Door courtesy switch abnormality detection apparatus and method

• US 9,076,274 B2
• Filed: 11/27/2008
• Issued: 07/07/2015
• Est. Priority Date: 11/27/2008
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kamiya, Masachika
• Primary Examiner(s): Zeender, Florian
• Assistant Examiner(s): Haider, Fawaad
• Application Number:
  US12/863,023
• Publication Number:
  US 20110054735A1
• Time in Patent Office: 2,413 Days
• Field of Search: 701/36
• US Class Current: 1/1
• CPC Class Codes: B60R 25/245 where the antenna reception area plays a role
• CPC Class Codes: B60R 25/246 characterised by the challenge triggering
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2209/63 Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A door courtesy switch abnormality detection apparatus used in an on-vehicle system in which a door unlocked status is formed based on a wireless signal transmitted from an electronic key is disclosed. The apparatus is configured to generate information representing an abnormality in the door courtesy switch, if the electronic key in a cabin of a vehicle is detected by a antenna having the detection area thereof within the cabin of the vehicle in a situation where an ON/OFF signal of the door courtesy switch is not inverted after the door unlock operation is detected.

Claims

1. A door courtesy switch abnormality detection apparatus for use in an on-vehicle system having a door courtesy switch in which a door unlocked status is determined based on a wireless signal transmitted from an electronic key, said apparatus comprising:

an unlock detector configured to detect a door unlock operation;

a door open/close operation detector configured to detect door open and close operations based on an ON/OFF signal from the door courtesy switch;

a smart electronic control unit and a body electronic control unit configured to generate information identifying a presence of an abnormality in the door courtesy switch; and

the smart electronic control unit being configured to determine whether the electronic key exists in a cabin of a vehicle based on a status of a radio wave transmitted from the electronic key under a situation where the door open operation is not detected by the door open/close operation detector, if the door unlock operation is detected by the unlock detector,

wherein;

the smart electronic control unit and the body electronic control unit;

(i) generate the information identifying the presence of the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and a door open operation after a door unlock operation is not detected by the door open/close operation detector, and (ii) not generate the information identifying the presence of the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and the door open operation is detected after a door unlock operation by the door open/close operation detector.

2. The door courtesy switch abnormality detection apparatus as claimed in claim 1, wherein

said apparatus is installed in a vehicle having an automatic lock function in which a door lock operation is performed automatically when the door open operation is not detected within a predetermined time after a door unlock operation is performed, and

the smart electronic control unit performs the determination within the predetermined time.

3. The door courtesy switch abnormality detection apparatus as claimed in claim 1, wherein the unlock detector detects the door unlock operation in response to a door unlock command based on a wireless signal transmitted from the electronic key.

4. The door courtesy switch abnormality detection apparatus as claimed in claim 1, wherein the smart electronic control unit and the body electronic control unit generate the information representing the abnormality in the door courtesy switch if it is determined by the smart electronic control unit that the electronic key exists in the cabin of the vehicle more than a predetermined number of times.

5. The door courtesy switch abnormality detection apparatus as claimed in claim 1, further comprising:

a lock detector configured to detect a door lock operation; and

the smart electronic control unit being further configured to determine whether the electronic key exists in the cabin of the vehicle based on a status of a radio wave transmitted from the electronic key if the door lock operation is detected by the lock detector,

wherein the smart electronic control unit performs the determination if the door unlock operation is detected by the unlock detector in a door locked situation where it is determined by the smart electronic control unit that the electronic key does not exist in the cabin of the vehicle.

11. The door courtesy switch abnormality detection apparatus as claimed in claim 1, wherein the smart electronic control unit and the body electronic control unit generate a diagnostic signal that includes information representing a time of occurrence of the abnormality.

6. An on-vehicle system for use with a vehicle having a function of detecting an abnormality in a door courtesy switch, comprising:

the door courtesy switch;

an antenna having a detection area thereof within a cabin of the vehicle; and

an electronic control apparatus including;

an unlock detector configured to detect a door unlock operation;

a door open/close operation detector configured to detect door open and close operations from the door courtesy switch;

a smart electronic control unit configured to determine whether the electronic key exists in a cabin of a vehicle based on a status of a response signal transmitted from the electronic key, said response signal responding to a signal transmitted from the antenna; and

a body electronic control unit configured to generate information identifying a presence of an abnormality in the door courtesy switch;

wherein the smart electronic control unit performs the determination in response to an ON/OFF signal of the door courtesy switch being not inverted after the door unlock operation is detected by the unlock detector, and

the smart electronic control unit and the body electronic control unit;

(i) generate the information representing the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and a door open operation after the door unlock operation is not detected by the door open/close operation detector, and (ii) not generate the information identifying the presence of the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and the door open operation is detected after a door unlock operation by the door open/close operation detector.

7. The on-vehicle system as claimed in claim 6, further comprising:

the body electronic control unit being further configured to perform a door lock operation if the ON/OFF signal of the door courtesy switch is not inverted within a predetermined time after the door unlock operation is detected by the unlock detector, wherein

the smart electronic control unit performs the determination within the predetermined time.

8. The on-vehicle system as claimed in claim 7, wherein the body electronic control unit being further configured to extend the predetermined time if it is determined by the smart electronic control unit that the electronic key exists in the cabin of the vehicle.

9. A door courtesy switch abnormality detection method for use in an on-vehicle system having a door courtesy switch and in which a door unlocked status is determined based on a wireless signal transmitted from an electronic key, said method comprising:

an unlock detecting step of detecting a door unlock operation;

a door open operation detecting step of detecting a door open operation based on an ON/OFF signal from the door courtesy switch if the door unlock operation is detected in the unlock detecting step;

a determining step of determining whether the electronic key exists in a cabin of a vehicle based on a status of a radio wave transmitted from the electronic key in response to the door open operation being not detected in the door open operation detecting step; and

an information generating step of generating information identifying;

(i) a presence of an abnormality in the door courtesy switch when it is determined in the determining step that the electronic key exists in the cabin of the vehicle by an antenna having a detection area thereof within the cabin of the vehicle and a door open operation after the door unlock operation is not detected, or (ii) an absence of the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and the door open operation is detected after a door unlock operation.

10. A door courtesy switch abnormality detection apparatus for use in a vehicle having a door courtesy switch, an antenna having a detection area thereof within a cabin of the vehicle, and in which a door unlocked status is determined based on a wireless signal transmitted from an electronic key, the door courtesy switch abnormality detection apparatus comprising:

a processor programmed to;

detect a door unlock operation;

detect door open and close operations from the door courtesy switch;

detect a presence of the electronic key in a cabin of the vehicle; and

generate information identifying;

(i) a presence of an abnormality in the door courtesy switch when the electronic key is detected in the cabin of the vehicle by the antenna, in response to an ON/OFF signal of the door courtesy switch being not inverted after a door unlock operation is detected such that a door open operation after the door unlock operation is not detected, or (ii) an absence of the abnormality in the door courtesy switch when it is determined that the electronic key exists in the cabin of the vehicle and the door open operation is detected after a door unlock operation.