Split type magnetostrictive sensor

Abstract

The utility model discloses a split type magnetostrictive sensor which comprises a controller, a detection rod and an electronic bin, a waveguide wire is arranged in the detection rod, a magnet is movably arranged on the detection rod, the electronic bin and the detection rod are fixedly installed, and a circuit module is arranged in the electronic bin. The circuit module is connected with the waveguide wire to carry out electromagnetic excitation on the waveguide wire and detect strain pulses generated by the waveguide wire under magnetic field induction of the magnet. The controller comprises a shell and a display module mounting seat, a display module is fixedly mounted on the shell, the display module is connected with the circuit module, and the shell is movably mounted on the working place. According to the split type magnetostrictive sensor, the controller, the detection rod and other sensing devices are designed in a split mode, so that the detection condition can be visually observed outside an object to be detected through the display module, the measurement function can be adjusted, and a user can conveniently install and disassemble the sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetostrictive sensors, in particular to a split magnetostrictive sensor. Background Art

[0002] Magnetostrictive sensors are widely used to measure the height of liquids in tanks. Traditional magnetostrictive sensors consist of a probe rod with a magnetostrictive waveguide wire inside. Atop the rod is an electronics compartment housing a current pulse generator and strain pulse detection circuitry. A float with a magnetic ring inside slides onto the probe rod. The probe rod is inserted into the liquid to be measured, and the float floats on the surface.

[0003] During measurement, a current pulse generator applies a current pulse to the waveguide wire, creating a circular magnetic field along its axis. This magnetic field propagates downward along the waveguide wire. When this propagating magnetic field encounters the magnetic field formed by the magnetic ring in the float, the two fields superimpose on each other, causing the waveguide wire to deform momentarily, generating a strain pulse. This strain pulse propagates to both ends of the waveguide wire. When it reaches the electronic chamber at the top of the probe rod, it is received by the strain pulse detection circuit. The distance between the electronic chamber and the float is calculated by multiplying the time it takes for the current pulse to occur and the time it takes for the strain pulse to be received by the strain pulse propagation speed. Liquid level can be determined based on this magnetostrictive principle.

[0004] Currently, all components of magnetostrictive sensors on the market are integrated into a single structure, making assembly and transportation inconvenient. Integrated magnetostrictive sensors can only view detection data by transmitting it to an external computer, and cannot directly display measurement conditions. If part of a component is damaged, it must be replaced entirely, resulting in increased maintenance costs. When used in industrial sites, magnetostrictive sensors sometimes need to be installed inside different tanks depending on the actual situation. Many of these tanks have high requirements and special structures, such as high operating pressure and limited installation space, which makes installation of magnetostrictive sensors inconvenient.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to provide a split magnetostrictive sensor, which can intuitively display detection conditions and is easy to install.

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0008] A split magnetostrictive sensor is characterized in that it includes a controller, a detection rod and an electronic compartment, wherein a waveguide wire is arranged in the detection rod, a magnet is movably arranged on the detection rod, the electronic compartment is fixedly mounted on the detection rod, a circuit module is arranged in the electronic compartment, the circuit module is connected to the waveguide wire to electromagnetically excite the waveguide wire and detect strain pulses generated by the magnetic field induction of the magnet on the waveguide wire; the controller includes a shell and a display module, the display module is fixedly mounted on the shell, the display module is connected to the circuit module, and the shell is movably mounted on the work site.

[0009] In one or more embodiments of the present invention, the display module includes a display panel and a circuit board, the display panel is provided with a display screen, the display panel is connected to the circuit board, the circuit board is connected to the circuit module, and the circuit board and the display panel are fixedly mounted to the shell.

[0010] In one or more embodiments of the present invention, the display panel is further provided with indicator lights and / or buttons.

[0011] In one or more embodiments of the present invention, the controller further includes a mounting base, the mounting base is fixedly installed at a work location, and the housing and the mounting base are movably installed.

[0012] In one or more embodiments of the present invention, a slot is provided on the shell, a protrusion structure is provided on the mounting seat, and the protrusion structure is engaged in the slot; or a slot is provided on the mounting seat, a protrusion structure is provided on the shell, and the protrusion structure is engaged in the slot.

[0013] In one or more embodiments of the present invention, the controller further includes a fixing member, and the fixing member is used to fix the protruding structure in the slot.

[0014] In one or more embodiments of the present invention, the protrusion structure includes a connecting column and a spherical protrusion, the slot is a spherical slot, and the spherical protrusion is engaged in the slot.

[0015] In one or more embodiments of the present invention, a buckle is provided on the shell, and the buckle is engaged with the mounting seat.

[0016] In one or more embodiments of the present invention, a magnet is provided on the housing, and the magnet is fixed to the working location by magnetic attraction.

[0017] In one or more embodiments of the present invention, the controller also includes a first connector, which is fixedly mounted on the shell, connected to the display module, and used to connect the circuit module; and / or the controller also includes a second connector, which is fixedly mounted on the shell, connected to the display module, and used to connect an external device.

[0018] Compared with the existing technology, the split magnetostrictive sensor of the utility model has a split design for the controller and sensor components such as the detection rod, which makes it easier to observe the detection status through the display module outside the object to be measured, adjust the measurement function, and is convenient for users to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is the overall structural diagram of the split magnetostrictive sensor in Example 1 of the present utility model.

[0021] Figure 2 This is a schematic diagram of the overall structure of the controller in Example 1 of the present utility model.

[0022] Figure 3 This is a partial structural diagram of the controller in Example 1 of the present utility model.

[0023] Figure 4 This is a partial structural diagram of the controller in the second embodiment of the present utility model.

[0024] Figure 5 This is a partial structural diagram of the controller in Example 3 of the present utility model. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] The terms "coupled," "connected," or "connected" in this specification encompass both direct and indirect connections. An indirect connection is a connection made through an intermediate medium, such as an electrically conductive medium, which may have parasitic inductance or capacitance. An indirect connection may also include a connection through other active or passive devices, such as switches, follower circuits, or other circuits or components, to achieve the same or similar functional objectives. Furthermore, in this specification, terms such as "first" and "second" are primarily used to distinguish one technical feature from another and do not necessarily require or imply a specific relationship, quantity, or order between these technical features.

[0027] In the detailed description of the specification, reference is made to the accompanying drawings forming a part thereof, wherein like reference numerals designate like parts throughout, and wherein exemplary embodiments that may be implemented are shown by way of example. It should be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. Therefore, the following detailed description should not be construed in a limiting sense.

[0028] The various operations in the specification may be described as multiple discrete actions or operations in a manner that is most helpful in understanding the claimed subject matter. However, the order of description should not be interpreted as implying that these operations must be sequentially related. Specifically, these operations may not be performed in the order presented. The described operations may be performed in an order different from the described embodiments. Various additional operations may be performed and / or the described operations may be omitted in additional embodiments.

[0029] For the purposes of this disclosure, the phrase "A and / or B" means (A), (B), or (A and B). For the purposes of this disclosure, the phrase "A, B and / or C" means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).

[0030] Various components and devices may be referred to or shown herein in the singular, but this is merely for ease of discussion, and any element referred to in the singular may include a plurality of such elements in accordance with the teachings herein.

[0031] The specification uses the phrases "in one embodiment," "in other embodiments," or "in some embodiments," which can each refer to one or more of the same or different embodiments. In addition, the terms "including," "comprising," "having," etc. used with respect to the embodiments of the present disclosure are synonymous.

[0032] Example 1

[0033] like Figure 1As shown, the split magnetostrictive sensor in one embodiment of the present invention includes a controller 10 , a detection rod 20 and an electronic compartment 30 .

[0034] Among them, a waveguide wire is arranged in the detection rod 20, a magnet is movably arranged on the detection rod 20, the electronic compartment 30 is fixedly installed with the detection rod 20, and a circuit module is arranged in the electronic compartment 30. The circuit module is connected to the waveguide wire to electromagnetically excite the waveguide wire and detect the strain pulse generated by the magnetic field induction of the magnet on the waveguide wire.

[0035] Specifically, the circuit module is provided with a current pulse generator and a pulse detection circuit. A float is slidably mounted on the detection rod 20, a magnet is disposed inside the float, the detection rod 20 is inserted into the liquid to be detected, and the float floats on the surface of the liquid.

[0036] During measurement, a current pulse generator electromagnetically excites the waveguide filament, generating a current pulse. This current pulse creates a circular magnetic field along the filament's axis, which propagates downward along the filament. When this propagating magnetic field encounters the magnetic field formed by the magnet in the float, the two fields superimpose, causing the waveguide filament to deform momentarily, generating a strain pulse. This strain pulse propagates toward both ends of the filament and reaches the electronic chamber 30 at the top of the probe rod 20, where it is received by the pulse detection circuit. The distance between the electronic chamber 30 and the float is calculated by multiplying the time it takes for the current pulse to occur and the time it takes for the strain pulse to be received by the propagation speed of the strain pulse. This magnetostrictive principle allows the liquid level to be determined.

[0037] This embodiment does not involve any improvement to the detection rod 20 and the electronic compartment 30 and can be implemented using existing technologies. The object to be measured is not limited to the liquid level.

[0038] like Figure 1 As shown, the controller 10 includes a housing 40 , a display module 50 , a first connector 60 , a second connector 70 and a mounting base 80 .

[0039] The display module 50 is fixedly installed on the housing 40 , the housing 40 is movably installed on the mounting base 80 , and the mounting base 80 is fixedly installed at the work location.

[0040] The first connector 60 is fixedly mounted on the housing 40 and connected to the display module 50. The first connector 60 is used to connect to the circuit module. The second connector 70 is fixedly mounted on the housing 40 and connected to the display module 50. The second connector 70 is used to connect to external devices.

[0041] Preferably, the second connector 70 is an aviation plug.

[0042] In one embodiment, the housing 40 includes a top housing 41 and a bottom housing 42. The top housing 41 is used to mount the display module 50, the first connector 60, and the second connector 70. The bottom housing 42 is fixed to the top housing 41 via bolts and is movably mounted to the mounting base 80. The mounting base 80 is fixedly mounted at a work location, such as a liquid storage tank, a work stand, etc.

[0043] like Figure 2 As shown, the display module 50 includes a display panel 51 and a circuit board 52. The display panel 51 is provided with a display screen 511, an indicator light 512 and a button 513. The display panel 51 is connected to the circuit board 52. The circuit board 52 is connected to the first connector 60 and the second connector 70. The circuit board 52 and the display panel 51 are fixedly installed on the top shell 41.

[0044] The display screen 511 can display parameters such as liquid level and temperature, and the button 513 can be used to control the display screen 511 for calibration settings, brightness settings, parameter adjustments, etc. The indicator light 512 can be used to indicate whether the liquid to be measured is within the liquid level range.

[0045] Specifically, the top case 41 is provided with a first mounting hole 411 and a second mounting hole 412. The first mounting hole 411 is used to mount an indicator light 512, while the second mounting hole 412 is used to mount a display screen 511 on the display panel 51. The display panel 51 is adhered to the outside of the top case 41 with a sealant, ensuring that the controller 10 has good sealing and pressure resistance, thus adapting to some special operating scenarios.

[0046] In one embodiment, a bracket 43 is further provided inside the top shell 41, and the bracket 43 is used to fix the circuit board 52. The bracket 43 is fixed to the top shell 41 by bolts.

[0047] In other embodiments, the display panel 51 may not include the indicator light 512 and / or the button 513. The display screen 511 may be an OLED screen or a touch screen to implement touch operation. Internal functions may also be configured to include a date function, brightness control function, and the use of small animations to simulate real-time liquid level and temperature changes.

[0048] like Figure 3 As shown, a slot 421 is defined on the bottom shell 42 , and a protruding structure 81 is provided on the mounting seat 80 . The protruding structure 81 is engaged in the slot 421 .

[0049] Specifically, the slot 421 extends from the edge of the bottom shell 42 to the interior of the bottom shell 42, and the protrusion structure 81 can be inserted from the opening at the edge of the bottom shell 42. The cross-sections of the slot 421 and the protrusion structure 81 are both T-shaped, thereby ensuring that the protrusion structure 81 will not fall out after being inserted into the slot 421.

[0050] Preferably, the controller 10 further includes a fixing member 44, which is used to fix the protruding structure 81 in the slot 421. The shape of the fixing member 44 is adapted to the slot 421, and the outside is covered with an anti-slip strip. After the protruding structure 81 is inserted into the slot 421, the fixing member 44 is then inserted into the slot 421. The fixing member 44 can be firmly stuck in the slot 421, thereby preventing the protruding structure 81 from falling out of the slot 421.

[0051] In other embodiments, the slots 421 and the protruding structures 81 of other different shapes may be used. Alternatively, the protruding structure 81 may be provided on the bottom shell 42 , and the slots 421 may be provided on the mounting seat 80 .

[0052] In other embodiments, a buckle may also be provided on the housing 40 to engage with the mounting base 80 via the buckle.

[0053] In actual use scenarios, after the detection rod 20 and the electronic compartment 30 sense the liquid level value based on the magnetostrictive principle, the circuit in the electronic compartment 30 can transmit the required liquid level data to the display module 50, and then intuitively display the liquid level through the display screen 511. The display function can also be directly adjusted through the button 513, and the indicator light 512 can also intuitively determine whether the liquid level is within the range. The display module 50 is connected to the external device through the second connector 70, which can realize external data interaction and remote control. The housing 40 of the controller 10 can be easily installed and disassembled with the mounting base 80, which is convenient for on-site use and subsequent after-sales processing.

[0054] Example 2

[0055] like Figure 4 As shown, the split magnetostrictive sensor in this embodiment differs from that in the first embodiment only in the movable mounting method of the bottom housing 42 and the mounting base 80. The rest of the structure of the detection rod 20, the electronic compartment 30, the display module 50, the first connector 60, the second connector 70, and the housing 40 are the same as those in the first embodiment.

[0056] Specifically, a protrusion structure is provided on the bottom shell 42 , and a slot 82 is provided on the mounting seat 80 , and the protrusion structure is snapped into the slot 82 .

[0057] The protruding structure includes a connecting column 422 and a spherical protrusion 423 . The slot 82 is a spherical slot, and the spherical protrusion 423 is engaged in the slot 82 .

[0058] Preferably, the latching slot 82 is further provided with a making way slot 83 for making way for the connecting column 422 .

[0059] In other embodiments, a slot may be provided on the bottom shell 42 , and a protruding structure may be provided on the mounting seat 80 .

[0060] When the ball protrusion 423 is inserted into the slot 82, the ball protrusion 423 can rotate within the slot 82. The clearance slot 83 can change the angle between the housing 40 and the mounting base 80 by making way for the connecting post 422, thereby allowing the housing 40 to face different directions, facilitating viewing of the display module 50 from different positions. When the housing 40 needs to be disassembled, the ball protrusion 423 can also be pulled out of the slot 82.

[0061] Example 3

[0062] like Figure 5 As shown, the difference between the split magnetostrictive sensor of this embodiment and the embodiment 1 lies in the way in which the shell 40 is movably installed at the workplace. In this embodiment, no mounting base is provided, and the detection rod 20, the electronic compartment 30, the display module 50, the first connector 60, the second connector 70 and other structures of the shell 40 are consistent with those in the embodiment 1.

[0063] Specifically, a magnet 424 is provided on the bottom shell 42 , and the magnet 424 is magnetically mounted to the work location.

[0064] The work place can also be provided with magnets or magnetic materials. Fixing the controller 10 by magnetic attraction not only makes it easy to take the controller 10, but also allows the controller 10 to be conveniently placed in different locations.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0066] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A split magnetostrictive sensor, characterized in that: The device comprises a controller, a probe rod and an electronic compartment. A waveguide wire is provided in the probe rod, a magnet is movably provided on the probe rod, the electronic compartment is fixedly mounted to the probe rod, and a circuit module is provided in the electronic compartment. The circuit module is connected to the waveguide wire to electromagnetically excite the waveguide wire and detect strain pulses generated by the magnetic field induced by the magnet on the waveguide wire. The controller includes a housing and a display module. The display module is fixedly installed on the housing. The display module is connected to the circuit module. The housing is movably installed on the work site.

2. The split magnetostrictive sensor according to claim 1, characterized in that: The display module includes a display panel and a circuit board. The display panel is provided with a display screen. The display panel is connected to the circuit board. The circuit board is connected to the circuit module. The circuit board and the display panel are fixedly mounted to the housing.

3. The split magnetostrictive sensor according to claim 2, characterized in that: The display panel is also provided with indicator lights and / or buttons.

4. The split magnetostrictive sensor according to claim 1, characterized in that: The controller further comprises a mounting base, which is fixedly mounted at a work location, and the housing and the mounting base are movably mounted.

5. The split magnetostrictive sensor according to claim 4, characterized in that: A slot is provided on the housing, and a protrusion is provided on the mounting seat, and the protrusion is engaged in the slot; or A slot is provided on the mounting seat, and a protrusion structure is provided on the shell. The protrusion structure is engaged in the slot.

6. The split magnetostrictive sensor according to claim 5, characterized in that: The controller further includes a fixing member, which is used to fix the protruding structure in the slot.

7. The split magnetostrictive sensor according to claim 5, characterized in that: The protrusion structure includes a connecting column and a spherical protrusion, the slot is a spherical slot, and the spherical protrusion is snap-connected in the slot.

8. The split magnetostrictive sensor according to claim 4, characterized in that: The shell is provided with a buckle, and the buckle is engaged with the mounting seat.

9. The split magnetostrictive sensor according to claim 1, characterized in that: The shell is provided with a magnet, and the magnet is fixed to the working place by magnetic attraction.

10. The split magnetostrictive sensor according to claim 1, characterized in that: The controller further includes a first connector, the first connector is fixedly mounted on the housing, the first connector is connected to the display module, and the first connector is used to connect to the circuit module; and / or The controller further includes a second connector, which is fixedly mounted on the housing and connected to the display module, and is used to connect to an external device.

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