CN203932304U - A kind of bluetooth tire pressure transmitter antenna - Google Patents
A kind of bluetooth tire pressure transmitter antenna Download PDFInfo
- Publication number
- CN203932304U CN203932304U CN201420291139.1U CN201420291139U CN203932304U CN 203932304 U CN203932304 U CN 203932304U CN 201420291139 U CN201420291139 U CN 201420291139U CN 203932304 U CN203932304 U CN 203932304U
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- Prior art keywords
- radio frequency
- antenna
- tire pressure
- pressure transmitter
- electrically connected
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Abstract
The utility model provides a kind of bluetooth tire pressure transmitter antenna, and described bluetooth tire pressure transmitter antenna comprises: the anodal shell fragment of button cell, as the antenna carrier of described bluetooth tire pressure transmitter; Antenna optimized circuit, is arranged between the anodal shell fragment of described button cell and chip radio-frequency (RF) signal input end, for ensureing that the radiofrequency signal normal transmission receiving by the anodal shell fragment of described button cell is to chip radio-frequency (RF) signal input end.The utility model utilizes on tire pressure transmitter existing structure as the working material of Bluetooth antenna, simultaneously by optimized circuit additional on circuit, allow bluetooth tire pressure transmitter in the situation that not increasing antenna cost, realize the communication link of bluetooth in best mode, also well avoided possible abnormal conditions to introduce simultaneously.
Description
Technical field
The utility model belongs to electronic circuit technology field, relates to a kind of tire pressure transmitter antenna, particularly relates to a kind of bluetooth tire pressure transmitter antenna.
Background technology
Tire Pressure Monitor System (TPMS) is that one can detect automatically to air pressure of automobile tire, temperature, and the early warning system that abnormal tyre situation is reported to the police.TPMS system can be divided into two kinds of indirect type and direct-type.Indirect type is to carry out the rotating speed difference between comparison wheel by the wheel speed sensors of automobile ABS system, to reach the object that monitors tire pressure.Direct-type utilization is arranged on each pressure sensor of taking turns tyre cavity directly measures the air pressure of tire, and is transmitted on the receiver that is arranged on bridge by wireless-modulated.The following two schemes of the more employing of direct-type TPMS transmitter module at present: one is battery+single-chip microcomputer+transducer+radio frequency chip, and another kind is transducer+radio frequency chip of battery+inner integrated MCU (microcontroller).Front a kind of scheme because integrated level is low, volume and power consumption large and eliminated gradually the product design form that rear a kind of scheme is main flow on Vehicles Collected from Market by market.Traditional tire pressure transmitter is owing to being operated in 433Mhz frequency, and its radiofrequency signal wavelength is oversize, in the design of tire pressure transmitter, can only adopt large-sized spring antenna or longer copper cash spiral winding mode to realize final Antenna Design.
The radiofrequency signal wavelength of traditional tire pressure transmitter is approximately 6 times of left and right of bluetooth 2.4Ghz.The operating frequency of bluetooth low-power consumption communications protocol is at 2.4Ghz, mutual for guaranteeing the communication of data, needs a special bluetooth antenna element, guarantees the transmission stabilization efficiency of data.At present in traditional blue tooth products design, generally can according to mechanism size and PCB bulk different situations, select glue rod shell fragment antenna, paster Bluetooth antenna or PCB microstrip line etc. to apply.But this application can increase the cost of tire pressure transmitter undoubtedly.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of bluetooth tire pressure transmitter antenna, for solving existing tire pressure transmitter antenna size greatly and the problem of increase cost.
For achieving the above object and other relevant objects, the utility model provides a kind of bluetooth tire pressure transmitter antenna, and described bluetooth tire pressure transmitter antenna comprises: the anodal shell fragment of button cell, as the antenna carrier of described bluetooth tire pressure transmitter; Antenna optimized circuit, is arranged between the anodal shell fragment of described button cell and chip radio-frequency (RF) signal input end, for ensureing that the radiofrequency signal normal transmission receiving by the anodal shell fragment of described button cell is to chip radio-frequency (RF) signal input end.
Preferably, described antenna optimized circuit comprises electrostatic protection device, direct current isolating device, radio frequency antenna matching circuit and reverse isolation device; Described electrostatic protection device is electrically connected with the anodal shell fragment of described button cell, for avoiding electrostatic signal to enter into described chip radio-frequency (RF) signal input end; Described direct current isolating device is electrically connected with described electrostatic protection device and radio frequency antenna matching circuit respectively, for avoiding the high-voltage direct-current electricity of button cell positive pole to be circulated into described chip radio-frequency (RF) signal input end; Described radio frequency antenna matching circuit is electrically connected with described chip radio-frequency (RF) signal input end by impedance line, for optimizing antenna pattern; Described reverse isolation device is electrically connected with the anodal shell fragment of described button cell, for radiofrequency signal and direct current reverse isolation, avoids radiofrequency signal to be attenuated.
Preferably, described electrostatic protection device comprises esd protection device; One end of described esd protection device is electrically connected with the anodal shell fragment of described button cell, other end ground connection.
Preferably, described direct current isolating device comprises isolation capacitance; One end of described isolation capacitance is electrically connected with the anodal shell fragment of described button cell, and the other end is electrically connected with described radio frequency antenna matching circuit.
Preferably, described radio frequency antenna matching circuit comprises radio frequency inductive, the first radio frequency electric capacity and the second radio frequency electric capacity; One end of described radio frequency inductive is electrically connected with described direct current isolating device, and the other end is electrically connected with described chip radio-frequency (RF) signal input end; Described first one end of radio frequency electric capacity and one end of described radio frequency inductive are electrically connected, other end ground connection; Described second one end of radio frequency electric capacity and the other end of described radio frequency inductive are electrically connected, other end ground connection.
Preferably, described reverse isolation device comprises the second radio frequency inductive; One end of described the second radio frequency inductive is electrically connected with the anodal shell fragment of described button cell, and the other end connects power supply.
As mentioned above, bluetooth tire pressure transmitter antenna described in the utility model, has following beneficial effect:
The utility model utilizes on tire pressure transmitter existing anode shell fragment as the working material of Bluetooth antenna, simultaneously by optimized circuit additional on circuit, allow bluetooth tire pressure transmitter in the situation that not increasing antenna cost, realize the communication link of bluetooth in best mode, also well avoided possible abnormal conditions to introduce simultaneously.
Brief description of the drawings
Fig. 1 is the structured flowchart of bluetooth tire pressure transmitter antenna described in the utility model.
Fig. 2 is a kind of particular circuit configurations schematic diagram of bluetooth tire pressure transmitter antenna described in the utility model.
Element numbers explanation
100 bluetooth tire pressure transmitter antenna
The anodal shell fragment of 110 button cells
120 antenna optimized circuits
121 electrostatic protection devices
122 direct current isolating devices
123 radio frequency antenna matching circuit
124 reverse isolation devices
125 impedance lines
130 chip radio-frequency (RF) signal input end
Embodiment
By specific instantiation, execution mode of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.The utility model can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present utility model in a schematic way, satisfy and only show with assembly relevant in the utility model in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the utility model is elaborated.
Embodiment
The utility model also provides a kind of bluetooth tire pressure transmitter antenna, and as shown in Figure 1, described bluetooth tire pressure transmitter antenna 100 comprises: the anodal shell fragment 110 of button cell, antenna optimized circuit 120.
The anodal shell fragment 110 of described button cell is as the antenna carrier of described bluetooth tire pressure transmitter.
Described antenna optimized circuit 120 is arranged between the anodal shell fragment 110 of described button cell and chip radio-frequency (RF) signal input end 110, for ensureing that the radiofrequency signal normal transmission receiving by the anodal shell fragment of described button cell is to chip radio-frequency (RF) signal input end.
Bluetooth tire pressure transmitter antenna shown in Fig. 1 is applied to external tyre pressure transmitter, and the concrete structure of its antenna optimized circuit can be referring to Fig. 2, but the protection range of antenna optimized circuit 120 described in the utility model includes but not limited to the circuit structure shown in Fig. 2.Everyly all be included in protection range of the present utility model according to the optimized circuit of principle design of the present utility model.
Further, as shown in Figure 2, described antenna optimized circuit 120 comprises electrostatic protection device 121, direct current isolating device 122, radio frequency antenna matching circuit 123 and reverse isolation device 124.
Described electrostatic protection device 121 is electrically connected with the anodal shell fragment 110 of described button cell, for avoiding electrostatic signal to enter into described chip radio-frequency (RF) signal input end.Further, described electrostatic protection device 121 comprises esd protection device ESD1; One end of described esd protection device ESD1 is electrically connected with the anodal shell fragment 110 of described button cell, other end ground connection.The electrostatic defending that ESD1 goes out for antenna feed point (being the contact feedback point of the anodal shell fragment 110 of button cell), avoids electrostatic signal to enter into chip radio frequency input pin (being chip radio-frequency (RF) signal input end), breaks chip.Electrostatic protection device 121 described in the utility model includes but not limited to esd protection device, and the every device that can realize electrostatic protection or circuit all belong to the protection range of electrostatic protection device 121 described in the utility model.
Described direct current isolating device 122 is electrically connected with described electrostatic protection device 121 and radio frequency antenna matching circuit 123 respectively, for avoiding the high-voltage direct-current electricity of button cell positive pole to be circulated into described chip radio-frequency (RF) signal input end.Further, described direct current isolating device 122 comprises isolation capacitance C1; One end of described isolation capacitance C1 is electrically connected with the anodal shell fragment 110 of described button cell, and the other end is electrically connected with described radio frequency antenna matching circuit 123.Isolation capacitance C1, for direct current isolation, avoids the high-voltage direct-current electricity of button cell positive pole to be circulated into chip radio frequency input pin, defective chip.Direct current isolating device 122 described in the utility model includes but not limited to isolation capacitance C1, and the every device that can realize direct current isolation or circuit all belong to the protection range of direct current isolating device 122 described in the utility model.
Described radio frequency antenna matching circuit 123 is electrically connected with described chip radio-frequency (RF) signal input end 130 by impedance line 125, for optimizing antenna pattern.Further, described radio frequency antenna matching circuit 123 comprises radio frequency inductive L1, the first radio frequency electric capacity C2 and the second radio frequency electric capacity C3; One end of described radio frequency inductive L1 is electrically connected with described direct current isolating device 122, and the other end is electrically connected with described chip radio-frequency (RF) signal input end 130; One end of described the first radio frequency electric capacity C2 is electrically connected with one end of described radio frequency inductive L1, other end ground connection; One end of described the second radio frequency electric capacity C3 is electrically connected with the other end of described radio frequency inductive L1, other end ground connection.L1, C2, and C3 is the antenna-matching circuit that the present embodiment is enumerated, for antenna pattern optimization.What the present embodiment middle impedance line 125 adopted is 50 ohmage lines, guarantees the impedance continuity of antenna traces, avoids the impedance signal attenuation causing of jumping.The large I of resistance of impedance line 125 is selected according to practical application.Radio frequency antenna matching circuit 123 described in the utility model includes but not limited to radio frequency inductive L1, the first radio frequency electric capacity C2 and the second radio frequency electric capacity C3, and the every device that can realize radio frequency antenna matching or circuit all belong to the protection range of radio frequency antenna matching circuit 123 described in the utility model.
Described reverse isolation device 124 is electrically connected with the anodal shell fragment 110 of described button cell, for radiofrequency signal and direct current reverse isolation, avoids radiofrequency signal to be attenuated.Further, described reverse isolation device 124 comprises the second radio frequency inductive L2; One end of described the second radio frequency inductive L2 is electrically connected with the anodal shell fragment 110 of described button cell, and the other end connects power vd D.The second radio frequency inductive L2, for radiofrequency signal and direct current reverse isolation, makes radio-frequency line become high-impedance state, avoids radiofrequency signal to be attenuated.Reverse isolation device 124 described in the utility model includes but not limited to the second radio frequency inductive L2, and the every device that can realize reverse isolation or circuit all belong to the protection range of reverse isolation device 124 described in the utility model.
The utility model mainly coordinates the existing structure mold of bluetooth tire pressure transmitter, based on the short advantage of Bluetooth signal wavelength, utilize on transmitter existing anode shell fragment as the working material of Bluetooth antenna, simultaneously by special circuit additional on circuit (being antenna optimized circuit), both realized the laser propagation effect of Bluetooth antenna, do not affect again the normal function of original spring plate of button battery, for bluetooth tire pressure transmitter provides one to stablize, physical communication link reliably, while having guaranteed transmitter work, its broadcast data, handshake authentication, interconnected operation can be effectively executed.
The utility model utilizes on tire pressure transmitter existing anode shell fragment as the working material of Bluetooth antenna, simultaneously by optimized circuit additional on circuit, allow bluetooth tire pressure transmitter in the situation that not increasing antenna cost, realize the communication link of bluetooth in best mode, also well avoided possible abnormal conditions to introduce simultaneously.
Major advantage of the present utility model is as follows:
1, without adding special Bluetooth antenna, save hardware cost and assembly cost.
2, avoided introducing the chip damage causing by static by electrostatic protection device.
3,, by alternating current-direct current isolated component (direct current isolating device), avoided the chip that possible high voltage induction causes to damage.
4, utilize existing large-area metal carrier, realized the optimum working efficiency of Bluetooth antenna, and realized stable communication link effect.
In sum, the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (6)
1. a bluetooth tire pressure transmitter antenna, is characterized in that, described bluetooth tire pressure transmitter antenna comprises:
The anodal shell fragment of button cell, as the antenna carrier of described bluetooth tire pressure transmitter;
Antenna optimized circuit, is arranged between the anodal shell fragment of described button cell and chip radio-frequency (RF) signal input end, for ensureing that the radiofrequency signal normal transmission receiving by the anodal shell fragment of described button cell is to chip radio-frequency (RF) signal input end.
2. bluetooth tire pressure transmitter antenna according to claim 1, is characterized in that: described antenna optimized circuit comprises electrostatic protection device, direct current isolating device, radio frequency antenna matching circuit and reverse isolation device; Described electrostatic protection device is electrically connected with the anodal shell fragment of described button cell, for avoiding electrostatic signal to enter into described chip radio-frequency (RF) signal input end; Described direct current isolating device is electrically connected with described electrostatic protection device and radio frequency antenna matching circuit respectively, for avoiding the high-voltage direct-current electricity of button cell positive pole to be circulated into described chip radio-frequency (RF) signal input end; Described radio frequency antenna matching circuit is electrically connected with described chip radio-frequency (RF) signal input end by impedance line, for optimizing antenna pattern; Described reverse isolation device is electrically connected with the anodal shell fragment of described button cell, for radiofrequency signal and direct current reverse isolation, avoids radiofrequency signal to be attenuated.
3. bluetooth tire pressure transmitter antenna according to claim 2, is characterized in that: described electrostatic protection device comprises esd protection device; One end of described esd protection device is electrically connected with the anodal shell fragment of described button cell, other end ground connection.
4. bluetooth tire pressure transmitter antenna according to claim 2, is characterized in that: described direct current isolating device comprises isolation capacitance; One end of described isolation capacitance is electrically connected with the anodal shell fragment of described button cell, and the other end is electrically connected with described radio frequency antenna matching circuit.
5. bluetooth tire pressure transmitter antenna according to claim 2, is characterized in that: described radio frequency antenna matching circuit comprises radio frequency inductive, the first radio frequency electric capacity and the second radio frequency electric capacity; One end of described radio frequency inductive is electrically connected with described direct current isolating device, and the other end is electrically connected with described chip radio-frequency (RF) signal input end; Described first one end of radio frequency electric capacity and one end of described radio frequency inductive are electrically connected, other end ground connection; Described second one end of radio frequency electric capacity and the other end of described radio frequency inductive are electrically connected, other end ground connection.
6. bluetooth tire pressure transmitter antenna according to claim 2, is characterized in that: described reverse isolation device comprises the second radio frequency inductive; One end of described the second radio frequency inductive is electrically connected with the anodal shell fragment of described button cell, and the other end connects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291139.1U CN203932304U (en) | 2014-06-03 | 2014-06-03 | A kind of bluetooth tire pressure transmitter antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291139.1U CN203932304U (en) | 2014-06-03 | 2014-06-03 | A kind of bluetooth tire pressure transmitter antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932304U true CN203932304U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291139.1U Expired - Fee Related CN203932304U (en) | 2014-06-03 | 2014-06-03 | A kind of bluetooth tire pressure transmitter antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009283A (en) * | 2014-06-03 | 2014-08-27 | 上海纵目科技有限公司 | Antenna of Bluetooth tire pressure transmitter |
| CN107274649A (en) * | 2017-06-21 | 2017-10-20 | 国网山东省电力公司诸城市供电公司 | A kind of self-organization of network formula power information central system and method |
-
2014
- 2014-06-03 CN CN201420291139.1U patent/CN203932304U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009283A (en) * | 2014-06-03 | 2014-08-27 | 上海纵目科技有限公司 | Antenna of Bluetooth tire pressure transmitter |
| CN104009283B (en) * | 2014-06-03 | 2017-05-10 | 纵目科技（上海）股份有限公司 | Antenna of Bluetooth tire pressure transmitter |
| CN107274649A (en) * | 2017-06-21 | 2017-10-20 | 国网山东省电力公司诸城市供电公司 | A kind of self-organization of network formula power information central system and method |
| CN107274649B (en) * | 2017-06-21 | 2019-06-28 | 国网山东省电力公司诸城市供电公司 | A kind of self-organization of network formula power information central system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201201 room B, block, No. 977, Feng Lu, Pudong New Area, Shanghai, China Patentee after: Zongmu Technology (Shanghai) Limited by Share Ltd Address before: 201201 room B, block, No. 977, Feng Lu, Pudong New Area, Shanghai, China Patentee before: Shanghai Zongmu Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |