WO2020094114A1 - 一种用于物体检测的动作机构及物体检测装置 - Google Patents

一种用于物体检测的动作机构及物体检测装置 Download PDF

Info

Publication number
WO2020094114A1
WO2020094114A1 PCT/CN2019/116516 CN2019116516W WO2020094114A1 WO 2020094114 A1 WO2020094114 A1 WO 2020094114A1 CN 2019116516 W CN2019116516 W CN 2019116516W WO 2020094114 A1 WO2020094114 A1 WO 2020094114A1
Authority
WO
WIPO (PCT)
Prior art keywords
swing
link
swing rod
electromagnetic device
present
Prior art date
Application number
PCT/CN2019/116516
Other languages
English (en)
French (fr)
Inventor
陈益华
Original Assignee
湖南信量电子有限公司
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 湖南信量电子有限公司 filed Critical 湖南信量电子有限公司
Priority to JP2021546441A priority Critical patent/JP7302128B2/ja
Priority to EP19881787.6A priority patent/EP3879241B1/en
Publication of WO2020094114A1 publication Critical patent/WO2020094114A1/zh
Priority to US17/229,895 priority patent/US20210257140A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/14—Pivoting armatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring

Definitions

  • the invention relates to the field of level sensors, in particular to an action mechanism and an object detection device for object detection.
  • the Chinese patent with authorization announcement number CN102155968B proposes an “electromagnetic knocking object detection device” which includes a magnetic swing lever and an electromagnet arranged on one side of the magnetic swing lever, and controls the electromagnet to drive the magnetic swing lever to swing and An electronic module that amplifies, processes and delays the signal of the magnetic swing rod collected by the electromagnet, wherein: the magnetic swing rod is suspended by a hanging device on the side of the main body casing; An electromagnet is arranged in the main body casing, and the electromagnet is composed of an electromagnet iron core and an electromagnet coil.
  • the electromagnetic knocking object detection device has the following problems during use: 1. The installation verticality is high, and if it is inclined, it will cause failure. 2.
  • the magnetic pendulum and the electromagnet shell have a knocking action, which generates noise and increases wear and tear, and reduces the explosion-proof safety level; 3. Because the permanent magnet pendulum directly contacts the tested material, the material with strong adhesion is detected It is easy to cause the magnetic swing rod and the electromagnet to stick together and swing failure; 4. Detection of ferromagnetic impurities such as iron ore because the magnetic swing rod adsorbs too much iron scraps and other impurities affect the swing and malfunction.
  • the object of the present invention is to provide an object detection device to improve the working stability of the object detection device.
  • Another object of the present invention is to provide an object detection device to reduce the wear of the object detection device during the detection process.
  • the present invention provides an action mechanism for object detection, including: a main body, an electromagnetic device fixedly disposed on the main body, and a swing lever swingably connected to the main body;
  • connection position of the swing rod and the main body is opposite to the iron core of the electromagnetic device, and the upper end of the swing rod of the swing rod is opposite to and spaced from the electromagnetic device;
  • the upper end of the swing rod is provided with a permanent magnet, and the magnetic pole direction of the permanent magnet intersects with the magnetic pole direction of the electromagnetic device.
  • the main body includes a first mounting portion for mounting the electromagnetic device, and a second mounting portion for mounting the swing lever;
  • the first mounting portion is a cylindrical body sealed at one end, the electromagnetic device is disposed inside the first mounting portion, and the swing lever is located outside the first mounting portion.
  • a support shaft is provided on the second mounting portion, and a first through hole penetrating the body is provided on the swing rod, and the swing rod passes through the first through hole and the support Shaft connection.
  • the support shaft is an arc-shaped shaft.
  • the second mounting part is further provided with a flexible protective cover
  • the side wall of the second mounting part and the flexible protective cover form a receiving cavity, the permanent magnet, the upper end of the swing rod and the support shaft are all located in the receiving cavity, the swing rod and The opposite end of the upper end of the swing rod is located outside the accommodating cavity.
  • the second mounting portion is a cylindrical body, and one end thereof is provided with a first clamping structure for mounting the flexible protective cover;
  • the flexible protective cover has a second through hole through which the swing rod passes.
  • the swing lever is provided with a first link
  • the first connecting rod is detachably connected to the swing rod, and the connection position of the swing rod and the first connecting rod clamps the flexible protective cover;
  • At least one of the swing lever and the first link is made of a diamagnetic material.
  • the swing lever is further provided with a second link
  • the second link and the first link are coaxially connected to each other through an elastic member.
  • At least one of the swing link, the first link, and the second link uses a diamagnetic material.
  • the present invention provides an object detection device, including: an operating mechanism, and an electronic module electrically connected to the electromagnetic device in the operating mechanism.
  • the permanent magnet on the swing bar is opposed to and spaced from the electromagnetic device, so that the swing bar and the electromagnetic device are always in non-contact during the operation of the present invention, thus avoiding the generation of the swing bar
  • the knocking action with other components not only has no knocking noise but also reduces wear and tear, and improves the explosion-proof safety level of the present invention.
  • it has high stability and long life. Since the swing rod is suspended under the electromagnetic device, adjust the gap between the two, and adjust the ampere turns of the coil of the electromagnetic device and the end area of the iron core and the magnetic induction intensity of the permanent magnet, the electromagnetic device can adjust the swing rod
  • the driving force is not only convenient and fast, but also cost-saving.
  • the present invention by placing the permanent magnet at the end of the swing bar of the present invention, the present invention can be tilted by the attractive force between the permanent magnet and the iron core without energizing It can still be detected even in a horizontal state, reducing the requirements for installation verticality, and can work reliably even if it can be tilted to a horizontal position, so that the invention can be applied to work in different installation positions, the scope of use is wider, and the applicability is more Strong.
  • the electromagnetic driving force generated between the permanent magnet and the permanent magnet not only does the thrust of the same sex repel but also the attraction of the opposite sex attract, so that the electromagnetic driving force is doubled, the size of the electromagnetic device 12 can be greatly reduced, the material is saved, and the production, transportation and storage costs are reduced.
  • the power consumption is also greatly reduced, and a two-wire product with low power consumption can be produced. When installed and used, the wiring cost can be reduced and the energy can be saved.
  • the swing rod swing causes the magnetic flux in the coil to change not only in the magnitude of the magnetic flux but also in the direction, the signal of the swing rod swing collected after the electromagnetic device is powered off is also multiplied, which further improves the detection accuracy of the present invention And higher sensitivity.
  • the permanent magnet 1311 on the swing rod can be isolated from the object to be detected by using a flexible protective cover, and therefore the swing rod, the first connecting rod and the second connecting rod can be made of diamagnetic materials. Therefore, the invention can detect ferromagnetic materials and materials with large adhesion.
  • the hindrance to the normal flow of the measured material is reduced, which reduces the formation of local voids due to the arch of the detected material, and also reduces The influence of the measured material remaining on the object detection device of the present invention improves the reliability of signal output.
  • FIG. 1 schematically shows a front view of an object detection device according to an embodiment of the present invention
  • FIG. 2 schematically shows a side view of an object detection device according to an embodiment of the present invention
  • FIG. 3 schematically shows a structural diagram of an electronic module according to an embodiment of the present invention
  • FIG. 4 schematically shows an oblique installation diagram of an object detection device according to an embodiment of the present invention
  • FIG. 5 schematically shows a horizontal installation diagram of an object detection device according to an embodiment of the present invention
  • FIG. 6 schematically shows a front view of an object detection device according to another embodiment of the present invention.
  • FIG. 7 schematically shows a front view of an object detection device according to another embodiment of the present invention.
  • FIG. 8 schematically shows a front view of an object detection device according to another embodiment of the present invention.
  • an action mechanism for object detection of the present invention includes a main body 11, an electromagnetic device 12 and a swing lever 13.
  • the electromagnetic device 12 is fixed on the main body 11, and the swing lever 13 and the main body 11 are movably connected to each other.
  • the swing lever 13 is swingably connected to the main body 11, that is, it can swing on the main body 11.
  • the connecting position of the swing rod 13 and the main body 11 is opposite to the iron core 121 of the electromagnetic device 12, and the upper end 131 of the swing rod 13 is opposite to the electromagnetic device 12 and arranged at intervals. As shown in FIG.
  • the position where the swing bar 13 is connected to the main body 11 is directly below the iron core 121 of the electromagnetic device 12, so that the upper end 131 of the swing bar can be connected to the iron core 121 Relatively, of course, the connection position of the swing rod 13 and the main body 11 can also be changed, so that the upper end 131 of the swing rod can be opposed to the iron core 121.
  • the upper end 131 of the swing rod is provided with a permanent magnet 1311, and the magnetic pole direction of the permanent magnet 1311 intersects with the magnetic pole direction of the electromagnetic device 12, that is, as shown in FIG. 1, the two poles of the permanent magnet 1311 (N-level and S-level ) The distribution is not parallel to the bipolar distribution of the electromagnetic device 12 in the energized state.
  • the main body 11 includes a first mounting portion 111 for mounting the electromagnetic device 12 and a second mounting portion 112 for mounting the swing lever 13.
  • the first mounting portion 111 is a cylindrical body with one end sealed
  • the electromagnetic device 12 is provided inside the first mounting portion 111
  • the swing lever 13 is located outside the first mounting portion 111. That is, the electromagnetic device 12 and the swing lever 13 are separated by the side wall of the first mounting portion 111.
  • a support shaft 1121 is provided on the second mounting portion 112.
  • the swing rod 13 is provided with a first through hole 132 penetrating its body, and the swing rod 13 is swingably connected to the support shaft 1121 through the first through hole 132.
  • the first through hole 132 is located below the upper end 131 of the swing lever.
  • the support shaft 1121 is an arc-shaped shaft.
  • the second mounting portion 112 is further provided with a flexible protective cover 1122.
  • the side wall of the second mounting portion 112 and the flexible protective cover 1122 constitute a receiving cavity
  • the permanent magnet 1311, the upper end 131 of the swing rod and the support shaft 1121 are located in the receiving cavity
  • the swing rod 13 and the swing rod The opposite end of the upper end 131 is located outside the receiving cavity.
  • the second mounting portion 112 is a cylindrical body, and one end thereof is provided with a first clamping structure 1123 for mounting the flexible protective cover 1122.
  • the first clamping structure 1123 includes a first clamping member 1123a and a second clamping member 1123b.
  • the first clamping member 1123a and the second mounting portion 112 are fixedly connected to each other, and the second clamping member 1123b and the first clamping member 1123a are fixedly connected to each other.
  • the flexible protective cover 1122 is located between the first clamping member 1123a and the second clamping member 1123b.
  • the flexible protective cover 1122 can be fixedly clamped through the second clamping piece 1123b, the flexible protective cover 1122 and the first clamping piece 1123a through the connecting pieces (such as rivets, screws), etc., and the connecting piece passes through the flexible protective cover 1122 prevents the flexible protective cover 1122 from sliding in the first clamping structure 1123, and ensures the stability of the position of the flexible protective cover 1122, thereby ensuring that the second mounting portion 112 has a good seal.
  • the flexible protective cover 1122 has a second through hole 1122a through which the swing lever 13 passes. It should be pointed out that, according to the needs of actual working conditions, the flexible protective cover 1122 can be optionally set.
  • the swing lever 13 is provided with a first link 133.
  • the end of the swing bar 13 opposite to the upper end 131 of the swing bar passes through the second through hole 1122a on the flexible protective cover 1122, so that the first link 133 and the swing bar 13 can Disconnect.
  • the first link 133 and the swing rod 13 are connected by screws.
  • the end of the first connecting rod 133 is provided with a threaded connecting sleeve, and the swing rod 13 is provided with threads matching the threaded connecting sleeve.
  • pin holes are also provided at positions where the swing rod 13 and the first link 133 are connected to each other.
  • a cotter pin or rivet is used to pass through the swing rod The pin hole at the position where the 13 is connected to the first link 133 can prevent the swing lever 13 and the first link 133 from loosening.
  • one or more of the swing lever 13 and the first link 133 use a diamagnetic material.
  • the end of the first connecting rod 133 away from the swing rod 13 is further provided with a blocking piece 133b.
  • the blocking piece 133b By providing the blocking piece 133b, it is beneficial to increase the contact area with the detection object, thereby effectively improving the detection object of the present invention Sensitivity and accuracy.
  • the object detection device of the present invention includes: an action mechanism 1 and an electronic module 2.
  • the electronic module 2 is located in the first mounting portion 111 of the main body 11, and the electronic module 2 and the electromagnetic device 12 are electrically connected to each other.
  • the electronic module 2 and the coil 122 on the electromagnetic device 12 are electrically connected to each other.
  • the electronic module 2 includes a power supply circuit 21, a pulse generating circuit 22, a pulse driving circuit 23, a signal amplifying circuit 24, a signal processing circuit 25, and a signal delay output circuit 26.
  • the pulse generating circuit 22 is connected to the pulse driving circuit 23, the pulse driving circuit 23 is connected to the coil 122 on the electromagnetic device 12, the coil 122 is connected to the signal amplifying circuit 24, and the signal amplifying circuit 24 is connected to the signal processing circuit 25 Connection, the signal processing circuit 25 is connected to the signal delay output circuit 26, the power circuit 21 is connected to the above circuits, the lead line is connected to the signal delay output circuit 26 and the power circuit 21, the electromagnetic device 12 has two aspects of driving and signal acquisition In the case of no material blocking, the swing rod 13 will be suspended under the iron core 121 of the electromagnetic device 12.
  • a pulse signal is generated by the pulse generating circuit 22 and sent to the pulse driving circuit 23, and then a periodic pulse current flows through the coil 122, so that the electromagnetic device 12 generates a pulsed electromagnetic field.
  • the swing direction of the swing lever 13 can be adjusted. Since the swing rod 13 is suspended under the electromagnetic device 12, by adjusting the gap between the two, and adjusting the coil ampere turns of the coil 122 and the end area of the iron core 121 and the magnetic induction intensity of the permanent magnet 1311, the electromagnetic can be adjusted The driving force of the device 12 to the swing lever 13. Since the electromagnetic device 12 is fixed in the first mounting portion 11, the swing rod 13 can swing freely in all directions.
  • the permanent magnet 1311 installed on the upper end 131 of the swing rod during the swing rod 13 causes the magnetic flux passing through the coil 122 to change Furthermore, due to the electromagnetic induction, a voltage signal corresponding to the swing of the swing bar 13 is generated.
  • the polarity, amplitude, width, phase, frequency and other parameters of the induced voltage signal correspond to the swing direction, speed, amplitude, frequency, etc. of the swing bar 13. Because the damping force of the swing rod 13 in gas, liquid, and solid media is obviously different, the damping in the gas medium is minimal and the induced voltage signal is the strongest, and the damping in the liquid medium is centered.
  • the signal amplifying circuit 24 amplifies the voltage signal induced from the coil 122 and inputs it to the signal processing circuit 25.
  • the signal processing circuit 25 will determine the solid medium or liquid medium according to the obvious difference in the amplitude or phase of the voltage signal induced by the electromagnetic device 12 when the swing rod 13 swings in three types of media: gas, liquid, and solid. Whether there is or not, and input the position signal of the object to the signal delay output circuit 26, after a certain time delay, it is led out through the lead line for instructions, alarms, automatic control, etc.
  • the swing bar 13 when the electromagnetic device 12 is not energized, the swing bar 13 is subjected to its own gravity and the suction force of the permanent magnet 1311 and the iron core 121, so that the swing bar 13 is in a balanced state under the action of two forces.
  • the suction force of the swing lever 13 and the iron core 121 and the gravity of the swing lever 13 are in a straight line and pass through the swing fulcrum (that is, the swing lever 13 is a position where the second mounting portion 12 is swingably connected).
  • FIG. 1 when the object detection device of the present invention is in a vertically downward state, the suction force of the swing lever 13 and the iron core 121 and the gravity of the swing lever 13 are in a straight line and pass through the swing fulcrum (that is, the swing lever 13 is a position where the second mounting portion 12 is swingably connected).
  • the swing lever 13 when the object detection device of the present invention is installed obliquely, the swing lever 13 will maintain the corresponding inclination angle due to the suction force of the permanent magnet 1311 and the iron core 121. If the electromagnetic device 12 is energized, the electromagnetic force This equilibrium state will be broken, so that the swing rod 13 swings away from this equilibrium state. When the electromagnetic device 12 is powered off, the swing rod 13 will return to the previous equilibrium state. Adjust the position of the center of gravity of the swing rod 13 of the present invention, and the permanent Even when the magnetic field strength of the magnet 1311 is placed horizontally, the swing bar 13 can be placed in a horizontal equilibrium state (see FIG. 5).
  • the permanent magnet 1311 at the end of the swing rod 13 of the present invention, and the permanent magnet 1311 and the swing rod 13 are coaxially arranged, it is possible to pass between the permanent magnet 1311 and the iron core 121 without energizing
  • the attractiveness can enable the invention to be detected even in a tilted or even horizontal state, so that the invention can be applied to work in different installation positions, so that the invention has a wider use range and stronger applicability.
  • the main body 11 includes a first mounting portion 111 and a second mounting portion 112.
  • the second mounting portion 112 and the first mounting portion 111 are arranged perpendicularly to each other, wherein the arrangement of each component between each other is consistent with the foregoing embodiment, and will not be repeated here.
  • the object detection device of the present invention can be installed horizontally and horizontally, which is suitable for being installed on the vertical or inclined surface of the side wall of the storage bin, reducing the installation requirements of the present invention and ensuring the accuracy of the detection results of the present invention .
  • the main body 11 includes a first mounting portion 111 and a second mounting portion 112.
  • the second mounting portion 112 is an open and arc-shaped side wall, and the support shaft 1121 is fixedly disposed on the second mounting portion 112.
  • an extension arm is provided on one side of the upper end 131 of the swing bar 13 so that the entire swing bar 13 is L-shaped.
  • the permanent magnet 1311 is disposed on the extension arm on the side of the upper end 131 of the swing lever.
  • the first through hole 132 on the swing rod 13 is connected to the support shaft 1121, and the connection position is opposite to the electromagnetic device 12, the permanent magnet 1311 is also located between the electromagnetic device 12 and the support shaft 1121, so that the permanent magnet 1311 and the electromagnetic device 12
  • the iron core 121 is relatively arranged, thereby ensuring the good detection effect of the present invention.
  • the position where the swing bar 13 is connected to the main body 11 is opposite to the iron core 121 of the electromagnetic device 12 on the right side of the iron core 121, so that the permanent magnet 1311 can be opposed to the iron core 121
  • the connecting position of the swing rod 13 and the main body 11 can also be changed, so that the permanent magnet 1311 can be opposed to the iron core 121.
  • the first link 133 provided on the swing lever 13 is integrated with the swing lever 13, and of course, it may be detachable.
  • the second mounting portion 112 is open, it can selectively provide the flexible protective cover 1122 as needed.
  • the arrangement of the remaining components is the same as that of the previous embodiment, and will not be repeated here.
  • the object detection device of the present invention can be installed horizontally and horizontally, which is suitable for being installed on the vertical or inclined surface of the side wall of the storage bin, reducing the installation requirements of the present invention and ensuring the accuracy of the detection results of the present invention .
  • the swing lever 13 is further provided with a second link 134.
  • the second link 134 and the first link 133 are coaxially connected to each other through the elastic member 135.
  • an elastic member 135 is provided between the connection position of the second link 134 and the first link 133.
  • the second link A flexible connection is formed between the connecting position of the rod 134 and the first link 133, so that the second link 134 can be elastically deformed when subjected to excessive impact of the material to be measured or subjected to excessive side pressure of the material to be measured, without causing Since the permanent deformation occurs and affects the reliability of the detection, the working stability of the present invention is ensured.
  • the blocking piece 133b is provided at the end of the second link 134 away from the first link 133. By providing the blocking piece 133b, it is beneficial to increase the contact area with the detected object, thereby effectively improving the detection of the present invention Sensitivity and accuracy of objects.
  • one or more of the swing link 13, the first link 133, and the second link 134 use a diamagnetic material. Since the swing rod 13 of the present invention is provided with a permanent magnet 1311, during the detection process, if the detected object has magnetism or contains magnetic impurities, it is easy to be adsorbed on the swing rod 13, the first connecting rod 133 and the second of the present invention The connecting rod 134 seriously affects the detection accuracy of the present invention. Therefore, the adoption of diamagnetic materials prevents the magnetic particles from adsorbing on the swing rod 13, the first connecting rod 133, and the second connecting rod 134, thereby ensuring the detection of the present invention Precision.
  • the permanent magnet 1311 on the swing rod 13 is opposed to and spaced from the electromagnetic device 12 so that the swing rod 12 and the electromagnetic device are not in contact during the operation of the present invention, thus avoiding the generation of the swing rod 12 and the knocking action of other components, so that there is no knocking noise and the wear is reduced, and the explosion-proof safety level of the present invention is improved. Since the swing rod 13 is suspended under the electromagnetic device 12, by adjusting the gap between the two, and adjusting the coil ampere turns of the coil 122 and the end area of the iron core 121 and the magnetic induction intensity of the permanent magnet 1311, the electromagnetic can be adjusted The driving force of the device 12 on the swing rod 13 is not only convenient and fast, but also saves costs.
  • the present invention by providing the permanent magnet 1311 at the end of the swing rod 13 of the present invention, the present invention can be tilted by the attractive force between the permanent magnet 1311 and the iron core 121 without energizing It can still be detected even in a horizontal state, reducing the requirements for installation verticality, and can work reliably even if it can be tilted to a horizontal position, so that the invention can be applied to work in different installation positions, the use range is wider, and the applicability is more Strong.
  • the magnetic pole direction of the permanent magnet 1311 intersects with the magnetic pole direction of the electromagnetic device 12, after the electromagnetic device 12 is energized, since only one end of the iron core 121 is opposed to the permanent magnet 1311, the electromagnetic driving force generated thereby There is not only the same repulsive thrust but also the attractive attraction of the opposite sex, so that the electromagnetic driving force is doubled, the size of the electromagnetic device 12 can be greatly reduced, the material is saved, and the production, transportation and storage costs are reduced. At the same time, the power consumption is greatly reduced, and micro-power consumption of two-wire products can be produced. When installed and used, the wiring cost can be reduced and the energy can be saved.
  • the magnetic flux in the coil 122 changes not only in the magnitude of the magnetic flux but also in the direction. Therefore, the signal that the swing rod 13 swings after the electromagnetic device 12 is powered off is also multiplied, which further increases the cost
  • the invention has higher detection accuracy and sensitivity.
  • the invention can detect ferromagnetic materials (such as iron, cobalt, nickel and other materials) and materials with large adhesion.
  • the object detection device of the present invention since the object detection device of the present invention has only the swing rod 13 in contact with the material to be measured, the obstruction to the normal flow of the material to be measured is reduced, and the formation of local voids due to the formation of bridges by the material to be detected is reduced. It also reduces the influence of the tested material on the object detection device of the present invention, and improves the reliability of signal output.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

一种用于物体检测的动作机构及物体检测装置，其中动作机构，包括：主体（11），固定设置在主体（11）上的电磁装置（12），与主体（11）摆动连接的摆杆（13）；摆杆（13）与主体（11）相连接位置与电磁装置（12）的铁芯相对设置，且摆杆（13）的摆杆上端（131）与电磁装置（12）相对且间隔设置；摆杆上端（131）设有永磁体（1311），永磁体（1311）的磁极方向与电磁装置（12）的磁极方向相交设置。通过将摆杆（13）上的永磁体（1311）与电磁装置（12）相对且间隔设置，使在工作过程中摆杆（13）与电磁装置（12）始终为不接触的，因此避免了产生摆杆（13）与其它组件的敲击动作，从而既没有敲击噪音又减少了磨损，提高了防爆安全等级。同时，其稳定性高，寿命长。

Description

一种用于物体检测的动作机构及物体检测装置
本申请要求于2018年11月09日提交中国专利局、申请号为201811332855.9，申请名称为“一种用于物体检测的动作机构及物体检测装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及物位传感器领域，尤其涉及一种用于物体检测的动作机构及物体检测装置。
背景技术
在工业生产中，很多的贮料仓要求测量料位，检测出空仓或者满仓，目前常用的物体检测装置主要有阻旋式，杠杆拨动式、音叉式、电容式、射频导纳式。使用这些种类物体检测装置检测物料的料位，通常具有寿命低，可靠性差，而且检测效果不准确的弊端。
例如，授权公告号为CN102155968B的中国专利，提出了一种“电磁推敲式物体检测装置”其包括磁性摆杆和设置在磁性摆杆一侧的电磁铁，及控制电磁铁驱动磁性摆杆摆动并将电磁铁采集到的磁性摆杆摆动的信号进行放大、处理并延时输出的电子模块，其中：所述的磁性摆杆由一吊挂装置将磁性摆杆吊设在主体外壳的一侧；主体外壳内设置电磁铁，电磁铁由电磁铁铁芯和电磁铁线圈组成。这种电磁推敲式物体检测装置，在使用过程中存在以下问题：1、安装垂直度要求高，若发生倾斜则会导致失灵。2、磁性摆锤与电磁铁外壳有敲击动作，既产生噪音又增加了磨损，还降低了防爆安全等级；3、由于永磁体摆杆与被检测物料直接接触，检测粘附性强的物料时就容易造成磁性摆杆与电磁铁粘附在一起而摆动失灵；4、检测含铁磁性的杂质如铁矿石等因磁性摆杆吸附上过多的铁屑等杂质影响摆动而失灵。
发明内容
本发明的目的在于提供一种物体检测装置，提高物体检测装置的工作稳定性。
本发明的另一个目的在于提供一种物体检测装置，减小物体检测装置在检测过程中的磨损。
为实现上述发明目的，本发明提供一种用于物体检测的动作机构，包括：主体，固定设置在所述主体上的电磁装置，与所述主体摆动连接的摆杆；
所述摆杆与所述主体相连接位置与所述电磁装置的铁芯相对设置，且所述摆杆的摆杆上端与所述电磁装置相对且间隔设置；
所述摆杆上端设有永磁体，所述永磁体的磁极方向与所述电磁装置的磁极方向相交设置。
根据本发明的一个方面，所述主体包括用于安装所述电磁装置的第一安装部分，用于安装所述摆杆的第二安装部分；
所述第一安装部分为一端密封的筒状体，所述电磁装置设置于所述第一安装部分内侧，所述摆杆位于所述第一安装部分的外侧。
根据本发明的一个方面，所述第二安装部分上设置有支撑轴，所述摆杆上设置有贯穿其本体的第一通孔，所述摆杆通过所述第一通孔与所述支撑轴摆动连接。
根据本发明的一个方面，所述支撑轴为弧形轴。
根据本发明的一个方面，所述第二安装部分还设置有柔性保护罩；
所述第二安装部分的侧壁和所述柔性保护罩构成一容纳空腔，所述永磁体、所述摆杆上端和所述支撑轴均位于所述容纳空腔内，所述摆杆与所述摆杆上端相对的一端位于所述容纳空腔外。
根据本发明的一个方面，所述第二安装部分为筒状体，其一端设置有用于安装所述柔性保护罩的第一夹紧结构；
所述柔性保护罩具有供所述摆杆穿过的第二通孔。
根据本发明的一个方面，所述摆杆设置有第一连杆；
所述第一连杆与所述摆杆可拆卸地连接，且所述摆杆与所述第一连杆连接位置将所述柔性保护罩夹紧；
根据本发明的一个方面，所述摆杆、所述第一连杆中至少一个采用抗 磁性材料。
根据本发明的一个方面，所述摆杆还设置有第二连杆；
所述第二连杆与所述第一连杆通过弹性件相互同轴的连接。
根据本发明的一个方面，所述摆杆、所述第一连杆和所述第二连杆中的至少一个采用抗磁性材料。
为实现上述发明目的，本发明提供一种物体检测装置，包括：动作机构，以及与所述动作机构中的电磁装置相互电连接的电子模块。
根据本发明的一种方案，通过将摆杆上的永磁体与电磁装置相对且间隔设置，从而使本发明在工作过程中，摆杆与电磁装置始终为不接触的，因此避免了产生摆杆与其它组件的敲击动作，从而既没有敲击噪音又减少了磨损，提高了本发明的防爆安全等级。同时，其稳定性高，寿命长。由于摆杆悬吊在电磁装置的下方，调整二者之间的间隙，和调整电磁装置的线圈的安匝数与铁芯的端面积以及永磁体的磁感应强度，就可调整电磁装置对摆杆的驱动力，不仅方便快捷，而且节约成本。
根据本发明的一种方案，通过将永磁体设置在本发明的摆杆的端部，从而在不通电的情况下，能够通过永磁体与铁芯之间的吸引力即可以使本发明在倾斜甚至水平状态下依然能够进行检测，降低了安装垂直度的要求，甚至于能倾斜到水平位置都能可靠工作，使本发明能够应用到不同的安装位置下工作，使用范围更广，适用性更强。
根据本发明的一种方案，由于永磁体的磁极方向与电磁装置的磁极方向相交设置，因此电磁装置通电后由于铁芯只有一端与永磁体相对，进而其产生的电磁驱动力与永磁体之间不但有同性相斥的推力还有异性相吸的吸引力，从而使得电磁驱动力成倍提高，就可大幅缩小电磁装置12的体积，节省了材料，降低了生产、运输及保管成本，同时功耗也大为降低，就可生产出微功耗的二线制产品，安装使用时就可减少布线成本，节约能源。另外，因为摆杆摆动使得线圈中的磁通不但有磁通量大小的变化还有方向的变化，所以电磁装置断电后采集到的摆杆摆动的信号也是成倍增长，进而使本发明的检测精度和灵敏度更高。
根据本发明的一种方案，通过采用柔性保护罩能将摆杆上的永磁体 1311和被检测物隔离，并且因此摆杆、第一连杆和第二连杆等部件可采用抗磁性材料，从而使本发明可以检测铁磁性的物料与粘附力大的物料。
根据本发明的一种方案，由于本发明的物体检测装置体积减小了，因此减小了对被测物料正常流动的阻碍，也就减少了被检测物料结拱而形成局部空洞，还减少了被测物料在本发明的物体检测装置上残留的影响，提高了信号输出的可靠性。
附图说明
图1示意性表示根据本发明的一种实施方式的物体检测装置的主视图；
图2示意性表示根据本发明的一种实施方式的物体检测装置的侧视图；
图3示意性表示根据本发明的一种实施方式的电子模块的结构图；
图4示意性表示根据本发明的一种实施方式物体检测装置倾斜安装图；
图5示意性表示根据本发明的一种实施方式物体检测装置水平安装图；
图6示意性表示根据本发明的另一种实施方式物体检测装置主视图；
图7示意性表示根据本发明的另一种实施方式物体检测装置主视图；
图8示意性表示根据本发明的另一种实施方式物体检测装置主视图。
具体实施方式
为了更清楚地说明本发明实施方式或现有技术中的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
在针对本发明的实施方式进行描述时，术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”所表达的方位或位置关系是基于相关附图所示的方位或位置关系，其仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此上述术语不能理解为对本发明的限制。
下面结合附图和具体实施方式对本发明作详细地描述，实施方式不能在此一一赘述，但本发明的实施方式并不因此限定于以下实施方式。
结合图1和图2所示，根据本发明的一种实施方式，本发明的一种用于物体检测的动作机构，包括：主体11、电磁装置12和摆杆13。在本实施方式中，电磁装置12固定设置在主体11上，摆杆13与主体11相互活动连接。在本实施方式中，摆杆13与主体11摆动连接，即其可以在主体11上摆动。在本实施方式中，摆杆13与主体11相连接位置与电磁装置12的铁芯121相对设置，且摆杆13的摆杆上端131与电磁装置12相对且间隔设置。参见图1所示，在本实施方式中，在摆杆13与主体11相连接位置与电磁装置12的铁芯121相对的位于铁芯121的正下方，使得摆杆上端131能够与铁芯121相对，当然摆杆13与主体11相连接位置也是可以改变的，保证摆杆上端131能够与铁芯121相对即可。在本实施方式中，摆杆上端131设有永磁体1311，永磁体1311的磁极方向与电磁装置12的磁极方向相交设置，即如图1所示，永磁体1311的两极(N级和S级)分布与电磁装置12在通电状态下的两极分布不是平行的。
结合图1和图2所示，根据本发明的一种实施方式，主体11包括用于安装电磁装置12的第一安装部分111和用于安装摆杆13的第二安装部分112。在本实施方式中，第一安装部分111为一端密封的筒状体，电磁装置12设置于第一安装部分111内侧，摆杆13位于第一安装部分111的外侧。即电磁装置12和摆杆13被第一安装部分111的侧壁隔开。通过将电磁装置12设置在密封的第一安装部分111中提高了本发明的使用安全性，其防爆性更高。
结合图1和图2所示，根据本发明的一种实施方式，第二安装部分112上设置有支撑轴1121。在本实施方式中，摆杆13上设置有贯穿其本体的第一通孔132，摆杆13通过第一通孔132与支撑轴1121摆动连接。在本实施方式中，第一通孔132位于摆杆上端131的下方。在本实施方式中，支撑轴1121为弧形轴。通过将支撑轴1121设置为弧形轴从而能够保证本发明的摆杆13在支撑轴1121上实现全方位的摆动，相应的也可以调整支撑轴1121的直径小于第一通孔132的孔径，能够使摆杆13的摆动更加灵活。同时，通过将支撑轴1121设置为弧形轴还能够保证在不受外力作用时，摆杆13始终位于支撑轴1121的中间位置，保证在自由状态下摆杆13上的 永磁体1311与电磁装置12的铁芯121保持相对。进而能够在对电磁装置12通电时，摆杆13能够及时响应。
结合图1和图2所示，根据本发明的一种实施方式，第二安装部分112还设置有柔性保护罩1122。在本实施方式中，第二安装部分112的侧壁和柔性保护罩1122构成一容纳空腔，永磁体1311、摆杆上端131和支撑轴1121均位于容纳空腔内，摆杆13与摆杆上端131相对的一端位于容纳空腔外。在本实施方式中，第二安装部分112为筒状体，其一端设置有用于安装柔性保护罩1122的第一夹紧结构1123。在本实施方式中，第一夹紧结构1123包括第一夹紧件1123a和第二夹紧件1123b。其中，第一夹紧件1123a与第二安装部分112相互固定连接，第二夹紧件1123b与第一夹紧件1123a相互固定连接。柔性保护罩1122位于第一夹紧件1123a和第二夹紧件1123b之间。通过连接件(如铆钉、螺钉)等依次穿过第二夹紧件1123b、柔性保护罩1122和第一夹紧件1123a即可将柔性保护罩1122固定夹紧，而且连接件穿过柔性保护罩1122避免了柔性保护罩1122在第一夹紧结构1123中滑动，保证了柔性保护罩1122位置的稳定，从而保证了第二安装部分112具有良好的密封性。在本实施方式中，柔性保护罩1122具有供摆杆13穿过的第二通孔1122a。需要指出的是，根据实际工况的需要，柔性保护罩1122可选择的进行设置。
结合图1和图2所示，根据本发明的一种实施方式，摆杆13设置有第一连杆133。在本实施方式中，摆杆13与摆杆上端131相对的一端(即摆杆下端)穿过柔性保护罩1122上的第二通孔1122a，从而实现第一连杆133与摆杆13的可拆卸连接。在本实施方式中，第一连杆133与摆杆13采用螺纹连接。在第一连杆133的端部设置有螺纹连接套，摆杆13上设置有与螺纹连接套相配合的螺纹，因此，在摆杆13与第一连杆133相互旋合连接后，在摆杆13与第一连杆133的连接位置将柔性保护罩1122夹紧，从而保证了连接位置的密封性，保证了柔性保护罩1122的密封效果。在本实施方式中，在摆杆13与第一连杆133相互连接的位置还分别设置有销孔，当摆杆13与第一连杆133旋合后，采用开口销或铆钉穿过摆杆13与第一连杆133连接位置的销孔即可防止摆杆13与第一连杆133的松动。在本实施 方式中，摆杆13、第一连杆133中的一个或多个采用抗磁性材料。在本实施方式中，第一连杆133远离摆杆13的一端还设置有挡片133b，通过设置挡片133b，从而有利于增大与检测物体的接触面积，从而有效提高了本发明检测物体时的灵敏度和精度。
结合图1和图2所示，根据本发明的一种实施方式，本发明的物体检测装置，包括：动作机构1和电子模块2。在本实施方式中，电子模块2位于主体11的第一安装部分111内，电子模块2与电磁装置12相互电连接。在本实施方式中，电子模块2与电磁装置12上的线圈122相互电连接。
如图3所示，根据本发明的一种实施方式，电子模块2包括电源电路21、脉冲产生电路22、脉冲驱动电路23、信号放大电路24、信号处理电路25、信号延时输出电路26。在本实施方式中，脉冲产生电路22与脉冲驱动电路23相连，脉冲驱动电路23与电磁装置12上的线圈122相连，线圈122与信号放大电路24相连，信号放大电路24与信号处理电路25相连接，信号处理电路25与信号延时输出电路26相连，电源电路21与上述各电路都相连，引出线与信号延时输出电路26和电源电路21相连，电磁装置12具有驱动与信号采集二方面的功能，在无物料阻挡的情况下摆杆13会悬吊在电磁装置12的铁芯121下方。通电后，先由脉冲产生电路22产生脉冲信号并输送到脉冲驱动电路23后控制在线圈122中流过周期性的脉冲电流，使电磁装置12产生脉冲电磁场。调整电磁装置12的电极方向与电磁场的磁极方向，就能调整摆杆13的摆动方向。由于摆杆13悬吊在电磁装置12的下方，通过调整二者之间的间隙，和调整线圈122的线圈安匝数与铁芯121的端面积以及永磁体1311的磁感应强度，就可调整电磁装置12对摆杆13的驱动力。因电磁装置12固定在第一安装部分11内，摆杆13即可全方位自由摆动。当脉冲电流消失后电磁场也随即消失，摆杆13随即回摆，如此反复，摆杆13在回摆的过程中在摆杆上端131安装的永磁体1311引起穿过线圈122中的磁通产生变化进而由于电磁感应产生对应于摆杆13摆动的电压信号，此感应电压信号的极性、振幅、宽度、相位、频率等参数都与摆杆13摆动的方向、速度、幅度、频率等相对应，由于摆杆13在气体、液体、固体三类介质中所受到的阻尼明显不同，在气体介质中 受到的阻尼最小可以忽略，感应出的电压信号最强，在液体介质中受到的阻尼居中，相对于气体介质中摆杆13摆动要偏于缓慢，有些迟滞，因此其感应出的电压信号的相位有些滞后，幅度、频率、持续时间等都有所减小，在固体中受到的阻尼最大以致于不能摆动而没有感应出电压信号，信号放大电路24将来自线圈122感应的电压信号放大并输入到信号处理电路25，信号处理电路25将根据摆杆13在气体、液体、固体三类介质中摆动而被电磁装置12所感应出的电压信号的振幅或相位等的明显不同就可判断出固体介质或液体介质的有无，并将此物体位置位信号输入到信号延时输出电路26经过若干时间延时后经引出线引出作指示、报警、自动控制等用。
需要指出的是，当电磁装置12未通电时，摆杆13受到自身重力以及永磁体1311与铁芯121的吸力，从而使得摆杆13在两个力的作用而处于平衡状态。如图1所示，当本发明的物体检测装置处于垂直向下状态时，这时摆杆13与铁芯121的吸力与摆杆13的自身重力在一条直线上并通过摆动支点(即摆杆13与第二安装部分12摆动连接的位置)。参见图4所示，当本发明的物体检测装置倾斜安装时，摆杆13由于受到永磁体1311与铁芯121的吸力的作用也会保持相应的倾斜角度，如果电磁装置12通电产生的电磁力将打破这个平衡态，从而使得摆杆13摆动偏移这个平衡态，当电磁装置12断电后摆杆13又会回到之前的平衡态.调整本发明的摆杆13的重心位置，以及永磁体1311的磁场强度，即使在水平放置时，也能使得摆杆13处于水平的平衡态(参见图5所示)。因此，通过将永磁体1311设置在本发明的摆杆13的端部，并且永磁体1311与摆杆13同轴设置，从而在不通电的情况下，能够通过永磁体1311与铁芯121之间的吸引力即可以使本发明在倾斜甚至水平状态下依然能够进行检测，使本发明能够应用到不同的安装位置下工作，使本发明的使用范围更广，适用性更强。
如图6所示，根据本发明的另一种实施方式，主体11包括第一安装部分111和第二安装部分112。在本实施方式中，第二安装部分112与第一安装部分111相互垂直设置，其中，各组件之间相互之间的设置方式与前述实施方式保持一致，在此不再赘述。通过上述设置方式，使本发明的物 体检测装置能够水平横装，适用于安装在贮料仓侧壁的垂直面或斜面部位，降低了对本发明的安装要求，保证了本发明的检测结果的准确。
如图7所示，根据本发明的另一种实施方式，主体11包括第一安装部分111和第二安装部分112。在本实施方式中，第二安装部分112为敞口且呈弧状的侧壁，支撑轴1121固定设置在第二安装部分112上。在本实施方式中，摆杆13的摆杆上端131的一侧设置有一延伸臂，从而使摆杆13整体呈L型。永磁体1311设置在摆杆上端131的一侧的延伸臂上。摆杆13上的第一通孔132与支撑轴1121相互连接，并且连接位置与电磁装置12相对设置，永磁体1311同样位于电磁装置12与支撑轴1121之间，使永磁体1311与电磁装置12的铁芯121相对设置，从而保证了本发明的良好的检测效果。参见图7所示，在本实施方式中，在摆杆13与主体11相连接位置与电磁装置12的铁芯121相对的位于铁芯121的右侧，使得永磁体1311能够与铁芯121相对，当然摆杆13与主体11相连接位置也是可以改变的，保证永磁体1311能够与铁芯121相对即可。在本实施方式中，摆杆13上设置的第一连杆133与摆杆13是一体，当然也可以是可拆卸的。另外，由于第二安装部分112为敞口的，因此其可以根据需要选择性的设置柔性保护罩1122。其余各组件之间相互之间的设置方式与前述实施方式保持一致，在此不再赘述。通过上述设置方式，使本发明的物体检测装置能够水平横装，适用于安装在贮料仓侧壁的垂直面或斜面部位，降低了对本发明的安装要求，保证了本发明的检测结果的准确。
如图8所示，根据本发明的另一种实施方式，摆杆13还设置有第二连杆134。在本实施方式中，第二连杆134与第一连杆133通过弹性件135相互同轴的连接。通过设置第二连杆134从而能够有效延长第一连杆133的长度，并且在第二连杆134与第一连杆133连接位置之间设置弹性件135，通过采用弹性件135使第二连杆134与第一连杆133连接位置之间构成柔性连接，从而能够在第二连杆134受到被测物料过大的冲击时或受到被测物料过大的侧压力时发生弹性变形，而不致于发生永久变形而影响到检测的可靠性，保证了本发明的工作稳定。在本实施方式中，挡片133b设置在第二连杆134远离第一连杆133的一端，通过设置挡片133b，从而有利于 增大与检测物体的接触面积，从而有效提高了本发明检测物体时的灵敏度和精度。
根据本发明的一种实施方式，摆杆13、第一连杆133和第二连杆134中的一个或多个采用抗磁性材料。由于本发明的摆杆13上设置有永磁体1311，因此在检测过程中，若被检测物体具有磁性或者含有磁性杂质，则容易吸附在本发明的摆杆13、第一连杆133和第二连杆134上，进而严重影响本发明检测的精度，因此，通过采用抗磁性材料，从而避免摆杆13、第一连杆133和第二连杆134上吸附磁性颗粒，保证了本发明的检测精度。
根据本发明，通过将摆杆13上的永磁体1311与电磁装置12相对且间隔设置，从而使本发明在工作过程中，摆杆12与电磁装置始终为不接触的，因此避免了产生摆杆12与其它组件的敲击动作，从而既没有敲击噪音又减少了磨损，提高了本发明的防爆安全等级。由于摆杆13悬吊在电磁装置12的下方，通过调整二者之间的间隙，和调整线圈122的线圈安匝数与铁芯121的端面积以及永磁体1311的磁感应强度，就可调整电磁装置12对摆杆13的驱动力，不仅方便快捷，而且节约成本。
根据本发明，通过将永磁体1311设置在本发明的摆杆13的端部，从而在不通电的情况下，能够通过永磁体1311与铁芯121之间的吸引力即可以使本发明在倾斜甚至水平状态下依然能够进行检测，降低了安装垂直度的要求，甚至于能倾斜到水平位置都能可靠工作，使本发明能够应用到不同的安装位置下工作，使用范围更广，适用性更强。
根据本发明，由于永磁体1311的磁极方向与电磁装置12的磁极方向相交设置，因此电磁装置12通电后由于铁芯121只有一端与永磁体1311相对，进而其产生的电磁驱动力与永磁体1311之间不但有同性相斥的推力还有异性相吸的吸引力，从而使得电磁驱动力成倍提高，就可大幅缩小电磁装置12的体积，节省了材料，降低了生产、运输及保管成本，同时功耗也大为降低，就可生产出微功耗的二线制产品，安装使用时就可减少布线成本，节约能源。另外，因为摆杆13摆动使得线圈122中的磁通不但有磁通量大小的变化还有方向的变化，所以电磁装置12断电后采集到的摆杆13摆动的信号也是成倍增长，进而使本发明的检测精度和灵敏度更高。
根据本发明，通过采用柔性保护罩1122能将摆杆13上的永磁体1311和被检测物隔离，并且因此摆杆13、第一连杆133和第二连杆134等部件可采用抗磁性材料，从而使本发明可以检测铁磁性的物料(例如铁、钴、镍等物料)与粘附力大的物料。
根据本发明，由于本发明的物体检测装置只有摆杆13与被测物料接触，因此减小了对被测物料正常流动的阻碍，也就减少了被检测物料因结拱搭桥而形成局部空洞，还减少了被测物料在本发明的物体检测装置上残留的影响，提高了信号输出的可靠性。
上述内容仅为本发明的具体方案的例子，对于其中未详尽描述的设备和结构，应当理解为采取本领域已有的通用设备及通用方法来予以实施。以上所述仅为本发明的一个方案而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种用于物体检测的动作机构，其特征在于，包括：主体(11)，固定设置在所述主体(11)上的电磁装置(12)，与所述主体(11)摆动连接的摆杆(13)；
    所述摆杆(13)与所述主体(11)相连接位置与所述电磁装置(12)的铁芯相对设置，且所述摆杆(13)的摆杆上端(131)与所述电磁装置(12)相对且间隔设置；
    所述摆杆上端(131)设有永磁体(1311)，所述永磁体(1311)的磁极方向与所述电磁装置(12)的磁极方向相交设置。
  2. 根据权利要求1所述的动作机构，其特征在于，所述主体(11)包括用于安装所述电磁装置(12)的第一安装部分(111)，用于安装所述摆杆(13)的第二安装部分(112)；
    所述第一安装部分(111)为一端密封的筒状体，所述电磁装置(12)设置于所述第一安装部分(111)内侧，所述摆杆(13)位于所述第一安装部分(111)的外侧。
  3. 根据权利要求2所述的动作机构，其特征在于，所述第二安装部分(112)上设置有支撑轴(1121)，所述摆杆(13)上设置有贯穿其本体的第一通孔(132)，所述摆杆(13)通过所述第一通孔(132)与所述支撑轴(1121)摆动连接。
  4. 根据权利要求3所述的动作机构，其特征在于，所述支撑轴(1121)为弧形轴。
  5. 根据权利要求3或4所述的动作机构，其特征在于，所述第二安装部分(112)还设置有柔性保护罩(1122)；
    所述第二安装部分(112)的侧壁和所述柔性保护罩(1122)构成一容纳空腔，所述永磁体(1311)、所述摆杆上端(131)和所述支撑轴(1121)均位于所述容纳空腔内，所述摆杆(13)与所述摆杆上端(131)相对的一端位于所述容纳空腔外。
  6. 根据权利要求5所述的动作机构，其特征在于，所述第二安装部分 (112)为筒状体，其一端设置有用于安装所述柔性保护罩(1122)的第一夹紧结构(1123)；
    所述柔性保护罩(1122)具有供所述摆杆(13)穿过的第二通孔(1122a)。
  7. 根据权利要求6所述的动作机构，其特征在于，所述摆杆(13)设置有第一连杆(133)；
    所述第一连杆(133)与所述摆杆(13)可拆卸地连接，且所述摆杆(13)与所述第一连杆(133)连接位置将所述柔性保护罩(1122)夹紧；
  8. 根据权利要求7所述的动作机构，其特征在于，所述摆杆(13)还设置有第二连杆(134)；
    所述第二连杆(134)与所述第一连杆(133)通过弹性件(135)相互同轴的连接。
  9. 根据权利要求7或8所述的动作机构，其特征在于，所述摆杆(13)、所述第一连杆(133)和所述第二连杆(134)中的至少一个采用抗磁性材料。
  10. 一种采用权利要求1至9所述的动作机构的物体检测装置，其特征在于，包括：动作机构(1)，以及与所述动作机构(1)中的电磁装置(12)相互电连接的电子模块(2)。
PCT/CN2019/116516 2018-11-09 2019-11-08 一种用于物体检测的动作机构及物体检测装置 WO2020094114A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021546441A JP7302128B2 (ja) 2018-11-09 2019-11-08 物体検出のための動作機構及び物体検出装置
EP19881787.6A EP3879241B1 (en) 2018-11-09 2019-11-08 Action mechanism for object detection and object detection device
US17/229,895 US20210257140A1 (en) 2018-11-09 2021-04-14 Actuating mechanism for object detection and object detection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811332855.9A CN110530457A (zh) 2018-11-09 2018-11-09 一种用于物体检测的动作机构及物体检测装置
CN201811332855.9 2018-11-09

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/229,895 Continuation US20210257140A1 (en) 2018-11-09 2021-04-14 Actuating mechanism for object detection and object detection device

Publications (1)

Publication Number Publication Date
WO2020094114A1 true WO2020094114A1 (zh) 2020-05-14

Family

ID=68659120

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/116516 WO2020094114A1 (zh) 2018-11-09 2019-11-08 一种用于物体检测的动作机构及物体检测装置

Country Status (5)

Country Link
US (1) US20210257140A1 (zh)
EP (1) EP3879241B1 (zh)
JP (1) JP7302128B2 (zh)
CN (1) CN110530457A (zh)
WO (1) WO2020094114A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112826168B (zh) * 2021-01-05 2022-07-01 吉林大学第一医院 一种脑神经损伤患者眩晕保护机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2136462Y (zh) * 1992-09-10 1993-06-16 蒋宗杰 料仓料位斜高测定器
CN2522840Y (zh) * 2002-04-11 2002-11-27 武汉亿胜科技有限公司 电子单摆物料定位检测仪
CN1900665A (zh) * 2005-07-18 2007-01-24 杨尚明 电磁力式料位计
US20070169549A1 (en) * 2006-01-23 2007-07-26 Southwest Research Institute Method and apparatus for sensing fuel levels in tanks
CN102155968A (zh) 2011-03-08 2011-08-17 陈益华 电磁推敲式物体检测装置
CN206057596U (zh) * 2016-09-23 2017-03-29 张建宇 一种数字式电磁感应物位检测装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400262A (en) * 1943-06-24 1946-05-14 Magnavox Co Electric impulse generator
US2556348A (en) * 1948-09-17 1951-06-12 John M Thompson Adjustable locking support
JPS5530837U (zh) * 1978-08-18 1980-02-28
DE2855643B2 (de) * 1978-12-22 1980-10-16 Vega Vertrieb Und Fertigung Elektronischer Geraete Und Apparate Grieshaber Kg, 7620 Wolfach Vorrichtung zur Feststellung und/oder Kontrolle eines bestimmten Füllstandes in einem Behälter
JPH0563006U (ja) * 1991-09-30 1993-08-20 松下電工株式会社 有極電磁石
US6040752A (en) * 1997-04-22 2000-03-21 Fisher; Jack E. Fail-safe actuator with two permanent magnets
US6216534B1 (en) * 1998-08-28 2001-04-17 Rochester Gauges, Inc. Liquid level gauge with hinged float arm
JP2000255685A (ja) * 1999-03-04 2000-09-19 Matsui Mfg Co 粉粒体の小型レベルスイッチ
EP1543702A2 (en) * 2002-09-26 2005-06-22 Seiko Epson Corporation Drive mechanism
JP2004151074A (ja) * 2002-10-31 2004-05-27 Nohken:Kk 振動式レベルセンサの多点物体検出装置
SE0402731D0 (sv) * 2004-11-10 2004-11-10 Gyros Ab Liquid detection and confidence determination
JP4551192B2 (ja) * 2004-11-17 2010-09-22 関西オートメイション株式会社 振子式レベル検出装置
CN101592251B (zh) * 2009-06-29 2010-09-29 江南大学 低功耗常压电磁阀
CN102214980A (zh) * 2010-04-01 2011-10-12 戴珊珊 电磁产生机械往复双稳态运动的方法及装置
CN207570634U (zh) * 2017-11-20 2018-07-03 中盐青海昆仑碱业有限公司 石灰窑料位检测自动化控制系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2136462Y (zh) * 1992-09-10 1993-06-16 蒋宗杰 料仓料位斜高测定器
CN2522840Y (zh) * 2002-04-11 2002-11-27 武汉亿胜科技有限公司 电子单摆物料定位检测仪
CN1900665A (zh) * 2005-07-18 2007-01-24 杨尚明 电磁力式料位计
US20070169549A1 (en) * 2006-01-23 2007-07-26 Southwest Research Institute Method and apparatus for sensing fuel levels in tanks
CN102155968A (zh) 2011-03-08 2011-08-17 陈益华 电磁推敲式物体检测装置
CN206057596U (zh) * 2016-09-23 2017-03-29 张建宇 一种数字式电磁感应物位检测装置

Also Published As

Publication number Publication date
US20210257140A1 (en) 2021-08-19
EP3879241B1 (en) 2023-09-20
JP7302128B2 (ja) 2023-07-04
EP3879241A1 (en) 2021-09-15
JP2022508875A (ja) 2022-01-19
EP3879241A4 (en) 2022-07-20
CN110530457A (zh) 2019-12-03

Similar Documents

Publication Publication Date Title
CA2828328C (en) Electromagnetic pushing and knocking-type object detector
WO2020094114A1 (zh) 一种用于物体检测的动作机构及物体检测装置
CN100403353C (zh) 地球仪
CN208421204U (zh) 磁铁磁极检测装置
KR100377090B1 (ko) 경사 센서
CN202002702U (zh) 电磁推敲式物体检测装置
CN207675915U (zh) 一种电磁铁吸力测试装置
US3069907A (en) Magnetic type current meter
CN209727211U (zh) 一种用于物体检测的动作机构及物体检测装置
US3026428A (en) Low frequency pickup
CN108856473A (zh) 一种电磁流量计用矽钢条快速冲孔装置
CN217181255U (zh) 一种检测铁磁性物质的传感器
JPH051913A (ja) 傾斜検出装置
CN103017831B (zh) 带有极限值开关的悬浮体流量计
CN109494118B (zh) 空调系统用水流开关及空调系统
CN210380803U (zh) 一种无触点式重力开关
JP2005118908A (ja) マグネットチャックの着磁状態の表示方法およびその装置
JP2006247767A (ja) 磁気懸垂支持装置
CN115585903A (zh) 温度探测装置
JP2015195142A (ja) 磁性体検知器
JP2021056097A (ja) 磁気式近接スイッチ
JP2001084878A (ja) 傾斜スイッチ
TH67565B (th) ตัวตรวจพบวัตถุประเภทผลักและกระแทกด้วยแม่เหล็กไฟฟ้า
JP2019005304A (ja) 遊技機
JP2000111346A (ja) フーコ振り子の加振装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19881787

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021546441

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019881787

Country of ref document: EP

Effective date: 20210609