Vehicle data storage and analysis system and methods
First Claim
1. An onboard device located on a machine for monitoring and recording data signals, said onboard device comprising:
- connector means for connecting a plurality of sensors mounted on said machine to said device;
record storage means for storing data records;
a central processing unit (CPU) for processing data signals produced by said sensors, said data signals being representative of said machine parameters;
program storage means for storing an operating program for controlling said CPU such that said CPU operates in accordance with said operating program to;
sample said data signals at a first predetermined frequency;
create data records corresponding to said sampled data signals at a second predetermined frequency, said first predetermined frequency being an integer multiple of said second predetermined frequency;
compare each of said data signals in each said data record to a corresponding predetermined threshold value to determine if any of said data signals equals or exceeds said corresponding predetermined threshold value to thus indicate a triggering event;
store data records occurring at said second predetermined frequency;
store data records occurring at a third predetermined frequency during a predetermined period immediately preceding a triggering event in said record storage means, said first predetermined frequency being an integer multiple of said third predetermined frequency; and
store data records occurring at said third predetermined frequency during a second predetermined period immediately succeeding a triggering event in said record storage means.
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Accused Products
Abstract
A system for monitoring, recording, and analyzing operational and incident data from a machine, particularly a vehicle. The system includes a computer controlled device, mounted onboard the machine, which collects and records data supplied to it from a variety of sensors positioned to sense operational parameters of the machine. The device provides for storing operational data at one frequency while storing data surrounding an incident or triggering event at a higher frequency, thus, recording incident data with a higher resolution than that associated with normal operating data. The incident data is stored at a higher frequency for predetermined periods both before and after the incident or triggering event.
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Citations
15 Claims
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1. An onboard device located on a machine for monitoring and recording data signals, said onboard device comprising:
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connector means for connecting a plurality of sensors mounted on said machine to said device; record storage means for storing data records; a central processing unit (CPU) for processing data signals produced by said sensors, said data signals being representative of said machine parameters; program storage means for storing an operating program for controlling said CPU such that said CPU operates in accordance with said operating program to; sample said data signals at a first predetermined frequency; create data records corresponding to said sampled data signals at a second predetermined frequency, said first predetermined frequency being an integer multiple of said second predetermined frequency; compare each of said data signals in each said data record to a corresponding predetermined threshold value to determine if any of said data signals equals or exceeds said corresponding predetermined threshold value to thus indicate a triggering event; store data records occurring at said second predetermined frequency; store data records occurring at a third predetermined frequency during a predetermined period immediately preceding a triggering event in said record storage means, said first predetermined frequency being an integer multiple of said third predetermined frequency; and store data records occurring at said third predetermined frequency during a second predetermined period immediately succeeding a triggering event in said record storage means. - View Dependent Claims (2, 3, 4, 5)
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6. A system for monitoring and recording machine parameters comprising:
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a plurality of sensors positioned for sensing said parameters and for producing data signals representative of the values of said parameters; a onboard device located on said machine for monitoring and recording said data signals provided by said sensors, said device comprising; connector means for connecting said sensors to said device; record storage means for storing data records; a central processing unit (CPU) for processing data signals produced by said sensors; program storage means for storing an operating program for controlling said CPU such that said CPU operates in accordance with said operating program to; sample said data signals at a predetermined frequency; create data records corresponding to said sampled data signals at a second predetermined frequency, said first predetermine frequency being an integer multiple of said second predetermined frequency; compare each of said data signals in each said data record to a corresponding predetermined threshold value to determine if any of said data signals equals or exceeds said corresponding predetermined threshold value to thus indicate a triggering event; store data records occurring at said second predetermined frequency; store data records occurring at a third predetermined frequency during a predetermined period immediately preceding a triggering event in said record storage means, said first predetermined frequency being an integer multiple of said third predetermined frequency; and store data records occurring at said third predetermined frequency during a second predetermined period immediately succeeding a triggering event in said record storage means. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of monitoring and recording data signals provided by sensors mounted on a machine using an onboard device having a central processing unit (CPU) for processing said data signals, a record storage means for storing data records, and a program storage means for storing an operating program for controlling said CPU such that said CPU operates in accordance with said operating program, said method comprising:
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sampling said data signals at a first predetermined frequency; creating data records corresponding to said sampled data signals at a second predetermined frequency, said first predetermined frequency being an integer multiple of said second predetermined frequency; comparing each of said data signals in each said data record to a corresponding predetermined threshold value to determine if any of said data signals equals or exceeds said corresponding predetermined threshold value to thus indicate a triggering event; store data records occurring at said second predetermined frequency; storing data records occurring at a third predetermined frequency during a predetermined period immediately preceding a triggering event in said record storage means, said first predetermined frequency being an integer multiple of said third predetermined frequency; and storing data records occurring at said third predetermined frequency during a second predetermined period immediately succeeding a triggering event in said record storage means.
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Specification