福彩3d走势图标准版⎛⎝kqjsb⎠⎞ Full range magnetostrictive displacement sensor - industry trends - Shenzhen easie Electric Co., Ltd

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Full range magnetostrictive displacement sensor

Release date: June 23, 2019 Hits: 60

Magnetostrictive sensor is the most reliable, accurate and convenient liquid level sensor in the field of measurement. Magnetostrictive sensors originated in the United States, and many domestic manufacturers have made reference to its technology. At present, the whole product structure is being imitated. The remarkable features are: there is a long cylindrical body outside the instrument shell, or a long cylindrical step is left on the instrument shell, and the upper end of the waveguide wire 10 is directly fixed on the rectangular circuit board 20, as shown in Fig. 1. Due to the different processing technology of different manufacturers, the performance of products is different, but the function is not much different.

Since the upper end of the waveguide wire 10 is directly fixed on the rectangular circuit board 20, the existing magnetostrictive sensors have a common feature: there are blind areas at the upper end of the sensors that cannot be measured, but the number of blind areas of different manufacturers is different. Due to the existence of this blind area, the sensor is limited in some small range applications or narrow installation space. If the height of the container is 200 mm, installing a sensor with a 50 mm blind area can only measure in the range of less than 150 mm.

summary of the invention

In view of the shortcomings of the prior art, the utility model aims to provide a full range magnetostrictive displacement sensor, so as to solve the problem of certain blind area existing in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A full range magnetostrictive displacement sensor comprises a circuit board, a waveguide wire and a number of wires. The end of the waveguide wire is connected with the circuit board through the wire, and the middle part of the waveguide wire is coiled into a pie shape; the circuit board is located above the middle part of the waveguide wire. The electronic bin also includes an upper bin and a lower bin connected with the upper bin, and the middle part of the waveguide wire is located in the lower bin; the lower bin is provided with a sealant block, and the middle part of the waveguide wire is arranged in the sealant block; the circuit board is installed in the upper bin and stacked on the sealant block. The circuit board is installed in the upper bin, and the middle part of the waveguide wire is located in the lower bin.

The wire passes through the partition board and is electrically connected with the circuit board, the circuit board is provided with a jack, the wire is inserted into the jack, the lower compartment is provided with a sealant block, the middle of the waveguide wire is located in the sealant block, the waveguide wire is provided with an insulating layer, and also includes a waveguide rod, one end of the waveguide wire is located in the waveguide rod, and the The middle part is coiled into a round cake shape, and the circuit board is circular.

Compared with the prior art, the full range magnetostrictive displacement sensor provided by the utility model has no blind area by winding the middle part of the waveguide wire into a pie shape, and connecting its end with the circuit board through the wire, so that the magnetostrictive displacement sensor has no blind area, and can make the magnetostrictive displacement sensor smaller, especially suitable for the precise measurement of micro range.

Description of drawings

Figure 1 shows the structure of the existing magnetostrictive displacement sensor.

 Sketch Map

Fig. 2 is the structural diagram of the full range magnetostrictive displacement sensor of the utility model.

 Sketch Map

Specific implementation mode

The utility model provides a full range magnetostrictive displacement sensor, which is used in the field of displacement detection in mechanical manufacturing industry, liquid level measurement and control and precision measurement of liquid medium. The sensor has no blind area, and is especially suitable for precise measurement of micro range, with simple structure and low cost.

In order to make the purpose, technical scheme and effect of the utility model more clear and definite, the following describes the utility model in detail with reference to the attached drawings and citing the implementation examples. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

Please refer to figure 2, which is the structural diagram of the full range magnetostrictive displacement sensor of the utility model. The full range magnetostrictive displacement sensor circuit board 101, waveguide wire 102 and a number of wires are provided by the utility model. The end of the waveguide wire 102 is connected with the circuit board 101 through the wire, and the middle part of the waveguide wire 102 is coiled into a pie shape; the circuit board 101 is located above the middle part of the waveguide wire 102.

The wire comprises a first wire 103 and a second wire 104, one end of the waveguide wire 102 is connected with the circuit board 101 through the first wire 103, the middle part of the waveguide wire 102 is coiled into a pie shape, and the other end of the waveguide wire 102 is connected with the circuit board 101 through the second wire 104, that is, both ends of the wave guide wire 102 are connected with the driving electricity on the circuit board 101 through the first wire 103 and the second wire 104 respectively Road connection.

In the utility model, the waveguide wire 102 is encircled in the plane and unfolded concentrically in the horizontal plane, that is, the middle part of the waveguide wire 102 is coiled into a cake shape, which makes the magnetostrictive displacement sensor have no blind area in its measuring range compared with the traditional magnetostrictive displacement sensor composed of linear waveguide wire.

In the implementation example of the utility model, the middle part of the waveguide wire 102 is coiled into a circular pie shape, the circuit board 101 is circular, and the diameter of the circuit board 101 is preferably the same as that of the middle part of the circular pie shaped waveguide wire 102, so that the electronic bin can be designed into a flat structure, which has the characteristics of beautiful appearance compared with the traditional long circular column structure. Of course, in other embodiments, the middle part of the waveguide wire 102 and the circuit board 101 can also be designed in other shapes, such as square pie shape. The utility model has no limitation on this.

The full range magnetostrictive displacement sensor provided by the utility model also includes a waveguide rod (not shown in the figure), the waveguide rod is installed on the electronic bin, and one end of the waveguide wire 102 is located in the waveguide rod, which is an existing design and will not be described in detail here.

In the lower layer of the magnetic bin, a full range sensor connected with the upper layer of the magnetic bin (102) is provided; In the middle part of the waveguide, the sealant 102 is arranged in the middle of the waveguide to avoid contacting with the air block. The circuit board is installed in the upper storehouse and stacked on the sealant block. The upper storehouse can also decide whether to cast sealant according to the use environment. The utility model has no limitation on this.

Of course, the electronic bin can also adopt other structures. For example, the electronic bin is provided with a partition board (not shown in the figure) for dividing the electronic bin into the upper bin and the lower bin, the circuit board 101 is installed in the upper bin, and the middle part of the waveguide wire 102 is located in the lower bin. A sealant block (not shown in the figure) is arranged in the lower compartment, and the middle part of the waveguide wire 102 is located in the sealant block.

In production, after the middle part of the coiled waveguide wire 102 is placed in the lower bin, the sealant is poured in the lower bin to avoid the middle part of the waveguide wire 102 from contacting with the air, so as to protect the waveguide wire 102. Moreover, the waveguide wire 102 and the circuit board 101 are separated by the utility model, and the two are electrically connected through wires. During maintenance, the circuit board 101 and the waveguide rod can be separated for maintenance, so as to save the maintenance cost.

In this embodiment, the first wire 103 and the second wire 104 are flexible wires, and the first wire 103 and the second wire 104 are electrically connected with the circuit board 101 through the partition board. In the specific implementation process, a jack is arranged on the circuit board 101, and the first wire 103 and the second wire are inserted into the jack and connected with the driving circuit on the circuit board 101. The traditional magnetostrictive displacement sensor directly weld or fix the upper end of the waveguide wire 102 to the circuit board 101. Compared with the traditional magnetostrictive displacement sensor, this embodiment simplifies the production process and improves the production efficiency.

Furthermore, in the full range magnetostrictive displacement sensor of the utility model, the waveguide wire 102 is provided with an insulating layer, which can be isolated and protected by insulating materials to avoid direct contact between the waveguide wire 102 and the air.

To sum up, the utility model makes the magnetostrictive displacement sensor have no blind area by winding the middle part of the waveguide wire into a pie shape and connecting the end of the waveguide wire with the circuit board through the wire, so that the magnetostrictive displacement sensor can be made smaller, especially suitable for the precise measurement of small range. Moreover, the waveguide wire is isolated from the air by sealant and insulating material, which can protect the waveguide wire from air contact. At the same time, the full range magnetostrictive displacement sensor of the utility model also has the characteristics of simple manufacturing process and low cost.

It can be understood that for ordinary technical personnel in the art, equivalent replacement or change can be made according to the technical scheme of the utility model and the concept of the utility model, and all such changes or substitutions shall belong to the protection scope of the claims attached to the utility model.


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