Composite navigation system

• US 9,297,659 B2
• Filed: 07/29/2014
• Issued: 03/29/2016
• Est. Priority Date: 07/29/2014
• Status: Active Grant

• Current Assignee: Chung Hua University
• Original Assignee: Chung Hua University
• Inventors: Lin, Jium Ming
• Primary Examiner(s): MARC-COLEMAN, MARTHE Y
• Application Number:
  US14/446,069
• Publication Number:
  US 20160033278A1
• Time in Patent Office: 609 Days
• Field of Search: 701/468, 701/472, 701/532, 701/470, 701/476, 701/479, 701/480, 701/500, 701/503, 701/505, 701/509, 342/357.52, 342/357.74, 342/357.42, 342/104, 342/118
• US Class Current: 1/1
• CPC Class Codes: G01C 21/1652 with ranging devices, e.g. LIDAR or RADAR

Abstract

A composite navigation system includes a first RFID apparatus, a GPS receiver, and a signal processing system. The first RFID apparatus includes an RFID chip and an antenna, a plurality of inclinometers, a plurality of linear accelerometers, and a plurality of angular accelerometers. The processing system includes a first RFID reader and a Kalman filter. The first RFID apparatus can communicate with the first RFID reader. The Kalman filter connects to the GPS receiver and the first RFID reader.

Claims

1. A composite navigation system comprising:

a first RFID apparatus disposed on a vehicle, the first RFID apparatus comprising a plurality of inclinometers, a plurality of linear accelerometers, and a plurality of angular accelerometers to detect dynamic information of the vehicle;

a GPS receiver; and

a signal processing system comprising;

a first RFID reader configured to communicate with the first RFID apparatus; and

a Kalman filter connecting to the GPS receiver and the first RFID reader,

wherein the first RFID apparatus is configured to submit detected dynamic information to the signal processing system by a standard RFID communication protocol.

2. The composite navigation system of claim 1, further comprising a processor connecting to the Kalman filter.

3. The composite navigation system of claim 2, further comprising an external extension database configured to store data from the first RFID apparatus and the GPS receiver.

4. The composite navigation system of claim 2, wherein the Kalman filter uses data from the GPS receiver to correct navigation data from the first RFID apparatus.

5. The composite navigation system of claim 2, wherein data from the first RFID apparatus comprises pitch angle data and roll angle data.

6. The composite navigation system of claim 2, configured to stop using signals from the GPS receiver when geometric dilution of precision of satellite configuration geometry is greater than 15.

7. The composite navigation system of claim 1, further comprising a second RFID apparatus including a flexible speaker.

8. The composite navigation system of claim 7, wherein the second RFID apparatus further comprises a light-emitting diode display device.

9. The composite navigation system of claim 1, further comprising a Doppler radar apparatus, wherein the composite navigation system is configured to determine a relative speed and a distance between cars according to a frequency of a Doppler radar signal from a rear vehicle and a delay time of a reflected Doppler radar signal.

10. The composite navigation system of claim 9, configured to determine a collision time when a collision occurs according to the relative speed and the distance.

11. The composite navigation system of claim 10, configured to compare the collision time with a safety time, and to generate a sound or voice through a flexible speaker and a light signal through a light-emitting diode display device so as to warn a driver.

12. The composite navigation system of claim 1, wherein the first RFID apparatus is configured to measure a pitch angle of a car.

13. The composite navigation system of claim 12, wherein the first RFID apparatus is configured to measure a roll angle of a car.

14. The composite navigation system of claim 13, wherein the signal processing system is configured to determine a sum of the pitch angle and the roll angle.

15. The composite navigation system of claim 14, wherein the signal processing system is configured to determine a method of early warning.

16. The composite navigation system of claim 13, wherein the plurality of inclinometers are configured to determine the roll and pitch angles.

17. The composite navigation system of claim 16, wherein the plurality of inclinometers are used on a combination vehicle and the signal processing system is configured to determine a sum of a plurality of pitch angles of the combination vehicle or a sum of a plurality of roll angles of the combination vehicle.