CN216247092U - High-precision acoustic wave sensor for PIND detection - Google Patents

Abstract

The utility model discloses a high-precision acoustic wave sensor for PIND detection, which comprises a conductive working table, wherein a plurality of sensor units are arranged on the working table, the sensor units are arranged on the working table in a square shape, and the sensor units are connected together through a lead. The sensor unit arranged in the utility model can be more suitable for detecting the square element device on the market, and makes up the defect that the detection accuracy cannot be ensured and the use requirement cannot be met because the sensor unit cannot be covered when the square element device is detected in the existing market.

Description

High-precision acoustic wave sensor for PIND detection

Technical Field

The utility model relates to the technical field of nondestructive testing equipment, in particular to a high-precision acoustic wave sensor for PIND detection.

Background

As is well known, Particle Impact Noise Detection (PIND) test is an effective means for detecting excess, and is generally used to detect excess loose particles in the packages of electronic components such as integrated circuits, transistors, capacitors, relays in the fields of aviation, aerospace and military. The principle is that a series of specified mechanical impact and vibration are generated by a vibration table, particles (namely, excess) bound in a product are loosened by the impact, and the excess is displaced in a system by the vibration with a certain frequency. The process of the displacement of the movable surplus objects in the product is a random combination process of the sliding process and the impacting process of the surplus objects relative to the shell of the product. In the process, stress elastic waves and sound waves are generated, the two waves are transmitted in a product shell to form a reverberation signal, the reverberation signal is defined as a displacement signal (after the displacement signal is picked up by a piezoelectric sound wave sensor and amplified by a preamplifier), the displacement signal is collected, processed and displayed by a host of the detection device, and a detector can judge the signal property according to the displayed signal waveform to obtain a detection conclusion.

After the PIND (particle impact noise detection) is used for packaging an electronic component, the detection test of the impact noise of redundant particles in the component aims at detecting free particles in a packaging cavity of the component, is a nondestructive test, and finally aims at improving the reliability of the component.

Present sensor loading table face all is circular, chinese utility model patent for CN207263292U as the authorization notice number, a high accuracy acoustic wave sensor for PIND detects is disclosed, including electrically conductive table surface, a plurality of sensor grooves have been seted up to the table surface lower surface, the sensor groove is including the central sensor groove that is located the table surface central point and around a plurality of peripheral sensor grooves that the central sensor groove is the annular and arranges, central sensing unit has been pasted through conductive adhesive in the central sensor groove, it has peripheral sensing unit to paste through conductive adhesive in the peripheral sensor groove, all be connected with the wire on central sensing unit and a plurality of peripheral sensing unit, and concatenate continuously through the wire. The 50MM sensor sensing unit is only located at the center, the effective use area is small, the requirements of small and micro devices can be met, along with the continuous development of the devices, the devices with larger volumes are more and more, for the devices with the bottom areas of the devices exceeding the area of the sensor, if the original smaller sensor is used, the device is not applicable, and for the 100MM sensor, four sensing points are uniformly distributed at the center and at the proper position of the cross center line by taking the center as a base point, and the total number of the sensing points is five.

With the continuous development and application of DC/DC devices, when the DC/DC devices are used in the PIND experiments with the two mesas (50 MM sensor and 100MM sensor), the DC/DC devices are generally large in size and mainly square in shape, and when the experiments with the 50MM or 100MM mesas show that the square devices are loaded on the mesas, one sensing point of the 50MM cannot monitor all places of the devices, and five sensing points are in a circular mode and cannot completely cover the square devices, so that the square devices cannot be effectively detected, and the use requirements cannot be met.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the high-precision acoustic wave sensor for the PIND detection, so that the problems that the square device cannot be completely covered and the detection is better performed in the prior art are solved, and the defects in the prior art are overcome.

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

a high-precision acoustic wave sensor for detecting PIND comprises a conductive working table, wherein a plurality of sensor units are arranged on the working table, the sensor units are arranged on the working table in a square shape, and each sensor unit is connected together through a lead.

Further, the square is rectangular.

Furthermore, a plurality of mounting grooves are formed in the lower surface of the working table, the sensor units are mounted in the mounting grooves, and the mounting grooves are arranged in a square shape.

Furthermore, the mounting groove is including setting up the middle recess of table surface lower surface a plurality of, and use middle recess is in as the symmetry axis the table surface lower surface is provided with a plurality of's side recess, middle recess with the side recess all installs correspondingly the sensor unit, middle recess with the side recess with correspond the sensor unit passes through the electrically conductive adhesive and pastes together.

Furthermore, a cylindrical plug is plugged in the middle of the middle groove, a cover plate is arranged on the side groove, and the cover plate is movably connected to one side of the side groove.

Furthermore, the cover plate is connected to one side of the side groove through a rotating shaft or in a hinged mode, and the other side of the cover plate is fixedly locked to the lower surface of the working table top through a clamping structure or a screw.

Furthermore, the number of the sensor units is six, correspondingly, the number of the mounting grooves is also six, and the sensor units are distributed on the working table in a square shape with two rows and three columns.

Compared with the prior art, the utility model has the beneficial effects that:

the plurality of sensor units are arranged on the working table in a square shape, so that the sensor units arranged in the square shape can be more suitable for detecting the square component on the market, and the defect that the detection accuracy cannot be guaranteed and the use requirement cannot be met due to the fact that the sensor units cannot be covered when the square component is detected in the existing market is overcome.

Drawings

FIG. 1 is a schematic top view of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic diagram of the use state of the miniature device of the present invention.

FIG. 4 is a schematic diagram of the operation state of the large-scale device of the present invention.

In the figure: 1, a working table surface; 2, a sensor unit; 3, mounting a groove; 31, a middle groove; 32, side grooves; 33, conductive adhesive; 34, a cylindrical plug; 35, a cover plate.

Detailed Description

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1 and 2, as shown in the drawings, a high-precision acoustic wave sensor for detecting PIND comprises a conductive working table 1, wherein a plurality of sensor units 2 are arranged on the working table 1, the plurality of sensor units 2 are arranged on the working table 1 in a square (preferably rectangular) shape, and each sensor unit 2 is connected together through a wire.

The first embodiment is as follows: further, as shown in fig. 1, a plurality of mounting grooves 3 are provided on the lower surface of the working table 1, the sensor units 2 are mounted in the mounting grooves 3, and the mounting grooves 3 are arranged in a square shape.

Example two: on the basis of the first embodiment, as shown in fig. 1 and fig. 2, the mounting groove 3 includes a plurality of middle grooves 31 disposed on the lower surface of the working table 1, and a plurality of side grooves 32 disposed on the lower surface of the working table 1 with the middle grooves 31 as the symmetry axis, the middle grooves 31 and the side grooves 32 are both provided with corresponding sensor units 2, and it is to be further described that the middle grooves 31 and the side grooves 32 are adhered to the corresponding sensor units 2 through conductive adhesives 33.

Example three: on the basis of the second embodiment, as shown in fig. 1 and fig. 2, in order to prevent the sensor unit 2 from falling off due to poor fixing performance of the conductive adhesive 33, a cylindrical plug 34 is plugged in the middle of the middle groove 31, a cover plate 35 is disposed in the side groove 32, the cover plate 35 is movably connected to one side of the side groove 32, specifically, the cover plate 35 is connected to one side of the side groove 32 through a rotating shaft or a hinge, and the other side of the cover plate 35 is fixedly locked on the lower surface of the working table 1 through a clamping structure (a clamping column and a groove) or a screw (a bolt), so that not only is the operation convenient, but also unstable fixation of the sensor unit 2 is more favorably prevented, when the detachment and replacement are needed, only the cylindrical plug 34 in the middle groove 31 needs to be removed, and then the sensor unit 2 in the middle groove 31 needs to be removed, replaced and installed, only the cover plate 35 needs to be opened for the side groove 32, facilitating the removal, replacement and installation of the sensor unit 2 corresponding to the side groove 32.

Example four: on the basis of the second or third embodiment, as further shown in fig. 1 and 2, the tail portion of the middle groove 31 is provided with a mounting seat 36, an acceleration sensor 37 is fixed at the middle position of the mounting seat 36 through a bolt, wherein the mounting seat 36 and the tail portion of the middle groove 31 are connected together through a conductive glue 38. More specifically, the mounting seat 36 is provided with an annular groove 361, and correspondingly, the end surface of the tail portion of the intermediate groove 31 is provided with a convex pillar, so that the convex pillar is engaged with the annular groove 361, which can fix the mounting seat 36 on the end surface of the tail portion of the intermediate groove 31. More specifically, the assembly seat 36 is used for leading out the wires, wherein the assembly seat 36 is made of stainless steel, and the work table top 1 is made of aluminum, so that the production and the manufacture are convenient.

Example five: on the basis of the second embodiment or the third embodiment or the fourth embodiment, as further shown in fig. 1 and fig. 2, six sensor units 2 are adopted, and correspondingly, six mounting grooves 3 are also adopted, wherein rectangles arranged in two rows and three columns are distributed on the working table top 1. As shown in fig. 3, when a device with a smaller size can be detected by using the sensor units 2 corresponding to the two middle grooves 31 or the sensor units 2 corresponding to the two side grooves 32, a small square (rectangular or square) component can be detected; when for a bulky rectangular device, as shown in fig. 4, all sensor units 2 on the worktop 1 can be used, so that all six sensor units 2 can cover the detection surface. Therefore, the square component regardless of the size can be detected, and the detection accuracy and the detection applicability are greatly improved.

The standard parts that use in this application file all can purchase from the market, and the concrete connected mode of each part all adopts conventional means such as mature bolt, rivet among the prior art, and sensor unit and acceleration sensor internal component all adopt conventional model among the prior art, and its internal structure belongs to the prior art structure, and the workman just can accomplish according to prior art manual and carry out normal operating to it, and circuit connection adopts conventional connected mode among the prior art, does not make specific statement here again.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims (7)

1. A high accuracy acoustic wave sensor for PIND detects, includes electrically conductive table surface (1), be provided with sensor unit (2) of a plurality of on table surface (1), its characterized in that: the sensor units (2) are arranged on the working table top (1) in a square shape, and each sensor unit (2) is connected together through a lead.

2. A high accuracy acoustic wave sensor for PIND detection as recited in claim 1 wherein: the square is rectangular.

3. A high accuracy acoustic wave sensor for PIND detection as claimed in claim 1 or 2 wherein: the working table is characterized in that a plurality of mounting grooves (3) are formed in the lower surface of the working table top (1), the sensor units (2) and the mounting grooves (3) are installed in the mounting grooves (3) in a square arrangement mode.

4. A high accuracy acoustic wave sensor for PIND detection as recited in claim 3, wherein: mounting groove (3) are including setting up table surface (1) lower surface a plurality of middle recess (31), and with middle recess (31) are the symmetry axis and are in table surface (1) lower surface is provided with a plurality of side recess (32), middle recess (31) with side recess (32) all install the correspondence sensor unit (2), middle recess (31) with side recess (32) and corresponding sensor unit (2) are pasted together through conducting resin (33).

5. A high accuracy acoustic wave sensor for PIND detection as recited in claim 4 wherein: the middle plug of the middle groove (31) is provided with a cylindrical plug (34), the side groove (32) is provided with a cover plate (35), and the cover plate (35) is movably connected to one side of the side groove (32).

6. A high accuracy acoustic wave sensor for PIND detection as recited in claim 5, wherein: the cover plate (35) is connected to one side of the side groove (32) through a rotating shaft or in a hinged mode, and the other side of the cover plate (35) is fixedly locked to the lower surface of the working table top (1) through a clamping structure or a screw.

7. A high accuracy acoustic wave sensor for PIND detection as recited in claim 3, wherein: six sensor units (2) are adopted, correspondingly, six mounting grooves (3) are also adopted, and the square bodies in two rows and three columns are distributed on the working table top (1).

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