CN2739603Y - Internal-inlay loop antenna tyre pressure detector - Google Patents
Internal-inlay loop antenna tyre pressure detector Download PDFInfo
- Publication number
- CN2739603Y CN2739603Y CN 200420013720 CN200420013720U CN2739603Y CN 2739603 Y CN2739603 Y CN 2739603Y CN 200420013720 CN200420013720 CN 200420013720 CN 200420013720 U CN200420013720 U CN 200420013720U CN 2739603 Y CN2739603 Y CN 2739603Y
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- CN
- China
- Prior art keywords
- antenna
- pressure detector
- tire pressure
- embedded
- tours
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an internal-inlay loop antenna tyre pressure detector which comprises a control unit arranged on a circuit base board, a detecting unit and a loop antenna. All the above elements are packed in a casing body, one end of the casing body is connected with an air nozzle which is used to be arranged on a tyre. The loop antenna comprises a first end part, a second end part and an antenna body. The first end part is fixed to the circuit base board ; the second end part and the first part end are arranged in space way; the antenna body is annularly connected between the first end part and the second end part along a rectangle route, and the antenna body is restricted by the casing body. The antenna body is positioned on the upper side of the circuit base board in the horizontal shape by a rack support of the first end part. Thus the internal-inlay loop antenna tyre pressure detector can improve the integral increment of the anternna and shorten the length of the antenna.
Description
[technical field]
The utility model relates to a kind of tire pressure detection device, particularly relates to a kind of tire pressure detector of embedded tours antenna.
[background technology]
Ginseng Fig. 1, a kind of tours antenna 91 of existing tire pressure detector 9 is to be installed on the circuit substrate 92, and this tire pressure detector 9 also comprises a control module 93 and a pressure detection device 94 that is installed on this circuit substrate 92, during use, by above-mentioned each element of a housing (figure does not show) encapsulation.In this example, existing tours antenna 91 adopt electric wires by circuit substrate 92 up spiral extension form.
Though, existing tours antenna 91 with spiral fashion directly to extension, can increase antenna length, in the hope of reducing the centre frequency of antenna, to meet present demand frequency, but, directly to the tours antenna 91 of spiral, for prolonging antenna length, amplification encapsulates its outer housing height and volume on the contrary, so increase case material cost and overall weight relatively, and, to consider based on the space, the annulus area of this tours antenna 91 is less, and directly be attached to the set-up mode on this circuit substrate 92, influence the result of use and the gain (Gain) of tours antenna 91 easily.
Ginseng Fig. 1 and Fig. 2, secondly, be gain (Gain) performance of understanding this tours antenna 91, the spy borrows an artificial antenna radiation pattern 90 (Radiation Pattern) to resolve its X, Y, each plane field pattern of Z and gain size this tours antenna 91, see Fig. 3, Fig. 4 and Fig. 5, when the centre frequency of this tours antenna 91 was 434MHz, the antenna gain maximal value that this moment, X-Z plane (plane), Y-Z plane (plane) and X-Y plane (plane) were produced was about-17dBi, wherein, E
θCurve representation distribute and E around the field pattern of X-axis (parallel Y-Z plane)
ψCurve then represent to distribute around the field pattern of Z axle (parallel X-Y plane), as seen, meet service condition though have the gain that spiral helicine tours antenna 91 produced now, still perfect inadequately.
[utility model content]
The purpose of this utility model is to relate to a kind of gain that improves, and shortens antenna length, to dwindle overall volume, weight, reaches the tire pressure detector of the embedded tours antenna that reduces manufacturing cost.
The tire pressure detector of a kind of embedded tours antenna of the present utility model, this tire pressure detector comprises the control module that is installed on the circuit substrate, a detecting unit, an and tours antenna, above-mentioned each component package is in a housing, and this housing one end connects a valve, for being installed in tire, this tours antenna comprises a first end, a second end, and an antenna body, it is characterized in that: this first end, be fixed on this circuit substrate; This second end is to be provided with separately with this first end; And this antenna body, be along the rectangle route around being engaged between this first end and this second end, limited by this housing, and by the support of the frame of this first end and horizontal being positioned at above this circuit substrate.
The tire pressure detector of described embedded tours antenna is characterized in that: this antenna body and this first end are perpendicular abutment.
The tire pressure detector of described embedded tours antenna is characterized in that: this antenna body is to be embedded in this enclosure interior.
The tire pressure detector of described embedded tours antenna is characterized in that: this antenna body is that one is incorporated on this housing.
The tire pressure detector of described embedded tours antenna is characterized in that: this antenna body along the rectangle route curved around each bent angle be circular-arc.
The tire pressure detector of described embedded tours antenna is characterized in that: this second end is to be fixed on this circuit substrate.
The tire pressure detector of described embedded tours antenna is characterized in that: this antenna body and this circuit substrate be 8mm at interval.
The tire pressure detector of embedded tours antenna of the present utility model can improve gain, and shortens antenna length, dwindling overall volume, weight, and can reduce manufacturing cost.
[description of drawings]
Be elaborated below by most preferred embodiment and accompanying drawing tire pressure detector to embedded tours antenna of the present utility model, in the accompanying drawing:
Fig. 1 is a combination stereogram, and existing a kind of tire pressure detector with tours antenna is described;
Fig. 2 is a stereographic map, and an artificial antenna radiation pattern is described;
Fig. 3 is a curve map, illustrates that the field pattern on the X-Z plane of this field pattern distributes;
Fig. 4 is a curve map, illustrates that the field pattern on the Y-Z plane of this field pattern distributes;
Fig. 5 is a curve map, illustrates that the field pattern of the X-Y plane of this field pattern distributes;
Fig. 6 is a stereographic map, and the preferred embodiment of the tire pressure detector of embedded tours antenna of the present utility model is described;
Fig. 7 is a stereographic map, and an artificial antenna radiation pattern is described;
Fig. 8 is a curve map, illustrates that the field pattern on this X-Z plane distributes;
Fig. 9 is a curve map, illustrates that the field pattern on this Y-Z plane distributes;
Figure 10 is a curve map, illustrates that the field pattern of this X-Y plane distributes;
Figure 11 is a plane perspective view, and the top view in kind of a tire pressure detector is described; And
Figure 12 is a lateral side view of this tire pressure detector.
[embodiment]
Ginseng Fig. 6, Figure 11 and Figure 12, one preferred embodiment of the tire pressure detector of the embedded tours antenna of the utility model, this tire pressure detector comprises a control module 2, a detecting unit 3 that is installed on the circuit substrate 1, an and tours antenna 4, above-mentioned each element of one housing, 5 encapsulation, and housing 5 one ends are connected with a valve 6, for being installed in tire (figure does not show).This detecting unit 3 is for detecting tire pressure, temperature and acceleration ... Deng.This tours antenna 4 forms for the curved coiled type of electric wire, and comprises a first end 41, a second end 42, and an antenna body 43.
This first end 41 is with this second end 42 and uprightly is fixed at intervals on this circuit substrate 1.
This antenna body 43 is around being engaged on 42 of this first end 41 and this second ends along the elongated rectangular shape route, by these housing 5 restrictions, and high horizontal being positioned on this circuit substrate 1 of the bracing frame of borrowing this first and second end 41,42, this antenna body 43 is perpendicular abutment with this first and second end 41,42, and along the rectangle route curved around each bent angle 431 be circular-arc.And this antenna body 43 is when this housing 5 of ejection formation, and one is embedded in this housing 5 inside.
In the present embodiment, this control module 2 comprises the integrated circuit 21 that has the various actions program of carrying out this tire pressure detector in, and the battery 22 of a power supply.
As for feature of the present utility model partly, this tours antenna 4 is 41,42 high housing 5 inside of imbedding by first and second end, and horizontal being positioned on this circuit substrate 1, can avoid producing circuits whereby and ill effect such as disturb mutually, and then can effectively promote the gain (Gain) of tours antenna 4 with this integrated circuit 21.And this antenna body 43 by 41,42 of first and second ends high after, wire rod be along the horizontal ring ring of the circuit of elongated rectangular shape around, therefore under limited housing 5 spaces, can reach suitable antenna 4 length, and increase loop area (loop Area), and then reach the centre frequency that needs, and promote antenna gain (AntennaGain) significantly.
Ginseng Fig. 7, for the more existing really tours antenna of gain (Gain) that confirms tours antenna 4 of the present utility model also high, also good, borrow an artificial antenna radiation pattern 40 (Radiation Pattern) to resolve its X this tours antenna 4 equally, Y, the field pattern and the change in gain on Z plane (Plane), join Fig. 8 again, Fig. 9 and Figure 10, result after tested, when the centre frequency of this tours antenna 4 is 434MHz, the maximum gain of X-Z plane field intensity this moment (field pattern intensity) can reach 6.66dBi, the maximum gain of Y-Z plane field intensity (field pattern intensity) reaches 7.14dBi, the maximum gain of X-Y plane field intensity (field pattern intensity) is then up to 7.36dBi, generally, the entire gain of this tours antenna 4 (Gain) performance can reach 7.67dBi, E among the figure
θCurve representation distribute and E around the field pattern of X-axis (parallel Y-Z plane)
ψCurve then represent to distribute around the field pattern of Z axle (parallel X-Y plane), through comparative result, the gain of visible tours antenna 4 of the present utility model (Gain) can significantly enhance really, whereby, can promote the using character of this tire pressure detector.
Conclude above-mentioned, the tire pressure detector of embedded tours antenna of the present utility model, can obtain following many effects and advantage really:
One, this antenna body 43 is higher than on the circuit substrate 1 by this 41,42 of first and second end, be considered as liftoff (Ground: earth terminal) far away, so, can reduce the influence that the antenna field intensity is subjected to ground plane, and effectively improve the effect of antenna gain.
Two, compared to existing spiral helicine tours antenna, the utility model along the elongated rectangular shape circuit extend be the ring ring around antenna body 43, it is maximum that antenna loop area (Loop Area) can reach, and it is horizontal curved around the structural design of extending, can shorten antenna length, in the hope of the gain (Gain) that in the finite space, enhances antenna.
Three, extend and unsettled tours antenna compared to existing spiral fashion is vertical, the utility model is when ejection molded housing 5, antenna body 43 one are embedded in this housing 5, so, make antenna body 43 more firm, and cooperate housing 5 material characteristics to obtain preferable impedance matching, can improve the stability of frequency.
Four, the high antenna body 43 that is provided with of frame can borrow the position of soaring to settle control module 2 and pressure detection device 3, so, can reduce housing 5 volumes relatively, also can reduce housing 5 material costs and overall weight.
Five, this tours antenna 4 can avoid producing point effect by the setting of leading each circular bent angle 431, whereby, when these tours antenna 4 transmission frequencies, can lower noise and disturb.
Ginseng Fig. 6 and Figure 12, what deserves to be mentioned is, in the present embodiment, in the restriction of the application space of reality down, this antenna body 43 is that 8mm is an optimum condition with this circuit substrate 1 interval I, certainly, this spacing I is not a level altitude, when the length that changes this antenna body 43, and then when changing the transmission frequency of tire pressure detector, the optimal spacing of antenna body 43 and circuit substrate 1 is then looked above-mentioned variation and is done the appropriateness increase and decrease.
In addition, though in this preferred embodiment, be that first and second end 41,42 all is fixed on the circuit substrate 1, in fact, as long as wherein an end (41 or 42) electrically are fixed on this circuit substrate 1, just can reach the high application target of frame, just, this first and second end 41,42 is fixed on the circuit substrate 1 simultaneously, is made the high tours antenna 4 that is provided with of frame also want firm.
Claims (7)
1. the tire pressure detector of an embedded tours antenna, this tire pressure detector comprises the control module that is installed on the circuit substrate, a detecting unit, an and tours antenna, above-mentioned each component package is in a housing, and this housing one end connects a valve, for being installed in tire, this tours antenna comprises a first end, a second end, and antenna body, it is characterized in that:
This first end is fixed on this circuit substrate;
This second end is to be provided with separately with this first end; And
This antenna body, be along the rectangle route around being engaged between this first end and this second end, limited by this housing, and by the support of the frame of this first end and horizontal this circuit substrate top that is positioned at.
2. the tire pressure detector of embedded tours antenna as claimed in claim 1, it is characterized in that: this antenna body and this first end are perpendicular abutment.
3. the tire pressure detector of embedded tours antenna as claimed in claim 1, it is characterized in that: this antenna body is to be embedded in this enclosure interior.
4. the tire pressure detector of embedded tours antenna as claimed in claim 3, it is characterized in that: this antenna body is that one is incorporated on this housing.
5. the tire pressure detector of embedded tours antenna as claimed in claim 1 is characterized in that: this antenna body along the rectangle route curved around each bent angle be circular-arc.
6. the tire pressure detector of embedded tours antenna as claimed in claim 1, it is characterized in that: this second end is to be fixed on this circuit substrate.
7. the tire pressure detector of embedded tours antenna as claimed in claim 1 is characterized in that: this antenna body and this circuit substrate interval 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420013720 CN2739603Y (en) | 2004-09-30 | 2004-09-30 | Internal-inlay loop antenna tyre pressure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420013720 CN2739603Y (en) | 2004-09-30 | 2004-09-30 | Internal-inlay loop antenna tyre pressure detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739603Y true CN2739603Y (en) | 2005-11-09 |
Family
ID=35354669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420013720 Expired - Fee Related CN2739603Y (en) | 2004-09-30 | 2004-09-30 | Internal-inlay loop antenna tyre pressure detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739603Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515665B (en) * | 2008-02-19 | 2013-02-20 | 深圳富泰宏精密工业有限公司 | Antenna coupled system |
| CN104617057B (en) * | 2013-11-05 | 2018-07-31 | 矽品精密工业股份有限公司 | Electronic package |
| CN109203871A (en) * | 2017-07-06 | 2019-01-15 | 深圳市道通科技股份有限公司 | Tyre pressure sensor |
-
2004
- 2004-09-30 CN CN 200420013720 patent/CN2739603Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515665B (en) * | 2008-02-19 | 2013-02-20 | 深圳富泰宏精密工业有限公司 | Antenna coupled system |
| CN104617057B (en) * | 2013-11-05 | 2018-07-31 | 矽品精密工业股份有限公司 | Electronic package |
| CN109203871A (en) * | 2017-07-06 | 2019-01-15 | 深圳市道通科技股份有限公司 | Tyre pressure sensor |
| CN109203871B (en) * | 2017-07-06 | 2023-11-24 | 深圳市道通科技股份有限公司 | Tyre pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |