Dark current excess prevention method in telematics terminal and apparatus therefor

• US 9,945,340 B2
• Filed: 11/18/2015
• Issued: 04/17/2018
• Est. Priority Date: 09/11/2015
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Jung, Jae Hoon
• Primary Examiner(s): Badii, Behrang
• Application Number:
  US14/945,386
• Publication Number:
  US 20170074916A1
• Time in Patent Office: 881 Days
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60R 16/033 characterised by the use of electrical cells or batteries for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36
• CPC Class Codes: F02N 11/0807 Remote means
• CPC Class Codes: F02N 2200/122 Atmospheric temperature
• CPC Class Codes: G01N 33/0065 using more than one threshold
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G06F 7/00 Methods or arrangements for processing data by operating upon the order or content of the data handled logic circuits H03K19/00
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005
• CPC Class Codes: G08B 1/08 using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
• CPC Class Codes: G08B 17/10 Actuation by presence of smoke or gases , e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
• CPC Class Codes: H02H 3/08 responsive to excess current responsive to abnormal temperature caused by excess current H02H5/04
• CPC Class Codes: H02H 3/087 for dc applications
• CPC Class Codes: H02H 3/20 responsive to excess voltage
• CPC Class Codes: H02H 7/08 for dynamo-electric motors
• CPC Class Codes: H02J 2310/46 for ICE-powered road vehicles
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/04 : Regulation of charging current or voltage
• CPC Class Codes: H02J 7/1423 : with multiple batteries
• CPC Class Codes: H02J 7/16 : Regulation of the charging current or voltage by variation of field
• CPC Class Codes: H02J 9/005 : using a power saving mode for copiers G03G15/5004

Abstract

A dark current excess prevention method in a telematics terminal installed in a vehicle includes: calculating a current consumption amount up to a present time upon sensing a transmission operation in a sleep mode; determining whether the calculated current consumption amount exceeds a predetermined dark current reference value; and determining that a dark current is exceeded when the calculated current consumption amount exceeds the dark current reference value.

Claims

1. A dark current excess prevention method for use in a telematics terminal installed in a vehicle, the method comprising:

providing a sleep mode where the telematics terminal is in a waiting status or receives a packet data from an external device and an active mode where the telematics terminal transmits to, and/or receives from, the external device another packet data;

monitoring and calculating a current consumption amount from a starting time of the sleep mode up to a transition time from the sleep mode to the active mode;

determining whether the calculated current consumption amount exceeds a predetermined dark current reference value; and

determining that a dark current is exceeded when the calculated current consumption amount exceeds the dark current reference value.

2. The dark current excess prevention method according to claim 1, wherein the current consumption amount is further calculated by combining a current amount consumed for all of reception operations up to the present time after the starting time of the sleep mode and a current amount consumed for all of transmission operations during the active mode.

3. The dark current excess prevention method according to claim 2, wherein the current amount consumed for all of the reception operations is calculated based on a precalculated average consumption current for each reception operation.

4. The dark current excess prevention method according to claim 2, wherein the current amount consumed for all of the transmission operations is calculated by multiplying a number of transmission operations by an average current amount consumed each transmission operation.

5. The dark current excess prevention method according to claim 1, further comprising:

transitioning to a protection mode when it is determined that the dark current is exceeded; and

transmitting a predetermined warning message indicating that remote start is needed to a predesignated user terminal in the protection mode.

6. The dark current excess prevention method according to claim 5, further comprising:

driving a predetermined remote start standby timer after transmitting the warning message; and

ceasing an overall operation of the telematics terminal when a remote start command is not received from the user terminal before expiry of the remote start standby timer.

7. The dark current excess prevention method according to claim 6, further comprising:

performing the remote start upon receiving the remote start command,

wherein the transition to the active mode is performed when the remote start is completed.

8. The dark current excess prevention method according to claim 1, further comprising:

sensing a temperature of the vehicle,

wherein the dark current reference value is dynamically compensated for based on the sensed temperature of the vehicle.

9. The dark current excess prevention method according to claim 8, wherein the dark current reference value decreases when the sensed temperature of the vehicle increases, and the dark current reference value increases when the sensed temperature of the vehicle decreases.

10. The dark current excess prevention method according to claim 1, further comprising:

calculating a battery charge level of the vehicle,

wherein the dark current reference value is determined based on the battery charge level of the vehicle.

11. A dark current excess prevention apparatus installed in a vehicle comprising:

a communication unit configured operate in a sleep mode in the vehicle where the communication unit is in a waiting status or receives a packet data from an external device and an active mode where the communication unit transmits to, and/or receives from, the external device another packet data; and

a controller configured to monitor and calculate a current consumption amount in the vehicle from a starting time of the sleep mode up to a transition time from the sleep mode to the active mode, determine whether the calculated current consumption amount exceeds a predetermined dark current reference value, and determine that a dark current is exceeded when the calculated current consumption amount exceeds the dark current reference value.

12. The dark current excess prevention apparatus according to claim 11, wherein the current consumption amount is further calculated by combing a current amount consumed for all of reception operations up to the present time after the starting time of the sleep mode and a current amount consumed for all transmission operations during the active mode.

13. The dark current excess prevention apparatus according to claim 12, wherein the current amount consumed for all of the reception operations is calculated based on a precalculated average consumption current for each reception operation.

14. The dark current excess prevention apparatus according to claim 12, wherein the current amount consumed for all of the transmission operations is calculated by multiplying a number of transmission operations by an average current amount consumed for each transmission operation.

15. The dark current excess prevention apparatus according to claim 11, wherein the controller is further configured to transition to a protection mode when it is determined that the dark current is exceeded and transmit a predetermined warning message indicating that remote start is needed to a predesignated user terminal in the protection mode.

16. The dark current excess prevention apparatus according to claim 15, further comprising:

a timer driving a predetermined remote start standby timer after the warning message is transmitted,

wherein the controller is further configured to stop an overall operation of a telematics terminal when a remote start command is not received from the user terminal before expiry of the remote start standby timer.

17. The dark current excess prevention apparatus according to claim 16, wherein the controller is further configured to initiate performance of the remote start upon receiving the remote start command and transition to the active mode upon completing remote start.

18. The dark current excess prevention apparatus according to claim 11, further comprising:

a temperature sensor sensing a temperature of the vehicle,

wherein the controller is further configured to dynamically compensate for the dark current reference value based on the sensed temperature of the vehicle.

19. The dark current excess prevention apparatus according to claim 18, wherein the dark current reference value decreases when the sensed temperature of the vehicle increases, and the dark current reference value increases when the sensed temperature of the vehicle decreases.

20. The dark current excess prevention apparatus according to claim 11, further comprising:

a charge level sensor calculating a battery charge level of the vehicle in which a telematics terminal is installed,

wherein the controller is further configured to determine the dark current reference value based on the battery charge level of the vehicle.