WO2015096958A2 - Détecteur de proximité à antenne - Google Patents

Détecteur de proximité à antenne Download PDF

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Publication number
WO2015096958A2
WO2015096958A2 PCT/EP2014/076491 EP2014076491W WO2015096958A2 WO 2015096958 A2 WO2015096958 A2 WO 2015096958A2 EP 2014076491 W EP2014076491 W EP 2014076491W WO 2015096958 A2 WO2015096958 A2 WO 2015096958A2
Authority
WO
WIPO (PCT)
Prior art keywords
proximity sensor
antenna
sensor according
cap
circuit carrier
Prior art date
Application number
PCT/EP2014/076491
Other languages
German (de)
English (en)
Other versions
WO2015096958A3 (fr
Inventor
Albert Dorneich
Sorin Fericean
Reinhard Droxler
Daniel Kräter
Tamas Horvath
Original Assignee
Balluff Gmbh
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 Balluff Gmbh filed Critical Balluff Gmbh
Publication of WO2015096958A2 publication Critical patent/WO2015096958A2/fr
Publication of WO2015096958A3 publication Critical patent/WO2015096958A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/04—Systems determining presence of a target
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal

Definitions

  • Antenna Proximity Sensor The invention relates to an antenna proximity sensor.
  • EP 2 031 416 A1 discloses a microwave proximity sensor comprising a measuring head with a transmitter for microwave radiation, wherein the transmitter has such a power that distances between the measuring head and target object are detectable below 15 m, and a receiver for reflected at a target object Microwave radiation, a frequency modulation device, with which the frequency of emitted via the transmitter microwave radiation is modulated, and an evaluation device with a mixing device, by which at least one mixing signal from a transmission signal and a reception signal can be generated, wherein by evaluating the at least one mixing signal, a distance between the Measuring head and the target object is calculable.
  • the object of the invention is to provide an antenna proximity sensor and, in particular, a microwave sensor which, with a simple production method, has an optimized housing of its components.
  • a housing is provided with a tubular element and with a cap disposed on the tube element, a first chamber, which is formed on the tubular element, is provided, a second chamber, which is formed on the cap provided is provided, a partition between the first chamber and the second chamber, a circuit arrangement, which in the first Chamber is positioned, is provided, and a transceiver device is provided with an antenna device, wherein the antenna device is positioned in the second chamber.
  • the antenna device and the circuit arrangement are arranged in different chambers, which are separated by the partition wall.
  • the second chamber with the antenna device in turn is formed on the cap, through which the tubular element is closed at one end.
  • the corresponding antenna proximity sensor can be easily manufactured.
  • the cap can be produced, for example, by means of an injection molding process or the like with an integrated dividing wall.
  • a receiving space for the antenna device is formed on the cap, which is limited by a lid.
  • the antenna device can then be inserted into the receiving space in a simple manner, and the receiving space is then closed to the outside through the cover.
  • the cap is formed in two parts with the lid and a fixing region which is fixed to the tube element. This makes it easy to the pipe element and thus the
  • the receiving space is limited to the lid opposite by the partition wall.
  • the partition then forms a bottom of the receiving space. The number of components can be kept low.
  • the lid is designed as a radome.
  • the antenna device can be protected on the cap in an optimized manner.
  • the lid is designed so that it is permeable to the corresponding electromagnetic transmission radiation and reception radiation.
  • the lid has an immersion area, which is immersed in the receiving space.
  • the lid can be easily fixed to the cap.
  • a radome can be realized in a simple manner.
  • the cover has at least one wing and, for example, has spaced-apart wings, which is immersed in a gap between a holder of the antenna device and a wall which delimits the receiving space.
  • the lid can be easily fixed to the cap, without additional form-locking elements such as screws or the like must be provided.
  • the gap is filled with a molding compound such as a casting resin, then during manufacture of the antenna proximity sensor, a wing may be immersed in the uncured composition, and curing will then provide an additional bonding area.
  • the cover has a wall which faces the antenna device and which on a holder of the
  • Antenna device is applied and (in particular at a distance in the millimeter range) spaced from the holder, wherein patches of Antenna device are within a projection of the wall on the holder.
  • patches of Antenna device are within a projection of the wall on the holder.
  • At least one bushing and in particular exactly one bushing is arranged in the partition wall for a cable device and in particular for a flat cable, wherein in particular the bushing is designed as a slot.
  • the passage is arranged on the cap between a body of the antenna device and a wall of the second chamber.
  • the cable device can be guided along one side of the body of the antenna device and in the receiving space, the cable device does not have to be bent or bent.
  • a corresponding intermediate space in the cap can be filled with a molding compound such as a cast resin in a simple manner.
  • a holder of the antenna device covers the passage, wherein the holder is spaced from the bushing.
  • the holder can have several functions. In particular, it is designed as a carrier for patches of the antenna device and has a board shape. It can then also serve to hold the antenna device at least in one direction transverse to an axial direction. It is favorable if the second chamber has a shoulder and the
  • Antenna device has a holder which bears against a contact surface of the paragraph. This makes it easy to position the antenna device in the second chamber and fix at least in one Direction transverse to an axial direction.
  • the antenna device can be formed in a simple manner and the number of components needed to fix the antenna device in the second chamber can be minimized.
  • the shoulder, the second chamber and the holder are adapted to one another such that the holder is positioned transversely to an axial direction and in particular in all directions transversely to the axial direction in a form-fitting manner in the second chamber.
  • the proportion of components required for fixing can be minimized.
  • the production of the antenna proximity sensor can be carried out in a simple manner. In particular, in the manufacture of the holder is brought into the receiving space and applied to the contact surface of the paragraph. As a result, a final positioning of the antenna device in the cap has already been achieved.
  • a receptacle for at least one circuit carrier of the circuit arrangement is arranged on the partition, which in particular comprises a groove and / or a contact surface.
  • the at least one circuit carrier can be fixed to the cap in a simple manner.
  • the antenna proximity sensor can be manufactured in a simple manner.
  • the at least one circuit carrier is supported in a structurally simple manner in the tubular element on the cap.
  • the cap has at least one recess through which a tool can access a fixing region of the at least one circuit carrier on the cap.
  • the Recess formed so that with a screwdriver on the
  • Fixation area is accessible.
  • the at least one circuit carrier on the cap can be overflowed in a simple manner, for example
  • At least one passage is positioned at a distance from the receiving wall and in particular at a distance from one another.
  • the bushing serves to pass a cable device from the second chamber to the first chamber to the circuit arrangement there. If the receptacle is spaced from the feedthrough, then the cable device, which is in particular a flat cable, can be easily guided with a minimized cable path.
  • a receptacle for a cable device which electrically connects the antenna device and the circuit arrangement, is arranged or formed between the receptacle for the at least one circuit carrier and the at least one feedthrough.
  • the at least one circuit carrier is fixed to the cap and screwed in particular with this.
  • the at least one circuit carrier can be supported in a simple manner on the cap.
  • a combination of cap with fixed at least one circuit carrier can be inserted into the tubular element.
  • the cap has an immersion area, which in the
  • Submerged tube element As a result, a fixation or prefixing of the cap on the tube element can be achieved in a simple manner. It is favorable if at least one lip is arranged on the immersion region. Through the lip can be reached during the manufacturing process, a traction to fix a final position of the cap on the tube element. Furthermore, the at least one lip can also be designed as a sealing lip.
  • At least one recess is then formed on the immersion region, which recess has a receptacle for inserting at least one
  • Circuit carrier of the circuit arrangement and / or for at least partially receiving a cable device and / or for forming an access area for a tool.
  • the at least one circuit carrier can be fixed to the cap in a simple manner.
  • a cable routing between the antenna device and the circuit arrangement is optimized.
  • the connection can be made in a simple manner.
  • the cap is made of a plastic material. This is then in particular permeable to electromagnetic radiation in the relevant frequency range and in particular permeable to electromagnetic waves in the microwave range.
  • the antenna device is designed as a transceiver and in particular comprises a holder and a body.
  • the antenna device then comprises a transmitting part and a receiving part.
  • the main radio frequency exposure to electromagnetic waves can thereby be accommodated in the cap and there in the second chamber. If the antenna device comprises a holder and a body, then these can be easily fixed to the cap.
  • the holder holds, for example as a carrier patches the antenna device and can be used for mechanical
  • the body comprises in particular a housing in which the for sending and Receiving electromagnetic waves necessary electronic components are arranged.
  • the antenna device is designed as a microwave antenna device which transmits and receives electromagnetic waves in the microwave range.
  • the antenna device has a plurality of patches, which are designed in particular as flat fields or printed fields, and in particular the patches are arranged on a holder. It can thereby realize an antenna device with relatively small dimensions, the transmission fields and reception fields can be easily integrated into the cap. It is favorable if the circuit arrangement has at least one first
  • Circuit carrier and a second circuit carrier which are arranged in the first chamber, wherein the second circuit carrier is spaced from the first circuit carrier.
  • the first circuit carrier is held on the cap. As a result, this is supported in the housing.
  • Antenna proximity sensor is mechanically and / or electrically connected to the first circuit carrier.
  • the number of components can be reduced and it results in a simplified manufacturability. It is then furthermore favorable if the second circuit carrier is fixed to the first circuit carrier at a distance from it. This results in a simple manufacturability. It is possible to produce a combination cap with integrated antenna device and the circuit carriers, this combination then being introduced into the tube element.
  • circuit elements for digital signal processing are arranged on the second circuit carrier. These have a larger distance to the antenna device, which is arranged in the cap, wherein the first circuit carrier is seated on the cap.
  • high-frequency circuit elements are arranged on the first circuit carrier or circuit elements are arranged, which are opposite to a high-frequency radiation (with frequencies in the
  • Microwave range are insensitive.
  • circuit elements for controlling the transmitter-receiver device and in particular the antenna device and / or for signal processing and / or a final stage are arranged there on the first circuit carrier.
  • Circuit arrangement positioned positively in the tubular element. This results in optimized protection against mechanical and chemical influences.
  • connection element lid which is immersed opposite the cap in the tube element and on which an electrical connection of the antenna proximity sensor is arranged. This results in a simple manufacturability.
  • connection element cover Through the connection element cover, the pipe element can be closed in the area of the connection.
  • the tubular element of the cap opposite to a contact surface for at least one circuit carrier of the circuit arrangement.
  • the at least one circuit carrier can be supported in the tubular element.
  • the tubular element is made of a metallic material and is in particular in one piece. This results in a high mechanical stability.
  • the tubular element can then be easily externally threaded to fix the antenna proximity sensor to an application.
  • Figure 1 is a schematic sectional view of an embodiment of an antenna proximity sensor according to the invention, wherein at this one during the manufacture of the
  • Antenna proximity sensor used funnel is shown;
  • Figure 2 is a partial perspective sectional view of
  • FIG. 1 Figure 3 is a perspective view of a cap with arranged thereon
  • Figure 4 is a partial perspective sectional view of an embodiment of a cap
  • Figure 5 is a plan view of the cap of Figure 4 in the direction A;
  • Figure 6 is an enlarged view of the area B of Figure 4;
  • Figure 7 is a perspective view of an embodiment of a
  • FIG. 8 shows the antenna device according to FIG. 7 in a view corresponding to the direction C according to FIG. 4;
  • Figure 9 is a perspective view of an embodiment of a
  • FIGS. 1 and 2 are exemplary embodiments of an antenna proximity sensor according to the invention.
  • An exemplary embodiment of an antenna proximity sensor according to the invention which is shown in FIGS. 1 and 2 and designated therein by 10, comprises a housing 12.
  • the housing 12 in turn comprises a housing
  • the pipe element 14 is cylindrical in the embodiment shown. It has a jacket wall 16, which extends along an axial axis 18 and, for example, is formed rotationally symmetrical to it.
  • the jacket wall 16 surrounds an interior space 20.
  • the jacket wall 16 with the interior 20 forms a first chamber 22, which accommodates a circuit arrangement 24.
  • the tube element 14 can also have a shape other than cylindrical.
  • the tube member 14 is formed open, wherein an opening, for example, in cross-section is circular.
  • the tube member 14 is also open and has, for example, a circular opening.
  • a nozzle 30 is arranged on the tubular element 14 in the region of the second end 28, which has an example cylindrical wall 32.
  • This wall 32 is set back from a wall 34 outside the nozzle 30 of the tubular element 14, that is, the wall 32 is spaced from the wall 34.
  • the opening at the second end 28 thus has a smaller diameter than the opening at the first end 26.
  • a contact surface 36 is formed within the jacket wall 16, that is in the interior 20 at the transition from the wall 34 to the wall 32.
  • This contact surface 36 is annular, for example in the form of a circular ring.
  • the housing 12 is closed by a cap 38.
  • the cap 38 is fixed to the tube member 14.
  • the cap 38 is made of a plastic material.
  • the cap 38 comprises a fixing region 40, which is immersed via an immersion region 42 in the tubular element 14 in the region of the first end 26.
  • a wall 44 is arranged at the immersion region 42.
  • the wall 44 is cylindrical.
  • an annular contact surface 46 is formed between the immersion region 42 and the wall 44.
  • the abutment surface 46 is in the form of a circular ring.
  • An end face 48 of the tubular element 14 is ajar against the contact surface 46, that is, the cap 38 is supported via the contact surface 46 on the end face 48 at the first end 26 of the tubular element 14.
  • one or more lips 52 On one outer side of the fixing region 40 of the cap 38, one or more lips 52 (cf., for example, FIG.
  • a first lip 52a and spaced in the axial direction 18, a second lip 52b are arranged.
  • the lip or lips 52 are in particular formed in one piece on the fixing region 40.
  • a lip 52 is formed by a wedge-shaped protrusion, with a slant surface 54 ("slanted plane") at an acute angle to the outside of the fixation region 40 outside a lip 52.
  • a step 56 from which the slope surface 54 extends is parallel to the abutment surface 46 and is closer to the abutment surface 46 than the region where the slope surface 54 transitions to the outside of the fixation region 40 outside of the slope surface 54.
  • the lip or lips 52 are arranged circumferentially on the fixing region 40.
  • the lip or lips 52 serve to frictionally lock the cap 38 over the immersion region 42 when immersed in the tubular member 14, and to provide a seal, and in particular, a fluid seal.
  • a receiving space 58 is formed in the cap 38.
  • This receiving space 58 is bounded by the wall 44. It has, for example, at least approximately a hollow cylindrical shape.
  • the receiving space 58 is bounded to the inner space 20 by a partition wall 60.
  • the partition wall 60 is formed on the cap 38. In one embodiment, the dividing wall 60 is formed by the fixing portion 40.
  • a second chamber 62 is formed on the cap 38.
  • the second chamber 62 receives an antenna device 64.
  • the dividing wall 60 separates the second chamber 62 from the first chamber 22.
  • a shoulder 66 is formed in the receiving space 58.
  • This shoulder 66 has a contact surface 68, which is annular.
  • the abutment surface 68 has the shape of a circular ring.
  • the contact surface 68 is spaced from a bottom 70 which limits the receiving space 58 in the axial direction 18 toward the inner space 20.
  • the bottom 70 is formed over the partition wall 60.
  • the antenna device 64 (see, for example, Figures 7 and 8) is part of a transceiver device 72 which is partially disposed in the first chamber 22.
  • the antenna device 64 is designed as a transceiver, which can emit and receive electromagnetic radiation.
  • the electromagnetic radiation is in the high frequency range (VHF) and in particular in the microwave range.
  • the frequency of the transmitted radiation is preferably in the range between 30 MHz and 300 GHz.
  • the antenna device 64 is then a microwave antenna device.
  • the antenna device 64 includes a
  • the holder 74 is formed, for example, as a flat plate and in particular board. On the holder 74, a plurality of antenna patches are arranged and printed, for example. The patches 76 are formed as flat antennas. A plurality of such patches 76 are connected in series and / or in parallel.
  • the antenna device 64 on the holder 74 has a first portion 78 (first array 78) and a second portion 80 (second array 80).
  • patches 76 are used as transmit antennas at a subarea (78 or 80) and patches are arranged as individual receive antennas at the other subarea 80 or 78.
  • the antenna device 64 has a body 82, which is arranged on the holder 74.
  • the body 82 has a housing 84 in which electronic components of the antenna device 64 are arranged.
  • oscillators, amplifiers and mixers for the receiving part and for the transmitting part of the antenna device 64 are arranged in the housing 84 of the body 82.
  • the holder 74 has both in a width 86 and in a transverse to the width 86 lying length 88 larger outer dimensions than the housing 84.
  • the holder has thereby on its underside 90, which is opposite to the side on which the patches 76 are arranged, regions 92 which project beyond the body 82.
  • the antenna device 74 is arranged in the receiving space 58, wherein the holder 74 is supported with areas 92 on the contact surface 68 and rests on this.
  • the holder 74 is adapted in shape to the receiving space 58 so that when it rests on the contact surface 68, a positive fixation in all directions is achieved transversely to the axial axis 18.
  • An inner side of the wall 44 blocks mobility of the antenna device 64 via the holder 74 in all directions transverse to the axial axis 18.
  • the retainer 74 is rounded at matched regions 92a, 92b (FIG. 7) adapted to an inside of the wall 44.
  • the holder 74 has, for example, a straight boundary line.
  • a gap 96 is formed between the transverse side 94a or 94b and an inner side of the wall 44 (cf., for example, FIG. Through this molding compound in the area below the holder 74 can be brought.
  • the receiving space 58 is closed at a front end 98 by a cover 100.
  • This cover 100 is designed as a radome, which forms an at least approximately closed protective cover for the antenna device 64 and protects it against external mechanical and chemical influences and is well-permeable to the electromagnetic radiation (in particular microwave radiation) used.
  • the lid 100 has an immersion region 102 over which it is immersed in the receiving space 58.
  • the immersion region 102 is, for example, cylindrical.
  • the immersion region 102 is formed by a jacket wall 104, which is in particular cylindrical. This jacket wall 104 is seated on a cover disk 106.
  • the contact surface 108 is annular and in particular annular. It lies against the front end 98 of the wall 44.
  • the jacket wall 104 On the jacket wall 104, one or more lips 110 are arranged, which serve for sealing and frictional fixing. In particular, the lip or lips 110 are formed circumferentially.
  • the jacket wall 104 has a front end 112, which faces away from the cover disk 106.
  • the jacket wall 104 is supported on the front end 112 on an upper side of the holder 74, on which the patches 76 are arranged, wherein a support surface outside the patches 76 is located.
  • a projection of the jacket wall 104 on the holder 74 surrounds the patches 76. These are protected by the jacket wall 104.
  • a small distance which is in the millimeter range. This distance is, as will be explained in more detail below, if it is present, filled with molding material.
  • 112 opposite wings 114a, 114b are arranged on the casing wall 104 at the front end. These protrude beyond a corresponding end face of the jacket wall 104. The wings 114a, 114b are immersed in the spaces 96 between the inside of the wall 44 and the corresponding transverse sides 94a, 94b of the holder 74.
  • the circuit arrangement 24 and the antenna device 64 are connected via a cable device 116.
  • the cable device 116 is designed in particular as a flat cable. This flat cable comprises a plurality of wires, which are fixed relative to each other via a corresponding insulating sheath.
  • contacts 118 are disposed on the underside 90 of the holder 74.
  • the cable device 116 is connected to these contacts 118 in particular by soldering.
  • a region 121 of the cable device 116 is guided along one side of the housing 84.
  • a passage 120 is arranged in the partition 60.
  • the feedthrough 120 is designed as a slot. Through this passage 120, the cable device 116 is performed; The cable device 116 leads from the second chamber 62 to the first chamber 22 through the passage 120 therethrough.
  • the passage 120 with the submerged cable device 116 is sealed.
  • the passage 120 is arranged between the body 82 and an inner side of the wall 44. It is in particular arranged so that, starting from the contacts 118, the cable device 116 can be guided along the housing 84 and can be performed through the bushing 120, without buckling or bending.
  • the receiving space 58 is fluid-tight with respect to the first chamber 22.
  • a molding compound is arranged in interspaces 122 of the second chamber 62 between the antenna device 64, and the inside of the wall 44 and the bottom 70.
  • these spaces 122 are filled with molding compound and completely filled.
  • the molding compound is in particular a casting resin or a rigid foam, which is or which is filled during manufacture.
  • the end 50 of the cap 38 which faces away from the bottom 70, is positioned in the interior 20 of the tubular element 14. At this end 50, a recess 126 is formed. The slot of the passage 120 opens into this recess 126th
  • a receptacle 128 for a first circuit carrier 130 is formed.
  • This receptacle 128 holds a groove 132, which is slit-shaped. In this groove 132, the first circuit substrate 130 can be inserted.
  • the first circuit carrier 130 is designed, in particular, as a flat circuit board, on which corresponding electronic circuit elements are arranged.
  • the receptacle 128 has on the groove 132 on a wall 134, which is particularly flat.
  • the first circuit carrier 130 is applied with a bottom to this wall 134.
  • the first circuit carrier 130 is fixed to the wall 134 with the cap 38.
  • spaced-apart screws 136 are provided (cf., FIG. 3), by way of which the first circuit carrier 130 is screwed to the wall 134 with the cap 38.
  • the cap 38 has recesses 138 associated with the screws 136 at the immersion region 42.
  • a recess 138 is designed such that it can be accessed by a tool (in particular a screwdriver) on a screw 136 in order to secure the screw connection of the first circuit carrier 130 to the screw Wall 134 to perform during manufacture. Through the recess 138, the tool can be dipped through in order to act on a screw 136 at the corresponding fixation area. It can further be provided that a receptacle 140 (see FIG. 5) for the cable device 116 is arranged on the recess 126.
  • the passage 120 is spaced transversely to the axial axis 18 to the groove 132. It is in particular arranged parallel to the groove 132.
  • the receptacle 140 is arranged in particular between the passage 120 and the groove 132.
  • the circuit arrangement 24 further comprises a second circuit carrier 142 which, like the first circuit carrier 130, is positioned in the first chamber 22.
  • the second circuit carrier 142 also includes a flat board.
  • the second circuit carrier 142 is oriented parallel to the first circuit carrier 130.
  • the second circuit carrier 142 is mechanically connected to the first circuit carrier 130 via corresponding pin elements 144a, 144b.
  • the pin elements 144a, 144b also provide an electrical connection.
  • the second circuit carrier 142 is supported at one end on the contact surface 36.
  • the first circuit carrier 130 has a greater length in the axial direction 18 than the second circuit carrier 142.
  • the first circuit carrier 130 projects into an interior of the socket 30.
  • the antenna proximity sensor 10 has a connection element 146 which is seated on the first circuit carrier 130 in the region of the connection piece 30 and is connected to it mechanically and electrically.
  • a connection element 146 which is seated on the first circuit carrier 130 in the region of the connection piece 30 and is connected to it mechanically and electrically.
  • the appropriately provided port 146 can be the
  • Antenna proximity sensor 10 supply with electrical energy and it can be dissipate signals or couple signals.
  • connection element cover 148 is provided (see also FIG. 10), which closes off the tube element 14 at the second end 28.
  • the terminal cover 148 has a cover plate 150, one of which
  • Wall 152 protrudes.
  • the wall 152 is formed in particular cylindrically and set back relative to an outer side of the cover disk 150. It is characterized formed a contact surface 154 which is annular and in particular annular.
  • the terminal cover 148 is made of a metallic material or a plastic material. It can be transparent or LED translucent or opalescent.
  • the wall 152 is immersed in the socket 30, wherein the cover plate 150 is applied via the contact surface 154 at the second end 28 of the tubular element 14.
  • a nozzle 156 is formed, which has a smaller diameter than the cover plate 150.
  • the electrical connection 146 is positioned in the socket 156.
  • a gap or spaces in the interior 20 of the tubular element 14 are filled with molding material and filled in particular.
  • molding material is used for example in PU rigid foam.
  • the corresponding molding compound is introduced, for example, via a funnel 158 (FIG. 1), which is positioned on the nozzle 156.
  • the circuit arrangement 24 is partially arranged on the first circuit carrier 130 and partially on the second circuit carrier 142.
  • the circuit arrangement comprises high-frequency components for the antenna device 64 and, for example, circuit components for the digital signal processing. According to the invention, it is provided that high-frequency components are separated from such digital circuit components. High frequency components are arranged on the first circuit carrier 130 and digital components are arranged on the second circuit carrier 142.
  • circuit elements for controlling the transceiver device 72 are arranged on the first circuit carrier 130 (wherein a part of the transceiver device 72 is then positioned on the first circuit carrier 130). Further are Circuit components for signal processing and an output stage to the first circuit carrier 130 is arranged.
  • An outer side of the tubular element 14 can be provided with an external thread 160 in order to be able to fix the antenna proximity sensor 10 to an application via the tubular element 14 of the housing 12.
  • the antenna proximity sensor 10 is manufactured, for example, as follows: A unit of the cap 38 with the circuit carriers 130 and 142 is manufactured. For this purpose, the combination of the first circuit carrier 130 and the second circuit carrier 142, which are connected to one another, is screwed to the cap 38 on the wall 134. About the recess 138, this screw can be performed in a simple manner with a tool.
  • the cable device 116 is arranged and in particular soldered. It is also possible for the cable device 116 to be pre-assembled fixed to the antenna device 64 and in particular soldered.
  • the cable device 116 is performed either on the basis of the antenna device 64 or starting from the first circuit carrier 130 through the feedthrough 120 and then the soldering takes place on the part which has not yet been fixed. It is advantageous if the pre-assembly of the cable device 116 (the connection) has been made on the antenna device 64, since the region of the connection to the first circuit carrier 130 is more easily accessible through the recess 126.
  • the receiving space 58 with the antenna device 64 disposed therein, which is applied to the contact surface 68, is filled with the molding compound and in particular casting resin. In this molding compound, the lid 100 is then pressed correspondingly positioned and thereby fixed to the cap 38. After curing, the combination of cap 38 with the circuit carriers 130, 142 is pushed from the first end 26 into the tubular element 14.
  • the connection element cover 148 is fixed to the connection piece 30.
  • the antenna proximity sensor 10 of the invention operates as follows:
  • the antenna device 64 emits microwaves via its transmitting part. It also receives reflected microwaves via the receiving part.
  • the transceiver of the antenna device 64 ensures transmission and reception, with corresponding control elements, in particular with their high-frequency components, being arranged on the first circuit carrier 130.
  • Electronic components are disposed on the first circuit carrier 130 and the second circuit carrier 142 in the first chamber 22, which are separated via the partition wall 60 of the second chamber 62. This results in a minimal influence on these circuit components by transmitted and received microwave radiation.
  • the antenna device 64 is arranged protected on the cap 38.
  • the division of the electronic circuit components onto the first circuit carrier 130 and the second circuit carrier 142 and in particular through the division of high-frequency components and of digital signal processing components results in minimized interference.
  • the antenna proximity sensor 10 which is operated in particular with microwave radiation, the approach of objects can be detected.
  • the absolute distance to a measured object can be determined. It can also be speed information and To obtain directional information regarding such a target (targets). Results of high accuracy can be achieved even in harsh environments (which are dirty or damp, for example).
  • the antenna device 64 is optimally protected.
  • the antenna proximity sensor is operated, for example, with an FMCW method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Details Of Aerials (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne un détecteur de proximité à antenne, comprenant un boîtier (12) qui possède un élément tubulaire (14) et un chapeau (38) disposé sur l'élément tubulaire (14), une première chambre (22) formée dans l'élément tubulaire (14), une deuxième chambre (62) formée dans le chapeau (38), une cloison de séparation (60) entre la première chambre (22) et la deuxième chambre (62), un ensemble de circuits (24) monté dans la première chambre (22), et un dispositif émetteur/récepteur (72) doté d'un système d'antenne (64), lequel système d'antenne (64) est positionné dans la deuxième chambre (62).
PCT/EP2014/076491 2013-12-23 2014-12-04 Détecteur de proximité à antenne WO2015096958A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202013105906.4 2013-12-23
DE201320105906 DE202013105906U1 (de) 2013-12-23 2013-12-23 Antennen-Näherungssensor

Publications (2)

Publication Number Publication Date
WO2015096958A2 true WO2015096958A2 (fr) 2015-07-02
WO2015096958A3 WO2015096958A3 (fr) 2016-03-17

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DE (1) DE202013105906U1 (fr)
WO (1) WO2015096958A2 (fr)

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DE102018117145A1 (de) 2018-07-16 2020-01-16 Balluff Gmbh Multifeldzonen-Näherungssensor sowie ein Verfahren zur Messung eines Abstands eines Objekts vom Multifeldzonen-Näherungssensor
DE102021101181B4 (de) 2021-01-21 2022-09-08 Sick Ag Gehäuse für einen induktiven Sensor und ein Verfahren zur Herstellung eines Gehäuses füreinen induktiven Sensor

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DE202013105906U1 (de) 2014-02-25
WO2015096958A3 (fr) 2016-03-17

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