Activation of wireless module utilizing magnetic field data

• US 10,271,278 B2
• Filed: 11/17/2017
• Issued: 04/23/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Gentex Corporation
• Original Assignee: Gentex Corporation
• Inventors: Geerlings, Steven L.
• Primary Examiner(s): Phu, Sanh D
• Application Number:
  US15/816,091
• Publication Number:
  US 20180184376A1
• Time in Patent Office: 522 Days
• Field of Search: 4551275
• CPC Class Codes: G01R 33/02 Measuring direction or magnitude of magnetic fields or magnetic flux G01R33/20 takes precedence
• CPC Class Codes: G01R 33/072 Constructional adaptation of the sensor to specific applications
• CPC Class Codes: G01R 33/091 Constructional adaptation of the sensor to specific applications
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless communication module is disclosed. The wireless communication module comprises a magnetic sensor configured to detect magnetic field data and a communication circuit. A controller is in communication with the magnetic sensor and the communication circuit. The controller is configured to monitor the magnetic field data and compare the magnetic field data to a first predetermined threshold. In response the magnetic field data exceeding the first threshold, the controller is configured to output an activation signal to the communication circuit. The communication circuit is configured to enter an active state in response to receiving the activation signal.

Claims

1. A wireless communication module comprising:

a magnetic sensor configured to detect magnetic field data;

a communication circuit;

a controller in communication with the magnetic sensor and the communication circuit, the controller configured to;

monitor the magnetic field data;

compare a change in the magnetic field data to a first predetermined threshold; and

output an activation signal to the communication circuit in response to a change in the magnetic field data exceeding the first threshold;

wherein the communication circuit is configured to enter an active state in response to receiving the activation signal, wherein the controller is further configured to output a sleep signal configured to cause the wireless communication module to enter a dormant state in response to the magnetic field data being less than a second predetermined threshold for a predetermined period of time while the wireless communication module is in the active state.

2. The device according to claim 1, wherein the controller is further configured to monitor the magnetic field data while the wireless communication module is in the active state.

3. The device according to claim 2, wherein the wireless communication module is configured to deactivate a scanning function configured to detect the wireless signal in response to the dormant state.

4. The device according to claim 1, wherein the first predetermined threshold and the second predetermined threshold correspond to changes in the magnetic field data identified by the controller.

5. The device according to claim 1, wherein the wireless communication module is configured to detect a wireless signal broadcast by an electronic toll reader in the active state, wherein the electronic toll reader is configured to apply a toll to an account associated with a vehicle.

6. The device according to claim 5, wherein the wireless communication module is configured to broadcast an identification code in response to detecting the wireless signal broadcast by the electronic toll reader.

7. A method for controlling a wireless communication module, the method comprising:

monitoring magnetic field data in a plurality of axes;

identifying a change in the magnetic field data;

comparing the change in the magnetic field to a first predetermined threshold;

activating a communication circuit to an active state in response to the change in the magnetic field data exceeding the first threshold;

in response to the active state, scanning for one or more wireless signals at a frequency; and

in response to the magnetic field being less than a second predetermined threshold for a predetermined period of time, deactivating a communication circuit to a dormant state causing the wireless communication module to deactivate the scanning for the one or more wireless signals.

8. The method according to claim 7, further comprising:

detecting a first wireless signal in the active state; and

in response to detecting the first wireless signal, emitting a second wireless signal.

9. The method according to claim 8, wherein the first wireless signal comprises a request from a wireless payment module for an identification signal identifying an account associated with the wireless communication module.

10. The method according to claim 9, wherein the second wireless signal comprises the identification signal indicating the account associated with the wireless communication module.

11. The method according to claim 7, further comprising:

monitoring the magnetic field data while the wireless communication module is in the active state.

12. The method according to claim 7, wherein the first predetermined threshold and the second predetermined threshold correspond to changes in the magnetic field data identified by the controller in one or more of the plurality of axes.

13. The method according to claim 7, wherein the wireless communication module is configured to detect a wireless signal broadcast by an electronic toll reader in the active state.

14. The method according to claim 13, wherein the wireless communication module is configured to broadcast an identification code in response to detecting the wireless signal broadcast by the electronic toll reader.

15. A wireless communication system for a vehicle, the system comprising:

a magnetic sensor configured to detect magnetic field data in a plurality of axes;

a communication circuit;

a controller in communication with the magnetic sensor and the communication circuit, the controller configured to;

monitor the magnetic field data;

compare a change in the magnetic field data to a predetermined threshold in an active state of the communication circuit; and

output a sleep signal to the communication circuit in response to the change in the magnetic field data being less than the predetermined threshold for a predetermined period of time, wherein the communication circuit is configured to enter a dormant state in response to receiving the sleep signal.

16. The system according to claim 15, wherein the communication circuit in the active state scans for a first wireless signal from an electronic toll reader, and wherein in response to the first wireless signal, the controller controls the communication circuit to transmit a second wireless signal.

17. The system according to claim 16, wherein the second wireless signal comprises an identification signal identifying an account associated with the wireless communication module.