WO2006138749A1 - Method and system for speed measurement - Google Patents
Method and system for speed measurement Download PDFInfo
- Publication number
- WO2006138749A1 WO2006138749A1 PCT/ZA2006/000082 ZA2006000082W WO2006138749A1 WO 2006138749 A1 WO2006138749 A1 WO 2006138749A1 ZA 2006000082 W ZA2006000082 W ZA 2006000082W WO 2006138749 A1 WO2006138749 A1 WO 2006138749A1
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- Prior art keywords
- vehicle
- specific point
- speed
- time
- measuring
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
Definitions
- This invention relates to a method and associated system for speed measurement.
- Gatsometer or similar device are only able to identify a speeding motorist if such a motorist is speeding where the measuring equipment is located.
- a further problem associated herewith is that the speeding motorists are sometimes able to see the measuring equipment from a distance and reduce speed, or that other motorists warn oncoming vehicles of speed traps. This invention seeks to propose a possible solution to these problems.
- a system for speed measurement which system includes a first speed measurement device for measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; a second speed measurement device for measuring a second instantaneous speed of the vehicle when said vehicle passes a second specific point which is separated from the first point by a predetermined distance; and a processor arranged in communication with the first and second speed measurement devices which processor is configured to register a first moment in time when said vehicle passes the first specific point, and to register a second moment in time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
- first and/or second instantaneous speed measurements are/is usable to verify the calculated average speed, and the calculated average speed is usable to verify the different measured speeds.
- the measured speeds are further usable to verify each other.
- the processor may further be configured to calculate the average speed of the vehicle.
- the speed measurement device may include radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like.
- the processor may be configured to register a moment in time by including identifying equipment for uniquely identifying the vehicle when said vehicle passes the specific point, so that the processor is able to register a unique identity of the vehicle together with a time when the vehicle was identified.
- the identifying equipment may include licence plate recognition equipment.
- the identifying equipment may include a receiver configured for receiving an identifier signal transmitted by the vehicle proximate the specific point, e.g. an RFID signal, or the like.
- the predetermined distance between the first and second points is typically a few kilometers.
- the processor may include timing circuitry for accurately calculating the average speed of the vehicle over the predetermined distance.
- the processor may include two subsidiary processing modules located at the respective specific points with each module including independent timing circuitry.
- the processing modules may be arranged in communication with each other to enable synchronizing the respective timing circuitry, e.g. a master clock signal, a GPS time signal, a radio signal, and/or the like.
- a method for speed measurement which method includes the following steps: measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; registering a first moment in time when said vehicle passes the first specific point; measuring a second instantaneous speed of the vehicle when the vehicle passes a second specific point which is separated from the first point by a predetermined distance; and registering a second moment in time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
- first and/or second instantaneous speed measurements are/is usable to verify the calculated average speed, and the calculated average speed is usable to verify the different measured speeds.
- the measured speeds are further usable to verify each other.
- the method may include the further step of calculating the average speed of the vehicle.
- the step of measuring instantaneous speed may be conducted by means of radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like.
- the step of registering a moment in time may include uniquely identifying the vehicle when said vehicle passes the specific point and registering such identity together with a time when the vehicle was identified.
- the vehicle may be uniquely identified by means of licence plate recognition techniques.
- the vehicle may be uniquely identified by said vehicle transmitting an identifier signal which a suitable stationary receiver is configured to receive proximate the specific point, e.g. an RFID signal, or the like.
- the predetermined distance between the first and second points is typically a few kilometers.
- the method may include the step of relaying the first registered moment in time to the second specific point so that the average speed of the vehicle is able to be calculated at the second specific point. It is to be appreciated that some manner of time synchronisation typically exists between the first and second points.
- Figure 1 shows, in diagrammatic view, a method for speed measurement, in accordance with the invention.
- Figure 2 shows, in perspective view, a system for speed measurement, in accordance with the invention.
- a method for speed measurement in accordance with the invention, is generally indicated by reference numeral 10, and the associated system for speed measurement, in accordance with the invention, is generally indicated by reference numeral 20.
- the method 10 for speed measurement generally includes the steps of measuring 12 a first instantaneous speed and registering 14 a first moment in time, and measuring 16 a second instantaneous speed and registering 18 a corresponding second moment in time.
- the step of measuring 12 a first instantaneous speed of a vehicle is done when said vehicle passes a first specific point on a road.
- the step of registering 14 a first moment in time is done when said vehicle passes the first specific point on the road. It is to be appreciated that the steps 12 and 14 are typically done simultaneously.
- the steps of measuring 16 a second instantaneous speed of the vehicle when the vehicle passes the second specific point which is separated from the first point by a predetermined distance, and registering 18 the second moment in time when said vehicle passes the second specific point, is typically done concurrently.
- V ⁇ - ⁇ t
- V average speed [metres/second]
- S change in distance [metres]
- the method typically includes the further step of calculating the average speed of the vehicle.
- the step of measuring the instantaneous speed is typically conducted by means of radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like. It is to be appreciated that any form of instantaneous speed measurement is acceptable.
- the step of registering 14 and 18, respectively, a moment in time may include uniquely identifying the vehicle when said vehicle passes the specific point and registering such identifier together with a time when the vehicle was identified. Accordingly, in further embodiments of the invention, the vehicle is uniquely identified by means of licence plate recognition equipment. Otherwise, the vehicle is uniquely identified by said vehicle transmitting an identifier signal which a suitable stationary receiver receives proximate the specific point, e.g. an RFID signal, or the like.
- licence plate recognition equipment when the vehicle passes the first specific point, uniquely identifies the vehicle according to its unique licence plate number.
- the moment when the vehicle passes that specific point is recorded.
- the unique identity and recorded moment is then relayed to the second specific point or stored in a central location accessible from the second point.
- licence plate recognition identifies the vehicle and the moment when the vehicle passes the second point is recorded.
- the licence plate can then be matched to the first identification which also includes the first time, which enables the average speed of the vehicle to be calculated over the predetermined distance.
- the predetermined distance between the first and second points is typically a few kilometers, e.g. on a highway, or the like.
- the method 10 includes the step of relaying the first registered moment in time to the second specific point so that the average speed of the vehicle is able to be calculated at the second point. It is to be appreciated that some manner of time synchronisation exists between the first and second points.
- the system 20 associated with the method 10 generally includes a first and second speed measurement device 22 and 24, respectively, and a processor 28.
- the first speed measurement device 22 is for measuring a first instantaneous speed of a vehicle 26 when said vehicle 26 passes a first specific point.
- the second speed measurement device 24 is for measuring a second instantaneous speed of the vehicle 26 when the vehicle 26 passes a second specific point which is separated from the first point by a predetermined distance D, as shown.
- the processor 28 is arranged in communication with the first and second speed measurement devices 22 and 24 with the processor 28 being configured to register a first moment in time when said vehicle 26 passes the first specific point, and to register a second moment in time when said vehicle 26 passes the second specific point.
- the system 20 can measure the instantaneous speed of the vehicle 26 at the first and second specific points (located proximate devices 22 and 24), and the system 20 is able to calculate the average speed of the vehicle 26 over the distance D.
- the speed measurement devices 22 and 24 typically includes radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like. It is to be appreciated that any type of instantaneous speed measurement equipment can be used.
- the processor 28 is configured to register a moment in time by including identifying equipment (not shown) for uniquely identifying the vehicle 26 when said vehicle 26 passes the specific point. In this manner, the processor 28 is able to register the unique identifier together with a time when the vehicle 26 was identified.
- the identifying equipment may include licence plate recognition equipment, a receiver for receiving an identifier signal transmitted by the vehicle 26, e.g. an RFID signal, or the like.
- the predetermined distance D between the first and second points is typically a few kilometers.
- the processor 28 generally includes timing circuitry for accurately calculating the average speed of the vehicle 26 over the predetermined distance D, as a lack of synchronisation in time from the first point to the second point will result in an error.
- the processor 28 includes two subsidiary modules located at the respective specific points with each module including independent timing circuitry.
- the modules are then typically arranged in communication with each other to enable synchronizing the respective timing circuitry, e.g. a master clock signal, a GPS time signal, a radio signal, and/or the like.
- the processor 18 also calculates the average speed. Accordingly, the calculation of the average speed of the vehicle is governed by the following equation:
- V average speed [metres/second]
- the speed measuring devices 22 and 24 are set up a predetermined distance D apart.
- the instantaneous speed of the vehicle 26 is measured and recorded.
- the vehicle 26 is uniquely identified and the moment in time is registered when the vehicle is at point 22.
- the average speed of the vehicle 26 can be calculated, in addition to having two instantaneous speed values. It is to be appreciated that the average speed of the vehicle can be calculated as the distance D is known, and the time taken for the vehicle 26 to travel the distance is measured.
- the measuring devices 22 and 24 may be set up at toll booths, at bridge overhangs, and/or the like.
- the invention provides a way for measuring the speed of a vehicle which measuring finds particular application in the field of traffic offence monitoring.
- the Inventor regards it as a further advantage that the invention provides a way whereby a speeding motorist may be identified even when not speeding at visible speed measurement equipment.
- the invention provides a double verification of the speed measurement, as accurate measurements with verification is still possible should one of the measurements be adversely affected.
- the Inventor regards it as a yet further advantage that the different speeds measured or calculated are usable to verify each other.
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Abstract
A speed measurement system (20) which includes first and second speed measurement devices (22 and 24) for measuring a first and second instantaneous speed of a vehicle (26) at first and second specific points separated by a predetermined distance D, and a processor (28) arranged in communication with the first and second speed measurement devices (22) and (24), said processor (28) being configured to register a first moment in time when said vehicle (26) passes the first specific point, and to register a second moment in time when said vehicle (26) passes the second specific point, so that an average speed of the vehicle (26) is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
Description
METHOD AND SYSTEM FOR SPEED MEASUREMENT
FIELD OF THE INVENTION
This invention relates to a method and associated system for speed measurement.
BACKGROUND TO THE INVENTION
Speeding motorists present an increasing problem on motorways, often causing accidents which result in serious injury, damage to property, or even death.
Several methods are known for identifying speeding motorists, but these methods have inherent shortcomings.
Instantaneous speed measurements, typically accomplished with a
Gatsometer or similar device, are only able to identify a speeding motorist if such a motorist is speeding where the measuring equipment is located. A further problem associated herewith is that the speeding motorists are sometimes able to see the measuring equipment from a distance and reduce speed, or that other motorists warn oncoming vehicles of speed traps. This invention seeks to propose a possible solution to these problems.
SUMMARY OF THE INVENTION
According to a first aspect of the invention there is provided a system for speed measurement which system includes a first speed measurement device for measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; a second speed measurement device for measuring a second instantaneous speed of the vehicle when said vehicle passes a second specific point which is separated from the first point by a predetermined distance; and a processor arranged in communication with the first and second speed measurement devices which processor is configured to register a first moment in time when said vehicle passes the first specific point, and to register a second moment in
time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
It is to be appreciated that the first and/or second instantaneous speed measurements are/is usable to verify the calculated average speed, and the calculated average speed is usable to verify the different measured speeds. In addition, the measured speeds are further usable to verify each other.
The processor may further be configured to calculate the average speed of the vehicle.
The speed measurement device may include radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like.
The processor may be configured to register a moment in time by including identifying equipment for uniquely identifying the vehicle when said vehicle passes the specific point, so that the processor is able to register a unique identity of the vehicle together with a time when the vehicle was identified.
Accordingly the identifying equipment may include licence plate recognition equipment. The identifying equipment may include a receiver configured for receiving an identifier signal transmitted by the vehicle proximate the specific point, e.g. an RFID signal, or the like.
It is to be appreciated that the predetermined distance between the first and second points is typically a few kilometers.
The processor may include timing circuitry for accurately calculating the average speed of the vehicle over the predetermined distance.
The processor may include two subsidiary processing modules located at the respective specific points with each module including independent timing circuitry. In addition, the processing modules may be arranged in communication with each other
to enable synchronizing the respective timing circuitry, e.g. a master clock signal, a GPS time signal, a radio signal, and/or the like.
According to a second aspect of the invention there is provided a method for speed measurement which method includes the following steps: measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; registering a first moment in time when said vehicle passes the first specific point; measuring a second instantaneous speed of the vehicle when the vehicle passes a second specific point which is separated from the first point by a predetermined distance; and registering a second moment in time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
It is to be appreciated that the first and/or second instantaneous speed measurements are/is usable to verify the calculated average speed, and the calculated average speed is usable to verify the different measured speeds. In addition, the measured speeds are further usable to verify each other.
The method may include the further step of calculating the average speed of the vehicle.
The step of measuring instantaneous speed may be conducted by means of radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like.
The step of registering a moment in time may include uniquely identifying the vehicle when said vehicle passes the specific point and registering such identity together with a time when the vehicle was identified. As such, the vehicle may be uniquely identified by means of licence plate recognition techniques. The vehicle may be uniquely identified by said vehicle transmitting an identifier signal which a suitable
stationary receiver is configured to receive proximate the specific point, e.g. an RFID signal, or the like.
It is to be appreciated that the predetermined distance between the first and second points is typically a few kilometers.
The method may include the step of relaying the first registered moment in time to the second specific point so that the average speed of the vehicle is able to be calculated at the second specific point. It is to be appreciated that some manner of time synchronisation typically exists between the first and second points.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is now described, by way of non-limiting example, with reference to the accompanying drawings wherein
Figure 1 shows, in diagrammatic view, a method for speed measurement, in accordance with the invention; and
Figure 2 shows, in perspective view, a system for speed measurement, in accordance with the invention.
DETAILED DESCRIPTION OF THE INVENTION
With reference to the accompanying drawings, a method for speed measurement, in accordance with the invention, is generally indicated by reference numeral 10, and the associated system for speed measurement, in accordance with the invention, is generally indicated by reference numeral 20.
The method 10 for speed measurement generally includes the steps of measuring 12 a first instantaneous speed and registering 14 a first moment in time, and measuring 16 a second instantaneous speed and registering 18 a corresponding second moment in time.
The step of measuring 12 a first instantaneous speed of a vehicle is done when said vehicle passes a first specific point on a road. In addition, the step of registering 14 a first moment in time is done when said vehicle passes the first specific
point on the road. It is to be appreciated that the steps 12 and 14 are typically done simultaneously.
Accordingly, the steps of measuring 16 a second instantaneous speed of the vehicle when the vehicle passes the second specific point which is separated from the first point by a predetermined distance, and registering 18 the second moment in time when said vehicle passes the second specific point, is typically done concurrently.
It is to be appreciated that these registrations 14 and 18, respectively, of moments in time enable the average speed of the vehicle to be calculated between the two points, whilst the instantaneous measurements 12 and 16, respectively, of the vehicle's speed provides a speed measurement for the vehicle at the precise moments when said vehicle passes the specific points.
The calculation of the average speed of the vehicle is governed by the following equation:
V = ^- Δt where:
V = average speed [metres/second] ΔS = change in distance [metres]
Δt = change in time [seconds]
The method typically includes the further step of calculating the average speed of the vehicle.
It is to be appreciated that the step of measuring the instantaneous speed is typically conducted by means of radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like. It is to be appreciated that any form of instantaneous speed measurement is acceptable.
The step of registering 14 and 18, respectively, a moment in time may include uniquely identifying the vehicle when said vehicle passes the specific point and registering such identifier together with a time when the vehicle was identified.
Accordingly, in further embodiments of the invention, the vehicle is uniquely identified by means of licence plate recognition equipment. Otherwise, the vehicle is uniquely identified by said vehicle transmitting an identifier signal which a suitable stationary receiver receives proximate the specific point, e.g. an RFID signal, or the like.
For example, in one embodiment of the invention, when the vehicle passes the first specific point, licence plate recognition equipment uniquely identifies the vehicle according to its unique licence plate number. In addition, the moment when the vehicle passes that specific point, is recorded. The unique identity and recorded moment is then relayed to the second specific point or stored in a central location accessible from the second point.
As such, when the same vehicle later passes the second point, similar licence plate recognition identifies the vehicle and the moment when the vehicle passes the second point is recorded. The licence plate can then be matched to the first identification which also includes the first time, which enables the average speed of the vehicle to be calculated over the predetermined distance.
It is to be appreciated that the predetermined distance between the first and second points is typically a few kilometers, e.g. on a highway, or the like.
In a further embodiment of the invention, the method 10 includes the step of relaying the first registered moment in time to the second specific point so that the average speed of the vehicle is able to be calculated at the second point. It is to be appreciated that some manner of time synchronisation exists between the first and second points.
The system 20 associated with the method 10 generally includes a first and second speed measurement device 22 and 24, respectively, and a processor 28.
The first speed measurement device 22 is for measuring a first instantaneous speed of a vehicle 26 when said vehicle 26 passes a first specific point.
Similarly, the second speed measurement device 24 is for measuring a second instantaneous speed of the vehicle 26 when the vehicle 26 passes a second
specific point which is separated from the first point by a predetermined distance D, as shown.
The processor 28 is arranged in communication with the first and second speed measurement devices 22 and 24 with the processor 28 being configured to register a first moment in time when said vehicle 26 passes the first specific point, and to register a second moment in time when said vehicle 26 passes the second specific point.
In this manner, the system 20 can measure the instantaneous speed of the vehicle 26 at the first and second specific points (located proximate devices 22 and 24), and the system 20 is able to calculate the average speed of the vehicle 26 over the distance D.
The speed measurement devices 22 and 24 typically includes radar measuring equipment, laser measuring equipment, road pressure sensors with associated measuring equipment, and/or the like. It is to be appreciated that any type of instantaneous speed measurement equipment can be used.
In one embodiment of the invention, the processor 28 is configured to register a moment in time by including identifying equipment (not shown) for uniquely identifying the vehicle 26 when said vehicle 26 passes the specific point. In this manner, the processor 28 is able to register the unique identifier together with a time when the vehicle 26 was identified.
For example, the identifying equipment may include licence plate recognition equipment, a receiver for receiving an identifier signal transmitted by the vehicle 26, e.g. an RFID signal, or the like.
It is to be appreciated that, in a preferred embodiment, the predetermined distance D between the first and second points is typically a few kilometers.
The processor 28 generally includes timing circuitry for accurately calculating the average speed of the vehicle 26 over the predetermined distance D, as a
lack of synchronisation in time from the first point to the second point will result in an error.
In a further embodiment, the processor 28 includes two subsidiary modules located at the respective specific points with each module including independent timing circuitry. The modules are then typically arranged in communication with each other to enable synchronizing the respective timing circuitry, e.g. a master clock signal, a GPS time signal, a radio signal, and/or the like.
It is to be appreciated that, in a preferred embodiment of the invention, the processor 18 also calculates the average speed. Accordingly, the calculation of the average speed of the vehicle is governed by the following equation:
V = ^
Δt where: V = average speed [metres/second]
ΔS = change in distance [metres] Δt = change in time [seconds]
In use, the speed measuring devices 22 and 24 are set up a predetermined distance D apart. When the vehicle 26 passes the first device 22, as shown at the top of Figure 2, the instantaneous speed of the vehicle 26 is measured and recorded. In addition, the vehicle 26 is uniquely identified and the moment in time is registered when the vehicle is at point 22.
As the vehicle 26 proceeds along the road, as shown in the middle of
Figure 2, time elapses. When the vehicle 26 reaches the second specific point, as shown at the bottom of Figure 2, the instantaneous speed is again measured when the vehicle 26 passes the second device 24. In addition, the second device 24 then registers the moment in time when the vehicle passes the second device 24.
As the vehicle 26 can be uniquely identified along with the moments in time said vehicle 26 was at the respective points, the average speed of the vehicle 26 can be calculated, in addition to having two instantaneous speed values. It is to be
appreciated that the average speed of the vehicle can be calculated as the distance D is known, and the time taken for the vehicle 26 to travel the distance is measured.
It is to be appreciated that the measuring devices 22 and 24 may be set up at toll booths, at bridge overhangs, and/or the like.
It shall be understood that the examples are provided for illustrating the invention further and to assist a person skilled in the art with understanding the invention and is not meant to be construed as unduly limiting the reasonable scope of the invention.
The Inventor regards it as an advantage that the invention provides a way for measuring the speed of a vehicle which measuring finds particular application in the field of traffic offence monitoring. The Inventor regards it as a further advantage that the invention provides a way whereby a speeding motorist may be identified even when not speeding at visible speed measurement equipment.
The Inventor regards it as a further advantage that the invention provides a double verification of the speed measurement, as accurate measurements with verification is still possible should one of the measurements be adversely affected. In addition, the Inventor regards it as a yet further advantage that the different speeds measured or calculated are usable to verify each other.
Claims
1. A system for speed measurement which system includes a first speed measurement device for measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; a second speed measurement device for measuring a second instantaneous speed of the vehicle when said vehicle passes a second specific point which is separated from the first point by a predetermined distance; and a processor arranged in communication with the first and second speed measurement devices which processor is configured to register a first moment in time when said vehicle passes the first specific point, and to register a second moment in time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
2. A system as claimed in claim 1 , wherein the processor is configured to calculate the average speed of the vehicle.
3. A system as claimed in either one of claims 1 or 2, wherein the speed measurement device includes radar measuring equipment.
4. A system as claimed in either one of claims 1 or 2, wherein the speed measurement device includes laser measuring equipment.
5. A system as claimed in either one of claims 1 or 2, wherein the speed measurement device includes road pressure sensors with associated measuring equipment.
6. A system as claimed in any one of claims 1 to 5, wherein the processor is configured to register a moment in time by including identifying equipment for uniquely identifying the vehicle when said vehicle passes the specific point, so that the processor is able to register a unique identity of the vehicle together with a time when the vehicle was identified.
7. A system as claimed in claim 6, wherein the identifying equipment includes licence plate recognition equipment.
8. A system as claimed in claim 6, wherein the identifying equipment includes a receiver configured for receiving an identifier signal transmitted by the vehicle proximate the specific point.
9. A system as claimed in any one of claims 1 to 8, wherein the processor includes timing circuitry for accurately calculating the average speed of the vehicle over the predetermined distance.
10. A system as claimed in any one of claims 1 to 9, wherein the processor includes two subsidiary processing modules separately located at the respective specific points with each module including independent timing circuitry arranged in communication with each other to enable synchronization of the respective timing circuitry.
11. A method for speed measurement which method includes the following steps: measuring a first instantaneous speed of a vehicle when said vehicle passes a first specific point; registering a first moment in time when said vehicle passes the first specific point; measuring a second instantaneous speed of the vehicle when the vehicle passes a second specific point which is separated from the first point by a predetermined distance; and registering a second moment in time when said vehicle passes the second specific point, so that an average speed of the vehicle is able to be calculated over the predetermined distance, wherein the different speeds are usable for verifying each other.
12. A method as claimed in claim 11 , which includes the further step of calculating the average speed of the vehicle.
13. A method as claimed in either one of claims 11 or 12, wherein the step of measuring instantaneous speed is conducted by means of radar measuring equipment.
14. A method as claimed in either one of claims 11 or 12, wherein the step of measuring instantaneous speed is conducted by means of laser measuring equipment.
15. A method as claimed in either one of claims 11 or 12, wherein the step of measuring instantaneous speed is conducted by means of road pressure sensors with associated measuring equipment.
16. A method as claimed in any one of claims 11 to 15, wherein the step of registering a moment in time includes uniquely identifying the vehicle when said vehicle passes the specific point and registering such identity together with a time when the vehicle was identified.
17. A method as claimed in claim 16, wherein the vehicle is uniquely identified by means of licence plate recognition techniques.
18. A method as claimed in claim 16, wherein the vehicle is uniquely identified by said vehicle transmitting an identifier signal which a suitable stationary receiver is configured to receive proximate the specific point.
19. A method as claimed in any one of claims 11 to 18, which includes the step of relaying the first registered moment in time to the second specific point so that the average speed of the vehicle is able to be calculated at the second specific point.
20. A system or a method, as claimed in claim 1 or 11 , respectively, substantially as herein described and illustrated.
21. A new system or a new method substantially as herein described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA2005/5049 | 2005-06-22 | ||
| ZA200505049 | 2005-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006138749A1 true WO2006138749A1 (en) | 2006-12-28 |
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ID=37076270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ZA2006/000082 Ceased WO2006138749A1 (en) | 2005-06-22 | 2006-06-21 | Method and system for speed measurement |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2006138749A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010029502A1 (en) * | 2008-09-09 | 2010-03-18 | Abraham Gert Willem Du Plooy | A radio frequency system |
| CN104504911A (en) * | 2013-12-25 | 2015-04-08 | 安徽宝龙环保科技有限公司 | Motor vehicle speed measuring device and speed measuring method |
| RU2593442C1 (en) * | 2015-06-03 | 2016-08-10 | Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ") | Method of measuring speed of object |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001035372A1 (en) * | 1999-11-09 | 2001-05-17 | C.R.A.F.T. S.R.L. | System for surveillance of vehicular traffic on roads and highways |
| WO2002082400A2 (en) * | 2001-04-04 | 2002-10-17 | Persio Walter Bortolotto | A system and a method for event detection and storage |
| GB2377027A (en) * | 2002-01-18 | 2002-12-31 | Golden River Traffic Ltd | Assessing the accuracy of roadside traffic measurement systems |
| BE1014680A6 (en) * | 2002-03-05 | 2004-03-02 | Lange Philippe | Method for monitoring the average speed of individual vehicles and traffic flows, comprises capture, storing and processing of video or photographic data taken at specific points along a route |
-
2006
- 2006-06-21 WO PCT/ZA2006/000082 patent/WO2006138749A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001035372A1 (en) * | 1999-11-09 | 2001-05-17 | C.R.A.F.T. S.R.L. | System for surveillance of vehicular traffic on roads and highways |
| WO2002082400A2 (en) * | 2001-04-04 | 2002-10-17 | Persio Walter Bortolotto | A system and a method for event detection and storage |
| GB2377027A (en) * | 2002-01-18 | 2002-12-31 | Golden River Traffic Ltd | Assessing the accuracy of roadside traffic measurement systems |
| BE1014680A6 (en) * | 2002-03-05 | 2004-03-02 | Lange Philippe | Method for monitoring the average speed of individual vehicles and traffic flows, comprises capture, storing and processing of video or photographic data taken at specific points along a route |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010029502A1 (en) * | 2008-09-09 | 2010-03-18 | Abraham Gert Willem Du Plooy | A radio frequency system |
| CN104504911A (en) * | 2013-12-25 | 2015-04-08 | 安徽宝龙环保科技有限公司 | Motor vehicle speed measuring device and speed measuring method |
| RU2593442C1 (en) * | 2015-06-03 | 2016-08-10 | Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ") | Method of measuring speed of object |
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