AU781954B2 - Vehicle speed control system - Google Patents
Vehicle speed control system Download PDFInfo
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- AU781954B2 AU781954B2 AU15544/02A AU1554402A AU781954B2 AU 781954 B2 AU781954 B2 AU 781954B2 AU 15544/02 A AU15544/02 A AU 15544/02A AU 1554402 A AU1554402 A AU 1554402A AU 781954 B2 AU781954 B2 AU 781954B2
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- speed
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- vehicle speed
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Description
P/00/0 1128/5191 Regulation 3.2(2)
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT a Application Number: Lodged: a a a. a a a.
a a Invention Title: VEHICLE SPEED CONTROL SYSTEM The following statement is a full description of this invention, including the best method of performing it known to :-us VEHICLE SPEED CONTROL SYSTEM TECHNICAL FIELD The present invention relates generaiiy to automotive dynamics, and more particularly to a vehicle speed control system.
BACKGROUND ART Due to the current density of traffic on the roads, motor vehicle operators are flooded with information. Consequently, operating a motor vehicle is a complex procedure in which various situations arise in which the operator has limited or little time to adjust the vehicle speed to a pre-determined legal or 10 operationally safe speed level.
Many previously known speed governing systems have allowed the operator to either set a maximum, minimum, or range of vehicle speeds. A disadvantage to these systems is that speed-setting devices require continual S engagement and disengagement to meet changes in driving conditions.
Currently, speed governing systems control the engine throttle or initiate a braking sequence when the vehicle speed is approaching or is beyond the pre-set S. speed or range. Current systems also include override mechanisms for speed controllers during emergency situations. Automatic switching to safe speeds, *however, would reduce need for driver awareness during emergency situations and thereby reduce need for a manual override.
Operator limitations such as: probationary licenses, learning permits, and operator drowsiness are further examples of when an automatic speed governor would substantially reduce concern for maintaining speeds within a restricted or comfortable range.
The disadvantages associated with current speed control techniques have made it apparent that a new technique to regulate automobile speeds is needed.
The new technique should automatically switch the automobile to safe comfortable speeds and should have a network of speed limiting generators to limit speeds in potentially hazardous situations. The present invention is directed to these ends.
2 SUMMARY OF THE INVENTION The present invention provides a vehicle speed control system. The present invention also provides a plurality of speed limiting signal generators to activate speed regulators within the vehicle, thereby enabling a regulated vehicle speed to be adapted automatically to changes in driving conditions.
In one aspect, the present invention provides a vehicle speed control system, including: a first speed signal generator adapted to generate a first speed limiting signal; a second speed signal generator adapted to generate a second speed limiting signal; a sensor coupled to the vehicle, said sensor adapted to detect said first and said second speed limiting signals; an actuator, coupled to the vehicle for activating a vehicle speed regulator; and a controller, coupled to the vehicle, for receiving said first and said second speed limiting signals from said sensor, said controller further generating a vehicle speed regulator signal as a function of at least one of said first and said e.o..second speed limiting signals, said controller controlling said actuator in response 20 to said vehicle speed regulator signal.
S-In another aspect, the present invention provides a method for limiting a vehicle speed including: generating a first speed limiting signal; generating a second speed limiting signal; 25 sensing at least one of said first and said second speed limiting signals; ~receiving, in a controller, said at least one of said first and said second speed limiting signals; generating a vehicle speed regulator signal in said controller as a function S of said at least one of said first and said second speed limiting signals; controlling an actuator in response to said vehicle speed regulator signal; and activating a vehicle speed regulator through said actuator.
In a further aspect, the present invention provides a vehicle speed control system, including: a plurality of internal vehicle speed signal generators adapted to generate a first plurality of speed limiting signals; a plurality of external vehicle speed signal generators adapted to generate a second plurality of speed limiting signals; a sensor coupled to the vehicle, said sensor adapted to detect said first and said second pluralities of speed limiting signals; an actuator, coupled to the vehicle for activating a vehicle speed regulator; and a manual switch coupled to the vehicle for activating a controller, said controller, coupled to the vehicle, for receiving said first and said second pluralities of speed limiting signals from said sensor, said controller further generating a vehicle speed regulator signal as a function of a least velocity speed limiting signal from said first and said second pluralities of speed limiting signals, said controller controlling said actuator in response to said vehicle speed regulator signal.
Additional advantages and features of the present invention will become apparent from the description that follows and may be realized by the S: 20 instrumentalities and combinations particularly pointed out in the appended claims, taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a vehicle speed control system in accordance with a preferred embodiment of the present invention; 25 FIGURE 2 is view of the vehicle in FIGURE 1 in accordance with a preferred embodiment of the present invention; and FIGURE 3 is a block diagram of a vehicle speed control system in accordance with a preferred embodiment of the present invention.
DETAILED
DESCRIPTION
The present invention is illustrated with respect to a vehicle speed control system, particularly suited to the automotive field. The present invention is, however, applicable to various other uses that may require speed control systems, as will be understood by one skilled in the art.
Referring to FIGURE 1 and FIGURE 2, a vehicle speed control system 10, in accordance with a preferred embodiment of the present invention, is illustrated.
The system 10 includes several speed signal generators 12 adapted to generate 0 S specific speed limiting signals. The system 10 contains a sensor 14 coupled to the vehicle 15 driving on a road 16. The sensor 14 is adapted to detect speed iimitin signais. Arn aciuaior i7, which activates a vehicle speed regulator i8, is also coupled to the vehicle 15. A controller 20, coupled to the vehicle receives the speed limiting signals from the sensor 14. The controller 20 further generates a vehicle speed regulator signal and controls the actuator 17 in response to the vehicle speed regulator signal. Once the speed regulator 18 is activated, it sets a maximum speed on the speedometer 22. The speed regulator gauge is here represented as a marker 24 indicating a speed the speedometer indicator 26 is limited to.
The system 10 is embodied with several speed signal generators both internal and external to the vehicle 15. The signal generators are embodied as both actively transmitting a speed limiting signal and as passively containing o o circuitry that, when detected by the sensor 14 and received by the controller commands the controller 20 to regulate vehicle speed. In the current embodiment, several signal generators 12 are adapted to generate specific S• generator signals, however the invention is alternately embodied with at least two speed signal generators adapted to generate at least two speed limiting signals.
In other words, each speed signal generator sends a pre-set speed signal that is ideally suited for the generator location.
Ideal locations for external vehicle speed signal generators are road signs, traffic signals, or traffic safety zones such as: stop lights 28, yield signs 30, stop signs 32, speed limit signs 34, school zones (school zone signs 36), and road construction zones (road construction signs 38). Signal generators are further optimally attached to separate vehicles and separate vehicle components, such as: bicycle reflectors and brake lights. Alternate embodiments include signal generators coupled to articles of pedestrian clothing such as tennis shoes 39. It is to be understood, however, that numerous other locations in the near vicinity of the locations mentioned would also function substantially well as speed signal generator locations.
The system 10 ideally includes at least one external vehicle speed signal generator coupled to a global positioning system 40. In this embodiment, the global positioning system 40 tracks the vehicle 15, and when the vehicle 15 is travelling substantially above the speed limit in a certain area a residential zone), the global positioning system generates a speed limiting signal to limit the 18 ,1 LI I W U1%, V- lllll III LII.L iI I II a S eIItL-; II ILIlUUeU III LlI YIUUdI positioning system 40 also functions well coupled to a transponder system, where a transponder sends speed limiting signals to the vehicle 15, as is understood in the art.
The system 10 also includes external vehicle speed signal generators coupled to emergency vehicles. This aspect of the system 10 creates a failsafe for emergency vehicles, especially in cases of hearing impaired vehicle operators.
When an emergency vehicle 42 is en route to an emergency, the emergency o vehicle 42 engages the speed signal generator to limit the maximum speed of the vehicle 15 in the path of the emergency vehicle 42.
The system 10 may also include external vehicle speed signal generators coupled to disabled vehicles. When a vehicle becomes disabled, the speed signal generator activates through, for example, engagement of the disabled vehicle hazard light switch to limit speeds of vehicles that are approaching the disabled vehicle 44. Various alternate means for activating a signal generator in conjunction with engagement of disabled vehicle hazard devices will be "understood by one skilled in the art. This embodiment of the invention substantially minimizes risk of collision with the disabled vehicle 44.
The system 10 ideally includes internal vehicle speed signal generators that generate speed limiting signals when vehicle safety devices, such as seat belts 46 or headlamps, are disengaged. Other internal vehicle speed signal generators include inadequate tire pressure speed signal generators (located near the vehicle tires 48) and limited or restricted license speed signal generators.
Erratic vehicle operation caused by a drowsy driver or a driver under the influence of a controlled substance) is also regulated through the system A substantially erratic driving signal is determined through data from at least one steering wheel monitoring sensor or at least one pedal monitoring sensor. It is to be understood that numerous operator sensors and combinations of sensors may be added to include additional driver movements and parameters, as will be understood by one skilled in the art.
One skilled in the art should further understand that algorithms, using the engine controller 20 and the ignition switch position (to determine that the engine ic nft rllnn dn hnr e h ;k sin othn" nh f exmp e are 10 e b i I 71 |tO IJ 1U1 8Xa.M}llll alU a.IO il IUUU It lU in the system 10. These algorithm recognize vehicle stall conditions the engine warning light comes on), and speed limiting signals are activated in response to the algorithms through the controller Collision avoidance systems incorporated with remote sensors are also included in an additional embodiment of the current invention. When a vehicle or an obstacle is in the path of the vehicle 15, the remote sensors detect data, which is subsequently received by the vehicle controller 20. Collision avoidance S.:i systems typically include at least one crash mitigation device, such as: an airbag crash sensor, airbag deployment sensor, or fuel cutoff switch. The aforementioned sensors function well as additional speed limiting sensors when a collision is imminent or when general crash avoidance is required, as will be understood by one skilled in the art.
The system 10 is embodied with a manual switch 50, which gives the vehicle operator control to initiate speed limiting operations by engaging the controller 20, as will be understood by one skilled in the art. It is to be understood that the manual switch 50 is alternately embodied with attachments to shut off various other components of the system 10, such as the actuator 17 or the sensor 14.
The sensor 14, which is adapted to detect speed limiting signals, is embodied as a remote sensor such as a radar, lidar or vision based sensor.
Radar and lidar sensors receive speed limiting signals while vision based sensors analyze visual data by reading the speeds off speed limit signs). The system 10 is illustrated with respect to a single sensor 14, however, it is to be understood that numerous sensors and sensing systems may be added to the system 10 for optimal speed limitation, as will be understood by one skilled in the art.
Referring to FIGURE 3, a block diagram of a vehicle speed control system, in accordance with a preferred embodiment of the present invention, is illustrated.
Logic starts in inquiry block 52 where an inquiry is made whether the speed generator is turned on. For a negative response, operation block 54 activates, and the operator controls the vehicle speed maximum, as will be understood by one skilled in the art.
thPAise blrock 56 activates;~ and( an r r. ,,uI l 5 v6 61 t; U ll IUIIY V I d WI lhL W llfl UIt:; sensor is receiving speed limiting signals. For a negative response, operation block 54 activates, and the operator controls the vehicle speed maximum, as will be understood by one skilled in the art.
Otherwise, operation block 58 activates, and the controller receives sensor data and generates a vehicle speed regulation signal. Important to note is that the controller typically generates the vehicle speed regulation signal in response to the least velocity speed limiting signal. The controller contains logic operative to determine which speed limiting signal has the least velocity, as will be understood by one skilled in the art. Following operation block 58, operation block 60 activates, and the controller activates the actuator in response to the vehicle speed regulator signal. Subsequently, operation block 62 activates, and the actuator activates the vehicle speed regulator, whereby the vehicle speed is S. limited in operation block 64.
In operation, in view of FIGURES 1 and 2, the vehicle 15 drives on a road 16 regulated by speed signal generators 12 with the manual switch 50 indicating that the controller 20 is engaged. Important to note is that the manual switch is alternately embodied as a voice command, key activation device or numerous other switch devices. Also important to note is that the system 10 ideally includes a manual override. The manual override is embodied as a voice override or pedal sequence override to allow the operator to exceed the set maximum speed, as will be understood by one skilled in the art.
As the vehicle 15 approaches lower speed zones or situations where a lower speeds substantially increase control of the vehicle 15 (where these zones and situations are coupled to or near to speed signal generators), various speed signal generators 12 send speed limiting signals to the vehicle The speed limiting signals are received in the sensor 14, as will be understood by one skilled in the art. The controller 20 then interprets the sensed data, creates a speed regulator signal, which is the vehicle speed limiting signal based on and responding to the sensed data, and activates the actuator 17 in response to the speed regulator signal. The actuator 17 activates the vehicle speed regulator 18, which is responsible for setting the maximum speed marker to the desired speed.
A.s n illusttiv a a spee signal generator fron-m a disabled C V IIJIV U a a aI 1 yIICi a LUI 1101 vehicle 44 sends a speed limiting signal to the vehicle 15 to limit the vehicle speed to a controlled speed. This automatic speed limiting is particularly helpful in situations where visibility is diminished due to fog or rain, as will be understood by one skilled in the art.
From the foregoing, it can be seen that there has been brought to the art a new vehicle speed control system 10. It is to be understood that the preceding description of the preferred embodiment is merely illustrative of some of the many specific embodiments that represent applications of the principles of the present invention. Numerous and other arrangements would be evident to those skilled in the art without departing from the scope of the invention as defined by the following claims.
"Comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not ,preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
Claims (37)
1. A vehicle speed control system, including" a first speed signal generator adapted to generate a first speed limiting signal; a second speed signal generator adapted to generate a second speed limiting signal; a sensor coupled to the vehicle, said sensor adapted to detect said first and said second speed limiting signals; an actuator, coupled to the vehicle for activating a vehicle speed regulator; and a controller, coupled to the vehicle, for receiving said first and said second speed limiting signals from said sensor, said controller further generating a vehicle speed regulator signal as a function of at least one of said first and said second speed limiting signals, said controller controlling said actuator in response to said vehicle speed regulator signal.
2. The system of claim 1, wherein said first speed signal generator further *o includes a signal generator coupled to a road sign.
3. The system of claim 1, wherein said first speed signal generator is coupled to a global positioning system. 0
4. The system of claim 1, wherein said first speed signal generator is coupled to an emergency vehicle. 0go0 The system of claim 1, wherein said first speed signal generator is coupled to a traffic signal. 0.900:
6. The system of claim 1, wherein said first speed signal generator is coupled to a disabled vehicle.
7. The system of claim 6, wherein said first speed signal generator is activated by a hazard light switch coupled to said disabled vehicle.
8. The system of claim 1, wherein said first speed signal generator is coupled to a road construction zone.
9. The system of claim 1, wherein said first speed signal generator is coupled to a second vehicle. The system of claim 1, wherein said first speed signal generator is coupled to an article of pedestrian clothing.
11. The system of claim 1, wherein said first speed signal generator is coupled to the vehicle.
12. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a disengaged safety device.
13. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a crash mitigation device.
14. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a manual engagement of said first speed signal generator. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a detection of inadequate tire pressure.
16. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a restricted license signal from a restricted license.
17. The system of claim 11, wherein said first speed signal generator is adapted to generate said first sneed !imitinn sinnaI in resnnse to data from n ,ehicle transponder system.
18. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to data from vehicle obstacle sensors.
19. The system of claim 11, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to a substantially erratic driving signal. The system of claim 19, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to said substantially erratic driving signal determined through data from at least one steering wheel monitoring sensor.
21. The system of claim 19, wherein said first speed signal generator is adapted to generate said first speed limiting signal in response to said substantially erratic driving signal determined through data from at least one pedal monitoring sensor. CCC Ci
22. A method for limiting a vehicle speed including: generating a first speed limiting signal; generating a second speed limiting signal; sensing at least one of said first and said second speed limiting signals; receiving, in a controller, said at least one of said first and said second speed limiting signals; generating a vehicle speed regulator signal in said controller as a function of said at least one of said first and said second speed limiting signals; controlling an actuator in response to said vehicle speed regulator signal; and activating a vehicle speed regulator through said actuator. 11
23. The method of claim 22 wherein the step of generating a vehicle speed regulator signal further includes determining which of said first and said second peed limitinn cinnile nIo nndin# a least %rdorty and generating said vehicle J yluiv uvuiiiuv IJllr.'IlCI U U ILI IIIll~lt speed regulator signal in response to said least velocity of said first and said second speed limiting signals.
24. A vehicle speed control system, including: a plurality of internal vehicle speed signal generators adapted to generate a first plurality of speed limiting signals; a plurality of external vehicle speed signal generators adapted to generate a second plurality of speed limiting signals; a sensor coupled to the vehicle, said sensor adapted to detect said first and said second pluralities of speed limiting signals; an actuator, coupled to the vehicle for activating a vehicle speed regulator; and a manual switch coupled to the vehicle for activating a controller, said controller, coupled to the vehicle, for receiving said first and said second pluralities of speed limiting signals from said sensor, said controller further generating a vehicle speed regulator signal as a function of a least velocity speed limiting signal from said first and said second pluralities of speed limiting signals, S.said controller controlling said actuator in response to said vehicle speed regulator signal.
25. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a road sign.
26. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a global 5o positioning system.
27. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to an emergency vehicle. 12
28. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a traffic signal.
29. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a disabled vehicle. The system of claim 29, wherein said signal generator coupled to said disabled vehicle is activated by a hazard light switch coupled to said disabled vehicle.
31. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a road construction zone.
32. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to a second vehicle.
33. The system of claim 24, wherein said plurality of external vehicle speed signal generators further includes a signal generator coupled to an article of pedestrian clothing. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate one of said second plurality of speed limiting signals in response to a disengaged safety device.
35. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate one of said second plurality of speed limiting signals in response to a crash mitigation device. 34. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate one of said second plurality of speed limiting signals in response to a dismanual engagement of said plurality of internal vehicle speed signal generators. 0 35. The system of claim 24, wherein said plurality of internal vehicle speed signal OlO... generators is adapted to generate one of said second plurality of speed limiting o. signals in response to a crash mitigation device. **O•000
36. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate one of said second plurality of speed limiting signals in response to a manual engagement of said plurality of internal vehicle speed signal generators. limiting signals in response to a manual engagement of said plurality of internal vehicle speed signal generators.
37. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to a detection of inadequate tire pressure.
38. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to a restricted license signal from a restricted license.
39. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to a substantially erratic driving signal.
40. The system of claim 39, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to said substantially erratic driving signal determined through data from at least one steering wheel monitoring sensor. S41. The system of claim 39, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to said substantially erratic driving signal determined through data from at least one pedal monitoring sensor.
42. The system of claim 24, wherein said plurality of internal vehicle speed signal generators is adapted to generate at least one of said second plurality of speed limiting signals in response to data from a vehicle transponder system. 14
43. The system of claim 24, wherein said plurality of internal vehicle speed signal enerators is adanrted to generate at least one of said second plurality of speed limiting signals in response to data from at least one vehicle remote sensor.
44. A vehicle speed control system substantially as herein described with reference to the accompanying drawings. A method for limiting a vehicle speed substantially as herein described with reference to the accompanying drawings. DATED this 15 th day of April 2005 WATERMARK PATENT TRADE MARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRALIA P20953AU00 S 0 S o S girD* **l
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU15544/02A AU781954B2 (en) | 2002-02-11 | 2002-02-11 | Vehicle speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU15544/02A AU781954B2 (en) | 2002-02-11 | 2002-02-11 | Vehicle speed control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1554402A AU1554402A (en) | 2003-08-14 |
| AU781954B2 true AU781954B2 (en) | 2005-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU15544/02A Ceased AU781954B2 (en) | 2002-02-11 | 2002-02-11 | Vehicle speed control system |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU781954B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5979582A (en) * | 1995-06-07 | 1999-11-09 | Ab Volvo | Cruise control for motor vehicles |
| US6128570A (en) * | 1998-08-03 | 2000-10-03 | Lucent Technologies Inc. | Windowed control system |
| US6167341A (en) * | 1992-02-08 | 2000-12-26 | Agco S.A. | Vehicle road speed control system |
-
2002
- 2002-02-11 AU AU15544/02A patent/AU781954B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167341A (en) * | 1992-02-08 | 2000-12-26 | Agco S.A. | Vehicle road speed control system |
| US5979582A (en) * | 1995-06-07 | 1999-11-09 | Ab Volvo | Cruise control for motor vehicles |
| US6128570A (en) * | 1998-08-03 | 2000-10-03 | Lucent Technologies Inc. | Windowed control system |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1554402A (en) | 2003-08-14 |
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| Date | Code | Title | Description |
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| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |