CN210833400U - Distance parameter tester of magnetic proximity sensor - Google Patents
Distance parameter tester of magnetic proximity sensor Download PDFInfo
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- CN210833400U CN210833400U CN201921988949.1U CN201921988949U CN210833400U CN 210833400 U CN210833400 U CN 210833400U CN 201921988949 U CN201921988949 U CN 201921988949U CN 210833400 U CN210833400 U CN 210833400U
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Abstract
A distance parameter tester of a magnetic proximity sensor, comprising: a non-metallic plate having a multi-segment test structure; the multiple sections of the test structures are provided with flush bottom surfaces as the bottom surfaces of the whole nonmetal plates; in the multiple sections of the test structures, the thickness of each section of the test structure is sequentially increased step by step, and the thickness difference between two adjacent sections of the test structures is equal, so that a multi-stage equal-height step structure is formed; in the multiple sections of the test structures, the thickness value of each section of the test structure is marked on the surface of the test structure by using a number; a metal plate having a flat top surface; the bottom surface of the non-metal plate is fixed on the top surface of the metal plate. The distance parameter tester can enable the distance parameter test of the magnetic proximity sensor to be more efficient.
Description
Technical Field
The utility model relates to an industrial automation control technology field, concretely relates to magnetic force type proximity sensor's distance parameter tester.
Background
A magnetic-type proximity sensor (e.g., an inductive proximity sensor) is a typical proximity sensor. The principle of the magnetic proximity sensor is generally: the magnetic-type proximity sensor can generate an alternating magnetic field around the magnetic-type proximity sensor, when a metal object approaches a detection coil, the metal object can generate an eddy current to absorb magnetic field energy, so that internal parameters of the magnetic-type proximity sensor change, a circuit in the magnetic-type proximity sensor reaches another state, the state can be converted into a switching signal to be output through a monitoring circuit, and the purpose of detecting without contacting a detection object is achieved.
In the testing process of the magnetic proximity sensor, the induction distance and the return difference distance are indispensable items. The return difference is also called the variation of the instrument, and the maximum deviation between two characteristic curves obtained by ascending and descending measured values in the whole measuring range of the instrument.
In order to precisely test the sensing distance and the return difference distance of the magnetic proximity sensor, the traditional test method is to adopt a movable tester made of a micrometer, a tested standard object iron block is welded at the rod end of the micrometer, and corresponding parameters are sensed and read along with the distance of a handle of the micrometer. This method requires frequent calibration and is slow to operate, affecting production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem provide a magnetic force type proximity sensor's distance parameter tester to guarantee can detect magnetic force type proximity sensor's distance parameter (response distance and return difference distance) fast conveniently, improve test speed, improve production efficiency.
In order to solve the above problem, the utility model provides a magnetic force type proximity sensor's distance parameter tester, include: a non-metallic plate having a multi-segment test structure; the multiple sections of the test structures are provided with flush bottom surfaces as the bottom surfaces of the whole nonmetal plates; in the multiple sections of the test structures, the thickness of each section of the test structure is sequentially increased step by step, and the thickness difference between two adjacent sections of the test structures is equal, so that a multi-stage equal-height step structure is formed; in the multiple sections of the test structures, the thickness value of each section of the test structure is marked on the surface of the test structure by using a number; a metal plate having a flat top surface; the bottom surface of the non-metal plate is fixed on the top surface of the metal plate.
Optionally, the numbers are marked on the top surface of each segment of the test structure.
Optionally, the top surface of the test structure is coated with a color layer, and the color layer coated adjacent to the top surface of the test structure is different in color; the number is marked on the color layer.
Optionally, the numbers are marked on the side of each segment of the test structure.
Optionally, the side surfaces of the test structures are coated with color layers with the same area, and the color layers coated on the side surfaces of the adjacent test structures are different in color; the numbers are marked on the color layer on the side surface of the test structure; or the side surfaces of the test structures are coated with color layers with different areas, and the color layers coated on the side surfaces of the adjacent test structures are different in color; the numbers are marked on the color layer on the side of the test structure.
Optionally, the top surface of the test structure is also coated with the color layer, and the color layer coated on the top surface of the adjacent test structure is different in color; the numbers are also marked on the color layer on the top surface of the test structure.
Optionally, the non-metal plate has oblique end surfaces at both ends, and the oblique end surfaces are inclined from the top surface to the bottom surface of the non-metal plate; the inclined end face is provided with a screw hole, a screw is arranged in the screw hole, and the screw is used for fixing the non-metal plate on the metal plate.
Optionally, the inclined angle of the inclined end face is smaller than 45 degrees.
Optionally, the side surface of the metal plate is provided with the color layer corresponding to the side surface of the non-metal plate, and the color layer is provided with the number label.
Optionally, the metal plate is an iron plate; the non-metal plate is a bakelite plate.
In one aspect of the technical solution of the present invention, the distance parameter tester of the magnetic proximity sensor comprises a non-metal plate having a multi-step structure and a metal plate located below the non-metal plate, each step structure (test structure) represents a test distance, so that the magnetic proximity sensor can know whether the metal plate at the bottom can be sensed at the time when the magnetic proximity sensor is placed on a test structure, thereby rapidly testing the distance parameters (sensing distance and return difference distance) of the magnetic proximity sensor, i.e. the magnetic proximity sensor gradually slides over the top surface of each test structure (step) of the distance parameter tester, i.e. sensing at different distances can be immediately performed, and the sensing distance and return difference distance parameters can be immediately known, thereby making the test process extremely rapid, and simultaneously, the operation is simple, and the practical value is high, the production efficiency is improved.
Drawings
FIG. 1 is a schematic front view of a distance parameter tester of a magnetic proximity sensor in an embodiment;
FIG. 2 is a schematic top view of the distance parameter tester of FIG. 1;
FIG. 3 is a schematic front view of a distance parameter tester of a magnetic proximity sensor in another embodiment;
FIG. 4 is a schematic top view of the distance parameter tester of FIG. 3;
FIG. 5 is a schematic front view of a distance parameter tester of a magnetic proximity sensor in another embodiment;
FIG. 6 is a schematic top view of the distance parameter tester of FIG. 5;
FIG. 7 is a schematic front view of a distance parameter tester of a magnetic proximity sensor in another embodiment;
FIG. 8 is a schematic top view of the distance parameter tester of FIG. 7;
FIG. 9 is a schematic front view of a distance parameter tester of a magnetic proximity sensor in another embodiment;
fig. 10 is a schematic top view of the distance parameter tester of fig. 9.
Detailed Description
The distance parameter tester of the existing magnetic proximity sensor leads to a corresponding method, needs to be calibrated frequently, has low operation speed and affects the production efficiency.
Therefore, the utility model provides a new magnetic force type proximity sensor's distance parameter tester to solve the not enough of above-mentioned existence.
For a clearer illustration, the present invention will be described in detail with reference to the accompanying drawings.
Example one
An embodiment of the present invention provides a distance parameter tester for a magnetic proximity sensor, please refer to fig. 1 and 2 in combination. A distance parameter tester of a magnetic proximity sensor includes: a non-metallic plate 210 and a metallic plate 220.
The non-metal plate 210 has a multi-segment test structure, and is shown in fig. 1 and 2 as having 7 segments (in other embodiments, more segments are possible, such as 8 segments, 9 segments, 10 segments, 11 segments, 12 segments, or 15 segments, etc.), but only one of them is labeled as a representative in fig. 1 and 2 (the segment of the test structure is distinguished by a dotted line in fig. 1, and the dotted lines in other figures play the same role), and is a test structure 211.
The multi-segmented test structure has a flush bottom surface as the bottom surface of the entire non-metallic plate 210, i.e., the entire non-metallic plate 210 bottom is flat. In the multi-section test structure, the thickness of each section of test structure is sequentially increased step by step, and the thickness difference between two adjacent sections of test structures is equal, so as to form a multi-stage equal-height step structure, as shown in fig. 1.
In the multi-section test structure, the thickness value of each section of test structure is marked on the surface of the test structure by numbers. FIG. 2 shows that, in the present embodiment, numbers are marked on the top surface of each segment of the test structure (as can be seen from FIG. 1, the top surface is a step surface). In this embodiment, as shown in fig. 2, the thickness of the test structure increases from 4.7 to 5.3 from left to right.
Note that the number 5.0 in fig. 2 is just blocked by the magnetic proximity sensor 100, and the same applies to fig. 4, 6, 8, and 10. In other embodiments, the test is also performed using the magnetic proximity sensor 100, and the description is given here.
The thickness values of the test structures are in mm (millimeters), and therefore, these numbers represent a gradual increase in their thickness from 4.7mm to 5.3 mm. The thickness of the test structure is controlled to be 4.7mm to 5.3mm in the present embodiment, and the median between 4.7mm to 5.3mm is 5.0mm because the sensing distance of the magnetic proximity sensor 100 to be detected is 5.0mm in the present embodiment.
The metal plate 220 has a flat top surface. The bottom surface of the non-metal plate 210 is fixed to the top surface of the metal plate 220. In this embodiment, the bottom surface of the non-metal plate 210 may be fixed on the top surface of the metal plate 220 by using glue.
The metal plate 220 may have a rectangular parallelepiped shape, and each surface may be flat, but the top surface is ensured to be flat.
The non-metal plate 210 is a multi-step structure, and can be formed by precision machining to ensure the thickness of each step structure to be accurate. In this embodiment, the step thickness difference is set to 0.1mm (other embodiments may be adjusted), and, as described above, the thickness is divided into 7 segments from 4.7mm to 5.3 mm.
In this embodiment, in the step-shaped structure of the non-metal plate, each step is small in height, and therefore, the non-metal plate can be manufactured by using a computer machine tool (numerical control machine tool) or other equipment, and the length and width of the step can be appropriately selected (for example, in a range of one to five centimeters).
In this embodiment, the metal plate 220 may be made of an iron plate. The metal plate 220 may be made of various metal materials (such as copper, brass, aluminum, stainless steel, nickel, or cast iron), but iron is the strongest sensing function of the magnetic proximity sensor. Because the attenuation factor of iron to the magnetic field generated by a magnetic-type proximity sensor is the largest, 1.0, while that of induced aluminum is about 0.4. That is, a magnetic proximity sensor usually claims a sensing distance of 5mm, and thus usually means a distance of 5mm for sensing iron and 5X 0.4-2 mm for sensing aluminum. In addition, fe360 steel can also reach a damping factor close to that of iron.
The attenuation factor is an attenuation coefficient. In the present invention, each metal plate is used as a detection body, and its material (material) affects the sensing distance of the magnetic proximity sensor. The influence of the material property of the detection body on the detection distance is described by using an attenuation coefficient. The attenuation coefficient refers to how much the travel distance of a material is reduced relative to iron (St 37). It is known that the smaller the attenuation coefficient, the smaller the travel distance of this particular material. Thus, as previously mentioned, iron (St37) has a damping coefficient of 1.0, whereas according to the test, aluminium has a damping coefficient (factor) of 0.4.
In this embodiment, the non-metal plate 210 may be made of various non-metal materials (such as various plastics or ceramics), but may be specifically a bakelite plate. The bakelite plate has good medium function and is easy to process.
By the distance parameter tester of the magnetic proximity sensor provided by the embodiment, the distance parameters (the induction distance and the return difference distance) of the magnetic proximity sensor 100 shown in fig. 1 and 2 can be tested quickly, and the production efficiency is improved.
Specifically, the magnetic proximity sensor 100 is placed over a test structure (shown in fig. 1 and 2) having a numeral designation of 5.0. At this time, if the magnetic proximity sensor 100 can sense the metal plate 220, the indicator light of the magnetic proximity sensor 100 is usually turned on, which indicates that the magnetic proximity sensor 100 can sense the metal plate 220 within 5.0 mm; in contrast, at this time, if the magnetic proximity sensor 100 cannot sense the metal plate 220, the indicator light of the magnetic proximity sensor 100 is not usually turned on, which indicates that the magnetic proximity sensor 100 cannot sense the metal plate 220 within 5.0 mm.
Through the above two different test structures, when it is possible to continue to test a larger distance (i.e., the magnetic proximity sensor 100 is placed on the test structure having a larger thickness) or a smaller distance (i.e., the magnetic proximity sensor 100 is placed on the test structure having a smaller thickness), respectively, whether the magnetic proximity sensor 100 can sense the metal plate 220 or not, so as to know the distance parameter of the magnetic proximity sensor 100, wherein the distance parameter includes the sensing distance and the return difference distance. The whole process is quick and convenient, and the test effect is high. That is, when the magnetic proximity sensor 100 gradually slides on the top surface of each test structure (step) of the distance parameter tester, it can immediately perform the sensing of the corresponding different distances and immediately learn the sensing distance and the return difference distance parameter, so that the test process becomes very fast, and the magnetic proximity sensor is simple in operation, high in practical value and capable of improving the production efficiency.
Meanwhile, since the non-metal plate 210 and the metal plate 220 are fixed together, the entire distance parameter tester includes a fixing member (solid fixing member), is fast in use, and can be repeatedly operated.
Example two
An embodiment of the present invention provides another distance parameter tester for a magnetic proximity sensor, please refer to fig. 3 and 4 in combination. A distance parameter tester of a magnetic proximity sensor includes: a non-metallic plate 310 and a metallic plate 320.
The multi-segment test structure has a flush bottom surface as the bottom surface of the entire non-metal plate 310, i.e., the bottom of the entire non-metal plate 310 is flat (for subsequent attachment to the metal plate). In the multi-section test structure, the thickness of each section of test structure is sequentially increased step by step, and the thickness difference between two adjacent sections of test structures is equal, so as to form a multi-stage equal-height step structure, as shown in fig. 3.
In the multi-section test structure, the thickness value of each section of test structure is marked on the surface of the test structure by numbers. In the present embodiment, the numbers are marked on the side surfaces of each segment of the test structure, as shown in fig. 3, and the numbers are also marked on the top surface of each segment of the test structure (as can be seen from fig. 3, the top surface is a step surface). As in the previous example, fig. 4, starting from the left to the right, increases the thickness of the test structures from 4.7 up to 5.3, respectively, in mm (millimeters), and therefore, these numbers represent a gradual increase in their thickness from 4.7mm to 5.3 mm. The thickness of the test structure is controlled to be 4.7mm to 5.3mm (the median is 5.0mm) in the present embodiment because the sensing distance of the magnetic proximity sensor 100 to be detected is 5.0 mm.
In other embodiments, the above-mentioned reference numerals may be different, and in this case, the sensing distance corresponding to the magnetic proximity sensor 100 to be detected is different.
It should be noted that in other embodiments, a whole series of distance parameter testers with multiple magnetic proximity sensors can be manufactured, each tester having a different median (e.g., 0.6mm, 1.0mm, 1.6mm, 3.5mm, 5.0mm, 10.0mm, etc.).
Accordingly, in other embodiments, a full range of distance parameter testers from 0.1mm up to 100mm in thickness can be fabricated. For example, the first distance from the parameter tester is from 0.1mm to 3.0mm, the second distance from the parameter tester is from 3.1mm to 6.0mm, and so on, and the test distance is divided into different sections and manufactured respectively.
The metal plate 320 has a flat top surface. The bottom surface of the non-metal plate 310 is fixed to the top surface of the metal plate 320.
The distance parameter tester of the magnetic proximity sensor provided in this embodiment uses the same principle as the previous embodiment.
In contrast, in this embodiment, the side surfaces of each test structure (representing test structure 311) are coated with a color layer (not labeled) having the same area, and the side surfaces of adjacent test structures are coated with color layers having different colors, as shown in fig. 3. The numbers are marked on the color layer on the sides of the test structures (i.e., the numbers are marked on the sides of each segment of the test structure). Also, fig. 4 shows that the top surfaces of the test structures are also coated with a color layer, and the color layer coated on the top surface of adjacent test structures is different. The numbers are also marked on the color layer on the top surface of the test structure.
In this embodiment, the distance parameter tester of the magnetic proximity sensor has a corresponding color layer, which can facilitate identification of the test structure. Because the step height difference from a parametric tester is typically very small (e.g., typically 0.1mm, which may be set as desired), it is sometimes difficult to know on which top surface of the test structure the magnetic-type proximity sensor 100 is placed without a corresponding color layer. After the color layers are added, particularly after the color of the adjacent color layers is different, the corresponding test distance can be judged very directly and obviously and accurately.
EXAMPLE III
An embodiment of the present invention provides another distance parameter tester for a magnetic proximity sensor, please refer to fig. 5 and 6 in combination. A distance parameter tester of a magnetic proximity sensor includes: a non-metallic plate 410 and a metallic plate 420, the non-metallic plate 410 comprising a multi-segment test structure 411.
The distance parameter tester of the magnetic proximity sensor shown in fig. 5 and 6 is substantially the same as that of the magnetic proximity sensor shown in fig. 3 and 4, and thus, reference may be made to the foregoing embodiments in combination. The difference from fig. 3 and 4 is that in the present embodiment, as shown in fig. 5, the side surfaces of the test structures (represented by test structures 411) are coated with color layers of different areas, specifically, the entire side surfaces of the test structures are provided with color layers (again, as in the previous embodiments, the color layers coated on the side surfaces of adjacent test structures are different, and the numbers are marked on the color layers on the side surfaces of the test structures). The whole side of the test structure is provided with a color layer, which is more beneficial to identifying each corresponding test structure.
Fig. 5 and 6 show that in this embodiment, the top surfaces of the test structures are also coated with color layers simultaneously, and the color layers coated on the top surfaces of adjacent test structures are different in color. Numbers are also marked on the color layer on the top surface of the test structure.
Example four
An embodiment of the present invention provides another distance parameter tester for a magnetic proximity sensor, please refer to fig. 7 and 8 in combination. A distance parameter tester of a magnetic proximity sensor includes: a non-metallic plate 510 and a metallic plate 520, the non-metallic plate 510 including a multi-segment test structure 511.
The distance parameter tester of the magnetic proximity sensor shown in fig. 7 and 8 is substantially the same as that of the magnetic proximity sensor shown in fig. 1 and 2, and thus, reference may be made to the foregoing embodiments in combination. The difference between fig. 1 and 2 is that, in the present embodiment, as shown in fig. 7, the non-metal plate 510 has inclined end surfaces 512 at both ends, and the inclined end surfaces 512 are inclined from the top surface to the bottom surface of the non-metal plate 510. The inclined end surface 512 has a screw hole 513, and the screw hole 513 has a screw (not shown) therein, and the screw (not shown) is used to fix the non-metal plate 510 to the metal plate 520.
The end face is an upper portion connected to the top face and a lower portion connected to the bottom face. Since the inclined end surface 512 is inclined from the top surface to the bottom surface in the present embodiment, the presence of the inclined end surface 512 increases the contact area between the non-metal plate 510 and the metal plate 520, assuming the case shown in fig. 7.
In this embodiment, the inclined angle of the inclined end surface 512 is less than 45 degrees. This is because the corresponding screw is usually made of metal, and the inclined end surface 512 needs to be inclined at a smaller angle, so that after the screw is locked in, the distance from the screw to the top surface of the most adjacent test structure is greater than the distance from the top surface to the bottom surface of the test structure, so as to prevent the screw from affecting the corresponding test.
EXAMPLE five
An embodiment of the present invention provides another distance parameter tester for a magnetic proximity sensor, please refer to fig. 9 and 10 in combination. A distance parameter tester of a magnetic proximity sensor includes: a non-metallic plate 610 and a metallic plate 620, the non-metallic plate 610 comprising a multi-segment test structure 611.
The distance parameter tester of the magnetic proximity sensor shown in fig. 9 and 10 is substantially the same as that of the magnetic proximity sensor shown in fig. 7 and 8, and thus, reference may be made to the foregoing embodiments in combination. The difference from fig. 7 and 8 is that in the non-metal plate 610 of the present embodiment, the side surfaces (whole surfaces) of the test structures have corresponding color layers, the color layers of the adjacent test structure side surfaces have different colors, and numbers are marked on the color layers, as shown in fig. 9; moreover, the side of the metal plate 620 is also provided with a color layer corresponding to the side of the non-metal plate 610, and the color layer is provided with a number mark (thereby further ensuring that the tester has higher recognition function); meanwhile, in the embodiment, the top surface of the test structure is also provided with corresponding color layers, the color layers on the top surfaces of the adjacent test structures are different, and numbers are marked on the color layers on the top surfaces of the test structures at the same time.
As in fig. 7 and 8, the non-metal plate 610 has an inclined end surface 612, and the inclined end surface 612 is inclined from the top surface to the bottom surface of the non-metal plate 610. The inclined end surface 612 has screw holes 613, and the screw holes 613 have screws (not shown) therein for fixing the non-metal plate 610 to the metal plate 620.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. A distance parameter tester of a magnetic proximity sensor, comprising:
a non-metallic plate having a multi-segment test structure; the multiple sections of the test structures are provided with flush bottom surfaces as the bottom surfaces of the whole nonmetal plates; in the multiple sections of the test structures, the thickness of each section of the test structure is sequentially increased step by step, and the thickness difference between two adjacent sections of the test structures is equal, so that a multi-stage equal-height step structure is formed; in the multiple sections of the test structures, the thickness value of each section of the test structure is marked on the surface of the test structure by using a number;
a metal plate having a flat top surface; the bottom surface of the non-metal plate is fixed on the top surface of the metal plate.
2. The distance parameter tester of claim 1, wherein said number is marked on the top surface of each segment of said test structure.
3. The distance parameter tester of claim 2, wherein a top surface of the test structure is coated with a color layer, the color layer coated adjacent the top surface of the test structure being different in color; the number is marked on the color layer.
4. The distance parameter tester of claim 1, wherein said numbers are marked on the sides of each segment of said test structure.
5. The distance parameter tester of claim 1 or 4, wherein the side faces of the test structures are coated with color layers of the same area, the color layers coated adjacent to the side faces of the test structures being different in color; the numbers are marked on the color layer on the side surface of the test structure;
or the side surfaces of the test structures are coated with color layers with different areas, and the color layers coated on the side surfaces of the adjacent test structures are different in color; the numbers are marked on the color layer on the side of the test structure.
6. The distance parameter tester of claim 5, wherein the top surface of said test structure is also simultaneously coated with said color layer, the color layer coated adjacent to the top surface of said test structure being different in color; the numbers are also marked on the color layer on the top surface of the test structure.
7. The distance parameter tester of claim 5, wherein a side of said metal plate has said color layer corresponding to a side of said non-metal plate, said color layer having said number markings thereon.
8. The distance parameter tester of claim 1, wherein the non-metal plate has inclined end surfaces at both ends, the inclined end surfaces being inclined from a top surface to a bottom surface of the non-metal plate; the inclined end face is provided with a screw hole, a screw is arranged in the screw hole, and the screw is used for fixing the non-metal plate on the metal plate.
9. The distance parameter tester of claim 8, wherein the angle of inclination of the angled end face is less than 45 degrees.
10. The distance parameter tester of claim 1, wherein the metal plate is an iron plate; the non-metal plate is a bakelite plate.
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| CN201921988949.1U CN210833400U (en) | 2019-11-18 | 2019-11-18 | Distance parameter tester of magnetic proximity sensor |
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| CN201921988949.1U CN210833400U (en) | 2019-11-18 | 2019-11-18 | Distance parameter tester of magnetic proximity sensor |
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