GB2417593A - Road vehicle sensor using pre fabricated inductive loops located in a single slot in the road surface. - Google Patents
Road vehicle sensor using pre fabricated inductive loops located in a single slot in the road surface. Download PDFInfo
- Publication number
- GB2417593A GB2417593A GB0418761A GB0418761A GB2417593A GB 2417593 A GB2417593 A GB 2417593A GB 0418761 A GB0418761 A GB 0418761A GB 0418761 A GB0418761 A GB 0418761A GB 2417593 A GB2417593 A GB 2417593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensor
- road surface
- road
- slot
- lane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
Abstract
A vehicle sensor pre-fabricated and tested in factory before being installed in a road surface. It consists of electrically inductive coils with known, tried and tested characteristics for the sensing of road traffic vehicles of various categories. When connected to appropriate electronic equipment, the sensor assembly detects the presence of a vehicle, whether moving over the sensor or in a stationary position. Each sensor has shape and dimensions which enable it to be fitted into a single slot cut in a road surface. When used in a carriageway with more than one lane, then the slot is cut across all lanes with a sensor assembly fitted into each lane throughout the slot. The sensor assemblies are pre-formed in a range of dimensions allowing installation in roads and lanes with standard and non-standard widths.
Description
24 1 7593 Road Vehicle Sensor This invention relates to a road vehicle
sensing device for Me purpose of sensing the presence of a passing road vehicle, more particularly to a prefabricated sensor arrangement specifically profaned for installation into a single slot in Me road surface.
Electrically inductive loops Conned from electrically insulated wire are currently used as the means by which roll traffic is detected, counted and their speeds identified. The detected presence and speed of vehicles on a road are also used to set traffic waming signals and signs on Eat road or adjoining roads. Such electrically inductive loops are fanned in situ on the road surface. Slots are cut into the road surface, folTning rectangles and cable channels. Electrical cable is laid into the rectangle slots to form electrically inductive loops, and Me ends of the electrical cable run in Me channels to a jointing box, at the edge of die road, in which the inductive cables are joined to Feeder cables. TO feeder cables connect the inductive loop sensors to electronic control equipment.
TO slots containing the electrically inductive loops can span an area of up to eight square metros. Such slots can require Me closure of a road. This cutting process can cause a significant T.c:nt oftT:ffic Delano Ed can be costly The slot-cuttinp is followed by the laying of cables iron the slats.
The vehicle sensor is pee fabricated and tested in a factory before being installed in a road surface. It consists of electrically inductive coil or coils with known, tried and tested chalactcristics for the sensing of road traffic vehicles of various categories. The method of sensing uses electromagnetic inductance, in which the electromagnetic properties of the inductor are altered when a road vehicle passes over it. When connected to appropriate electronic equipment, the sensor assembly detects the presence of a vehicle - whether moving over lilt: sensor or in a stationary position over the sensor.
Each sensor is a single pre fabricated assembly having a shape and dirriensions which enable it to be fitted into a single slot cut in a road surfirce A single-lane sensor assembly is pre-forrned to fit across a single lane and to occupy a single slot cut into the road sumacs. A multi-lane sensor assembly is pro formed to fit across two or more lanes and to occupy a single slot cut into the road surface.
When Me single-lane assemblies are used in a carriageway with more than one lanes then a single slot is cut across all lanes with a sensor assembly fitted into each lane throughout the slot.
The pre-fomed sensor assemblies either have standard dimensions suitable for most roads or roll lanes, or they are designed to fit specific road or lane widths.
Once fitted into the slot, Me sensor assembly is covered with protective materials suitable to act as part of the permanent road wearing course to be driven over by road ha$ic.
The sensor is also suitable for use with equipment which can deduce the speed of each passing vehicle and with equipment which can deduce the length of each passing vehicle.
Each loop or pair of loops in a lone currently requires a feeder cable to connect the loop or loops to the electronic control equipment. For example, if a Imp is installed in one lane of 8 road, then one feeder cable is required. If a loop is installed in each of two lanes of a road, then two feeder cables are required, and so on. Loops in the same lane, but at different locations, require their own ibeder cables. More lanes mean more feeder cables, each routed back, as individual circuits, to the control equipment.
The present invention has means by which a single feeder cable would be used to connect multiple sensors to the control equipmcut. A feeder cable extends *om Me control equipment and terminates at Me fiat sensor. The sane Coder circuit extends Mom the first sensor and terminates at the second sensor. Else same feeder circuit extends from Tic second sensor, and so on to the final sensor on Me feeder circuit.
U.c p._s.nt:n;entios allows Ceder cable leng0:s in excess of bong moms. r, :rrent!v, .der cable ledges are limited to a naximn of 200 metros.
Claims (4)
1. A pre-fabricated electrically inductive vehicle sensing assembly consisting of an elongated coil of electrical wire which is completely inserted into a single elongated slot-cut channel in the road surface and which spans a single lane; pre-determined inductance characteristics; one or more coils of electrical wire inserted into a single elongated slotcut channel in the road surface.
2. A coil of electrical wire as claimed in claim I which spans the width of two or more lanes throughout the length of the single slot-cut channel which is cut across more than one lane.
3. A coil of electrical wire as claimed in claim 1 in which the sensor is also suitable for use with electronic equipment which can deduce the speed of each passing vehicle and with equipment which can deduce the length of each passing vehicle.
4. A coil of electrical wire as claimed in claims I and 3 in which: the present invention has a means by which a single feeder cable would be used to connect more than one sensor to the electronic equipment; a feeder cable extends from the control equipment and terminates at the first sensor; the same feeder circuit extends from the first sensor and terminates at the second sensor; the same feeder circuit extends from the second sensor, and so on to the final sensor on the feeder circuit; feeder cable lengths are in excess of 2000 metros.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0418761A GB2417593A (en) | 2004-08-23 | 2004-08-23 | Road vehicle sensor using pre fabricated inductive loops located in a single slot in the road surface. |
| GB0517235A GB2418515C (en) | 2004-08-23 | 2005-08-24 | Road vehicle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0418761A GB2417593A (en) | 2004-08-23 | 2004-08-23 | Road vehicle sensor using pre fabricated inductive loops located in a single slot in the road surface. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0418761D0 GB0418761D0 (en) | 2004-09-22 |
| GB2417593A true GB2417593A (en) | 2006-03-01 |
Family
ID=33042491
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0418761A Withdrawn GB2417593A (en) | 2004-08-23 | 2004-08-23 | Road vehicle sensor using pre fabricated inductive loops located in a single slot in the road surface. |
| GB0517235A Expired - Fee Related GB2418515C (en) | 2004-08-23 | 2005-08-24 | Road vehicle sensor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0517235A Expired - Fee Related GB2418515C (en) | 2004-08-23 | 2005-08-24 | Road vehicle sensor |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB2417593A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528896A (en) * | 2016-01-15 | 2016-04-27 | 辽宁金洋集团信息技术有限公司 | Flexible surface-mounted-type magnetic induction sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775742A (en) * | 1972-09-18 | 1973-11-27 | Canoga Controls Corp | Vehicle detection system |
| WO1995028693A1 (en) * | 1994-04-19 | 1995-10-26 | Honeywell Inc. | Magnetometer vehicle detector |
| WO2000049590A1 (en) * | 1999-02-18 | 2000-08-24 | The University Court Of The University Of Edinburgh | Vehicle detector and classifier |
| US6342845B1 (en) * | 1996-12-03 | 2002-01-29 | Inductive Signature Technologies | Automotive vehicle classification and identification by inductive signature |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2437797C3 (en) * | 1974-08-06 | 1979-04-26 | Elmeg-Elektro-Mechanik Gmbh, 3150 Peine | Arrangement for counting vehicles |
| EP0049949B1 (en) * | 1980-10-15 | 1985-12-18 | Minnesota Mining And Manufacturing Company | Apparatus for detecting a ferromagnetic material |
-
2004
- 2004-08-23 GB GB0418761A patent/GB2417593A/en not_active Withdrawn
-
2005
- 2005-08-24 GB GB0517235A patent/GB2418515C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775742A (en) * | 1972-09-18 | 1973-11-27 | Canoga Controls Corp | Vehicle detection system |
| WO1995028693A1 (en) * | 1994-04-19 | 1995-10-26 | Honeywell Inc. | Magnetometer vehicle detector |
| US6342845B1 (en) * | 1996-12-03 | 2002-01-29 | Inductive Signature Technologies | Automotive vehicle classification and identification by inductive signature |
| WO2000049590A1 (en) * | 1999-02-18 | 2000-08-24 | The University Court Of The University Of Edinburgh | Vehicle detector and classifier |
Non-Patent Citations (1)
| Title |
|---|
| Patented Vehicle Detection Sensor "Features Easiest Installation - Saving time and Money" - Retrieved from www.baneng.com/whats_new/release.php?id-75 Copyright 10th September 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0418761D0 (en) | 2004-09-22 |
| GB0517235D0 (en) | 2005-09-28 |
| GB2418515C (en) | 2007-09-13 |
| GB2418515B (en) | 2007-09-05 |
| GB2418515A (en) | 2006-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |