• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A vibration detection unit (68) comprises a housing (66) in which a vibration detector (76) and a digital signal processing circuit (88) connected to a signal output of the vibration detector (76) are disposed , which is connected to a status information output interface (98) of a moving machine member derived from the vibration detector signals (76). In addition, a purely analog signal processing circuit (90) is disposed within the housing (66) and is connected to an analog interface (106) for outputting warning signals derived from the signals of the vibration detector (76) in the case of highlighting a foreign body
    公开号:BE1024826B1
    申请号:E2010/0016
    申请日:2010-01-13
    公开日:2018-07-10
    发明作者:Folker Beck；Thorsten Nowack
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    (73) Holder (s):
    DEERE & COMPANY 61265-8098, MOLINE United States (72) Inventor (s):
    BECK Folker
    66506 MASSWEILER
    Germany
    NOWACK Thorsten 55743 IDAR-OBERSTEIN Germany (54) VIBRATION DETECTOR (57) A vibration detection unit (68) comprises a housing (66) in which are placed a vibration detector (76) and a digital signal processing circuit (88) connected to a signal output of the vibration detector (76), which is connected to an interface (98) for outputting state information of a mobile machine element derived from the signals of the vibration detector (76 ), In addition, a purely analog signal processing circuit (90) is arranged inside the housing (66) and is connected to an analog interface (106) for the emission of warning signals derived from the signals of the vibration detector (76) in the event of the detection of a foreign body.
    BELGIAN INVENTION PATENT
    FPS Economy, SMEs, Middle Classes & Energy
    Publication number: 1024826 Filing number: 2010/0016
    Intellectual Property Office International Classification: G01V 1/00 G01H 1/00 A01D 75/18 Date of issue: 07/10/2018
    The Minister of the Economy,
    Having regard to the Paris Convention of March 20, 1883 for the Protection of Industrial Property;
    Considering the law of March 28, 1984 on patents for invention, article 22, for patent applications introduced before September 22, 2014;
    Given Title 1 “Patents for invention” of Book XI of the Code of Economic Law, article XI.24, for patent applications introduced from September 22, 2014;
    Having regard to the Royal Decree of 2 December 1986 relating to the request, the issue and the maintenance in force of invention patents, article 28;
    Given the patent application received by the Intellectual Property Office on January 13, 2010.
    Whereas for patent applications falling within the scope of Title 1, Book XI of the Code of Economic Law (hereinafter CDE), in accordance with article XI. 19, §4, paragraph 2, of the CDE, if the patent application has been the subject of a search report mentioning a lack of unity of invention within the meaning of the §ler of article XI.19 cited above and in the event that the applicant does not limit or file a divisional application in accordance with the results of the search report, the granted patent will be limited to the claims for which the search report has been drawn up.
    Stopped :
    First article. - It is issued to
    DEERE & COMPANY, One John Deere Place, 61265-8098 MOLINE United States;
    represented by
    OVERATH Philippe, Boulevard Général Wahis 15, 1030, BRUXELLES;
    by KEMMETER François, Boulevard Général Wahis 15, 1030, BRUXELLES;
    POWIS de TENBOSSCHE Roland, Boulevard Général Wahis 15, 1030, BRUXELLES;
    a Belgian invention patent with a duration of 20 years, subject to payment of the annual fees referred to in article XI.48, §1 of the Code of Economic Law, for: VIBRATION DETECTOR.
    INVENTOR (S):
    BECK Folker, Hirthenhohlstrasse 9, 66506, MASSWEILER;
    NOWACK Thorsten, Schielweg 10, 55743, IDAR-OBERSTEIN;
    PRIORITY (S):
    01/21/2009 FROM 102009000351.7;
    DIVISION:
    divided from the basic application: filing date of the basic application:
    Article 2. - This patent is granted without prior examination of the patentability of the invention, without guarantee of the merit of the invention or of the accuracy of the description thereof and at the risk and peril of the applicant (s) ( s).
    Brussels, 07/10/2018, By special delegation:
    BE-2010/0016
    2010/0016
    DESCRIPTION
    Vibration detector
    The invention relates to a vibration detection unit with a housing in which a vibration detector is arranged and a digital signal processing circuit connected to a signal output of the vibration detector, which is connected to a digital output interface. status information of a mobile machine element derived from vibration detector signals.
    State of the art
    For agricultural harvesting machines, there is a danger of picking up annoying foreign bodies. This is particularly true when the crop is taken directly from the ground, for example when a swath is collected using a pick-up or a cutting device is guided at low cutting height above the ground. In order to avoid damage to the harvesting machine, devices for detecting such foreign bodies are known, which detect the ferromagnetic properties of foreign bodies (see
    EP 0 702 248 A2), but are insensitive to foreign bodies
    BE-2010/0016
    2010/0016 non-ferromagnetic. In addition, it has been proposed to mount a microphone inside a pre-pressing roller before a chopper, which is connected to a highlighting device and detects the noise picked up by the microphone during impact of a stone or other foreign body with the pre-pressing roller and triggers, if necessary, a rapid stop of the pre-pressing rollers in order to avoid damage to the chopping device (US 5,092,818 A).
    Document DE 10 100 522 A1 describes a monitoring device for a harvesting machine which is equipped with structural noise sensors, which detect the mechanical vibrations of the driven elements of the harvesting machine and a calculation device, which can detect possibly faulty elements of the harvesting machine using signals from structural noise sensors.
    Document DE 102 006 015 152 A1 describes a structure noise sensor unit which can be mounted in different places of a self-propelled harvesting machine, in order for example to make shock signals available when the counter knife of a chopper comes into contact with the rotary knives of the chopping drum. This structural noise sensor unit can also detect a stone that reaches the chopping drum and trigger a rapid decommissioning. Additional units of structural noise sensors can be assigned to rotating conveyors to detect imbalances. For
    BE-2010/0016
    2010/0016 ri combine harvesters, the structure noise sensor unit can be used as a grain loss sensor. The structure-borne noise sensor unit comprises, in addition to a signal converter, pre-processing electronics which consists of an adjustable amplifier, a programmable digital filter and an adjustable integrator. The integrator is finally connected to a signal output. The elements of the pre-processing electronics are programmable remotely in order to be able to adapt the structural noise sensor unit to its respective purpose of use by sending appropriate configuration data. The processing of the signals inside the electronics of pre-processing is done in a digital way, which on the one hand allows a simple adaptation to different evolutions of the signals which one should expect due to the purpose of use, on the other hand, however, entails relatively long signal travel times, which make it problematic to use the unit of structural noise sensors as a foreign body detector in connection with a rapid stop device.
    Goal
    It is considered that the problem underlying the invention consists in providing an improved vibration detection unit with respect to the state of the art which can be used both for monitoring the state of rotary components of a harvesting machine only for the detection of foreign bodies.
    BE-2010/0016
    2010/0016
    Solution
    This problem is solved according to the invention by the teaching of claim 1, the other claims giving features which improve the solution advantageously.
    A vibration detection unit comprises a housing, in which are arranged a vibration detector and a digital signal processing circuit connected to a signal output of the vibration detector, as well as a purely analog signal processing circuit also connected at the signal output of the vibration detector. The vibration detector detects the vibrations of at least one machine element, for which it can be an actively or passively driven element, rotating or performing another type of movement, for example a reciprocating movement, or a structural element, for example a frame part, to which vibrations of other mobile machine elements and / or their drive parts and / or of a drive motor (in particular an internal combustion engine) are transmitted ). The digital signal processing circuit is connected to a digital interface in order to transmit the state information of the machine element derived from the signals of the vibration detector, in particular to a processing unit. The state information can relate to the state of movement of the machine element, for example its speed of rotation or possible ovalizations of its movement or its bearings or other information, derived from vibrations.
    BE-2010/0016
    2010/0016 rJ recorded, for example at the level of stress on the cutting knives of a chopping device, from which one can in turn derive by integrating over time information on the cutting edge of the cutting knives.
    The analog signal processing circuit is constructed independently of the digital signal processing circuit and connected to an analog interface, in order to give warning signals if necessary, in particular to a control unit of a stop device. fast, in case the vibration detector signals indicate that a foreign object has been collected. The warning signals can alternatively or additionally be given to an operator via an appropriate interface in order to draw his attention to the fact that a foreign body has been detected and in order to give him additional instructions if necessary. example of stopping the advancement and / or the entry conveyor of the harvesting machine or of opening a valve, through which the foreign body can be ejected.
    In this way, the vibration detection unit can be used for different purposes (including monitoring the status of a moving part of the machine and monitoring the harvested crop for the presence of foreign bodies), however offers due to an analog signal processing circuit with sufficiently short signal travel times, so that a quick-stop device can be operated quickly enough, in the event that a foreign object has been
    BE-2010/0016
    2010/0016 “J collected with the harvest and detected by the vibration detector.
    In a preferred embodiment of the invention, the analog signal processing circuit and / or the digital signal processing circuit are remotely programmable via the digital interface, in order to be able to adapt the vibration detection unit optimally at the respective place and purpose of use. In doing so, it is possible to modify the filtration frequencies, the threshold values and similar quantities. Alternatively or additionally, the control unit is connected to a separate input of the analog signal processing circuit, via which parameters of the analog signal processing circuit can be continuously controlled, in particular as a function of the output signals of the analog signal processing circuit. In doing so, the possibility exists in particular of being able to define a threshold value as a function of the current signal level. It is however also conceivable to have the parameters of the analog signal processing circuit checked by the control unit independently of the current signals from the signal analysis, but to make them depend for example on the current bit rate, on the speed of rotation. internal combustion engine or other operating parameters of the harvesting machine. A combination of the two variants is also possible, namely a control of the parameters of the analog signal processing circuit based on the signals of the analog signal processing circuit and the other parameters mentioned. A
    BE-2010/0016
    2010/0016 possibility of analog control of the parameters of the analog signal processing circuit also exists via the digital signal processing circuit, which can cooperate with the analog signal processing circuit via an appropriate or similar interface.
    There is also the possibility of fixing several vibration detectors in the housing, sensitive in different directions. These can be connected via a multiplexer or a selector of your choice with the digital signal processing circuit and the analog signal processing circuit. The multiplexer or selector is preferably controlled by the digital signal processing circuit.
    The present invention is suitable for any harvesting machine, for which the collected crop is transported using an input conveyor, to which the vibration detection unit is assigned. Examples are the chopper, baler and combine harvester. The analog interface of the analog signal processing circuit is preferably connected to a control unit of a quick stop device for stopping an input conveyor of the harvesting machine, so to be able to avoid, by stopping the input conveyor in good time, damage to the harvesting machine in the case of a foreign object introduced. It also prevents the
    BE-2010/0016
    2010/0016 harvest delivered by the harvesting machine is contaminated by the foreign body.
    Example of realization
    The drawings show five embodiments of the invention described in more detail below. The drawings show:
    Figure 1, a side view and a schematic representation of a harvesting machine with a device according to the invention, Figure 2, an exploded representation of a transport roller and a vibration detection unit, Figure 3, a schematic top view of the transport roller and the vibration detection unit, FIG. 4, a diagram of a first embodiment of the signal processing circuits of the vibration detection unit, the FIG. 5, a diagram of a second embodiment of the signal processing circuits of the vibration detection unit,
    BE-2010/0016
    2010/0016 FIG. 6, a diagram of a third embodiment of the signal processing circuits of the vibration detection unit, FIG. 7, a diagram of a fourth embodiment of the signal processing circuits of the vibration detection unit, and FIG. 8, a diagram of a fifth embodiment of the signal processing circuits of the vibration detection unit,
    A harvesting machine 10 shown in FIG. 1 of the self-propelled harvester-chopper type is mounted on a chassis 12, which is supported by front and rear wheels 14 and 16. The harvesting machine 10 is controlled from a cab. conductor 18, from which a crop collection device 20 can be seen in the form of a collector. The crop collected on the ground using the harvesting device 20, for example grass or the like, is brought to a chopping drum 22 equipped with chopping knives 48, which chop it into small pieces and the pours into a transport device 24. The crop leaves the harvesting machine 10 to a trailer rolling next to it via a rotary extraction well 26. Between the chopping drum 22 and the transport device 24 is a secondary chopping device 28, through which the crop to be transported is brought tangentially to the transport device 24.
    BE-2010/0016
    2010/0016
    Between the crop pickup device 20 and the chopping drum 22, the crop is transported by an input conveyor with lower transport rollers 30, 32 and upper transport rollers 34, 36, which are mounted at the inside of an inlet casing 50. The transport rollers 30 to 36 are also called pre-pressing rollers, since the upper transport rollers 34, 36 are pressed by the force of springs against the lower transport rollers 30, 32, so that the crop is precompressed between the transport rollers 30 to 36 and can more easily be cut. The chopping knives 48 distributed around the periphery of the chopping drum 22 cooperate with a counter knife 38 to chop the crop.
    FIG. 2 shows an exploded representation of the lower front transport roller 30. It comprises a cylinder casing 40 of circular section, at the periphery of which are distributed coaches 42 which extend axially. On the front faces, the cylinder casing 40 is provided with radial support discs 44. The support disc 44 drawn on the right in FIG. 2 can be connected in its center to a circular flange 46 using bolts. The flange 46 is rigidly connected to a central shaft 54, which is thus coupled in rotation lock to the corresponding cylinder casing 40. The shaft 54 in turn is supported so as to allow rotation in a bearing support of straight 56 which in turn is fixed to the chassis 12. The shaft 54 (and therefore the transport roller 30) can be rotated via an appropriate drive (not shown) by its front face
    BE-2010/0016
    2010/0016 profiled outside the bearing support 56. A flange 52 drawn on the left in FIG. 2 is screwed to the adjacent support disc 44 (not visible) and provided with a rotary central bearing 88. A shaft 58 arranged in the interior space of the cylinder casing 40 extends through the bearing of the flange 52 and a left bearing support 56. The shaft 58 does not rotate with the transport roller 30. The shaft 58 is supported at its right end in a bearing 60 so as to allow rotation relative to the shaft 54 and to the flange 46. In the shaft 58 is provided at the left end an axial bore which opens into a slot 62 to bring a cable 64 through the shaft 58 inside the cylinder casing 40. About in the middle of the shaft 58 is fixed a housing 66 which houses a vibration detection unit 68 (see FIG. 3) .
    FIG. 3 shows a schematic elevation view of the vibration detection unit 68. The vibration detection unit 68 fixed to the axis 58 comprises a mass 74 hooked by springs 72 to a support 78, the position of which can be detected by a position sensor 76 which is fixed to the support 78 and operates for example in a capacitive or inductive manner. When the shaft 58 and the support 78 connected thereto in a manner that transmits the vibrations are accelerated in the axial direction of the transport roller 30, the position sensor 76 is also accelerated, while the mass 74 remains first stationary in because of its inertia and does not start moving until late due to the suspension of the springs 72. The relative movement between the support 78 and the mass 74 is highlighted by the
    BE-2010/0016
    2010/0016 position sensor 76. In the embodiment shown, the vibration detection unit 68 essentially or only measures the vibrations propagating in the axial direction of the transport roller 30, the springs 72 extending in the axial direction. The sensitive direction of the vibration detection unit 68 therefore extends axially to the transport roller 30. Inside the housing 66, adjacent to the position sensor 76, there is also an electronic signal processing 80, from which two lines 82, 84 leave. It will also be noted that the vibration detection unit 68 could also be mounted outside of the transport roller 30, for example on one of the bearing supports 56 at another location of the harvesting machine 10, sufficiently close to the bearings 60, 88. The vibration detection unit 68 can be sensitive in the axial direction of the transport roller 30, as described above, or in the radial direction relative to the transport roller 30.
    The vibration detector 68 is only shown schematically in FIG. 3. Concretely, any commercially available vibration detector can be used, which operates for example using a piezoelectric crystal or in a capacitive or inductive.
    FIG. 4 shows a diagram of a first embodiment of electronic signal processing 80. The position sensor 76 supplies a signal conditioner 86 with its output signals, which
    BE-2010/0016 are amplified and, if necessary, bandpass filtered by the latter. At the output of the signal conditioner 86, the electronic signal processing 80 is divided into a digital signal processing circuit 88 drawn at the top and a purely analog signal processing circuit 90 drawn at the bottom.
    2010/0016
    The digital signal processing circuit 88 comprises an analog / digital converter 92, the analog input of which is connected to the output of the signal conditioner 86 and the digital output of which is connected to a microcontroller 94, which could also be replaced by a microprocessor (not shown). The microcontroller 94 is connected to a memory 96 and a digital interface 98, the output of which is in turn connected to the cable 82, which represents a digital bus line. The interface 98 can be suitable for the connection of a bus made as CAN, Ethernet, USB or wireless (WLAN, Bluetooth, Zigbee etc .; the cable 82 is then superfluous) and also serve for the power supply of The signal processing electronics 80. The digital signal processing circuit 88 collects and analyzes the vibrations detected by the position sensor 76, in particular to derive therefrom parameters which indicate the state of the transport roller 30 and its bearings 60, 88. For this purpose, reference is made to the publications of documents DE 10 100 522 Al and DE 102 006 015 152 Al, which are used by reference in the present documents. This status information derived from the signals of the vibration detector is transmitted via the interface 98 to a processing unit 100, which can receive the status information of the units.
    BE-2010/0016
    2010/0016 additional vibration detection 68 which are distributed on the harvesting machine 10. The evaluation unit 100 can (re) program the microcontroller 94 via the cable 82 and the interface 98, in order to be able to adapt the circuit digital signal processing 88 to the respective tasks and purposes of use.
    The analog signal processing circuit 90 includes an analog signal processing circuit
    102 (for example an amplification and / or filtering circuit), the output of which is connected to an analog interface 106, the output of which is in turn connected to the cable 84. The analog interface 106 is also connected to a interface 104, to which a memory 108 is connected. Via the analog interface 106 and the cable 84, the analog signal processing circuit 90 is connected to a control unit 110 which stops the drive of the transport rollers 30 to 36 with a very short delay if the signals from the analog interface 106 indicate that a hard foreign body, for example a stone, has struck the transport roller 30. The memory 108 can be formed as an EEPROM. In this is deposited configuration information, how the signals of the signal processing circuit 102 must be processed by the control unit 110, for example from the point of view of the amplitudes, shapes and frequencies of signals to be expected. In doing so, one can use a standard such as IEEE
    1451.4 or the Transducer Electronic Data Sheet. The interface 104 transmits this information to the control unit 110 via the analog interface 106 at the request of the
    BE-2010/0016
    2010/0016 vJ command 110. A dashed line indicates that the microcontroller 94 could also be able to interrogate memory 108. By using memory 108, the signal processing electronics 80 can be programmed during of its production or by placing the memory 108 according to its place of later use, so that there is no additional configuration work necessary later to adapt the analog signal processing circuit 90 to its respective task.
    If a stone or other foreign body strikes the transport roller 30, advantage is taken of the fact that the foreign body generates upon impact against the transport roller 30 mechanical vibrations which propagate via the casing of the cylinder 40, the support discs 44, flanges 46 and 52, bearings 60 and 88, shaft 58 and housing 66 to support 78. These vibrations are processed by the analog signal processing circuit 102 and detected by the unit 110. The transport rollers 30 to 36 can be stopped using a stop pawl, which serves to mechanically block the drive of the transport rollers 30 to 36, or by cutting or reversing. the direction of flow of the hydraulic flow through a hydraulic motor driving the transport rollers 30 to 36, as described in the document DE 102 008 040 357 A1, the publication of which is repeated by reference in the present document. Simultaneously, a display device 112 can give a corresponding indication to the operator concerning the foreign body.
    BE-2010/0016
    2010/0016
    FIG. 5 schematically shows a second embodiment of electronic signal processing 80. The elements identical to those of the first embodiment bear the same reference numbers. As an essential difference from the digital signal processing circuit 88, it should be noted that the microcontroller 94 is connected to an additional memory 122. In addition, the microcontroller 94 is connected to an additional interface 114, by means of which it can be reprogrammed. The interface 114 can be connected to a socket 116 in the housing 66, so that the microcontroller 94 can be reprogrammed on site using an appropriate programming device, which is connected to the socket 116. The reprogramming can however also be done wirelessly or via the cable 82 and the interface 98. In addition, the microcontroller 94 can supply the optional memory 108 with configuration information, which the microcontroller 94 receives from the processing unit 100 via the interface 114 or via socket 106.
    For the analog signal processing circuit 90, it should be noted as an essential difference with the first embodiment that two branches are provided, the upper branch of which is shown with continuous lines and the lower branch with lines of dashed lines. The memory 108 is optional, so that no possibility of programming or modification of the analog signal processing circuit 90 should be provided. The parameters of the analog signal processing circuit 90, which is
    BE-2010/0016
    2010/0016
    y) here consisting of an analog filter 114 (generally designed as a bandpass filter), of an analysis of the signals 116 and of the analog interface 106, are therefore fixed in advance, although they can be if necessary be adjusted on site using potentiometers, regulating capacitors or the like. As shown, it is however possible to take data from memory 108 in order to be able to modify, with the aid of these, the characteristics of the analysis of signals 116. For these characteristics, it may be amplification, upper and / or lower limit frequencies, threshold values of a comparator or any other characteristics. On this subject, reference is made to the publication of document DE 102 006 015 152 A1, which is taken up by reference in the present document, although here we are in the presence of purely analog signal processing.
    In addition or as a variant, it is however possible to provide a possibility of modification in the analog signal processing circuit 90, as shown in the lower branch, represented by dashed lines, of the analog signal processing circuit 90. There is carried out via a line 118 a feedback from the control unit 110 to the analysis of the signals 116 ′, which may contain for example the current amplitude of the signal or other values derived from the current signals. Using the current amplitude of the signal, it is possible, for example, to set a threshold value of a comparator in the analysis of signals 116 ′ to a value which may be some 10% greater than the current amplitude of the signal. signal. Signals on line 118 can
    BE-2010/0016
    2010/0016 however as a variant or in addition be independent of the current signals from the analysis of the signals and depend for example on the current flow rate, the rotation speed of the internal combustion engine or other operating parameters of the harvesting machine 10.
    FIG. 6 schematically shows a third embodiment of electronic signal processing 80. The elements identical to those of the second embodiment bear the same reference numbers. As an essential difference from the digital signal processing circuit 88, it should be noted that the microcontroller 94 is not looped directly in the signal processing, but contains an FPGA 120 (Field Programmable Gate Array, i.e. a grid device programmable via an electric field) disposed between the output of the analog / digital converter 92 and the input of the digital interface 98, which is controlled by the microcontroller 94 and performs signal analysis. The analog signal processing circuit 90 is identical to that of FIG. 5.
    For the embodiment according to FIG. 7, it should be noted as an essential difference with respect to the embodiment of FIG. 5 that in total three position sensors 76, 76 ′, 76 and respective corresponding units of vibration detection 68 are present, which are preferably sensitive in mutually orthogonal respectively. The position sensors 76, 76 ', 76 are respectively connected to
    BE-2010/0016
    2010/0016 fj corresponding conditioners of signals 86, 86 ', 86, to the output of which multiplexers or selectors 124 are connected. The multiplexer or selector 124 has two outputs, one of which is respectively connected to the digital signal processing circuit 88 and one to the analog signal processing circuit 90. The multiplexer or selector 124 is preferably controlled by the microcontroller 94. By the provision of vibration detection units 68 sensitive in three directions and of the multiplexer or selector 124, the possibility exists for this embodiment of treating in an analogical manner only the vibrations detected in one direction, for example the vibrations propagating in the direction axial of the pre-pressing roller 30, in order to detect with minimal delay any foreign bodies possibly contained in the crop and to trigger a rapid stop of the pre-pressing rollers 30-36, while the vibrations in the two directions orthogonal to it ci, i.e. in the radial direction with respect to the axis of the rou the pre-pressing water 30, are processed by the digital signal processing circuit, in order to be able to detect bearing damage or ovalizations in the course of the pre-pressing roller 30.
    The embodiment according to FIG. 8 corresponds to that of FIG. 7, however the digital processing of the signals is carried out in a similar manner to the embodiment of FIG. 6 by an FPGA 120.
    2010/0016
    权利要求:
    Claims (12)
    [1]
    1. Vibration detection unit (68) for a harvesting machine (10) with a housing (66) in which are arranged at least one vibration detector (76) and a digital digital signal processing circuit (88) connected to a signal output of the vibration detector (76), which is connected to a digital interface (98) for output of state information of a machine element in motion or in rotation derived from the signals of the vibration detector ( 76), characterized in that a purely analog signal processing circuit (90), independent of the digital signal processing circuit (88), is arranged inside the housing (66) and is connected to an analog interface (1Θ6, 106 ') for the emission of warning signals derived from the signals of the vibration detector (76) in the case of the detection of a foreign body, in that at the same time, an input of the analog processing circuit (90) and an input of the digital signal processing circuit (88) are connected to a signal output of the vibration detector (76) or can be connected via a multiplexer or a selector (124), and in that the analog processing circuit (90) processes the signals from the vibration detector (76) and gives via the analog interface (106, 106 ') warning signals to a control unit (110) for a device for rapidly stopping an input conveyor ( 30-36), in case the signals from the vibration detector (76) indicate that these vibrations are produced by the impact of a foreign body.
    2010/0016
    [2]
    2. Vibration detection unit (68) according to claim 1, characterized in that the digital interface (98) is connected or can be connected to a processing unit (1ΘΘ) for the exploitation of the state information.
    [3]
    3. Vibration detection unit (68) according to one of claims 1 to 2, characterized in that the state information relates to the state of movement of the machine element in rotation or in movement or of its bearings or others, to information derived from the vibrations detected.
    [4]
    4. vibration detection unit (68) according to one of claims 1 to 3, characterized in that the analog signal processing circuit (90) and / or the digital signal processing circuit (88) can be or are programmed remotely via the digital interface (98).
    [5]
    5. Vibration detection unit (68) according to one of claims 1 to 4, characterized in that the control unit (110) is connected to a separate input of the analog signal processing circuit (90), via which of the parameters of the analog signal processing circuit (90) can be controlled.
    [6]
    6. vibration detection unit (68) according to claim 5, characterized in that the control unit (110) can continuously control parameters
    2010/0016 of the analog signal processing circuit via the separate input of the analog signal processing circuit (90) according to output signals from the analog signal processing circuit (90).
    [7]
    7. Vibration detection unit (68) according to one of the preceding claims, characterized in that several vibration detectors (76), sensitive in different directions, are arranged in the housing (66).
    [8]
    8. vibration detection unit (68) according to claim 7, characterized in that the various vibration detectors (76) can be connected via a multiplexer or a selector (124) optionally with the digital signal processing circuit ( 88) and the analog signal processing circuit (90).
    [9]
    9. Vibration detection unit (68) according to claim 8, characterized in that the multiplexer or the selector (124) can be controlled by the digital signal processing circuit (88).
    [10]
    10. Vibration detection unit (68) according to one of claims 7 to 9, characterized in that one of the vibration detectors (76) detects vibrations propagating in the axial direction of the machine element and is connected to the analog signal processing circuit (90), while at least a second vibration detector (76 ′, 76) is sensitive in the radial direction
    2010/0016 of the machine element and is connected to the digital signal processing circuit (88).
    [11]
    11. Vibration detection unit (68) according to one of claims 1 to 10, characterized in that the analog interface (106, 106 ') is connected to a memory (108), in which configuration information is filed, how the output signals from the analog interface (106, 106 ') are to be processed by the control unit (110), and that the configuration information can be transferred from the memory (108) to the control unit (110) via the analog interface (106).
    [12]
    12. Harvesting machine (10), in particular picker-chopper, with a vibration detection unit (68) according to one of the preceding claims which is assigned to an input conveyor (30 - 36).
    BE-2010/0016
    2010/0016 fJ
    类似技术:
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    同族专利:
    公开号 | 公开日
    EA201000009A1|2010-08-30|
    EA018276B1|2013-06-28|
    DE102009000351A1|2010-07-29|
    DE102009000351B4|2011-05-19|
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    法律状态:
    2018-09-05| FG| Patent granted|Effective date: 20180710 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE200910000351|DE102009000351B4|2009-01-21|2009-01-21|Vibration pick-up unit|
    DE102009000351.7|2009-01-21|
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