CN203014937U - Extension device and extended mobile system - Google Patents
Extension device and extended mobile system Download PDFInfo
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- CN203014937U CN203014937U CN 201220750380 CN201220750380U CN203014937U CN 203014937 U CN203014937 U CN 203014937U CN 201220750380 CN201220750380 CN 201220750380 CN 201220750380 U CN201220750380 U CN 201220750380U CN 203014937 U CN203014937 U CN 203014937U
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Abstract
The utility model provides an extension device and an extended mobile system. The extension device is used for a mobile terminal; the extension device comprises a sensor, an interface control unit and an audio interface; the sensor is used for generating a magnetic field signal and transmitting the magnetic field signal to the interface control unit; the interface control unit is used for modulating the magnetic field signal into a modulated magnetic field signal and transmitting the modulated magnetic field signal into the audio interface; and the audio interface is used for transmitting the modulated magnetic field signal to the audio interface of the mobile terminal. The utility model further provides an extended mobile system using the extension device. Defects that middle-end and low-end mobile phones are not provided with electronic compasses, or a geomagnetic sensor cannot be placed due to the structure design can be overcome, and the middle-end and low-end mobile phones cannot be restricted by the limitation of the mobile terminal structure design, and on the premise that the structure design is not changed, the compass function can be realized through the extension device.
Description
Technical field
The utility model relates to a kind of expanding unit, particularly a kind of expanding unit and the expansion mobile system that uses this expanding unit.
Background technology
Economical makes rapid progress, the raising of people's living standard, the chance that people go out, travel increases greatly, and people increase gradually to the demand of the locality of real-time understanding oneself, along with constantly popularizing of smart mobile phone, the mobile terminal that contains digital compass function is constantly released.Yet a lot of mobile terminals are still arranged on the market due to a variety of causes having electronic compass functional not, if any product orientation and cost reason, most of low and middle-end mobile phones and palmtop PC (PAD) are having electronic compasses not, the reason that structural design in industrial design (ID) is also arranged, cause near some Mobile terminal main board, large-area ferrous material being arranged, cause to place geomagnetic sensor.Mobile terminal is the having electronic compass functional not, and the user generally uses independent external traditional compass or digital compass, and this class compass can't coordinate with mobile terminal realizes some more senior location experience, and this class compass requires high to horizontality.
The utility model content
The technical problems to be solved in the utility model is in order to overcome not having electronic compass of prior art low and middle-end mobile phone, perhaps can't place the defective of geomagnetic sensor due to Structure Designing Problem, provide a kind of low and middle-end mobile phone that makes to realize expanding unit and the expansion mobile system of the function of compass by this expanding unit.
The utility model is to solve above-mentioned technical problem by following technical proposals:
The utility model provides a kind of expanding unit, and this expanding unit is used for a mobile terminal, and this expanding unit includes a transducer, an interface control unit and an audio interface; This transducer is connected with this interface control unit, and this interface control unit is connected with this audio interface;
This transducer is used for generating a field signal, and this field signal is sent to this interface control unit;
This interface control unit is used for this field signal is modulated to a modulated magnetic field signal, and this modulated magnetic field signal is sent to this audio interface;
This audio interface is used for this modulated magnetic field signal is sent to the audio interface of this mobile terminal;
This audio interface also is used for a modulator control signal of the audio interface transmission of this mobile terminal is sent to this interface control unit;
This interface control unit also is used for this modulator control signal is demodulated into a control signal, and this control signal is sent to this transducer;
This transducer also is used for generating this field signal or stopping generating this field signal according to this control signal.
Because the earth magnetic field is objective reality always, the effect of this transducer is namely to detect and gather the direction of obtaining this earth magnetic field, and produces the corresponding signal of telecommunication, i.e. this field signal according to the direction in this earth magnetic field.
By this audio interface, this modulated magnetic field signal is sent to the audio interface of this mobile terminal due to this expanding unit, therefore this field signal need to through the signal modulation of this interface control unit, be modulated into this field signal originally and can pass through this modulated magnetic field signal that this audio interface sends.
It will be appreciated by those skilled in the art that, make this transducer can normal operation, and realize corresponding function, need to the register of this transducer be configured, also need as required this transducer to be carried out initialization, so this control signal naturally has the register of this transducer and this transducer is configured and initialized control command.
Preferably, this transducer is geomagnetic sensor.
Can also use other can obtain the transducer of earth magnetic field signal in the utility model except geomagnetic sensor.
Preferably, the audio interface of this mobile terminal is 4 segmentation earphone interfaces, and this audio interface is the 4 segmentation Earphone joints corresponding with this 4 segmentation earphone interface, and this 4 segmentation earphone interface is connected with this 4 segmentation Earphone joint.
Because the audio interface of this mobile terminal is 4 segmentation earphone interfaces, therefore this audio interface should be the 4 segmentation Earphone joints corresponding with this 4 segmentation earphone interface, so just as earphone inserts the mobile terminal earphone interface, by this 4 segmentation Earphone joint is inserted this 4 segmentation earphone interface, realize being connected of this expanding unit and this mobile terminal.
Similarly, when the audio interface of this audio interface and this mobile terminal is this 4 segmentation earphone interface, can this audio interface be connected with the audio interface of this mobile terminal by a mutual-recording line.
Preferably, this interface control unit is modulation-demodulation circuit.
Owing to being by audio interface sending and receiving signal, so this modulation-demodulation circuit is in audio domain, signal to be carried out modulation /demodulation.
Preferably, this modulation-demodulation circuit is amplitude modulation keying (ASK) modulation-demodulation circuit.
ASK is a kind of Digital Modulation pattern, i.e. amplitude modulation keying.The mode of ASK modulation is as follows: carrier wave is on-off under the control of communication data signal 1 or 0, is 1 state carrier wave connection at signal, has this moment carrier wave to occur on transmission channel; Be that under 0 state, carrier wave is turned off at signal, on this moment transmission channel, carrierfree transmits.Can restore 1 and 0 of digital signal according to having or not of carrier wave at mobile terminal so.Described key also is, the frequency of carrier wave is the bandwidth (being generally 20KHz) that requires less than audio signal, because the signal that the audio interface of mobile terminal can only the processing audio frequency range.
Preferably, this transducer is connected with this interface control unit by I2C interface or SPI interface.
I2C(Inter-Integrated Circuit) bus is the twin wire universal serial bus by PHILIPS Co.'s exploitation, is used for connecting microcontroller and ancillary equipment thereof.It is the extensive a kind of bus standard that adopts in microelectronics Control on Communication field.It is a kind of special shape of synchronous communication, has an interface line few, and control mode is simple, and the device package form is little, and traffic rate is than advantages of higher.
SPI (Serial Peripheral Interface-Serial Peripheral Interface (SPI)) bus system is a kind of synchronous serial Peripheral Interface, and micro-control unit (MCU) and various ancillary equipment are communicated with exchange message with serial mode.
The utility model also provides a kind of expansion mobile system of expanding unit as above, and this expansion mobile system also comprises a mobile terminal; This mobile terminal comprises an audio interface and a modem module; This expanding unit is connected with the audio interface of this mobile terminal by this audio interface of this expanding unit;
The audio interface of this mobile terminal is used for this modulated magnetic field signal is sent to this modem module;
This modem module is used for this modulated magnetic field signal is demodulated into this field signal;
This mobile terminal is used for generating directional information according to this field signal;
This mobile terminal also is used for by this modem module, this control signal is modulated to this modulator control signal, and this modulator control signal is sent to this audio interface of this expanding unit by the audio interface of this mobile terminal.
This direction information is the geographical location information that can show on mobile terminal, for example the image of a compass, can obtain needed direction intuitively by this direction information as using the mechanical finger compass.
Preferably, this modem module comprises an audio coder-decoder.
Positive progressive effect of the present utility model is: overcome the low and middle-end mobile phone and can't realize guide function due to having electronic compass not, perhaps can't place the defective of geomagnetic sensor due to Structure Designing Problem, make the low and middle-end mobile phone can not be subjected to being limited in the situation that change structure does not design of mobile terminal structure design to realize the function of compass by this expanding unit, and have the following advantages:
1. the utility model can be extended to the mobile terminal with digital compass function easily with the mobile terminal that does not have digital compass.
2. utilize the existing audio interface of mobile terminal, do not need extra interface equipment.Nearly all mobile terminal can be expanded, and is fit to standardized production in enormous quantities.
3. transducer is placed on outside terminal, and the huge challenge to Terminal Design that can avoid built-in electronic compass functional chip to bring has large face ferrous material as near the mainboard zone.The mobile terminal that also is fit to the digital compass poor-performing is expanded the original digital compass of replacement.
4. other existing external compasses of comparing, the utility model can coordinate the gravity sensor in this expanding unit and mobile terminal by mobile terminal, the angle of pitch and angle of heel to expanding unit are proofreaied and correct, and make the indication of compass not be subjected to the restriction of level.
5. other existing external compasses of comparing, the utility model can coordinate the global positioning system (GPS) in device and mobile terminal by mobile terminal, improves user's location navigation and experiences.
6. also to have a cost low for the utility model, and volume is little, the characteristics of being convenient to carry.
Description of drawings
Fig. 1 is the signal flow graph of the expanding unit of embodiment of the present utility model.
Fig. 2 is the signal flow graph of the expansion mobile system of embodiment of the present utility model.
Embodiment
The below lifts a preferred embodiment, and comes by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
As shown in Figure 1, an expanding unit comprises a transducer 1, an interface control unit 2 and an audio interface 3.This transducer 1 is connected with this interface control unit 2, and this interface control unit 2 is connected with this audio interface 3.
In the present embodiment, this transducer 1 is Magnetic Sensor selectively, and this geomagnetic sensor is connected with this interface control unit 2 by digital interface I2C or SPI.this geomagnetic sensor produces a field signal, and this field signal is sent to this interface control unit 2, this interface control unit 2 comprises a modulation-demodulation circuit, this modulation-demodulation circuit is selected the ASK modulation-demodulation circuit in the present embodiment, this ASK modulation-demodulation circuit has been realized a function served as bridge between this audio interface 3 and this geomagnetic sensor, this geomagnetic sensor produces this field signal and is sent to this ASK modulation-demodulation circuit by I2C or SPI interface, this ASK modulation-demodulation circuit carries out the ASK modulation to this field signal, the mode of ASK modulation is: because this field signal is by I2C or the transmission of SPI digital interface, therefore this field signal is originally as digital signal, digital signal can't be transmitted by audio interface, therefore need first digital signal to be modulated, carrier wave is on-off under the control of communication digital signal 1 or 0, be that 1 state carrier wave is connected at signal, there is this moment carrier wave to occur on transmission channel, be under 0 state at signal, carrier wave is turned off, on transmission channel, carrierfree transmits at this moment.Just can restore 1 and 0 of digital signal according to having or not of carrier wave at mobile terminal so.This shows according to 0 or 1 waveform that decides analog signal in digital signal, be about to digital signal modulated for analog signal, so this field signal is through having become a modulated magnetic field signal after the ASK modulation, this modulated magnetic field signal is a kind of analog signal, it will be appreciated by those skilled in the art that, make this modulated magnetic field signal to send by this audio interface 3, the frequency of this modulated magnetic field signal and bandwidth must meet the requirement of this audio interface 3.
this modulated magnetic field signal is sent to this audio interface 3 by this interface control unit 2, this audio interface 3 is selected 4 segmentation Earphone joints in the present embodiment, this 4 segmentation Earphone joint is a kind of audio frequency of mobile terminal joint very commonly used, this expanding unit is connected with the audio interface 4 of a mobile terminal by this 4 segmentation Earphone joint, the audio interface 4 of this mobile terminal is the 4 segmentation earphone interfaces corresponding with this 4 segmentation Earphone joint, so just as earphone inserts the mobile terminal earphone interface, by this 4 segmentation Earphone joint is inserted this 4 segmentation earphone interface, realize being connected of this expanding unit and this mobile terminal, and by such connected mode, this modulated magnetic field signal can be sent to by this audio interface 3 audio interface 4 of this mobile terminal.
As Fig. 1 and shown in Figure 2, after the audio interface of expanding unit 5 is sent to the audio interface 4 of mobile terminal with this modulated magnetic field signal, the audio interface 4 of this mobile terminal is sent to audio decoder encoder 6 with this modulated magnetic field signal, and this audio decoder encoder 6 is built in this mobile terminal.this audio decoder encoder 6 carries out demodulation with this modulated magnetic field signal, this modulated magnetic field signal that is about to analog signal carries out analog/digital (A/D) conversion, this modulated magnetic field signal is demodulated into this field signal of digital signal, then this field signal is sent to compass applications software 7, this compass applications software 7 is the software of installing in this mobile terminal, this compass applications software 7 generates the directional information of needs according to this field signal, can demonstrate the image of compass at the display interface of mobile terminal, make the user can get information about current directional information by the image of this compass.
as Fig. 1 and shown in Figure 2, this compass applications software 7 can also send one and control signal to this audio coder-decoder 6, this audio coder-decoder 6 is by digital-to-analog (D/A) conversion, this control signal of digital signal is converted to the modulator control signal of analog signal, this modulator control signal is sent to the audio interface 3 of this expanding unit 5 by this audio frequency of mobile terminal interface 4, this audio interface 3 is sent to this ASK modulation-demodulation circuit with this modulator control signal, this ASK modulation-demodulation circuit carries out demodulation with this modulator control signal, the mode of demodulation is opposite with the modulation system of described ASK modulation-demodulation circuit before, through after demodulation, this modulator control signal is demodulated into this control signal of digital signal, and this control signal is sent to this transducer 1 through I2C or SPI interface, this transducer 1 determines whether continuing to produce this field signal according to this control signal, and when this expanding unit is connected with this mobile terminal, this mobile terminal can control signal to this expanding unit by sending this, whether have according to this expanding unit whether respond what judge this mobile terminal access be this expanding unit, after access, this mobile terminal can also be configured or this transducer 1 is carried out initialization by the inner members such as register of this control signal to this transducer 1.
Can find out that in conjunction with Fig. 1 and Fig. 2 this mobile terminal and this expanding unit have formed an expansion mobile system jointly, this expansion mobile system has been realized the Function Extension to the mobile terminal digital compass by the combination of this mobile terminal and this expanding unit.
It will be appreciated by those skilled in the art that, ASK modulation-demodulation circuit described in embodiment is a kind of in the more modulation demodulator circuit, 4 segmentation earphone interfaces are a kind of in the audio interface of multiple standards just also, also having I2C and SPI interface is also the digital interface that is carried by transducer, all only as the use of embodiment, other modulation-demodulation circuit, audio interface and digital interface all can be used.Described interface control unit also is not only modulation-demodulation circuit, also comprises the function that realizes accordingly the sending and receiving signal.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is limited by appended claims.Those skilled in the art can make various changes or modifications to these execution modes under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection range of the present utility model.
Claims (8)
1. expanding unit, this expanding unit is used for a mobile terminal, it is characterized in that, and this expanding unit includes a transducer, an interface control unit and an audio interface; This transducer is connected with this interface control unit, and this interface control unit is connected with this audio interface;
This transducer is used for generating a field signal, and this field signal is sent to this interface control unit;
This interface control unit is used for this field signal is modulated to a modulated magnetic field signal, and this modulated magnetic field signal is sent to this audio interface;
This audio interface is used for this modulated magnetic field signal is sent to the audio interface of this mobile terminal;
This audio interface also is used for a modulator control signal of the audio interface transmission of this mobile terminal is sent to this interface control unit;
This interface control unit also is used for this modulator control signal is demodulated into a control signal, and this control signal is sent to this transducer;
This transducer also is used for generating this field signal or stopping generating this field signal according to this control signal.
2. expanding unit as claimed in claim 1, is characterized in that, this transducer is geomagnetic sensor.
3. expanding unit as claimed in claim 1 or 2, it is characterized in that, the audio interface of this mobile terminal is 4 segmentation earphone interfaces, and this audio interface is the 4 segmentation Earphone joints corresponding with this 4 segmentation earphone interface, and this 4 segmentation earphone interface is connected with this 4 segmentation Earphone joint.
4. expanding unit as claimed in claim 1 or 2, is characterized in that, this interface control unit is modulation-demodulation circuit.
5. expanding unit as claimed in claim 4, is characterized in that, this modulation-demodulation circuit is the ASK modulation-demodulation circuit.
6. expanding unit as claimed in claim 1 or 2, is characterized in that, this transducer is connected with this interface control unit by I2C interface or SPI interface.
7. an expansion mobile system that comprises expanding unit as claimed in claim 1, is characterized in that, this expansion mobile system also comprises a mobile terminal; This mobile terminal comprises an audio interface and a modem module; This expanding unit is connected with the audio interface of this mobile terminal by this audio interface of this expanding unit;
The audio interface of this mobile terminal is used for this modulated magnetic field signal is sent to this modem module;
This modem module is used for this modulated magnetic field signal is demodulated into this field signal;
This mobile terminal is used for generating directional information according to this field signal;
This mobile terminal also is used for by this modem module, this control signal is modulated to this modulator control signal, and this modulator control signal is sent to this audio interface of this expanding unit by the audio interface of this mobile terminal.
8. expansion mobile system as claimed in claim 7, is characterized in that, this modem module comprises an audio coder-decoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220750380 CN203014937U (en) | 2012-12-31 | 2012-12-31 | Extension device and extended mobile system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220750380 CN203014937U (en) | 2012-12-31 | 2012-12-31 | Extension device and extended mobile system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014937U true CN203014937U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220750380 Expired - Fee Related CN203014937U (en) | 2012-12-31 | 2012-12-31 | Extension device and extended mobile system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014937U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112715006A (en) * | 2018-08-30 | 2021-04-27 | 弗劳恩霍夫应用研究促进协会 | Data transmission between a user terminal and another device |
| US11757490B2 (en) | 2018-08-02 | 2023-09-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V | Data transmission from a user terminal to another apparatus |
-
2012
- 2012-12-31 CN CN 201220750380 patent/CN203014937U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11757490B2 (en) | 2018-08-02 | 2023-09-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V | Data transmission from a user terminal to another apparatus |
| CN112715006A (en) * | 2018-08-30 | 2021-04-27 | 弗劳恩霍夫应用研究促进协会 | Data transmission between a user terminal and another device |
| CN112715006B (en) * | 2018-08-30 | 2023-01-03 | 弗劳恩霍夫应用研究促进协会 | Data transmission method, user terminal, system, device and base station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201231 |