the signal coverage and mountain conditions of the unsignaled area of the exploration area, and obtain the 3D topographic map and safety path map of the exploration mountain in advance, so as to minimize the danger of exploration.

After step S4, it also includes: if the actual running route of the user terminal is different from the feasible route and goes out of the no-man’s land, the user terminal stores the actual running route and uploads it to the server to form a new safe route map, and the storage method can be realized. Power-off save. If the user walks out of the no-man’s land without relying on the system, and completes the exploration of a road section with a signal at the time of entry and then to a signal at the exit, the system will upload the user’s actual running route and 3D topographic map to the server at the exit, which will be regarded as no signal. A new safe path map for the area for other exploration users. Users can also record some mountain conditions through the system, such as a certain position of the mountain fracture, landslides and other data information uploaded to the server.

The data information in step S2 includes one or more of the user's location, altitude, motion posture, travel speed, azimuth angle, and angular acceleration. The user terminal determines whether to download the three-dimensional topographic map and the safety path map of the unmanned area. If not, the single-chip microcomputer exits the low-power consumption mode, quickly collects the user terminal data information, and exchanges data with the server through the single-chip microcomputer, and converts various data of the user. Upload to the server.

Step S2 also includes: when the user terminal downloads the three-dimensional topographic map and the safety path map, if the user continues to move and the signal strength is weakened, a voice prompts the user terminal to move after the loading is completed. GPS positioning obtains location information, electronic compass obtains motion data, transmits the data to the server, and sends a request to obtain a three-dimensional map of the travel area and a safe route. During the route map, if the user continues to move and the signal strength is weakened, the voice prompts the user to move after the loading is completed.

Step S3 further includes: if the server does not have a safe path map, the user terminal downloads the three-dimensional topographic map and prompts information that no one is exploring. After receiving the data, the server searches for the no-signal area in the position and movement direction of the user terminal, and releases the three-dimensional terrain and safe path map of the no-signal area that the user may reach to the user. Security path map) The server only downloads the 3D topographic map and unexplored information; if the device detects that the user continues to move and the signal shows a decreasing trend during the download of the 3D topographic map, it will alert the user to wait for the loading to complete before moving. .

The system judges the user's movement speed. If the speed enters the hiking range, the system will obtain and calculate the user's exercise distance, time, climbing height and other data information, obtain the user's exercise energy consumption data, and calculate the user's exercise amount and altitude change, air pressure. Changes are made to judge whether the user will collapse if they continue to climb, so as to provide intelligent voice prompts to the user, reduce the user's physical exhaustion, and prevent the possibility of being trapped due to deoxygenation.

Through the combination of user-selected control and equipment automatic control, the user can control the device to obtain various information of the exploration site in advance. If the user forgets, the system will use the GSM-R signal strength dynamic algorithm to determine whether the user will erroneously enter some unintentional information while traveling. Signal areas, and obtain the fitting map of the three-dimensional terrain and safe paths in these non-signal areas to prepare for exploration, which greatly reduces the risk of some exploration enthusiasts getting lost and trapped due to insufficient preparation. The system can provide inertial guidance when the user is lost in the guidance section, and can guide the user to return to the original path according to the three-dimensional topographic map when the user explores or does not download the safe path map. Or guide the user to a safe path according to the downloaded safety path map, and take the user to leave the place. Inertial guidance avoids the explorer panicking and making some irrational behaviors when getting lost, which will increase the danger and reduce the probability of being rescued. It ensures the safety of exploration users.

As shown in FIG. 4 , a guidance system corresponding to an outdoor signalless safe route planning and guidance method provided in this embodiment includes a user terminal and a server, and the user terminal includes:

The single-chip microcomputer, communicates with the server, and interacts with the server; the single-chip microcomputer adopts MSP430, which is used to process user data, reduce the power consumption of the system to the greatest extent, and use it to plan routes, calculate signal strength, send guidance instructions, etc.;

The altitude sensor, connected with the single chip microcomputer, is used to measure the altitude change; it is used as the data for the user's travel route and lost guidance path planning;

An air pressure sensor, connected to the microcontroller, is used to measure changes in air pressure to reduce the possibility of hypoxia caused by low air pressure;

GPS positioning module, connected with single chip microcomputer, is used to obtain position information, which is an important basis for user energy consumption and route planning;

The 4G module is connected to the single-chip microcomputer to obtain the strength of the 4G signal, as a medium for the information interaction between the single-chip computer and the server;

The inertial navigation module is connected to the single-chip microcomputer, and is used to receive the guidance command of the single-chip microcomputer to realize inertial guidance;

The LED touch screen is connected with the single-chip microcomputer, and the single-chip microcomputer obtains the three-dimensional topographic map, the safe route map and the feasible route map of the server to display through the LED touch screen;

The electronic compass, connected with the single chip microcomputer, is used to measure the user's movement information, including one or more of the user's position, altitude, movement attitude, travel speed, azimuth angle, and angular acceleration.

It also includes: a voice module for prompting unexplored information and information that the user terminal moves after loading, including a voice recognition unit and a voice broadcast unit, the voice recognition unit is used to recognize user instructions, and the voice broadcast unit is used to remind users to download Maps, information about the movement of the user terminal after loading is completed, and severe physical exhaustion alerts.

On the whole, the guidance system uses the GSM-R signal strength dynamic algorithm to intelligently judge whether the surrounding signal has a trend of disappearing. If so, it will request the server to obtain the topographic map of the surrounding non-signal area and the fitting map of the safe route through the 4G module. The positioning module and electronic compass obtain the user's three-dimensional travel data for fitting and display the travel route on the LED touch screen. When the user is lost, the automatic guidance system can be turned on through the voice module, and the single-chip microcomputer calculates the user's current position. The most reliable route from the safe path And formulate a path curve and use the inertial navigation module to guide to the exit with a signal or guide back to the user's starting point. To the greatest extent, it reduces the occurrence of situations such as increased danger and reduced probability of being rescued due to irrational behaviors caused by anxiety and panic when users get lost or trapped. Voice prompts are given when the consumption is high, reducing the possibility of users being trapped due to physical exhaustion and deoxygenation. Therefore, the system minimizes the danger of the explorer when exploring outdoors.

The above are only the preferred embodiments of the present invention and the applied technical principles. Although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and without departing from the concept of the present invention, Still other equivalent embodiments may be included, and the scope of the invention is determined by the scope of the appended claims.

Claims (10)

1. An outdoor no-signal safety route planning guidance method is characterized by comprising the following steps:

s1, the user terminal judges whether the signal intensity of the exploration area is in a descending trend and the signal intensity is less than or equal to-90 dBm; if yes, go to step S2;

s2, the user terminal judges whether to download the three-dimensional topographic map and the safety path map of the exploration area; if yes, go to step S4; if not, the user terminal uploads the acquired data information to the server;

s3, the user terminal downloads the three-dimensional topographic map and the safety path map of the search area corresponding to the data information from the server and executes the step S4;

and S4, planning the route and carrying out inertial guidance to the feasible route by the user terminal according to the three-dimensional topographic map and the safety path map.

2. The outdoor signalless safe route planning guidance method according to claim 1, wherein the step S1 is preceded by: before entering the exploration area, the user terminal acquires a three-dimensional topographic map and a safety path map of the signal-free area from the server.

3. The outdoor signalless safe route planning and guidance method according to claim 1, wherein the step S4 is further followed by: and if the actual operation route of the user terminal is different from the feasible route and the user terminal leaves the non-signal area, the user terminal stores the actual operation route and uploads the actual operation route to the server.

4. The guidance method of claim 1, wherein the data information in step S2 includes one or more of the position, altitude, motion attitude, travel speed, azimuth angle, and angular acceleration of the user terminal.

5. The outdoor signalless safe route planning guidance method of claim 1, wherein the step S3 further comprises: and if the server has no safe path graph, the user terminal downloads the three-dimensional topographic map and prompts information which is not explored by people.

6. The outdoor signalless safe route planning and guidance method according to claim 1, wherein the step S2 further comprises: when the user terminal downloads the three-dimensional topographic map and the safety path map, if the user terminal continuously moves and the signal intensity is weakened, the user terminal is prompted by voice to move after the loading is finished.

7. The outdoor signal-free safety route planning guidance method according to claim 1, wherein the signal strength trend is judged by a GSM-R signal strength dynamic algorithm.

8. The outdoor signalless safe route planning guidance method according to claim 1, wherein the route of travel for inertial guidance is obtained by an optimal path algorithm.

9. An outdoor no-signal safety route planning guidance system is characterized by comprising a user terminal and a server, wherein the user terminal comprises:

the single chip microcomputer is in communication connection with the server and interacts with the server;

the altitude sensor is connected with the single chip microcomputer and used for measuring altitude change;

the air pressure sensor is connected with the single chip microcomputer and used for measuring air pressure change;

the GPS positioning module is connected with the singlechip and used for acquiring position information;

the 4G module is connected with the single chip microcomputer and used for acquiring the strength of the 4G signal;

the inertial navigation module is connected with the singlechip and used for receiving a guidance command of the singlechip so as to realize inertial guidance;

the single chip microcomputer acquires a three-dimensional topographic map, a safety path map and a feasible path map of the server so as to display the maps through the LED touch screen;

and the electronic compass is connected with the singlechip and used for measuring the motion information.

10. The outdoor signalless safe route planning guidance system of claim 9, further comprising:

and the voice module is connected with the singlechip and used for prompting the information explored by the nobody and the information moved after the user terminal finishes loading.

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