Ultrasonic sensor

Abstract

The utility model provides an ultrasonic sensor which comprises a sensor main body, an ultrasonic focusing tube is detachably installed at an ultrasonic transmitting end of the sensor main body, the ultrasonic focusing tube is composed of a base and a sound tube, the base is detachably and fixedly connected with the sensor main body, a through hole is formed in the base, and the through hole extends outwards to form the sound tube. According to the ultrasonic sensor provided by the utility model, the ultrasonic focusing tube which is detachably mounted is arranged at the transmitting end of the sensor main body, so that sound waves can be gathered, a concentrated sound field is directly aligned with a detection point, the technical problem that an ultra-small object to be detected is detected by the ultrasonic sensor is solved, and the ultrasonic sensor is not affected by color and dust on a test site; and stable detection is realized due to interference of external environments such as light.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an ultrasonic sensor. Background Art

[0002] The sound waves emitted by ultrasonic sensors are spindle-shaped. When detecting small objects, most of the sound waves will pass through the object being measured. The sound waves received by the sensor's transducer will not reach the threshold for triggering output, resulting in missed detection.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design an ultrasonic sensor to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide an ultrasonic sensor.

[0005] To achieve the above-mentioned objectives and other related objectives, the technical solution provided by the present invention is: an ultrasonic sensor, comprising a sensor body, an ultrasonic transmitting end of the sensor body being detachably mounted with an ultrasonic focusing tube, the ultrasonic focusing tube being composed of a base and a sound tube, the base being detachably fixedly connected to the sensor body, the base being provided with a through hole, the through hole extending outward to form the sound tube.

[0006] A preferred technical solution is: when the ultrasonic focusing tube is assembled on the ultrasonic emitting end of the sensor body, the acoustic tube and the ultrasonic emitting end are arranged correspondingly.

[0007] The preferred technical solution is: a first magnet is provided on the upper portion of the bottom side of the base, and a second magnet is provided on the lower portion of the bottom side of the base.

[0008] A preferred technical solution is: a third magnet and a fourth magnet are provided on the sensor body, the third magnet corresponds to the first magnet and has opposite magnetic poles, and the fourth magnet corresponds to the second magnet and has opposite magnetic poles.

[0009] A preferred technical solution is that the first magnet and the second magnet are provided on both sides of the through hole and are arranged in a centrally symmetrical manner.

[0010] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0011] The ultrasonic sensor proposed in this utility model is capable of converging sound waves by providing a detachable ultrasonic focusing tube at the transmitting end of the sensor body, so that the concentrated sound field is directly aimed at the detection point, thereby solving the technical difficulty of detecting ultra-small objects with ultrasonic sensors. In addition, it is not affected by external environments such as color, dust, and light at the test site, and achieves stable detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the sensor body and the ultrasonic focusing tube involved in the present invention in an assembled state. DETAILED DESCRIPTION

[0013] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0014] See also Figure 1 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0015] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0016] Example:

[0017] like Figure 1As shown, according to an overall technical concept of the present invention, an ultrasonic sensor is provided, comprising a sensor body 1. An ultrasonic focusing tube 2 is detachably mounted on an ultrasonic emitting end of the sensor body 1. The ultrasonic focusing tube 2 comprises a base 21 and an acoustic tube 22. The base 21 is detachably fixedly connected to the sensor body 1. The base 21 is provided with a through hole extending outward to form the acoustic tube 22. The acoustic tube 22 functions to focus sound waves, directing the concentrated sound field toward a detection point, emitting sound waves directly toward the detection point. This allows measurement of drill holes or openings with diameters less than 5 mm.

[0018] A typical application is measuring liquid levels in micro-well plates, which are used in medical analysis. The acoustic tube can be placed directly above the opening, making accurate positioning easier. It can also be used to detect gaps of a few millimeters between two objects.

[0019] This solves the technical problem of using ultrasonic sensors to detect ultra-small objects. Furthermore, it is not affected by external environmental factors such as color, dust, and light at the test site, achieving stable detection.

[0020] like Figure 1 As shown, in an exemplary embodiment of the present invention, when the ultrasonic focusing tube 2 is assembled to the ultrasonic emitting end of the sensor body 1, the acoustic tube 22 is arranged corresponding to the ultrasonic emitting end.

[0021] like Figure 1 As shown, in an exemplary embodiment of the present invention, a first magnet 3 is provided on the upper bottom side of the base 21 , and a second magnet 4 is provided on the lower bottom side of the base.

[0022] like Figure 1 As shown, in an exemplary embodiment of the present invention, a third magnet 5 and a fourth magnet 6 are provided on the sensor body 1, the third magnet 5 corresponds to the first magnet 3 and the magnetic poles are arranged oppositely, and the fourth magnet 6 corresponds to the second magnet 4 and the magnetic poles are arranged oppositely; the above structure is used to realize rapid disassembly and assembly between the ultrasonic focusing tube 2 and the sensor body 1.

[0023] like Figure 1 As shown, in an exemplary embodiment of the present invention, the first magnet 3 and the second magnet 4 are provided on both sides of the through hole and are arranged symmetrically with respect to the center, so as to avoid the problem that the sound tube 22 and the ultrasonic transmitting end are not provided correspondingly after the ultrasonic focusing tube 2 is assembled.

[0024] Therefore, the utility model has the following advantages:

[0025] The ultrasonic sensor proposed in this utility model is capable of converging sound waves by providing a detachable ultrasonic focusing tube at the transmitting end of the sensor body, so that the concentrated sound field is directly aimed at the detection point, thereby solving the technical difficulty of detecting ultra-small objects with ultrasonic sensors. In addition, it is not affected by external environments such as color, dust, and light at the test site, and achieves stable detection.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical concepts disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An ultrasonic sensor, characterized in that: It includes a sensor body, an ultrasonic emitting end of the sensor body is detachably mounted with an ultrasonic focusing tube, the ultrasonic focusing tube is composed of a base and a sound tube, the base and the sensor body are detachably fixedly connected, a through hole is provided on the base, and the through hole extends outward to form the sound tube.

2. The ultrasonic sensor according to claim 1, wherein: When the ultrasonic focusing tube is assembled on the ultrasonic emitting end of the sensor body, the acoustic tube is arranged corresponding to the ultrasonic emitting end.

3. The ultrasonic sensor according to claim 1, wherein: A first magnet is provided on the upper portion of the bottom side of the base, and a second magnet is provided on the lower portion of the bottom side of the base.

4. The ultrasonic sensor according to claim 3, wherein: The sensor body is provided with a third magnet and a fourth magnet. The third magnet corresponds to the first magnet and has opposite magnetic poles. The fourth magnet corresponds to the second magnet and has opposite magnetic poles.

5. The ultrasonic sensor according to claim 3, wherein: The first magnet and the second magnet are provided on both sides of the through hole and are arranged in a centrally symmetrical manner.

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