Vehicular data collection and transmission system and method

• US 5,825,286 A
• Filed: 08/05/1996
• Issued: 10/20/1998
• Est. Priority Date: 05/08/1995
• Status: Expired due to Fees

• Current Assignee: Semisystems, Inc.
• Original Assignee: Semisystems, Inc.
• Inventors: Coulthard, John J.
• Primary Examiner(s): Lefkowitz, Edward
• Application Number:
  US08/692,117
• Time in Patent Office: 806 Days
• Field of Search: 340/442, 340/445, 340/431, 340/447, 73/146.4, 73/146.5, 73/146.8
• US Class Current: 340/447
• CPC Class Codes: B60C 23/009 having wheels on a trailer
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0433 Radio signals
• CPC Class Codes: B60C 23/0455 Transmission control of wireless signals
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C

Abstract

Selected vehicle operational parameters such as tire pressure, wheel temperature and vibration are sensed by sensors mounted on wheel modules secured to the individual vehicle wheels. The sensed parameters are converted to digital format and the resulting digital data is manipulated to determine if the data falls within predetermined operating ranges. The data and information resulting from the manipulation are used to modulate an RF signal transmitted to another location on the vehicle. Additional parameters are sensed at the second location, and calculations are performed on the data received from the wheel modules and the data sensed at the second location to display operational, efficiency and safety information to the vehicle operator and to make such information available to others such as vehicle owners and maintenance personnel.

Claims

1. A vehicle data collection system comprising:

(a) wheel module means mounted on a vehicle wheel inside a tire mounted on said wheel including;

i. a plurality of sensors each sensing a different vehicle operating parameter to provide an analog data signal representing said parameter;

ii. means for digitizing said data signals;

iii. microprocessing means connected to receive said digitized data signals and to encode such signals for transmission;

said microprocessor responsive to the receipt of digitized data signals corresponding to a sensed parameter for;

1. averaging a plurality of successive digitized data signals corresponding to said sensed parameter and storing said average;

2. averaging a second plurality of successive digitized data signals corresponding to said sensed parameter and storing said average;

3. averaging said first and second stored averages;

4. comparing said first and second stored averages to detect any change in said sensed parameter;

5. scheduling transmission of said data at predetermined intervals;

3. The combination set forth in claim 1 wherein said sensed parameters include tire pressure and wheel temperature.

4. The combination set forth in claim 1 wherein said sensed parameters include axial and radial wheel acceleration.

5. The combination set forth in claim 1 wherein said sensed parameters include wheel vibration.

6. The combination set forth in claim 1 wherein said sensed parameters include infrared sensed tire temperature.

7. The combination set forth in claim 1 wherein said sensed parameters include sound.

9. The method of claim 7 wherein said selected vehicle operating parameters include tire pressure and wheel temperature.

10. The method of claim 7 wherein said vehicle operating parameters include axial and radial wheel acceleration.

11. The method of claim 7 wherein said selected vehicle operating parameters include wheel vibration.

12. The method of claim 7 wherein said selected vehicle operating parameters include infrared sensed tire temperature.

13. The method of claim 7 wherein said selected vehicle operating parameters include sound.

15. The method of claim 13 wherein said selected vehicle operating parameters include wheel temperature and tire pressure.

16. The method of claim 13 wherein said selected vehicle operating parameters include axial and radial wheel acceleration.

17. The method of claim 13 wherein said selected vehicle operating parameters include wheel vibration.

18. The method of claim 13 wherein said selected vehicle operating parameters include infrared sensed tire temperature.

19. The method of claim 13 wherein said selected vehicle operating parameters include sound.

21. The combination set forth in claim 19 wherein said parameters include tire pressure and wheel temperature.

22. The combination set forth in claim 19 wherein said parameters include axial and radial wheel acceleration.

23. The combination set forth in claim 19 wherein said parameters include wheel vibration.

24. The combination set forth in claim 19 wherein said parameters include infrared sensed tire temperature.

25. The combination set forth in claim 19 wherein said parameters include sound.

27. The combination set forth in claim 25 wherein said parameters include tire pressure and wheel temperature.

28. The combination set forth in claim 25 wherein said parameters include axial and radial wheel acceleration.

29. The combination set forth in claim 25 wherein said parameters include wheel vibration.

30. The combination set forth in claim 25 wherein said parameters include infrared sensed tire temperature.

31. The combination set forth in claim 25 wherein said parameters include sound.

33. The combination set forth in claim 31 wherein said parameters include tire pressure and wheel temperature.

34. The combination set forth in claim 31 wherein said parameters include axial and radial wheel acceleration.

35. The combination set forth in claim 31 wherein said parameters include wheel vibration.

36. The combination set forth in claim 31 wherein said parameters include infrared sensed tire temperature.

37. The combination set forth in claim 31 wherein said parameters include sound.

2. reducing said predetermined interval if said change in said sensed parameter is greater than a predetermined percentage change;

iv. a transmitter connected to receive encoded signals from said microprocessor and to transmit said encoded signals;

(b) receiving means in said vehicle positioned remote from said wheel module for receiving said encoded data signals transmitted from said wheel modules;

(c) computer means, connected to said receiving means, for receiving said data signals; and

(d) display means connected to said computer for displaying said data.

8. A method of gathering vehicle data comprising;

(a) sensing selected vehicle operating parameters from within a vehicle tire mounted on a wheel on said vehicle;

(b) digitizing said data within said vehicle tire and transmitting, at predetermined intervals, said data outside said vehicle tire;

(c) reducing said predetermined intervals if the sensed operating parameter changes by predetermined percentage;

(d) receiving said data at a location remote from said vehicle tire;

(e) comparing said data to predetermined limits for each of said selected vehicle operating parameters;

(f) displaying said data; and

(g) energizing an alarm if said data is outside a corresponding predetermined limit for any of said selected vehicle operating parameters.

14. A method of collecting vehicle data comprising:

(a) sensing a plurality of selected vehicle operating parameters from within a vehicle tire mounted on a wheel on said vehicle;

(b) digitizing said data;

(c) averaging a first plurality of successive digitized data signals corresponding to a sensed parameter and storing said average;

(d) averaging a second plurality of successive digitized data signals corresponding to said sensed parameter and storing said average;

(e) averaging said first and second stored averages;

(f) comparing the first and second stored averages to detect any change in said sensed parameter;

(g) scheduling transmission of said data at predetermined intervals;

(h) reducing said predetermined interval if any such change in said sensed parameter is greater than a predetermined percentage change;

(i) transmitting said average of averages;

(j) receiving said data at a location remote from said vehicle tire;

(k) comparing said data to predetermined limits for each of said selected vehicle operating parameters; and

(l) energizing an alarm if said data is outside of a corresponding predetermined limit for any of said selected vehicle operating parameters.

20. A vehicle data collection system comprising:

(a) wheel module means mounted on a vehicle wheel including;

(i) a plurality of sensors each for sensing a different one of selected vehicle operating parameters;

(ii) digitizing means for digitizing data collected by said sensors;

(iii) transmission means for transmitting said digitized data at predetermined intervals;

(iv) an interval reducing means for reducing said predetermined intervals if the sensed operating parameter changes by a predetermined percentage;

(b) receiving means in said vehicle mounted remote from said wheel module for receiving data transmitted from said wheel module;

(c) a computer means, connected to said receiving means for receiving said data, said computer means comparing each of said different one of said plurality of operating data to a corresponding plurality of predetermined limits respectively for said data;

(d) display means connected to said computer for displaying said data to an operator and for presenting an alarm when any of said plurality of data is outside a corresponding predetermined limit.

26. A vehicle data collection system comprising:

(a) wheel module means mounted on a vehicle wheel including;

(i) a plurality of sensors each for sensing a different one of selected vehicle operating parameters;

(ii) digitizing means for digitizing data collected by said sensors;

(iii) transmission means for transmitting said digitized data at predetermined intervals;

(iv) a interval reducing means for reducing said predetermined intervals if the sensed operating parameter changes by a predetermined percentage;

(b) receiving means in said vehicle mounted remote from said wheel module for receiving data transmitted from said wheel module;

(c) a computer means, connected to said receiving means for receiving said data and comparing the data to both predetermined efficiency limits with respect to each sensed operating parameter and to predetermined safety limits for each of said operating parameters;

(d) display means connected to said computer for displaying said data to an operator and for presenting an alarm when any of said plurality of data is outside of said predetermined efficiency limits or outside of said predetermined safety limits.

32. A vehicle data collection system comprising:

(a) wheel module means mounted on a vehicle wheel inside a tire mounted on said wheel including;

(i) a plurality of sensors each for sensing a different one of selected vehicle operating parameters;

(ii) digitizing means for digitizing data collected by said sensors;

(iii) transmission means for transmitting said digitized data at predetermined intervals;

(iv) a interval reducing means for reducing said predetermined intervals if the sensed operating parameter changes by a predetermined percentage;

(b) receiving means in said vehicle mounted remote from said wheel module for receiving data transmitted from said wheel module;

(c) a computer means, connected to said receiving means for receiving said data, said computer means comparing each of said different one of said plurality of operating data to a corresponding plurality of predetermined limits respectively for said data;

(d) display means connected to said computer for displaying said data to an operator and for presenting an alarm when any of said plurality of data is outside a corresponding predetermined limit.