DATA RECORDING APPARATUS FOR VEHICLE

• US 20070050109A1
• Filed: 08/11/2006
• Published: 03/01/2007
• Est. Priority Date: 08/23/2005
• Status: Active Grant

• Current Assignee: Calsonic Kansei Corporation
• Original Assignee: Calsonic Kansei Corporation
• Inventors: Ozawa, Tetsuya
• Granted Patent: US 7,266,433 B2
• Time in Patent Office: Days
• US Class Current: 701/35
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

A data recording apparatus for a vehicle includes a vehicle state detecting sensor configured to detect a state of the vehicle at the time of traveling and to provide an output value, a recorder configured to record the output value of the vehicle state detecting sensor, and a controller configured to record the output value of the vehicle state detecting sensor into the recorder; the controller has a counter configured to perform counting repeatedly according to a counting frequency and a counting range which are set based on a frequency band of an output signal of the vehicle state detecting sensor, a count value recorder configured to record a count value of the counter, and a judging section configured to judge a state of the output value of the vehicle state detecting sensor.

Claims

1. A data recording apparatus for a vehicle, comprising:

a vehicle state detecting sensor configured to detect a state of the vehicle at the time of traveling and to provide an output value;

a recorder configured to record the output value of the vehicle state detecting sensor; and

a controller configured to record the output value of the vehicle state detecting sensor into the recorder,

the controller including;

a counter configured to perform counting repeatedly according to a counting frequency and a counting range which are set based on a frequency band of an output signal of the vehicle state detecting sensor;

a count value recorder configured to record a count value of the counter; and

a judging section configured to judge a state of the output value of the vehicle state detecting sensor,

wherein the controller is configured to record the output value of the vehicle state detecting sensor into the recorder every time when the count value of the counter meets a predetermined value, and

wherein the controller is configured to record the count value of the counter, at a time point in which the output value of the vehicle state detecting sensor has satisfied a predetermined condition, into the count value recorder, when the judging section has judged that the output value of the vehicle state detecting sensor satisfies the predetermined condition.

2. The data recording apparatus for a vehicle according to claim 1, wherein the vehicle state detecting sensor comprises a plurality of vehicle state detecting sensors each having the equal frequency band of the output signal, and the predetermined value of the count value is individually set for each of the plurality of vehicle state detecting sensors.

3. The data recording apparatus for a vehicle according to claim 1, wherein the vehicle state detecting sensor comprises a plurality of vehicle state detecting sensors each having the equal frequency band of the output signal, the predetermined value of the count value is set for each of the plurality of vehicle state detecting sensors and the predetermined value of the count value set for each of the plurality of vehicle state detecting sensors is different each other.

4. The data recording apparatus for a vehicle according to claim 1, wherein the vehicle state detecting sensor comprises a plurality of vehicle state detecting sensors each having the different frequency band of the output signal, and the counter comprises a plurality of counters, the counting frequency and the counting range of each of the plurality of counters being set based on the frequency band and count timing of each of the plurality of counters being synchronized each other, and

wherein the predetermined value of the count value is individually set to the counter corresponding to each of the plurality of vehicle state detecting sensors.

5. The data recording apparatus for a vehicle according to claim 1,

wherein

the vehicle state detecting sensor comprises a plurality of vehicle state detecting sensors each having the different frequency band of the output signal, and the counter comprises a plurality of counters, the counting frequency and the counting range of each of the plurality of counters being set based on the frequency band and count timing of each of the plurality of counters being synchronized each other, and

wherein the predetermined value of the count value is set to the counter corresponding to each of the plurality of vehicle state detecting sensors, the predetermined value of the count value set to the counter corresponding to each of the plurality of vehicle state detecting sensors is different each other, and the count timing that the count value of each of the plurality of counters meets the predetermined value does not overlap each other.

6. The data recording apparatus for a vehicle according to claim 1, wherein the vehicle state detecting sensor comprises an acceleration sensor which detects impulsive force applied externally to the vehicle.

7. The data recording apparatus for a vehicle according to claim 1, wherein the vehicle state detecting sensor comprises an acceleration sensor which detects impulsive force applied externally to the vehicle and a traveling state detecting sensor which detects a traveling state of the vehicle.

13. The data recording apparatus for a vehicle according to claim 1, wherein the predetermined condition is that an output value of a specific vehicle state detecting sensor meets a predetermined value or more.

8. A data recording apparatus for a vehicle, comprising:

an acceleration sensor configured to detect impulsive force applied externally to the vehicle;

a traveling state detecting sensor configured to detect a traveling state of the vehicle;

a recorder configured to record an output value of each of the acceleration sensor and the traveling state detecting sensor;

a controller configured to record the output value of each of the acceleration sensor and the traveling state detecting sensor into the recorder,

the controller including;

a first counter configured to perform counting repeatedly according to a first counting frequency and a first counting range which are based on a frequency band of an output signal of the acceleration sensor;

a second counter configured to perform counting repeatedly, in synchronization with count timing of the first counter, according to a second counting frequency and a second counting range which are based on a frequency band of an output signal of the traveling state detecting sensor;

a count value recorder configured to record a count value of each of the first counter and the second counter; and

a judging section configured to judge a state of the output value of the acceleration sensor,

wherein the controller is configured to record the output value of the acceleration sensor into the recorder every time when the count value of the first counter meets a first predetermined value, and to record the output value of the traveling state detecting sensor into the recorder every time when the count value of the second counter meets a second predetermined value, and

wherein the controller is configured to record the count value of each of the first counter and the second counter, at a time point in which the output value of the acceleration sensor has satisfied a predetermined condition, into the count value recorder, when the judging section has judged that the output value of the acceleration sensor satisfies the predetermined condition.

9. The data recording apparatus for a vehicle according to claim 8, wherein the acceleration sensor comprises a plurality of acceleration sensors, and the first predetermined value of the first counter is individually set for each of the plurality of acceleration sensors, and

wherein the traveling state detecting sensor comprises a plurality of traveling state detecting sensors, and the second predetermined value of the second counter is individually set for each of the plurality of traveling state detecting sensors.

10. The data recording apparatus for a vehicle according to claim 8, wherein the acceleration sensor comprises a plurality of acceleration sensors, the first predetermined value of the first counter is set for each of the plurality of acceleration sensors, and the first predetermined value of the first counter set for each of the plurality of acceleration sensors is different each other,

wherein the traveling state detecting sensor comprises a plurality of traveling state detecting sensors, the second predetermined value of the second counter is set for each of the plurality of traveling state detecting sensors, and the second predetermined value of the second counter set for each of the plurality of traveling state detecting sensors is different each other, and

wherein count timing that the count value of the first counter meets the first predetermined value does not overlap with count timing that the count value of the second counter meets the second predetermined value.

11. The data recording apparatus for a vehicle according to claim 8, wherein the acceleration sensor comprises at least one of a front acceleration sensor which is disposed near the front of the vehicle and detects impulsive force from the front of the vehicle, a central acceleration sensor which is disposed near the center of the vehicle and detects impulsive force from the front, right side and left side of the vehicle, a right side acceleration sensor which is disposed near the right side of the vehicle and detects impulsive force from the right side of the vehicle, and a left side acceleration sensor which is disposed near the left side of the vehicle and detects impulsive force from the left side of the vehicle.

12. The data recording apparatus for a vehicle according to claim 8, wherein the traveling state detecting sensor comprises at least one of a vehicle speed sensor which detects a vehicle speed of the vehicle, an engine rotation sensor which detects the number of rotation of a engine provided in the vehicle, a brake sensor which detects on and off of a brake of the vehicle and an accelerator sensor which detects an open degree of an accelerator of the vehicle.

14. The data recording apparatus for a vehicle according to claim 8, wherein the predetermined condition is that the output value of the acceleration sensor meets a predetermined value or more.

15. The data recording apparatus for a vehicle according to claim 11, wherein the predetermined condition is that at least one of an output value of the front acceleration sensor, an output value of the central acceleration sensor, an output value of right side acceleration sensor and an output value of the left side acceleration sensor meets a predetermined value or more.

16. The data recording apparatus for a vehicle according to claim 12, wherein the predetermined condition is that at least one of an output value of the front acceleration sensor, an output value of the central acceleration sensor, an output value of right side acceleration sensor and an output value of the left side acceleration sensor meets a predetermined value or more.