Navigation method and device

• US 10,161,756 B2
• Filed: 02/26/2016
• Issued: 12/25/2018
• Est. Priority Date: 03/30/2015
• Status: Active Grant

• Current Assignee: Xiaomi Inc. (Xiaomi Corp.)
• Original Assignee: Xiaomi Inc. (Xiaomi Corp.)
• Inventors: Tang, Mingyong, Liu, Huayijun, Chen, Tao
• Primary Examiner(s): Brushaber, Frederick M
• Application Number:
  US15/054,250
• Publication Number:
  US 20160290815A1
• Time in Patent Office: 1,033 Days
• CPC Class Codes: B60Q 9/00 Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 , e.g. haptic signalling
• CPC Class Codes: B60W 40/06 Road conditions
• CPC Class Codes: G01C 21/34 Route searching; Route guidance
• CPC Class Codes: G01C 21/3453 Special cost functions, i.e. other than distance or default speed limit of road segments
• CPC Class Codes: G01C 21/3461 Preferred or disfavoured areas, e.g. dangerous zones, toll or emission zones, intersections, manoeuvre types, segments such as motorways, toll roads, ferries
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G01G 19/08 for incorporation in vehicles

Abstract

A navigation method includes: obtaining status information of one or more tires of a vehicle; obtaining road condition information in real time; and performing a route navigation for the vehicle according to the status information, the road condition information, and a preset navigation strategy.

Claims

1. A navigation method for use in a device, comprising:

obtaining status information of one or more tires of a vehicle;

obtaining road condition information in real time; and

performing a route navigation for the vehicle according to the status information, the road condition information, and a preset navigation strategy,

wherein the status information of the one or more tires of the vehicle comprises shape change information and tire pressure information of the one or more tires of the vehicle,

the road condition information comprises weather information, maximum load limits on possible drive routes, and maximum height limits on the possible drive routes, and

the performing the route navigation for the vehicle includes;

determining, according to the weather information included in the obtained road condition information, whether there is a slippery road on a drive route planned for the vehicle;

in response to determining that there is a slippery road on the drive route planned for the vehicle, determining, according to the tire pressure information of the one or more tires of the vehicle, whether a current pressure of the one or more tires of the vehicle reaches a preset alert threshold; and

in response to determining that the current pressure of the one or more tires of the vehicle reaches the preset alert threshold, sending an alarm to a user and planning an alternative route.

2. The navigation method according to claim 1, wherein performing the route navigation for the vehicle according to the status information, the road condition information, and the preset navigation strategy comprises:

computing a current load of the vehicle according to the shape change information;

judging whether the current load of the vehicle exceeds the maximum load limit on a drive route planned for the vehicle; and

if the current load of the vehicle exceeds the maximum load limit on the planned drive route, sending an alarm to a user and planning an alternative route.

3. The navigation method according to claim 2, further comprising:

judging whether the current load of the vehicle exceeds a maximum load limit of the vehicle; and

if the current load of the vehicle exceeds the maximum load limit of the vehicle, determining that the vehicle is overloaded and sending an alarm to the user.

4. The navigation method according to claim 1, wherein performing the route navigation for the vehicle according to the status information, the road condition information, and the preset navigation strategy comprises:

computing a current height of the vehicle according to the shape change information;

judging whether the current height of the vehicle exceeds the maximum height limit on a drive route planned for the vehicle; and

if the current height of the vehicle exceeds the maximum height limit of the planned drive route, sending an alarm to a user and planning an alternative route.

5. The navigation method according to claim 1, wherein collecting the shape change information of the one or more tires comprises:

recording, by the one or more cameras, pictures of the one or more tires periodically in the memory device; and

reading the pictures from the memory device and comparing the pictures to obtain the shape change information.

6. The navigation method according to claim 1, wherein the shape change information includes height change information or volume change information.

7. A navigation device, comprising:

a processor; and

a memory configured to store instructions executable by the processor;

wherein the processor is configured to;

obtain status information of one or more tires of a vehicle;

obtain road condition information in real time; and

perform a route navigation for the vehicle according to the status information, the road condition information, and a preset navigation strategy,

wherein the status information of the one or more tires of the vehicle comprises shape change information and tire pressure information of the one or more tires of the vehicle,

the road condition information comprises weather information, maximum load limits on possible drive routes, and maximum height limits on drive routes, and

in performing the route navigation for the vehicle, the processor is further configured to;

determine, according to the weather information included in the obtained road condition information, whether there is a slippery road on a drive route planned for the vehicle;

in response to determining that there is a slippery road on the drive route planned for the vehicle, determine, according to the tire pressure information of the one or more tires of the vehicle, whether a current pressure of the one or more tires of the vehicle reaches a preset alert threshold; and

in response to determining that the current pressure of the one or more tires of the vehicle reaches the preset alert threshold, send an alarm to a user and plan an alternative route.

8. The navigation device according to claim 7, wherein the processor is configured to:

compute a current load of the vehicle according to the shape change information;

judge whether the current load of the vehicle exceeds the maximum load limit on a drive route planned for the vehicle; and

if the current load of the vehicle exceeds the maximum load limit on the planned drive route, send an alarm to a user and plan an alternative route.

9. The navigation device according to claim 8, wherein the processor is further configured to:

judge whether the current load of the vehicle exceeds a maximum load limit of the vehicle; and

if the current load of the vehicle exceeds the maximum load limit of the vehicle, determine that the vehicle is overloaded and send an alarm to the user.

10. The navigation device according to claim 7, wherein the processor is configured to:

compute a current height of the vehicle according to the shape change information;

judge whether the current height of the vehicle exceeds the maximum height limit on a drive route planned for the vehicle; and

if the current height of the vehicle exceeds the maximum height limit of the planned drive route, send an alarm to a user and plan an alternative route.

11. The navigation device according to claim 7, wherein the processor is configured to:

record pictures of the one or more tires periodically in the memory device; and

read the pictures from the memory device and compare the pictures to obtain the shape change information.

12. The navigation device according to claim 7, wherein the shape change information includes height change information or volume change information.

13. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a terminal, cause the terminal to perform a navigation method, the navigation method comprising:

obtaining status information of one or more tires of a vehicle;

obtaining road condition information in real time; and

performing a route navigation for the vehicle according to the status information, the road condition information, and a preset navigation strategy,

wherein the status information of the one or more tires of the vehicle comprises shape change information and tire pressure information of the one or more tires of the vehicle,

the road condition information comprises weather information, maximum load limit on possible drive routes, and maximum height limits on the possible drive routes, and

the performing the route navigation for the vehicle includes;

determining, according to the weather information included in the obtained road condition information, whether there is a slippery road on a drive route planned for the vehicle;

in response to determining that there is a slippery road on the drive route planned for the vehicle, determining, according to the tire pressure information of the one or more tires of the vehicle, whether a current pressure of the one or more tires of the vehicle reaches a preset alert threshold; and

in response to determining that the current pressure of the one or more tires of the vehicle reaches the preset alert threshold, sending an alarm to a user and planning an alternative route.

14. The storage medium according to claim 13, wherein performing the route navigation for the vehicle according to the status information, the road condition information, and the preset navigation strategy comprises:

computing a current load of the vehicle according to the shape change information;

judging whether the current load of the vehicle exceeds the maximum load limit on a drive route planned for the vehicle; and

if the current load of the vehicle exceeds the maximum load limit on the planned drive route, sending an alarm to a user and planning an alternative route.

15. The storage medium according to claim 14, wherein the navigation method further comprises:

judging whether the current load of the vehicle exceeds a maximum load limit of the vehicle; and

if the current load of the vehicle exceeds the maximum load limit of the vehicle, determining that the vehicle is overloaded and sending an alarm to the user.

16. The storage medium according to claim 13, wherein performing the route navigation for the vehicle according to the status information, the road condition information, and the preset navigation strategy comprises:

computing a current height of the vehicle according to the shape change information;

judging whether the current height of the vehicle exceeds the maximum height limit on a drive route planned for the vehicle; and

if the current height of the vehicle exceeds the maximum height limit of the planned drive route, sending an alarm to a user and planning an alternative route.

17. The storage medium according to claim 13, wherein collecting the shape change information of the one or more tires comprises:

recording, by the one or more cameras, pictures of the one or more tires periodically in the memory device; and

reading the pictures from the memory device and comparing the pictures to obtain the shape change information.

18. The storage medium according to claim 13, wherein the shape change information includes height change information or volume change information.