GB2431272A - Inductive sensor connection assembly - Google Patents
Inductive sensor connection assembly Download PDFInfo
- Publication number
- GB2431272A GB2431272A GB0616649A GB0616649A GB2431272A GB 2431272 A GB2431272 A GB 2431272A GB 0616649 A GB0616649 A GB 0616649A GB 0616649 A GB0616649 A GB 0616649A GB 2431272 A GB2431272 A GB 2431272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feeder
- connection means
- power supply
- cable
- data
- 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.)
- Granted
Links
- 230000001939 inductive effect Effects 0.000 title claims abstract 3
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 238000013500 data storage Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
-
- 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 connection system for inductive sensors comprises a controller 1, a feeder cable 2, and connection nodes 3. The controller 1 is connected by a feeder cable 2 to a first connection node 3. The cable 2 may be an electrical or an optical cable. The controller 1 is connected to one end of the feeder cable and is located either at the roadside or in a building. The connection node is connected to at least one controller via a feeder cable. Additional connections can be made to other connection nodes such that two way communications between them can occur. Each connection node is uniquely addressable. Sensors 5 are linked to each connection node although the connection node can operate as a repeater. Internally, the connection node comprises control 6, 7 and data circuits 8, 9 amplifiers 12 and 14, a control unit 13, data storage means 15 and a powers supply unit 11. Power for the connection node may be provided internally, externally or over the data lines. Preferably, the sensors are narrow loop sensors or sensor blades installed in a single saw cut or slot within the road surface.
Description
1 2431272 Unlimited Feeder System This invention relates to a
transportation vehicle sensing device for the purpose of detecting the presence of a vehicle, more particularly to a prefabricated sensor arrangement specifically preformed for installation into a single slot in the infrastructure surface below, or otherwise adjacent to, the vehicle. It relates to two previously published UK patent applications, namely numbers GB 2 417 593A and GB 2 418 515A. The narrow detection loops in those specifications will require a feeder cable for connection to control equipment.
At a given location, each loop or pair of loops in a lane would require a feeder cable to connect the loop or loops to the electronic control equipment. For example, if a loop is installed in one lane of a 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 feeder cables. More lanes mean more feeder cables, each routed back, as individual circuits, to the control equipment.
In general, at each location where detection loops are installed, a set of feeder cables are individually routed back to control equipment. Currently, each feeder cable length is limited to a maximum of 200 metres.
The present invention has a means by which a single feeder cable would be used to connect multiple sensors to the control 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. The length of the feeder cable is not limited by the cable characteristics, but can be extended as far as is required, which could be hundreds or thousands of metres, or more. * a... a
Examples of the embodiment of the invention will now be described by reference to the accompanying drawings.
Figure IA is a block diagram of the feeder system; Figure lB is a block diagram of the feeder cable connectivity at a feeder node; Figure 2 is a block diagram of the internal arrangement of a feeder node; Figure 3A is an illustration of connection to a local power supply source; Figure 3B is an illustration of various sources of power; Figure 4A is an illustration of a feeder node; Figure 48 shows cable access ports for a feeder node; and Figure 4C shows a two-part feeder node with access ports for the interconnecting cables.
A system utilising the unlimited feeder would generally consist of a feeder controller 1, feeder cable 2, a node 3, sensor cables 4 and sensors 5. A node 3 would generally consist of control data in 6 lines, control data out 7 lines, sensor data in 9 lines, sensor data out 8 lines, a decoder 10, a power supply unit LI, forward amplifier 14, return amplifier 12, node controller 13, data storage memory 15, sensor drivers 16, main compartment 27, sensor joint compartment 17, sensor cable terminations 18, tie cables 31. Power supply provision may include local power input 19, power in 20, 22, power out 21, 23.
The node 3 would include feeder and power cable entry 24, sensor cable entry 25, seal 26, main compartment cover 27, sensor joint compartment cover28.
Tie cable entry 30 would not be required where the main compartment 27 and the sensor joint compartment 17 are a single combined enclosure. However, an internal dividing wall would still be employed to separate the compartments.
The feeder controller 1 can be located at the roadside or in a building. The feeder cables 2 may consist of either data circuits only, power supply circuits only or data and power supply circuits. I..
The sensor drivers 16 may be located in either the feeder controller I or each node 3. Data communication between the feeder controller I and the nodes 3 and between the nodes 3 is S...
through a feeder 2 system. The feeder 2 system will consist of either electrical cable, optical cable, radio communication or a combination of electrical, optical and radio.
The feeder controller I communicates with the nodes 3 through the feeder system. Each node 3 * is uniquely addressable. The feeder controller I can communicate simultaneously with one or p more nodes 3. The feeder controller I can communicate with other feeder controllers.
Each node 3 can communicate with the feeder controller I. A node 3 can communicate with any other node 3. A node 3 can be used as a feeder jointing unit or as a signal repeater, with or without vehicle sensors 5 attached.
A node 3 can be located in an underground chamber, in a cabinet or other enclosure, in a recess, in an open-air environment, on or inside a building, on a wall, buried underground, in a confined space, or in a fluid or gaseous environment.
Each node 3 has two or more feeder cable 2 ports, allowing a straight through' feeder 2 connection, a T' connection or a star' connection.
The power, data and control functions will be housed in the main compartment 27. The detection sensors 5 are terminated in a sensor joint compartment 17.
A separate wall could be provided between the two compartments to establish a water-tight and gas-tight seal.
Each compartment has a separate cover. Each cover has a water-tight and gas-tight seal. The use of separate compartments allows access to one compartment less frequently than the other, with a view to maintaining the sealed integrity of the compartment.
Tie cables 31 connect the two compartments 17, 27. The tie cables 31 are sealed against the part of the compartment through which they enter or exit 30, so as to provide water-tight and gas-tight seals.
All cable entry points are sealed against ingress of fluids and gases. All references to water tightness or gas tightness refer to the inhibiting of the transgression of fluidic matter or gaseous matter through or around the said seals. S. I..
The power supply unit I] can receive input power 19 from a local power source, the control *5* data input 6 circuit, the data input circuit 9, a dedicated power supply circuit 19 in the same cable as the control and data 2, or from a separate power feed cable running in nominally the same route as the control and data cable 2. The power supply unit 11 can receive power from one source or from more than one source simultaneously.
: . The power supplied to the power supply unit 11 can be in the form of direct current or alternating current.
Claims (10)
1. A feeder system apparatus as used in the detection of transportation vehicles in which: a single feeder connects to one or more vehicle sensor locations without a necessary limit in the number of sensor locations to be connected; a single feeder connects to one or more vehicle sensor locations without a necessary limit in the length or geographical distance of the feeder prior to its connection the a sensor location; a single feeder connects to one or more vehicle sensor locations without the necessity of installing a single complete feeder to each sensor location; a single feeder connects to one or more vehicle sensor locations without a lower feed distance limit and/or without an upper feed distance limit; the feeder provides one or more paths for data communication and/or power supply; a feeder control means is located at one or more ends of the feeder system; the feeder consists of electrical cable, optical cable and/or radio frequency communication; the feeder system is connected to at least one feeder control means and extends to the first feeder connection means, and then on to further feeder connection means where necessary; a feeder control means is located at the roadside or in a building; the feeder control means has two-way communication with any feeder connection means in the same feeder system as the feeder control means; the feeder control means is able to communicate simultaneously with one or more feeder connection means in the same feeder system as the feeder control means; the feeder control means is able to communicate with one or more other feeder control means in S. the same feeder system as the first said feeder control means; a feeder connection means provides connection to and communication with vehicle sensors; a feeder connection means has two or more feeder connection ports allowing a feeder network to be implemented; a feeder connection means consists of control data circuits, sensor data circuits, power input and output circuits, power supply unit, repeater amplifiers, control unit, data storage memory, sensor drive circuits, sensor connection unit, local external power supply input, data encoder, andlor data decoder; each feeder connection means is uniquely addressable; the feeder connection means is able to communicate with one or more other feeder connection means in the same feeder system as the first said feeder connection means; the feeder connection means is used as a feeder jointing or extending means, with or without vehicle sensors attached; the feeder connection means is able to act as a signal booster, repeater or relay means, with or without vehicle sensors attached; the feeder connection means consists of cable access points for any power supply cables, any sensor cables, any feeder cables and/or any other cables; the sensor drive circuits are located in the feeder control means and/or in the feeder connection means; the feeder connection means includes a power supply unit which receives input power from a local external power source; the feeder connection means includes a power supply unit which receives input power from the control data input circuit and/or from the data input circuit; *S.
the feeder connection means includes a power supply unit which receives input power from a dedicated power supply circuit which is transmitted from the same source and/or through the same medium or cable as the control data input circuit; *S..
* the feeder connection means includes a power supply unit which receives input power from a dedicated power supply circuit which is transmitted from the same source and/or through the same medium or cable as the data input circuit; the feeder connection means includes a power supply unit which receives input power from a dedicated power feed cable running partly or completely along the same route as any control or data cable; the feeder connection means includes a power supply unit which receives input power from one or more sources; and/or the feeder connection means includes a power supply unit which receives input power in the form of direct current and/or alternating current.
2. A feeder system apparatus as claimed in claim 1, in which the or each feeder connection means is located in one or any combination of: an underground enclosure; a cabinet or other enclosure; a recess; an openair environment; on or inside a building; on a wall; a tunnel or underpass; buried underground; a confined space; a fluid or gaseous surroundings; or a portable or mobile enclosure.
3. A feeder system apparatus as claimed in claims I and 2, which consists of a sealing means which prevents, either completely or only substantially, the transgression of fluid matter, gaseous matter, solid matter and/or particulate matter through, around or into: cable access points; each enclosed internal volume; the outer surfaces; or internal dividing walls.
4. A feeder system apparatus as claimed in claims 1, 2 and 3 in which each feeder connection * means comprises one or more enclosure means. p... p... S.*
5. An enclosure means as claimed in claim 4 which consists of:
S s**S * .
a main separated volume which contains power, data and control apparatus; a separated volume which contains the joints for the sensors; a single volume which contains both the joints for the sensors and all other power, data and control apparatus; and/or one or more internal dividing walls which provide separated volumes.
6. A feeder system apparatus as claimed in claims 1, 2 and 3 in which each feeder control means comprises one or more enclosure means and/or separated volumes.
7. An enclosure means as claimed in claims 1, 4, 5 and 6, in which the apparatus enclosed within any two separated volumes may or may not be connected by cables.
8. An enclosure means as claimed in claims 1, 4, 5, 6 and 7, in which each enclosure means and/or separated volume comprises: one or more access covers providing access to apparatus within the feeder connection means; one or more access covers providing access to apparatus within the feeder control means; and/or an access cover for each separated volume.
9. An enclosure means as claimed in claims 1, 2, 3, 4, 5, 6, 7 and 8, in which: the sensor is a narrow inductive loop arrangement installed in a single slot; and/or the sensor is a box-cut loop arrangement of any shape or circular-cut loop arrangement. * * *.**
SS
10. A feeder system apparatus as claimed in claim 1 and substantially as herein described.
i*S*a* *
S
**.*.* * S *.*
S *.S* S. *
S
S
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0716454A GB2445814A (en) | 2006-08-23 | 2007-08-23 | Data communications network for controlling traffic detection sensors. |
| GB0809907A GB2456839A (en) | 2006-08-23 | 2008-06-02 | Data communication network for connecting inductive loop sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0517235A GB2418515C (en) | 2004-08-23 | 2005-08-24 | Road vehicle sensor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0616649D0 GB0616649D0 (en) | 2006-10-04 |
| GB2431272A true GB2431272A (en) | 2007-04-18 |
| GB2431272B GB2431272B (en) | 2008-03-05 |
Family
ID=37102661
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0616649A Expired - Fee Related GB2431272B (en) | 2005-08-24 | 2006-08-23 | Unlimited feeder system |
| GB0616718A Expired - Fee Related GB2431273B (en) | 2005-08-24 | 2006-08-24 | Narrow inclined vehicle sensing region |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0616718A Expired - Fee Related GB2431273B (en) | 2005-08-24 | 2006-08-24 | Narrow inclined vehicle sensing region |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB2431272B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841066A (en) * | 2017-11-27 | 2019-06-04 | 大唐移动通信设备有限公司 | Processing method, geomagnetism detecting device, electronic equipment and the storage medium of economize on electricity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939512A (en) * | 1986-11-13 | 1990-07-03 | Dennison James L | Modular, non-metallic, hard shell, predimensioned, preformed and sealed induction loop vehicle detection system and method of installation |
| WO1995028693A1 (en) * | 1994-04-19 | 1995-10-26 | Honeywell Inc. | Magnetometer vehicle detector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3521655A1 (en) * | 1985-06-18 | 1987-01-15 | Mueller Ind Management Gmbh | Device for detecting vehicle traffic by means of magnetic-field detectors |
| GB9903783D0 (en) * | 1999-02-18 | 1999-04-14 | Univ Edinburgh | Vehicle detector and classifier |
| US6771064B2 (en) * | 2001-06-29 | 2004-08-03 | Inductive Signature Technologies, Inc. | Inductive sensor apparatus and method for deploying |
| JP3769250B2 (en) * | 2002-07-10 | 2006-04-19 | 日立電線株式会社 | Vehicle detection device |
| WO2006005208A1 (en) * | 2004-07-08 | 2006-01-19 | Iem Sa | Detection terminals and method for observing a parking place with the aid of a terminal |
-
2006
- 2006-08-23 GB GB0616649A patent/GB2431272B/en not_active Expired - Fee Related
- 2006-08-24 GB GB0616718A patent/GB2431273B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939512A (en) * | 1986-11-13 | 1990-07-03 | Dennison James L | Modular, non-metallic, hard shell, predimensioned, preformed and sealed induction loop vehicle detection system and method of installation |
| WO1995028693A1 (en) * | 1994-04-19 | 1995-10-26 | Honeywell Inc. | Magnetometer vehicle detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841066A (en) * | 2017-11-27 | 2019-06-04 | 大唐移动通信设备有限公司 | Processing method, geomagnetism detecting device, electronic equipment and the storage medium of economize on electricity |
| CN109841066B (en) * | 2017-11-27 | 2020-11-27 | 大唐移动通信设备有限公司 | Power saving processing method, geomagnetic detector, electronic device, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2431273A (en) | 2007-04-18 |
| GB0616649D0 (en) | 2006-10-04 |
| GB2431272B (en) | 2008-03-05 |
| GB0616718D0 (en) | 2006-10-04 |
| GB2431273B (en) | 2007-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100823 |