CN110888170A

CN110888170A - Detection device

Info

Publication number: CN110888170A
Application number: CN201811041577.1A
Authority: CN
Inventors: 张琨盛; 林敬基
Original assignee: Acer Inc
Current assignee: Acer Inc
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2020-03-17

Abstract

A detection device, comprising: a spiral structure, a proximity sensor, a pass-through device, an electrostatic field enhancing device, and a non-conductive substrate. The helical thread structure has a first end and a second end. The proximity sensor is coupled to the first end of the first spiral structure. The electrostatic field enhancing element is adjacent to the spiral structure. The first end of the spiral structure is coupled to the electrostatic field enhancing element through the pass-through element, and the second end of the spiral structure is an open end. The first electrostatic field enhancement element is used for increasing the directivity of the detection device. The non-conductor substrate is arranged between the spiral structure and the electrostatic field enhancement element, wherein the through element penetrates through the non-conductor substrate.

Description

Detection device

Technical Field

The present invention relates to a Detection Device (Detection Device), and more particularly, to a Detection Device capable of increasing a Detectable Distance (Detectable Distance).

Background

With the development of mobile communication technology, mobile devices have become increasingly popular in recent years, such as: portable computers, mobile phones, multimedia players and other portable electronic devices with mixed functions. To meet the demand of people, mobile devices generally have a function of wireless communication. Some cover long-range wireless communication ranges, such as: the mobile phone uses 2G, 3G, LTE (Long Term Evolution) system and its used frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz for communication, while some cover short-distance wireless communication ranges, for example: Wi-Fi and Bluetooth systems use frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz for communication.

An Antenna Element (Antenna Element) is an essential component of a mobile device having a wireless communication function. In order to comply with government regulations for Specific Absorption Rate (SAR), designers typically incorporate a Proximity Sensor (P-Sensor) in the mobile device to control Radio Frequency (RF) power with respect to the antenna elements. However, the shape of the Sensing plate (Sensing Pad) of the proximity sensor is often limited by surrounding elements, which shortens the Detectable Distance (Detectable Distance) of the proximity sensor. Therefore, there is a need to provide a new solution to overcome the problems of the prior art.

Disclosure of Invention

In a preferred embodiment, the present invention provides a detection apparatus comprising: a first helical thread structure having a first end and a second end; a proximity sensor coupled to the first end of the first spiral structure; a first through-element; a first electrostatic field enhancement element adjacent to the first spiral structure, wherein the first end of the first spiral structure is coupled to the first electrostatic field enhancement element through the first through element, the second end of the first spiral structure is an open end, and the first electrostatic field enhancement element is used for increasing the directivity of the detection device; and a first non-conductive substrate interposed between the first spiral structure and the first electrostatic field enhancing element, wherein the first through-element penetrates the first non-conductive substrate.

In some embodiments, the first electrostatic field enhancing element is a first metal plane.

In some embodiments, the first spiral structure has a line width between 0.3mm and 0.5 mm.

In some embodiments, the pitch between any two adjacent conductive lines of the first spiral structure is less than or equal to 0.3 mm.

In some embodiments, the first helical structure is substantially parallel to the first electrostatic field enhancing element, and the first helical structure and the first electrostatic field enhancing element are spaced less than 2mm apart.

In some embodiments, the perpendicular projection of the first spiral structure is located entirely inside the first electrostatic field enhancing element.

In some embodiments, the detection device further comprises: a second helical thread structure having a first end and a second end; a second pass-through member; a second electrostatic field enhancing element adjacent to the second spiral structure, wherein the first end of the second spiral structure is coupled to the second electrostatic field enhancing element via the second pass-through element, and the second end of the second spiral structure is an open end; and a second nonconductive substrate interposed between the second spiral structure and the second electrostatic field enhancing element, wherein the second pass-through element penetrates the second nonconductive substrate.

In some embodiments, the second electrostatic field enhancing element is a second metal plane.

In some embodiments, the detection device further comprises: a connection portion coupled between the first end of the first spiral structure and the first end of the second spiral structure.

In some embodiments, the first spiral structure, the second spiral structure, and the connecting portion define a non-metallic notch area, and a vertical projection of an antenna element is completely located inside the non-metallic notch area, so that a radiation pattern of the antenna element is not adversely affected by a detection device.

Drawings

Fig. 1 is a top view of a detecting device according to an embodiment of the invention.

FIG. 2 is a cross-sectional view of a detecting device according to an embodiment of the present invention.

Fig. 3 is a top view of a detecting device according to an embodiment of the invention.

Fig. 4 is a side view of a mobile device according to an embodiment of the invention.

FIG. 5A is a top view of a conventional sensing board.

Fig. 5B is a top view showing another conventional sensing plate.

Fig. 6 is a top view of a detecting device according to an embodiment of the invention.

100. 200, 300, 600-detection device;

110-a first spiral configuration;

111-a first end of a first helical structure;

112 to a second end of the first spiral configuration;

120-a first pass-through element;

130-first electrostatic field enhancing element;

240-first non-conductor substrate;

350-proximity sensor;

400-a mobile device;

410-base shell;

420-keyboard frame;

430 antenna elements;

440-edge elements;

450-measuring probe;

520. 560-traditional sense plate;

660-a second spiral configuration;

661 to a first end of a second helical structure;

662-a second end of the second helical structure;

670 to a second pass-through member;

680 second electrostatic field enhancing elements;

685 a second non-conductor substrate;

690-connecting part;

695 to non-metallic notched areas;

d1 and D2;

DT-detectable distance;

w1-line width.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below.

Certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The term "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to achieve the basic technical result. In addition, the term "coupled" is used herein to encompass any direct or indirect electrical connection. Thus, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.

Fig. 1 is a top view of a Detection Device (Detection Device)100 according to an embodiment of the invention. The detection apparatus 100 can be applied to a Mobile Device (Mobile Device), for example: a Smart Phone (Smart Phone), a Tablet Computer (Tablet Computer), or a Notebook Computer (Notebook Computer). As shown in fig. 1, the detection apparatus 100 includes at least: a first Spiral Structure (Spiral Structure)110, a first through Element (via Element)120, and a first Electrostatic-Field Enhancement Element (Electrostatic-Field Enhancement Element) 130. In some embodiments, the first spiral structure 110, the first through element 120, and the first electrostatic field enhancing element 130 are made of metal materials, such as: copper, silver, aluminum, iron, or alloys thereof.

The first electrostatic field enhancing element 130 is adjacent to the first spiral structure 110. In some embodiments, the first electrostatic field enhancing element 130 is a first Metal Plane (Metal Plane). It should be noted that the term "adjacent" or "adjacent" in this specification may refer to a distance between two corresponding elements being less than a predetermined distance (e.g., 5mm or less), and may also include the case where two corresponding elements are in direct contact with each other (i.e., the distance is shortened to 0). The first spiral structure 110 has a first End 111 and a second End 112, wherein the first End 111 of the first spiral structure 110 is coupled to the first electrostatic field enhancing element 130 through the first through element 120, and the second End 112 of the first spiral structure 110 is an Open End (Open End). In detail, the first end 111 of the first spiral structure 110 may be located at an outermost periphery of the first spiral structure 110, and the second end 112 of the first spiral structure 110 may be located at a very center of the first spiral structure 110. The first spiral structure 110 may have a Vertical Projection (Vertical Projection) on the first electrostatic field enhancing element 130, and the Vertical Projection may be located completely inside the first electrostatic field enhancing element 130. In other words, the total area of the first spiral structure 110 is smaller than or equal to the total area of the first electrostatic field enhancing element 130.

In terms of operation principle, the combination of the first spiral structure 110, the first through-going element 120, and the first electrostatic field enhancing element 130 can be regarded as a composite Sensing plate (composite Sensing Pad). The first spiral structure 110 is designed such that the current thereon can only flow through a single path, thereby overcoming the current spreading problem of the conventional sensing board. The first electrostatic field enhancing element 130 may be used to increase the Directivity (Directivity) of the detection apparatus 100. In addition, according to the actual measurement result, if the first through element 120 is coupled to the first end 111 of the first spiral structure 110 to the first electrostatic field enhancement element 130, the technical effect of the first electrostatic field enhancement element 130 can be improved, so that the detectable distance (detective distance) of the detection apparatus 100 can be effectively increased. For example, the detectable distance of the detecting device 100 may be up to about 15mm, but is not limited thereto.

In some embodiments, the component dimensions and component settings of the detection device 100 can be as follows. The number of coil turns of the first spiral structure 110 may be greater than or equal to 3. The first spiral structure 110 may have a linewidth W1 of between 0.3mm and 0.5 mm. The spacing D1 between any two adjacent conductors of the first spiral structure 110 may be less than or equal to 0.3 mm. The length of the first electrostatic field enhancing element 130 may be less than or equal to 10mm, and the width of the first electrostatic field enhancing element 130 may also be less than or equal to 10 mm. The above parameter ranges are derived from the results of multiple experiments, which help to maximize the detectable distance of the detection device 100.

FIG. 2 is a cross-sectional view of a detecting device 200 according to an embodiment of the present invention. Fig. 2 is similar to fig. 1. In the embodiment of fig. 2, the detection apparatus 200 further comprises a first non-conductive Substrate (nonconducting Substrate) 240. For example, the first non-conductive Substrate 240 can be an FR4 (film retadant 4) Substrate or a Plastic Substrate (Plastic Substrate). The first non-conductive substrate 240 is disposed between the first spiral structure 110 and the first electrostatic field enhancing element 130, wherein the first spiral structure 110 is fixed on the first non-conductive substrate 240, and the first through-element 120 penetrates the first non-conductive substrate 240 and is coupled between the first spiral structure 110 and the first electrostatic field enhancing element 130. The first spiral structure 110, the first non-conductive substrate 240, and the first electrostatic field enhancing element 130 may be substantially parallel to each other, wherein the distance D2 between the first spiral structure 110 and the first electrostatic field enhancing element 130 (or the thickness of the first non-conductive substrate 240) may be less than 2mm, so as to improve the technical effect of the first electrostatic field enhancing element 130. The remaining features of the detecting device 200 of FIG. 2 are similar to those of the detecting device 100 of FIG. 1, so that the two embodiments can achieve similar operation effects.

Fig. 3 is a top view of a detecting device 300 according to an embodiment of the invention. Fig. 3 is similar to fig. 1. In the embodiment of fig. 3, the detection apparatus 300 further includes a Proximity Sensor (P-Sensor) 350, wherein the Proximity Sensor 350 is coupled to the first end 111 of the first spiral structure 110 and the first pass-through element 120. The proximity sensor 350 may detect any conductor elements in proximity using a composite sensing plate formed by the first spiral structure 110, the first through-going element 120, and the first electrostatic field enhancing element 130. For example, an Effective Capacitor (Effective Capacitor) may be formed between the composite sense plate and the conductive element, and the proximity sensor 350 may estimate the spacing between the composite sense plate and the conductive element by analyzing the Capacitance (Capacitance) of the Effective capacitors. The remaining features of the detecting device 300 of FIG. 3 are similar to those of the detecting device 100 of FIG. 1, so that the two embodiments can achieve similar operation effects.

Fig. 4 is a side view of a mobile device 400 according to an embodiment of the invention. In the embodiment of fig. 4, the mobile device 400 is a notebook computer, which at least includes a Base Housing (Base Housing)410, a Keyboard Frame (Keyboard Frame)420, an Antenna Element (Antenna Element)430, and an edge Element (EdgeElement) 440. The edge member 440 is connected between the keyboard frame 420 and the base housing 410. It should be understood that the keyboard frame 420 and the base housing 410 are commonly referred to as "C-piece" and "D-piece" respectively in the context of a notebook computer. The antenna element 430 is adjacent to the keyboard frame 420, and the detecting device 100 (or 200, 300) is disposed inside the base housing 410. When a Specific Absorption Rate (SAR) detection procedure is performed on the mobile device 400, a Measurement Probe 450 emits its maximum Power (Full Power) toward the base housing 410. If the measuring probe 450 is detected by the detecting device 100, the maximum distance between the measuring probe 450 and the base housing 410 can be regarded as the detectable distance DT of the detecting device 100. However, the present invention is not limited thereto. In other embodiments, the detectable distance DT may also refer to a maximum distance between the composite sensing plate of the detection apparatus 100 (or 200, 300) and any conductor to be detected (e.g., a metal element or a human body), within which the detection apparatus 100 can easily detect the presence of the conductor to be detected.

Fig. 5A is a top view of a conventional sensing board 520. The conventional sensing plate 520 exhibits a complete rectangular shape. According to actual measurement results, the conventional sensing plate 520 generally has a shorter detection distance for the corresponding detection device because the current diverged thereon flows in different directions, for example: only about 11 mm.

Fig. 5B is a top view showing another conventional sensing board 560. The conventional sensing plate 560 exhibits an incomplete rectangular shape. The indentations of the conventional sensing board 560 are occupied by other elements in the mobile device. According to actual measurement results, the conventional sensing plate 560 generally has a shorter detection distance for the corresponding detection device because the current thereon divergently flows in different directions and the total area is insufficient, for example: less than 10 mm.

Fig. 6 is a top view of a detecting device 600 according to an embodiment of the invention. Fig. 6 is similar to fig. 1, 2 and 3. In the embodiment of fig. 6, the detecting device 600 further includes a second spiral structure 660, a second through-member 670, a second electrostatic field enhancing Element 680, a second non-conductive substrate 685, and a Connection Element 690, wherein the second spiral structure 660, the second through-member 670, the second electrostatic field enhancing Element 680, and the Connection Element 690 are all made of metal. A second electrostatic field enhancing element 680 is adjacent to the second spiral structure 660. In some embodiments, second electrostatic field enhancing element 680 is a second metal plane. The second spiral structure 660 has a first end 661 and a second end 662, wherein the first end 661 of the second spiral structure 660 is coupled to the second electrostatic field enhancing element 680 via the second pass-through element 670, and the second end 662 of the second spiral structure 660 is an open end. The first end 661 of the second spiral structure 660 may be located at an outermost periphery of the second spiral structure 660 and the second end 662 of the first spiral structure 660 may be located at a very center of the second spiral structure 660. The second spiral structure 660 may have a vertical projection on the second electrostatic field enhancing element 680, and the vertical projection may be located completely inside the second electrostatic field enhancing element 680. The second non-conductor substrate 685 may be interposed between the second spiral structure 660 and the second electrostatic field enhancing element 680, wherein the second spiral structure 660 may be fixed on the second non-conductor substrate 685, and the second through-member 670 may penetrate the second non-conductor substrate 685 and be coupled between the second spiral structure 660 and the second electrostatic field enhancing element 680. To simplify the drawing, both the first non-conductive substrate 240 and the second non-conductive substrate 685 of fig. 6 are represented as transparent elements. The second spiral structure 660, the second non-conductor substrate 685 and the second electrostatic field enhancing element 680 may all be substantially parallel to each other (similar to that shown in fig. 2), wherein the distance between the second spiral structure 660 and the second electrostatic field enhancing element 680 (or the thickness of the second non-conductor substrate 685) may be less than 2 mm. In general, the first spiral structure 110 and the second spiral structure 660 may be symmetrically distributed along a central line of the detection apparatus 600. The connecting portion 690 may be substantially a straight bar shape. The connecting portion 690 is coupled between the first end 111 of the first spiral structure 110 and the first end 661 of the second spiral structure 660. That is, the connection portion 690 is coupled between the first through member 120 and the second through member 670 such that both the first spiral structure 110 and the second spiral structure 660 are coupled to the proximity sensor 350. Since the first spiral structure 110 and the second spiral structure 660 can share the proximity sensor 350, the detectable distance of the detection apparatus 600 can be further increased. In addition, the first spiral structure 110, the second spiral structure 660, and the connecting portion 690 may define a Non-metallic notch Region 695, and the Non-metallic notch Region 695 may be substantially rectangular, wherein the vertical projection of the antenna element 430 may be completely located inside the Non-metallic notch Region 695, so that the radiation pattern (radiation pattern) of the antenna element 430 is not adversely affected by the detecting apparatus 600. The remaining features of the detecting device 600 of FIG. 6 are similar to those of the detecting

devices

100, 200, 300 of FIGS. 1, 2, 3, so that these embodiments can achieve similar operation effects.

The present invention provides a novel detection device, which can increase the detectable distance by at least about 36% (e.g., from originally 11mm to 15mm) according to the actual measurement result even under the condition that the design space is limited by the surrounding elements, so that the probability that the corresponding mobile device can detect through the specific absorption rate is greatly increased.

It is noted that the above-mentioned device dimensions and device parameters are not limitations of the present invention. The designer can adjust these settings according to different needs. The detecting means of the present invention is not limited to the states illustrated in fig. 1 to 6. The present invention may include only any one or more features of any one or more of the embodiments of figures 1-6. In other words, not all illustrated features may be implemented in the detection apparatus of the present invention at the same time.

Ordinal numbers such as "first," "second," "third," etc., in the specification and claims are not necessarily in sequential order, but are merely used to identify two different elements having the same name.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A detection device, comprising:

a first helical thread structure having a first end and a second end;

a proximity sensor coupled to the first end of the first spiral structure;

a first through-element;

a first electrostatic field enhancement element adjacent to the first spiral structure, wherein the first end of the first spiral structure is coupled to the first electrostatic field enhancement element through the first through element, the second end of the first spiral structure is an open end, and the first electrostatic field enhancement element is used for increasing the directivity of the detection device; and

a first non-conductive substrate interposed between the first spiral structure and the first electrostatic field enhancing element, wherein the first through-element penetrates the first non-conductive substrate.

2. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein the first electrostatic field enhancing element is a first metal plane.

3. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein the first spiral structure has a line width between 0.3mm and 0.5 mm.

4. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein the spacing between any two adjacent conducting wires of the first spiral structure is less than or equal to 0.3 mm.

5. The detection apparatus of claim 1, wherein the first spiral structure is substantially parallel to the first electrostatic field enhancing element and the first spiral structure and the first electrostatic field enhancing element are spaced less than 2mm apart.

6. The detection apparatus of claim 1, wherein a vertical projection of the first spiral structure is located entirely inside the first electrostatic field enhancing element.

7. The detection apparatus of claim 1, further comprising:

a second helical thread structure having a first end and a second end;

a second pass-through member;

a second electrostatic field enhancing element adjacent to the second spiral structure, wherein the first end of the second spiral structure is coupled to the second electrostatic field enhancing element via the second pass-through element, and the second end of the second spiral structure is an open end; and

a second nonconductive substrate interposed between the second spiral structure and the second electrostatic field enhancing element, wherein the second pass-through element penetrates the second nonconductive substrate.

8. The detecting device for detecting the rotation of a motor rotor as claimed in claim 7, wherein the second electrostatic field enhancing element is a second metal plane.

9. The detection apparatus of claim 7, further comprising:

a connection portion coupled between the first end of the first spiral structure and the first end of the second spiral structure.

10. The detecting device for detecting the rotation of a motor rotor as claimed in claim 9, wherein the first spiral structure, the second spiral structure and the connecting portion define a non-metallic notch area, and a vertical projection of an antenna element is completely located inside the non-metallic notch area, so that the radiation pattern of the antenna element is not adversely affected by the detecting device.