Monitoring device
11586232 · 2023-02-21
Assignee
Inventors
Cpc classification
Y02E60/10
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
G01K1/14
PHYSICS
International classification
G01K1/14
PHYSICS
G01H1/00
PHYSICS
Abstract
A wireless and cellular vibration monitoring device (2) comprising a connection structure (6) suitable for attaching the monitoring device (2) to equipment to be monitored is disclosed. The monitoring device (2) comprises a temperature sensor (8) and a vibration sensor (10) configured to remotely monitor vibration and temperature transferred to the monitoring device (2) via the connection structure (6). The device comprises an integrated satellite-based radio-navigation system for location detection. The monitoring device (2) comprises a metal base (4) comprising a body portion (56) comprising a threaded portion (6) constituting the connection structure (6). The threaded portion (6) comprises male threads and protrudes from the body portion (56) of the base (4). The temperature sensor (8) is thermally connected to the body portion (56) of the base (4).
Claims
1. A wireless and cellular vibration monitoring device comprising a connection structure suitable for attaching the monitoring device to equipment to be monitored, wherein the monitoring device comprises a temperature sensor and a vibration sensor configured to remotely monitor vibration and temperature transferred to the monitoring device via the connection structure, wherein the device comprises an integrated satellite-based radio-navigation system for location detection, wherein the monitoring device comprises a base comprising a body portion and a first threaded portion constituting the connection structure, wherein the first threaded portion comprises threads and protrudes from the body portion of the base, wherein the temperature sensor is thermally connected to the body portion of the base, and wherein a shell is configured to seal against the base and hermetically enclose a space inside the shell so that no air can leave or enter the monitoring device.
2. The monitoring device according to claim 1, wherein the first threaded portion of the base comprises male threads.
3. The monitoring device according to claim 1, wherein the base comprises a wall extending along a longitudinal axis of the body portion of the base and a contact surface provided on a structure protruding from an inside surface of the wall of the base.
4. The monitoring device according to claim 3, wherein the contact surface extends perpendicular to the longitudinal axis of the body portion, wherein the temperature sensor comprises a plate-shaped contact area that is brought into thermal contact with the contact surface.
5. The monitoring device according to claim 4, wherein a contact area of the temperature sensor is attached to the contact surface by means of a thermally conductive gel or thermally conductive adhesive.
6. The monitoring device according to claim 1, wherein the monitoring device is battery driven and comprises a battery assembly or battery housing configured to receive a plurality of cylindrical commercially available batteries, wherein the battery assembly is enclosed within the shell.
7. The monitoring device according to claim 6, wherein the battery assembly or battery housing comprises an upright wall portion allowing an upright mounting of the batteries.
8. The monitoring device according to claim 6, wherein the monitoring device comprises a locking ring arranged to lockingly fix the shell to the base.
9. The monitoring device according to claim 8, wherein the monitoring device comprises one or more ring sealing gaskets arranged to seal between the shell and a second threaded portion of the base.
10. The monitoring device according to claim 8, wherein the shell comprises a cylindrical portion provided with a fastening structure, wherein the locking ring is provided with a fastening structure arranged and shaped to fit the fastening structure of the cylindrical portion.
11. The monitoring device according to claim 10, wherein the fastening structure of the cylindrical portion is a male fastening structure and the fastening structure of the-locking ring is a female fastening structure arranged and shaped to fit the male fastening structure of the cylindrical portion.
12. The monitoring device according to claim 1, wherein the monitoring device comprises a printed circuit board, wherein the vibration sensor and the temperature sensor are integrated with the printed circuit board.
13. The monitoring device according to claim 12, wherein the temperature sensor is arranged in such a position of the printed circuit board that the temperature sensor is brought into direct contact with the base.
14. The monitoring device according to claim 1, wherein a width of the first threaded portion is smaller than the width of the body portion.
15. The monitoring device according to claim 1, wherein the body portion comprises a flange.
16. The monitoring device according to claim 15, wherein a second threaded portion protrudes from the flange, wherein the second threaded portion has a width that is smaller than a width of the body portion and larger than a width of the first threaded portion.
17. The monitoring device according to claim 1, wherein the body portion comprises a first protruding portion provided with a hole.
18. The monitoring device according to claim 17, wherein the body portion comprises a second protruding portion provided with a hole.
19. The monitoring device according to claim 1, wherein a central bore is provided in the first threaded portion.
20. The monitoring device according to claim 1, wherein one or more antennas are completely enclosed within the shell.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The invention will become more fully understood from the detailed description given herein below. The accompanying drawings are given by way of illustration only, and thus, they are not limitative of the present invention. In the accompanying drawings:
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DETAILED DESCRIPTION OF THE INVENTION
(24) Referring now in detail to the drawings for the purpose of illustrating preferred embodiments of the present invention, a monitoring device 2 of the present invention is illustrated in
(25)
(26) The monitoring device 2 is also configured to function as a stand-alone system configured to wirelessly transmit data to the cloud-based structure 20 via a cellular network integrated in the monitoring device 2.
(27) Accordingly, the monitoring device 2 is configured to measure vibration and temperature and optionally other relevant parameters and store the measured data and further transmit the data or accumulated data: a) Directly to the cloud-based structure 20 via any suitable wireless broadband communication standard for mobile devices. In one embodiment, the Long-Term Evolution (LTE) communication standard is applied or b) To the gateway 12 via local area network (LAN) (e.g. at a frequency of 900 MHz) or by a cellular connection.
(28) The monitoring device 2 is configured to be operated in various modes. In one embodiment, the monitoring device 2 is powered in a battery-operated mode by means of one or more replaceable batteries arranged in an integrated battery assembly.
(29) In one embodiment, the monitoring device 2 is powered by three AA type lithium cell batteries.
(30) In another embodiment, the monitoring device 2 is powered in an external power mode, in which the monitoring device 2 is powered by a wired connection to an electrical energy source (e.g. the main or an electrical connection at the equipment, at which the monitoring device 2 is mounted to monitor vibration and temperature).
(31) When the monitoring device 2 is used as a stand-alone cellular connection communication wirelessly with the cloud-based structure 20, the monitoring device 2 can be operated in one of the following modes:
(32) 1) A low-power battery operated mode, in which the device is sleeping most of the time and wakes up with a predefined frequency (e.g. every 15 minutes) to sample and log the monitored data which is uploaded in predefined upload times.
(33) 2) An external power operated mode, in which the monitoring device 2 is connected to an external power source by means of a wired connection. In one embodiment, the external power source is a direct current (DC) power source providing a voltage in the range 12-24 Volts.
(34) If an external power source is available, it is possible to maintain the monitoring device 2 in a state of operation, in which a cellular connection of the monitoring device 2 is maintained online so that all data records are uploaded after logging (dynamic uploads).
(35) In one embodiment, the monitoring device 2 is operated in a mode, in which the monitoring device 2 communicates with the gateway 12 either by a LAN or cellular connection. In this mode, the gateway is always turned on and connected to the cloud-based structure 20.
(36) In one embodiment, the monitoring device is battery operated, wherein power consumption is minimized by operating the monitoring device 2 in a mode, in which the monitoring device 2 is sleeping most of the time and wakes up according to a predefined schedule (e.g. every 15 seconds) to send keep-alive data to the gateway 12 and sample and log detected data according to a predefined schedule (e.g. every 15 minutes) and sending data to the gateway 12. The gateway 12 uploads the data records to the cloud-based structure 20 as soon as the gateway 12 has received the data. In one embodiment, the monitoring device provides no offline logging.
(37) When an external power source is available and connected to the monitoring device 2, the monitoring device 2 will be operated in a mode, in which the monitoring device 2 is maintained connected to the gateway 12 and never goes to sleep. Data sample and logging may be carried out in the same way in this mode as when the monitoring device 2 is battery operated.
(38) The monitoring device 2 comprises a metal base 4 comprising a cylindrical body portion and a threaded portion 6 protruding therefrom. The threaded portion 6 comprises a male thread and is configured to be screwed into a corresponding female thread of a receiving structure of the equipment that the monitoring device 2 is intended to remotely monitor.
(39) The monitoring device 2 comprises a shell 34 enclosing a plurality of main components of the monitoring device 2 (see
(40)
(41) The base 4 comprises a cylindrical body portion 56 having a longitudinal axis that extends parallel to the Z axis.
(42) In one embodiment, the body portion 56 is box-shaped.
(43) In another embodiment, the body portion 56 has a cross-sectional area (when cut in a plane parallel to the X axis and the Y axis) formed as a simple polygon, preferably a regular convex polygon.
(44) The body portion 4 is provided with a flange 28 and a wall 30 extending from the flange 28. The wall 30 is provided with a threaded portion 54 constituting a male thread configured to receive a corresponding female thread of a shell (see
(45) A plurality of recesses 26 are provided along the rim of the wall 30. These recesses 26 are configured to receive corresponding male engagement structures as shown in
(46) A support structure provided with a contact surface 22 protruding from the inside of the wall 30. The contact surface 22 has a planar top side. However, a large opening 18 and a smaller hole 24 are provided in the contact surface 22.
(47) In one embodiment, the monitoring device comprises a temperature sensor (not shown) extending at least partly through the opening 18.
(48) In one embodiment, the monitoring device comprises a temperature sensor (not shown) extending at least partly through the hole 24.
(49) In one embodiment, the monitoring device comprises a temperature sensor (not shown) attached to or integrated in the support structure 22.
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(51) The locking ring 32 is provided with a male fastening structure 52 arranged and shaped to fit the female fastening structure 50 of the cylindrical portion 36. Accordingly, the male fastening structure 52 of the locking ring 32 will engage with the corresponding female fastening structure 50 of the cylindrical portion 36 when the locking ring 32 is pressed in place hereby surrounding the cylindrical portion 36 of the shell 34. The use of the locking ring 32 provides a simple, reliable and easy way of securing the shell 34 to the base of the monitoring device.
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(53) The support plate 42 is provided with a plurality of male engagement structures 44 protruding from the rim of the support plate. The male engagement structures 44 are distributed and shaped in order to fit into the recesses 26 provided along the rim of the wall 30 of the base 4 shown in
(54) The wall portion 40 comprises a planar surface facing away from the batteries 28. When the battery assembly 58 is mounted in a monitoring device according to the invention, the battery assembly 58 leaves plenty of room for a printed circuit board and other essential components such as an antenna.
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(57) A threaded portion 54 has a width D.sub.2 that is smaller than the width D.sub.3 of the body portion 56 and larger than the width D.sub.1 of the threaded portion 6 that protrudes from the body portion 56. The threaded portion 54 comprises a male thread configured to receive a correspond female thread of a shell corresponding to the one shown in
(58) The body portion 56 has a height H.sub.2 that is slightly larger than the height H.sub.1 of the threaded portion 54. The threaded portion 6 has a height H.sub.3 that is larger than the height H.sub.2 of the body portion 56. Accordingly, in a preferred embodiment, one or more of the following relations are fulfilled:
D.sub.3>D.sub.2>D.sub.1 A)
H.sub.3>H.sub.2>H.sub.1 B)
(59) In one embodiment, one or more of the following relations are fulfilled:
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(61) In one embodiment, one or more of the following relations are fulfilled:
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(63) In one embodiment, one or more of the following relations are fulfilled:
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(66) Each of the monitoring devices 2 illustrated in
(67) Each of the monitoring devices 2 comprises a shell 34 having a slightly different geometry. However, the function and basic structure of each of these shells 34 correspond to the one shown and explained with reference to
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(69) A temperature sensor 8 is arranged in direct contact with the body portion 56 of the base 4. Hereby, the temperature sensor 8 can detect the accurate temperature of the base 4 in a reliable manner. Moreover, temperature changes of a media or structure being in thermal contact with the body portion 56 of the base 4 can be detected in a fast, reliable and accurate manner.
(70) The temperature sensor 8 is arranged centrally at the top surface of the body portion 56 of the base 4. The temperature sensor 8 is electrically connected to a printed circuit board 46 that is electrically connected to an antenna 60. Moreover, a vibration sensor 10 is provided as an integrated part of the printed circuit board 46. In one embodiment, the vibration sensor 10 is an accelerometer. In one embodiment, the vibration sensor 10 is a multi-axis accelerometer. In a preferred embodiment, the vibration sensor 10 is a three-axis accelerometer.
(71) A shell 34 encloses the components 8, 46, 60 of the monitoring device 2. In one embodiment, the shell 34 is configured to hermetically enclose and seal the monitoring device 2 so that the space inside the shell 34 is so tightly closed that no air can leave or enter it.
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(74) The monitoring device 2 comprises a shell 34 enclosing a plurality of main components of the monitoring device 2.
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(76) In a preferred embodiment, the temperature sensor 8 is arranged in such a position at the substrate that the temperature sensor 8 can be brought into direct or indirect (through an intermediate media such a thermally conductive gel or thermally conductive adhesive) contact with a contact surface such as the one shown in
(77) On the other side (shown in
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(79) The second threaded portion 54′ of the body portion 56 is configured and shaped to engagingly receive a corresponding female thread of the shell 34 shown in
(80) The base 4 comprises a threaded portion 6 protruding from the body portion 56 of the base 4. A central bore 72 is provided in the threaded portion 6. Obviously, the width D.sub.4 of the bore 72 is smaller than the width D.sub.5 of the threaded portion 6. It can be see that: D.sub.7>D.sub.6>D.sub.5>D.sub.4.
(81) The body portion comprises a first protruding portion provided with a hole 74 and a second protruding portion provided with a hole 76. The holes 74, 76 are arranged and configured to receive a male engagement structure, such as a screw. Hereby, it is possible to fix the electrical components of the monitoring device firmly to the body portion 56 of the base 4.
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(83) The battery housing 86 comprises an opening 96 configured to receive a screw. Hereby, the screw can be screwed into one of the holes 74, 76 shown in
(84) The base 4 corresponds to the one shown and explained with reference to
(85) The base 4 has a longitudinal axis Z, lateral axis Y and a frontal axis X. It can be see that the longitudinal axes of the batteries 38 extend parallel with the longitudinal axis Z of the base 4. Hereby, the batteries 38 will be arranged in an upright orientation when the base 4 is mounted in a horizontally extending structure.
(86) The body portion 56 comprises a first threaded portion 54 and a second threaded portion 54′. The second threaded portion 54′ is provided at the outside surface of a wall 30 of the body portion 56. Keyways 70 are provided in the rim of the wall 30. The keyways 70 are arranged and configured to receive corresponding engagement members 98 of the shell (see
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(88) The base 4 corresponds to the one shown in
(89) The base 4 also comprises a contact surface 80 provided on a structure protruding from the inside surface of the wall 30 of the base 4. In a preferred embodiment, the contact surface 80 is provided on a structure protruding from the proximal portion of the base 4. The body portion 56 comprises engagement structures 68 shaped as flats to be engagingly received by a wrench.
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(91) A locking ring 32 (corresponding to the one shown in
(92) It can be seen that the locking ring 32 comprises a female thread configured to be screwed onto the first threaded portion 54 of the base 4.
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(94) The monitoring device 2 further comprises a support structure 90 configured to be attached to the battery housing 86 in a configuration, in which the printed circuit board 46 is sandwiched between the battery housing 86 and the support structure 90. The battery housing 86 comprises receiving portions 88 configured to receive and maintain a battery 38 in a fixed position relative to the printed circuit board 46.
(95) A plate member 92 protrudes from a bottom portion of the battery housing 86. The plate member 92 is slidingly arranged and thus configured to be pushed in place so that it does not protrude from the side wall of the battery portion 86.
LIST OF REFERENCE NUMERALS
(96) 2 Monitoring device 4 Base 6 Threaded portion 8 Temperature sensor 10 Vibration sensor 12 Gateway 14 Satellite-based radio navigation system 16 Outer surface 18 Opening 20 Cloud-based structure 22 Contact surface 24 Hole 26 Recess 28 Flange 30 Wall 32 Locking ring 34 Shell 36 Cylindrical portion 38 Battery 40 Wall portion 42 Support plate 44 Male engagement structure 46 Printed circuit board 48 Plate member (e.g. insulating material) 50 Female fastening structure 52 Male fastening structure 54, 54′ Threaded portion 56 Body portion 58 Battery assembly 60 Antenna 60′ Near Field Communication (NFC) antenna 60″ Cellular antenna 62 Cellular module 64 Subscriber identity module (SIM) card holder 68 Engagement structure 70 Keyway 72 Bore 74 Hole 76 Hole 78 Inside surface 80 Contact surface 82 Protruding portion 84 Protruding portion 86 Battery housing 88 Receiving portion 90 Support structure 92 Plate member 94 Sealing gasket 96 Opening 98 Engagement member X, Y, Z Axis H.sub.1, H.sub.2, H.sub.3 Height D.sub.1, D.sub.2, D.sub.3 Width D.sub.4, D.sub.5, D.sub.6, D.sub.7 Width