EP2991161A1 - Antennengehäuse mit Erweiterungsmitteln - Google Patents

Antennengehäuse mit Erweiterungsmitteln Download PDF

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Publication number
EP2991161A1
EP2991161A1 EP14182816.0A EP14182816A EP2991161A1 EP 2991161 A1 EP2991161 A1 EP 2991161A1 EP 14182816 A EP14182816 A EP 14182816A EP 2991161 A1 EP2991161 A1 EP 2991161A1
Authority
EP
European Patent Office
Prior art keywords
tube
antenna housing
pit
collar
extension means
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Withdrawn
Application number
EP14182816.0A
Other languages
English (en)
French (fr)
Inventor
Lasse PILEGAARD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kamstrup AS
Original Assignee
Kamstrup AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kamstrup AS filed Critical Kamstrup AS
Priority to EP14182816.0A priority Critical patent/EP2991161A1/de
Publication of EP2991161A1 publication Critical patent/EP2991161A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2233—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in consumption-meter devices, e.g. electricity, gas or water meters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the present invention relates to an antenna housing for arrangement with a hole of a pit lid of a pit for transmission of consumption data from a consumption meter arranged in the pit.
  • the invention relates to an antenna housing adapted to fit with thick pit lids.
  • a consumption meter may be used for measuring utility usage in connection with supply of the utility, e.g. of water, heating, cooling or electricity, and may in turn be used in connection with charging of the consumed quantity of the utility.
  • Consumption meters may be used in connection with district heating, district cooling and/or distributed water supply. Such consumption meters preferably operate by way of wireless data transmission.
  • Wireless data transmission from consumption meters placed at the premises of a consumer offers a number of advantages: The need for on-site reading is eliminated, which otherwise may involve labour intensive and time consuming and in turn costly processes. Further, wireless transmission offers advantages in terms of the option of more frequent and close monitoring and control of utility consumption, as well as the elimination of human errors related to manual reading procedures.
  • United States Patent US 5,825,303 to Badger Meter, Inc. discloses a tubular housing with an antenna and associated electronics for mounting with a pit lid between a cap and a collar, wherein the electronics is completely sealed by means of a body of sealant.
  • United States Patent US 8,116,071 B2 to Itron, Inc. discloses an automatic reading system with a device thereof being adapted to be mounted in a utility meter pit, the housing of the device being integrally formed with at least two different mounting members selected from a rod mounting member, a wall mounting member, a tie mounting member and a lid mounting member.
  • United States Patent US 8,350,719 B2 to the Ford Meter Box Company, Inc. discloses a pit lid plug and a bracket assembly configured to suspend a transmitter inside a meter pit.
  • the pit lid plug is arranged with the pit lid and engages with the bracket to suspend the transmitter below and adjacent to the lid of a meter pit.
  • the invention preferably seeks to mitigate, alleviate or eliminate the disadvantages of the prior art.
  • an antenna housing for arrangement with a hole of a pit lid of a pit for transmission of consumption data from a consumption meter arranged in the pit, wherein the pit lid has a first surface facing opposite the pit and a second surface facing the pit, and the hole extending from the first surface to the second surface and having a hole diameter, the antenna housing comprising:
  • the subject antenna housing comprises extension means, which extends from the second end of the tube.
  • the extension means provides an extension to the tube so as to obtain an extended antenna housing which is longer than the tube per se.
  • the so-extended antenna housing has a length which extends fully through the hole of the pit lid, and likely beyond the second surface of the pit lid.
  • the extension means carries a collar, and the extended antenna housing is mounted, by means of the cap and the said collar so as to range from the cap arranged at or slightly above the first surface of the pit lid to or slightly beyond the second surface of the pit lid, at which the collar is arranged.
  • the cap and the collar are arranged with the tube and the extension means, respectively. Both of the cap and the collar has a diameter, which is larger than the diameter of the hole so as to suspend the tube and the extensions means from the first and second surfaces, respectively, of the pit lid. Fastening means may be used to secure the cap to the tube and the collar to the extension means, respectively.
  • an "antenna housing” should be understood as a housing holding an antenna for transmission of signals, e.g. an antenna for transmission of radio frequency signals.
  • the housing may in turn have one or more sections, which are fully or partly closed as with the tube of the housing to form one or more closed compartments, and it may have open sections, which may be accessed from the outside as with a volume defined between the second end of the tube and the collar and framed by a number of e.g. threaded rods.
  • the antenna housing should be capable of accommodating any cabling connected to the antenna, i.e. with any fully or partly closed sections as the tube, as well as with any open sections, so as to arrange the cabling within any volume defining the antenna housing .
  • the antenna is arranged with the tube, however, a part of the antenna, e.g. a part of a conductive element of the antenna or a part of a ground plane of the antenna, may extend from the tube with which it is otherwise arranged and into the extension means.
  • extension means should be understood as means which extends the mounting functionality of the tube of the antenna housing so as to be able to mount the tube with pit lids which have a thickness which extends beyond the length of the tube.
  • the tube may be mounted with a pid lid with a thickness smaller than the length of the tube, e.g. by means of the cap and a collar arranged with the second end of the tube
  • the extension means are means with extend this functionality.
  • the extension means provide a physical extension from the second end of the tube, thus extending the antenna housing when arranged with the pit lid, from a position between the first and the second surfaces of the pit lid and at least until the second surface of the pit lid so as to provide a base for the securing collar.
  • a “collar” should be understood as an element like a disc, which, when fastened to the extension means by fastening means is capable of suspending the extension means from the second end of the pit lid, so as to secure the tube and the extension means in the hole of the pit lid between the collar and the cap.
  • the collar has a contact face for abutting the second surface of the pit lid.
  • the diameter of the collar is larger than the diameter of the hole, either per se or by means of wings extending from a more narrow central part of the collar.
  • the collar may in turn be variably or fixed mounted with the extension means. Being variable arranged the collar may, during mounting of the tube and the extension with the pit lid hole, the collar may be adjusted with the extension means to abut the second surface of the pit lid while the extension means is fixed relative to the tube and so as to adjust to pit lids of varying thickness. Alternatively, the collar may be fixed arranged with the extension means, and any adjustment of the fixed combination of the extension means and the collar relative to the tube is made by adjusting the extension means relative to the tube so as to adjust to pit lids of varying thickness.
  • the collar is arranged with the extension means between the first end and the second end of the extension means.
  • the position of the collar is adjusted to fit with the thickness of the pit lid, so that the tube and the extension means are secured between the first and the second surfaces by means of the cap and collar.
  • the position of the collar with the extension means divides the extension means into a first part, which is situated within the hole of the pit lid, and a second part, which extends beyond the position of the collar at the second surface of the pit lid and into the pit volume.
  • the antenna housing according to the invention allows for the easy and simple mounting with pit lids of thicknesses beyond the typical thickness of 2-4 inches, i.e. with pit lids of thicknesses up to 8 or 10 inches or even thicker as applied in cold geographies.
  • the extension means are easy to mount onto the tube of the antenna housing in case the length of the tube per se does not suffice for mount with a pit lid. Also with many pit installations the operator may not know in advance the exact dimensions of the pit lid. With the present invention any need for the operator to bring a selection of antenna housing tubes of different lengths, e.g. 3 inches, 5 inches, 7 inches and 10 inches, is eliminated, as the operator needs only bring the standard tube and the extension means, allowing a reduced stock to be carried and in turn to reduce costs.
  • the operator may bring only the longest of the said tubes, e.g. a 10 inches tube, to fit with all relevant thicknesses of pit lids and which in turn may fit also with thinner pit lids of e.g. 3 inches, however, such tubes are more voluminous and take up more space when installed and in stock, and are as well more expensive to produce.
  • the operator may adjust the position of the collar to adapt to the specific pit lid thickness.
  • the collar is arranged with the extension means between the first end and the second end of the extension means and adjacent to the second end of the extension means.
  • the length of the extension means is selected so that the tube with the extension means extends only slightly beyond the second surface of the pit lid. With this embodiment any second part of the extension means extending from the second surface of the pit lid into the pit volume is minimized for ease of operation.
  • the extension means comprises at least one threaded rod mounted with the second end of the tube, and wherein the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • a threaded rod which in turn may be mounted into a threaded well at the second end of the tube, allows for easy and adjustable mount of the extension means per se, and as well for easy and adjustable mount of the collar with extension means.
  • the extension means comprises at least two threaded rods mounted with the second end of the tube, and the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • At least two threaded rods which may be mounted into at least two threaded wells at the second end of the tube, provides mechanical stability to the extension means while maintaining similar mounting advantages as with the application of a single threaded rod.
  • the at least two threaded rods are arranged with wells arranged at the wall of the tube, more preferably with wells arranged at the wall of the tube and diametrically opposite each other.
  • the means for fastening the collar to the extension means may comprise at least one nut, preferably a wing nut.
  • the application of nuts and in particular wings nuts as fastening means allows for easy, fast and reliable fastening of the collar.
  • the extension means comprises an extension tube telescopically engaging with the tube, and the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • the tube and an extension tube are axially oriented, so as to allow the extension tube to be telescopically slided into or onto the tube.
  • Such engagement of the extension means with the tube allows for easy adjustment of the length of the combination of the tube and the extension means to the actual thickness of the pit lid, and for easy mounting therewith.
  • the antenna housing may have means for fasting the extension tube to the tube, such as clamping means.
  • the extension means comprises an extension tube with snap-fitting means for snap-fitting with corresponding snap-fitting means of the tube, and wherein the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • the extension tube may be snap-fitted directly onto the tube, e.g. by using snap-fitting means of the second end of the tube which may otherwise be used for mounting a cover to the tube, or the extension tube may be snap-fitted onto an adapter element which in turn may be snap-fitted onto the second end of the tube.
  • the snap-fitting means of extension tube and the tube may involve locators with the extension and locks with tube or vice versa. Snap-fitting allows for easy assembly of the tube and the extensions tube.
  • the extension means may as well comprise an extension tube with a threading for engaging with the tube via a corresponding threading with the tube, and wherein the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • the treadened engagement allows for easy adjustment of the length of the combination of the tube and the extension means, and for easy mounting of the antenna housing with the pit lid.
  • the extension means being an extension tube allows for simple mounting of the collar with the extension means by means of a threading with the extension means and a corresponding threading with the collar.
  • Such threading means allow for easy fastening of the collar to the extension means and for easy securing of the collar against the second surface of the pit lid.
  • extension means comprises flexible extension means, preferably a flexible wire, and wherein the antenna housing comprises fastening means for securing the collar against the second surface of the pit lid.
  • the collar is adapted for mounting with e.g. a flexible wire, and the wire may in turn by mounted with the tube by ordinary fastening means, which may as well be adjustable for adjusting the wire length to properly secure the collar against the pit lid second surface.
  • the tube preferably has a threading and the cap has a corresponding threading for engagement with the tube.
  • Such threading means allows for easy assembly of the cap with the tube and for easy assembly of the tube with the cap with the hole of the pit lid from either surface of the pit lid, preferably from the first surface of the pit lid.
  • the collar preferably has as an indentation for accommodating a cable, which in turn may be a signal cable connecting the consumption meter and the antenna housing for transmission of signals relating to the consumption data from the consumption meter to the antenna.
  • signals may in turn be radio frequency signals from a transponder located with the consumption meter.
  • the antenna preferably comprises a conductive element, preferably a helical or dipolar conductive element, and a ground plane. Such antenna allows for efficient signal transmission.
  • the conductive element of the antenna is arranged adjacent to the first end of the tube so as to obtain optimal transmission conditions with minimum of interference, reflection and absorption.
  • the consumption meter may be or may be part of a charging consumption meter or utility meter, e.g. a water meter for cold and/or hot water, a gas meter, a heat meter, a cooling meter, an energy meter or a smart meter, where the consumption meter is arranged for measuring consumption data of a supplied utility used as a basis for billing.
  • the consumption meter may be used in connection with district heating, district cooling and/or distributed water supply.
  • the consumption meter may be a legal meter, i.e. a meter which is subdued to regulatory demands. Such regulatory demands may be demands to the precision of the measurements.
  • the consumption meter is based on ultrasonic flow measurement and includes an ultrasonic flow meter part.
  • the ultrasonic flow meter is a transit time flow meter arranged to measure a flow rate of a fluid flowing in a flow channel by use of known operation principles for transit time flow meters, where ultrasonic signals are emitted at one transducer and received at the other transducer, and where the difference in time-of-arrival between oppositely propagating signals is measured and converted into a flow rate.
  • the piezoelectric transducers are operated by the control circuit, which based on the involved signals generate a signal or value indicative of the flow rate of the fluid.
  • the level of signal treatment of the control circuit may vary from basic signal treatment, where processed signals are output to a further electronic unit for further signal processing, to a complete signal treatment resulting in the determination of the flow rate.
  • Fig 1 shows the antenna housing 100 with the extension means 140 of the present invention.
  • the antenna housing 100 has tube 110, which is a tubular body, cap 120, an antenna, and one threaded rod 140 which holds collar 150.
  • the tube 110 made from polycarbonate, has a first end 110a and a second end 110b. Also the tube 110 has a threading on its outer surface, which may be used for mounting the tube 100 per se with a pit lid not thicker than the length of the tube by means of a collar with corresponding threading, and a cover 112 for closing the second end 110b.
  • the cap 120 made from polycarbonate, is mounted onto the first end 110a of the tube 110.
  • the antenna which comprises a helical antenna conductive element 130 and a planar ground plane 132, is arranged within the tube 110, the conductive element 130 being arranged adjacent to the first end 110a of the tube 110.
  • the conductive element 130 is connected to the ground plane 132 and to the cable 136, which in turn is connected to a consumption meter (not shown).
  • the interconnection between the conductive element 130 and the cable 136 is sealed by sealing block 134 made from polyvinyl chloride.
  • a ferrite bead inductor 138 is arranged to encircle part of the cable 136 for removal of any unintended current flowing on the exterior of the cable 136.
  • a threaded rod 140 made from polycarbonate, which makes up the extension means of the antenna housing 100, is arranged with the tube 110 in a threaded well 142.
  • the threaded rod 140 holds the collar 150, made from polycarbonate and intended for securing the tube 110 with the threaded rod 140 within a hole of a pit lid between the cap 120 and the collar 150.
  • the cover 112 made from polycarbonate, which is snap-fitted onto the second end 110b of the tube 110 has openings for receiving the cable 136 and the threaded rod 140.
  • Fig. 2 shows the antenna housing 100 of fig. 1 arranged with a hole 202 of a pit lid 200.
  • the pit lid 200 has a first surface 210 and a second surface 220 with a distance Lpit lid therebetween.
  • the tube 110 with the threaded rod 140 is mounted with the hole 202 between the first surface 210 and the second surface 220 between the cap 120 and the collar 150, the collar 150 abutting the second surface 220.
  • the tube 110 has a length L tube , which is shorter than L pit lid. Accordingly, the tube 110 per se, i.e. without the threaded rod 140, is too short to be mounted with the pit lid 200 by means of cap 120 and collar 150.
  • the threaded rod 140 which has a length of L extension means, constitutes extension means of the housing 100, so that the combined lengths Ltube+Lextension means of the tube 110 and the threaded rod 140 is longer than L pit lid. Accordingly the so-extended antenna housing 100 made up of the combination of the tube 110 and the threaded rod 140 may be secured between the first surface 210 and the second surface 220 of the pit lid 200 by means of the cap 120 and the collar 150.
  • the length of the tube L tube is the length of that part of the tube 110, which is situated between the first and the second surface 210, 220 of the pit lid 200, when the tube 110 is arranged in the pit lid 200.
  • the length of any part of the tube 110 which extends above the first surface 210 of the pit lid 200 and engaging with the cap 120 is not included with the length of the tube L tube .
  • the length of the extension means L extension means is the length of the extension means, which extends from the second end 110b of the tube 110 when the tube 110 with extension means is arranged in the pit lid.
  • the length of any part of the extension means which extends into the tube 110, e.g. into any well 142 thereof, is not included with the length of the extension means Lextension means.
  • the length of any part of extension means extending beyond the second surface 110b of the pit lid 110 is included with the length of the extension means Lextension means.
  • the thickness of the pit lid L pit lid is the distance between the first and second surfaces 210, 220 of the pit lid 200 at the position of the hole 202 of the pit lid 200.
  • any other thickness should be distinguished from Lpit lid, e.g. the thickness Lpit lid periphery as observed at the periphery 230 of the pit lid 110, which has recesses or the like for proper mounting of the pit lid 200 with a pit wall and is shorter than Lpit lid.
  • Figure 3 shows a perspective of the antenna housing 100 with two threaded rods 140, which provide additional mechanical stiffness to the construction over the embodiment of one threaded rod only.
  • the collar 150 has an indentation 152 for receiving the cable 136 and holes 154 for receiving the threaded rods 140.
  • the collar 150 is adapted for being secured against a second surface 220 of the pit lid 200 by means of wing nuts (not shown).
  • FIG 4 shows the antenna housing 100 with an extension tube 142, made from polycarbonate, with snap-fitting means 148.
  • the extension tube 142 is snap-fitted onto an adaptor element 118, which has corresponding snap-fitting means to engage with the extension tube 142.
  • the adaptor element is adapted to receive the cable 136 and to be fastened onto the second end 110b of the tube 110 by additional snap-fitting means.
  • extension tube 142 may as well be snap-fitted directly onto the second end 110b of the 110 by means of the snap-fitting means of the tube 110 otherwise used for securing the cover 112.
  • the extension tube 142 further has a threading on its outer surface for engaging with the collar 150 which has a corresponding inner threading.
  • Figure 5 shows the antenna housing 100 with an extension tube 144, made from polycarbonate and having a threading on its outer surface for engaging with a corresponding threading 119 on the inner surface of the tube 110.
  • the threading on the outer surface of the extension tube may further be used for engaging with the collar (not shown).

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EP14182816.0A 2014-08-29 2014-08-29 Antennengehäuse mit Erweiterungsmitteln Withdrawn EP2991161A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14182816.0A EP2991161A1 (de) 2014-08-29 2014-08-29 Antennengehäuse mit Erweiterungsmitteln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14182816.0A EP2991161A1 (de) 2014-08-29 2014-08-29 Antennengehäuse mit Erweiterungsmitteln

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EP2991161A1 true EP2991161A1 (de) 2016-03-02

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EP14182816.0A Withdrawn EP2991161A1 (de) 2014-08-29 2014-08-29 Antennengehäuse mit Erweiterungsmitteln

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394362A (zh) * 2017-06-21 2017-11-24 维沃移动通信有限公司 一种天线适配的方法、天线以及终端

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298894A (en) 1992-06-17 1994-03-29 Badger Meter, Inc. Utility meter transponder/antenna assembly for underground installations
US5825303A (en) 1996-08-30 1998-10-20 Badger Meter, Inc. Sealed housing and method of sealing for apparatus in meter pit enclosures
US6072405A (en) * 1998-04-13 2000-06-06 Sears; Lawrence M. Meter transmission unit for use with a pit set utility meter
WO2001086752A1 (en) * 2000-05-05 2001-11-15 Badger Meter, Inc. Kit and method for mounting a transmitter in subsurface meter pits
US20080074283A1 (en) * 2006-09-25 2008-03-27 Jeff Verkleeren Utility meter antenna for ground mounted meter boxes
US7429933B2 (en) 2003-04-02 2008-09-30 Brennan Michael T Bracket system and method for use with remote-reading water meters
US8116071B2 (en) 2007-04-16 2012-02-14 Itron, Inc. Utility pit meter AMR device with multiple mounting provisions
GB2484401A (en) * 2010-10-04 2012-04-11 Elster Metering Ltd Apparatus for mounting an antenna in a water meter pit lid
US8350719B2 (en) 2009-07-13 2013-01-08 The Ford Meter Box Company, Inc. Lid plug and bracket

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298894A (en) 1992-06-17 1994-03-29 Badger Meter, Inc. Utility meter transponder/antenna assembly for underground installations
US5825303A (en) 1996-08-30 1998-10-20 Badger Meter, Inc. Sealed housing and method of sealing for apparatus in meter pit enclosures
US6072405A (en) * 1998-04-13 2000-06-06 Sears; Lawrence M. Meter transmission unit for use with a pit set utility meter
WO2001086752A1 (en) * 2000-05-05 2001-11-15 Badger Meter, Inc. Kit and method for mounting a transmitter in subsurface meter pits
US7429933B2 (en) 2003-04-02 2008-09-30 Brennan Michael T Bracket system and method for use with remote-reading water meters
US20080074283A1 (en) * 2006-09-25 2008-03-27 Jeff Verkleeren Utility meter antenna for ground mounted meter boxes
US8116071B2 (en) 2007-04-16 2012-02-14 Itron, Inc. Utility pit meter AMR device with multiple mounting provisions
US8350719B2 (en) 2009-07-13 2013-01-08 The Ford Meter Box Company, Inc. Lid plug and bracket
GB2484401A (en) * 2010-10-04 2012-04-11 Elster Metering Ltd Apparatus for mounting an antenna in a water meter pit lid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394362A (zh) * 2017-06-21 2017-11-24 维沃移动通信有限公司 一种天线适配的方法、天线以及终端
CN107394362B (zh) * 2017-06-21 2020-10-16 维沃移动通信有限公司 一种天线适配的方法以及终端

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