LOCATING METHOD, DRIVE TEST TERMINAL AND HAND-HELD TERMINAL

• US 20150358784A1
• Filed: 01/03/2014
• Published: 12/10/2015
• Est. Priority Date: 01/09/2013
• Status: Active Grant

• Current Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.), Shanghai Datang Mobile Communication Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Original Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.), Shanghai Datang Mobile Communication Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Inventors: MA, Jun, LIAO, Jun
• Granted Patent: US 9,554,253 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 21/206 specially adapted for indoor navigation
• CPC Class Codes: G01C 25/005 initial alignment, calibration or starting-up of inertial devices
• CPC Class Codes: H04W 4/025 using location based information parameters
• CPC Class Codes: H04W 4/026 using orientation information, e.g. compass
• CPC Class Codes: H04W 4/33 for indoor environments, e.g. buildings

Abstract

The present invention provides a locating method, a drive test terminal and a hand-held terminal. Herein, the locating method comprises: a first terminal receiving an included angle value between a current advancing direction of a user and a due north direction, which is sent from a second terminal, wherein the first terminal is provided with a gyroscope, the second terminal is used to calculate the included angle value of the included angle between the current advancing direction and the due north direction according to the current advancing direction input by the user and a due north direction indication diagram, and send the included angle value to the first terminal; and the first terminal using the included angle value to correct an output angle of the gyroscope, so as to locate the first terminal. By the present invention, the directional angle may be accurately determined without using a magnetometer.

Claims

1. A locating method, comprising:

a first terminal receiving an included angle value between a current advancing direction of a user and a due north direction, which is sent from a second terminal, wherein the first terminal is provided with a gyroscope, the second terminal is used to calculate the included angle value of the included angle between the current advancing direction and the due north direction according to the current advancing direction input by the user and a due north direction indication diagram, and send the included angle value to the first terminal; and

the first terminal using the included angle value to correct an output angle of the gyroscope, so as to locate the first terminal.

2. The method according to claim 1, wherein the method further comprises:

the first terminal setting a current angle of the gyroscope to 0 degree when receiving the included angle value.

3. The method according to claim 2, wherein the step of the first terminal using the included angle value to correct an output angle of the gyroscope, comprises:

when outputting angle, the first terminal using the sum of a current to-be-output angle of the gyroscope and the included angle value as a corrected output angle.

4. A locating method, comprising:

a second terminal receiving a current advancing direction input by a user, and calculating an included angle value between the current advancing direction and a due north direction according to a due north direction indication diagram;

the second terminal receiving an output angle of a gyroscope, which is sent from a first terminal; and

the second terminal using the included angle value to correct the output angle, so as to locate the first terminal.

5. The method according to claim 4, wherein,

after the step of the second terminal receiving the current advancing direction input by the user, and calculating the included angle value between the current advancing direction and the due north direction according to the due north direction indication diagram, the method further comprises:

the second terminal acquiring a current angle of the gyroscope of the first terminal, and recording the acquired angle as a correction angle; and

the step of the second terminal using the included angle value to correct the output angle, comprises;

the second terminal using the included angle value and the correction angle to correct the output angle.

6. The method according to claim 5, wherein the step of the second terminal using the included angle value and the correction angle to correct the output angle, comprises:

the second terminal using a difference obtained by subtracting the correction angle from the sum of the output angle and the included angle value as a corrected angle.

7. A drive test terminal, comprising:

a receiving module, configured to receive an included angle value between a current advancing direction of a user and a due north direction, which is sent from a hand-held terminal, wherein the drive test terminal is provided with a gyroscope, and the hand-held terminal is used to calculate the included angle value of the included angle between the current advancing direction and the due north direction according to the current advancing direction input by the user and a due north direction indication diagram, and send the included angle value to the drive test terminal; and

a first correction location module, configured to use the included angle value to correct an output angle of the gyroscope, so as to locate the drive test terminal.

8. The drive test terminal according to claim 7, wherein the receiving module is further configured to set a current angle of the gyroscope to 0 degree when receiving the included angle value;

the first correction location module is configured to, when outputting angle, use the sum of a current to-be-output angle of the gyroscope and the included angle value as a corrected output angle, to locate the drive test terminal.

9. A hand-held terminal, comprising:

a calculation module, configured to receive a current advancing direction input by a user, and calculate an included angle value between the current advancing direction and a due north direction according to a due north direction indication diagram;

a receiving module, configured to receive an output angle of a gyroscope, which is sent from a drive test terminal; and

a second correction location module, configured to use the included angle value to correct the output angle, so as to locate the drive test terminal.

10. The hand-held terminal according to claim 9, wherein the hand-held terminal further comprises:

a recording module, configured to, after the calculation module receives the current advancing direction input by the user and calculates the included angle value between the current advancing direction and the due north direction according to the due north direction indication diagram, acquire a current angle of the gyroscope of the drive test terminal, and record the acquired angle as a correction angle; and

the second correction location module is configured to use a difference obtained by subtracting the correction angle from the sum of the output angle and the included angle value as a corrected angle, and use the corrected angle to locate the drive test terminal.