CN-122015884-A - Navigation data caching method, device, equipment and storage medium

CN122015884ACN 122015884 ACN122015884 ACN 122015884ACN-122015884-A

Abstract

The invention provides a navigation data caching method, a device, equipment and a storage medium, which belong to the technical field of intelligent navigation, and the method comprises the steps of acquiring navigation path data, combining map information and historical signal coverage data, and predicting whether a weak network or a non-network area exists in a current navigation path; when the current navigation path is predicted to have a weak network or no network area, the navigation data storage task is executed in advance by combining the running speed of the vehicle, the electric quantity of equipment and the data storage space, the network quality in the running process is monitored in real time, the local navigation data cached by executing the navigation data storage task is called when the current navigation path enters the weak network or no network area, and the online navigation data is used when the network state is restored to the normal network from the weak network or no network. By the technical scheme provided by the embodiment of the invention, navigation can be ensured not to be interrupted in weak network or no network environments such as tunnels, underground garages, mountain areas and the like.

Inventors

YAN XUEBING
ZHOU FEI
LI CAN
WU YULONG
ZHU GUISHENG

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260205

Claims (10)

1. A navigation data caching method, comprising: acquiring navigation path data, and predicting whether a weak network or a network-free area exists in the current navigation path by combining map information and historical signal coverage data; When a weak network or a network-free area exists in the current navigation path, a navigation data storage task is executed in advance by combining the running speed of the vehicle, the electric quantity of equipment and the data storage space; the method comprises the steps of monitoring network quality in the running process in real time, calling local navigation data cached by executing a navigation data storage task when entering a weak network or a no-network area, and using online navigation data when the network state is restored to a normal network from the weak network or the no-network.
2. The method according to claim 1, wherein the process of performing navigation data storage tasks, in particular, comprises: when the existence of a weak network or a network-free area in the current navigation path is predicted, respectively comparing the running speed of the vehicle, the electric quantity of equipment and the data storage space with a preset speed threshold value, an electric quantity threshold value and a preset storage threshold value; And (3) integrating the speed, the electric quantity and the storage comparison result, and determining the grade of the data storage task and the corresponding target storage data.
3. The method of claim 2, wherein the levels of navigation data storage tasks include a first level storage task, a second level storage task, and a third level storage task; The target storage data corresponding to the first-level storage task is a key turning point in the current navigation path; the target storage data corresponding to the second-level storage task is road information in the current navigation path; and the target storage data corresponding to the third-level storage task are POI data and road condition data in the current navigation path.
4. The method as recited in claim 2, further comprising: Recording trigger data when the navigation data storage task is triggered to be executed and use data of local navigation data cached by the navigation data storage task; The prediction accuracy of the weak network or the no-network area is statistically predicted, and the cache hit rate of the local navigation data when the weak network or the no-network area is entered; Based on the trigger data, the usage data, the prediction accuracy and the cache hit rate, a preset vehicle speed threshold, an electric quantity threshold and a storage threshold are adaptively adjusted.
5. The method according to claim 1, wherein the process of performing navigation data storage tasks, in particular, comprises: when the existence of a weak network or a network-free area in the current navigation path is predicted, respectively comparing the running speed of the vehicle, the electric quantity of equipment and the data storage space with a preset speed threshold value, an electric quantity threshold value and a preset storage threshold value; When the running speed of the vehicle is lower than the second speed threshold value, the navigation range of the cache navigation data is reduced; And when the electric quantity of the equipment is higher than the electric quantity threshold value and the data storage space is higher than the storage threshold value, caching the navigation data with a preset depth.
6. The method of claim 5, wherein the first speed threshold is higher than the second speed threshold; And caching navigation data in a preset navigation range when the running speed of the vehicle is between the first speed threshold value and the second speed threshold value.
7. The method of claim 1, further comprising performing a HUD or center screen prompt while performing the navigation data storage task.
8. A navigation data caching device, characterized in that the device is configured for implementing the method of any one of claims 1-7, the device comprising: the acquisition module is used for acquiring navigation path data, combining map information and historical signal coverage data, and predicting whether a weak network or a network-free area exists in the current navigation path; The prediction module is used for pre-executing a navigation data storage task by combining the running speed of the vehicle, the electric quantity of the equipment and the data storage space when the weak network or the no network area exists in the current navigation path; The monitoring module is used for monitoring the network quality in the running process in real time, calling the local navigation data cached by executing the navigation data storage task when entering the weak network or the no-network area, and using the online navigation data when the network state is recovered to the normal network from the weak network or the no-network.
9. An electronic device, the electronic device comprising: At least one processor, and a memory communicatively coupled to the at least one processor; the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the steps of the method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the steps of the method of any one of claims 1-7.

Description

Navigation data caching method, device, equipment and storage medium Technical Field The present invention relates to the field of intelligent navigation technologies, and in particular, to a navigation data caching method, device, equipment, and storage medium. Background Most of the existing vehicle navigation applications rely on real-time network transmission of map data, but the problem of network signal interruption often occurs in special environments such as tunnels, underground garages, mountain areas and the like, so that navigation interfaces are blocked or blank. And voice broadcasting delay is easy to occur, so that a driver misses steering information, and serious potential safety hazards exist. In order to cope with the impact of network signal disruption, existing car navigation applications cache data for the entire route in advance, but they waste a lot of storage and computing resources. Therefore, a scheme capable of predicting a special environment in advance and intelligently caching navigation data is needed to ensure navigation continuity. Disclosure of Invention The invention aims to solve at least one technical problem existing in the prior art and provides a navigation data caching method, a navigation data caching device, navigation data caching equipment and a storage medium. In a first aspect, an embodiment of the present invention provides a navigation data caching method, including: acquiring navigation path data, and predicting whether a weak network or a network-free area exists in the current navigation path by combining map information and historical signal coverage data; When a weak network or a network-free area exists in the current navigation path, a navigation data storage task is executed in advance by combining the running speed of the vehicle, the electric quantity of equipment and the data storage space; the method comprises the steps of monitoring network quality in the running process in real time, calling local navigation data cached by executing a navigation data storage task when entering a weak network or a no-network area, and using online navigation data when the network state is restored to a normal network from the weak network or the no-network. In some embodiments, the process of performing the navigation data storage task specifically includes: when the existence of a weak network or a network-free area in the current navigation path is predicted, respectively comparing the running speed of the vehicle, the electric quantity of equipment and the data storage space with a preset speed threshold value, an electric quantity threshold value and a preset storage threshold value; And (3) integrating the speed, the electric quantity and the storage comparison result, and determining the grade of the data storage task and the corresponding target storage data. In some embodiments, the navigation data storage task levels include a first level storage task, a second level storage task, and a third level storage task; The target storage data corresponding to the first-level storage task is a key turning point in the current navigation path; the target storage data corresponding to the second-level storage task is road information in the current navigation path; and the target storage data corresponding to the third-level storage task are POI data and road condition data in the current navigation path. In some embodiments, further comprising: Recording trigger data when the navigation data storage task is triggered to be executed and use data of local navigation data cached by the navigation data storage task; The prediction accuracy of the weak network or the no-network area is statistically predicted, and the cache hit rate of the local navigation data when the weak network or the no-network area is entered; Based on the trigger data, the usage data, the prediction accuracy and the cache hit rate, a preset vehicle speed threshold, an electric quantity threshold and a storage threshold are adaptively adjusted. In some embodiments, the process of performing the navigation data storage task specifically includes: when the existence of a weak network or a network-free area in the current navigation path is predicted, respectively comparing the running speed of the vehicle, the electric quantity of equipment and the data storage space with a preset speed threshold value, an electric quantity threshold value and a preset storage threshold value; When the running speed of the vehicle is lower than the second speed threshold value, the navigation range of the cache navigation data is reduced; And when the electric quantity of the equipment is higher than the electric quantity threshold value and the data storage space is higher than the storage threshold value, caching the navigation data with a preset depth. In some embodiments, the first speed threshold is higher than the second speed threshold; And caching navigation data in a preset navigation range when the runni