CN204948058U - Mobile phone write by hand device - Google Patents
Mobile phone write by hand device Download PDFInfo
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- CN204948058U CN204948058U CN201520704914.6U CN201520704914U CN204948058U CN 204948058 U CN204948058 U CN 204948058U CN 201520704914 U CN201520704914 U CN 201520704914U CN 204948058 U CN204948058 U CN 204948058U
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- wireless transceiver
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Abstract
Utility model discloses a kind of mobile phone write by hand device, and its key is: comprise radio-frequency antenna, radio-frequency (RF) switch, wireless transceiver, USB converter and USB interface; Radio-frequency antenna connects the input of radio-frequency (RF) switch; Second output of radio-frequency (RF) switch connects wireless transceiver radio frequency reception end RX, and the first output of radio-frequency (RF) switch connects wireless transceiver radio-frequency transmissions end TX, and the switch control terminal of radio-frequency (RF) switch connects wireless transceiver input/output terminal; The data input pin of wireless transceiver connects the data output end TXD of USB converter, and the data output end of wireless transceiver connects the data input pin RXD of USB converter; The USB positive signal end of USB converter is connected USB interface respectively with USB negative signal end.Beneficial effect: can realize data acquisition function by being plugged on by the utility model on mobile phone, not needing traditional manual operator, structure is simple, is easy to carry, but also achieves the one-machine-multi-function of mobile phone, more can convenient, fast, acquisition instrument data rapidly.
Description
Technical field
The utility model relates to instrument write by hand device technology, specifically a kind of mobile phone write by hand device.
Background technology
The development of instrument write by hand device technology effectively reduces the workload of people, ensure that the accuracy that instrumented data gathers and improves instrumented data collecting efficiency; Along with intelligentized development, write by hand device technology is also increasingly mature.In order to make write by hand device function more intelligent, existing write by hand device carries wireless communication module, human-computer interaction interface, control module etc.; The perfect write by hand body sum quality that causes of function is increasing, is not easy to staff and carries with, in use bring inconvenience.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of structure simple, portable mobile phone write by hand device, and concrete scheme is as follows:
A kind of mobile phone write by hand device, its key is: comprise radio-frequency antenna, radio-frequency (RF) switch, wireless transceiver, USB converter and USB interface; Described radio-frequency antenna is connected to the input of described radio-frequency (RF) switch; Second output of described radio-frequency (RF) switch is connected to described wireless transceiver radio frequency reception end RX, first output of described radio-frequency (RF) switch is connected to described wireless transceiver radio-frequency transmissions end TX, and the switch control terminal of described radio-frequency (RF) switch is connected to described wireless transceiver input/output terminal; The data input pin of described wireless transceiver is connected to the data output end TXD of described USB converter, and the data output end of described wireless transceiver connects the data input pin RXD of described USB converter; USB positive signal end and the USB negative signal end of described USB converter are connected in described USB interface; Also include stabilized voltage power supply, for described wireless transceiver is powered; Described wireless transceiver is also connected with clock module, and described clock module provides clock signal for described wireless transceiver.
During use, by described USB interface, this mobile phone write by hand device is connected on mobile phone, mobile phone is installed corresponding APP, namely by the utility model, instrumented data is collected in mobile phone, carry out processing or send to host computer to process.
Further, for improving circuit anti-interference ability, ensure that data reliability, first-level filtering wave circuit is also provided with between described radio-frequency antenna and described radio-frequency (RF) switch, this first-level filtering wave circuit comprises electric capacity CC2, electric capacity CM2, electric capacity CM3 and inductance L M3, one end of described electric capacity CC2 is connected to the input of described radio-frequency (RF) switch, and after the other end of described electric capacity CC2 and described inductance L M3 connect, the other end of described inductance L M3 is connected to the output of described radio-frequency antenna; The two ends of described inductance L M3 are respectively through ground connection after described electric capacity CM2 and described electric capacity CM3.
Further, the second output of described radio-frequency (RF) switch connects differential signal receiving terminal RXP and RXN of described wireless transceiver after radio frequency reception filter circuit; First output of described radio-frequency (RF) switch connects the output TX of described wireless transceiver after radio-frequency transmissions filter circuit.
Wherein, described radio frequency reception filter circuit comprises electric capacity CC1, electric capacity CR2, electric capacity CR1 and inductance L R2, inductance L R1; One end of described electric capacity CC1 is connected to the second output of described radio-frequency (RF) switch, the other end of described electric capacity CC1 is connected on the differential signal receiving terminal RXN of described wireless transceiver through electric capacity CR2, and the other end of described electric capacity CC1 is also connected on the differential signal receiving terminal RXP of described wireless transceiver through inductance L R2; Between differential signal receiving terminal RXP and RXN of described wireless transceiver, also cross-over connection has inductance L R1, the differential signal receiving terminal RXP also ground connection after described electric capacity CR1 of described wireless transceiver;
Described radio-frequency transmissions filter circuit comprises electric capacity C0, electric capacity CM1, electric capacity CC3, inductance L 0, inductance L M, inductance L M1, inductance L M2; One end of described inductance L 0 is connected on the output TX of described wireless transceiver, the other end of described inductance L 0 is successively after series capacitance C0, inductance L M1, inductance L M2 and electric capacity CC3, be connected on the first output of described radio-frequency (RF) switch again, common port ground connection after described inductance L M of described electric capacity C0, inductance L M1, common port ground connection after described electric capacity CM1 of described inductance L M1, inductance L M2.
Beneficial effect: realize the transfer of data between instrument and mobile phone by the utility model, and do not need traditional manual operator, structure is simple, is easy to carry, overcomes the inconvenience in conventional manual operator use procedure.But also achieve the one-machine-multi-function of mobile phone, more can convenient, fast, acquisition instrument data rapidly.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is the interconnective circuit diagram of radio-frequency antenna, radio-frequency (RF) switch and wireless transceiver in Fig. 1;
Fig. 3 is the USB converter circuit diagram in Fig. 1;
Fig. 4 is the voltage-stabilized power supply circuit figure in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
A kind of mobile phone write by hand device as depicted in figs. 1 and 2, its key is: comprise radio-frequency antenna 1, radio-frequency (RF) switch 2, wireless transceiver 3, USB converter 4 and USB interface 5; Described radio-frequency antenna 1 is connected to the input of described radio-frequency (RF) switch 2; Second output of described radio-frequency (RF) switch 2 is connected to described wireless transceiver 3 radio frequency reception end RX, first output of described radio-frequency (RF) switch 2 is connected to described wireless transceiver 3 radio-frequency transmissions end TX, and the switch control terminal of described radio-frequency (RF) switch 2 is connected to described wireless transceiver 3 input/output terminal; The data input pin of described wireless transceiver 3 is connected to the data output end TXD of described USB converter 4, and the data output end of described wireless transceiver 3 connects the data input pin RXD of described USB converter 4; The USB positive signal end of described USB converter 4 and USB negative signal end are connected in described USB interface 5; Also include stabilized voltage power supply 6, for described wireless transceiver 3 is powered, the circuit diagram of this stabilized voltage power supply 6 as shown in Figure 4; Described wireless transceiver 3 is also connected with clock module 7, and described clock module 7 provides clock signal for described wireless transceiver 3.
The circuit theory of USB interface 5 described in the utility model as shown in Figure 3, during use, by described USB interface 5, this mobile phone write by hand device is connected on mobile phone, mobile phone is installed corresponding APP, namely by the utility model, instrumented data is collected in mobile phone, carry out processing or send to host computer to process.
For improving circuit anti-interference ability, ensure that data reliability, as can be seen from Figure 2, first-level filtering wave circuit is also provided with between described radio-frequency antenna 1 and described radio-frequency (RF) switch 2, this first-level filtering wave circuit comprises electric capacity CC2, electric capacity CM2, electric capacity CM3 and inductance L M3, one end of described electric capacity CC2 is connected to the input of described radio-frequency (RF) switch 2, and after the other end of described electric capacity CC2 and described inductance L M3 connect, the other end of described inductance L M3 is connected to the output of described radio-frequency antenna 1; The two ends of described inductance L M3 are respectively through ground connection after described electric capacity CM2 and described electric capacity CM3.
Second output of described radio-frequency (RF) switch 2 connects differential signal receiving terminal RXP and RXN of described wireless transceiver 3 after radio frequency reception filter circuit; First output of described radio-frequency (RF) switch 2 connects the output TX of described wireless transceiver 3 after radio-frequency transmissions filter circuit.
Be it can also be seen that by Fig. 2, described radio frequency reception filter circuit comprises electric capacity CC1, electric capacity CR2, electric capacity CR1 and inductance L R2, inductance L R1; One end of described electric capacity CC1 is connected to the second output of described radio-frequency (RF) switch 2, the other end of described electric capacity CC1 is connected on the differential signal receiving terminal RXN of described wireless transceiver 3 through electric capacity CR2, and the other end of described electric capacity CC1 is also connected on the differential signal receiving terminal RXP of described wireless transceiver 3 through inductance L R2; Between differential signal receiving terminal RXP and RXN of described wireless transceiver 3, also cross-over connection has inductance L R1, the differential signal receiving terminal RXP also ground connection after described electric capacity CR1 of described wireless transceiver 3;
Described radio-frequency transmissions filter circuit comprises electric capacity C0, electric capacity CM1, electric capacity CC3, inductance L 0, inductance L M, inductance L M1, inductance L M2; One end of described inductance L 0 is connected on the output TX of described wireless transceiver 3, the other end of described inductance L 0 is successively after series capacitance C0, inductance L M1, inductance L M2 and electric capacity CC3, be connected on the first output of described radio-frequency (RF) switch 2 again, common port ground connection after described inductance L M of described electric capacity C0, inductance L M1, common port ground connection after described electric capacity CM1 of described inductance L M1, inductance L M2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a mobile phone write by hand device, is characterized in that: comprise radio-frequency antenna (1), radio-frequency (RF) switch (2), wireless transceiver (3), USB converter (4) and USB interface (5);
Described radio-frequency antenna (1) is connected to the input of described radio-frequency (RF) switch (2);
Second output of described radio-frequency (RF) switch (2) is connected to described wireless transceiver (3) radio frequency reception end RX, first output of described radio-frequency (RF) switch (2) is connected to described wireless transceiver (3) radio-frequency transmissions end TX, and the switch control terminal of described radio-frequency (RF) switch (2) is connected to described wireless transceiver (3) input/output terminal;
The data input pin of described wireless transceiver (3) is connected to the data output end TXD of described USB converter (4), and the data output end of described wireless transceiver (3) connects the data input pin RXD of described USB converter (4); The USB positive signal end of described USB converter (4) and USB negative signal end are connected in described USB interface (5);
Also including stabilized voltage power supply (6), is described wireless transceiver (3) power supply.
2. mobile phone write by hand device according to claim 1, it is characterized in that: described wireless transceiver (3) is also connected with clock module (7), described clock module (7) provides clock signal for described wireless transceiver (3).
3. mobile phone write by hand device according to claim 1, it is characterized in that: between described radio-frequency antenna (1) and described radio-frequency (RF) switch (2), be also provided with first-level filtering wave circuit, this first-level filtering wave circuit comprises electric capacity CC2, electric capacity CM2, electric capacity CM3 and inductance L M3, one end of described electric capacity CC2 is connected to the input of described radio-frequency (RF) switch (2), after the other end of described electric capacity CC2 and described inductance L M3 connect, the other end of described inductance L M3 is connected to the output of described radio-frequency antenna (1); The two ends of described inductance L M3 are respectively through ground connection after described electric capacity CM2 and described electric capacity CM3.
4. the write by hand device of the mobile phone according to claim 1 or 3, is characterized in that: the second output of described radio-frequency (RF) switch (2) connects differential signal receiving terminal RXP and RXN of described wireless transceiver (3) after radio frequency reception filter circuit; First output of described radio-frequency (RF) switch (2) connects the output TX of described wireless transceiver (3) after radio-frequency transmissions filter circuit.
5. mobile phone write by hand device according to claim 4, is characterized in that:
Described radio frequency reception filter circuit comprises electric capacity CC1, electric capacity CR2, electric capacity CR1 and inductance L R2, inductance L R1; One end of described electric capacity CC1 is connected to the second output of described radio-frequency (RF) switch (2), the other end of described electric capacity CC1 is connected on the differential signal receiving terminal RXN of described wireless transceiver (3) through electric capacity CR2, and the other end of described electric capacity CC1 is also connected on the differential signal receiving terminal RXP of described wireless transceiver (3) through inductance L R2; Between differential signal receiving terminal RXP and RXN of described wireless transceiver (3), also cross-over connection has inductance L R1, the differential signal receiving terminal RXP also ground connection after described electric capacity CR1 of described wireless transceiver (3);
Described radio-frequency transmissions filter circuit comprises electric capacity C0, electric capacity CM1, electric capacity CC3, inductance L 0, inductance L M, inductance L M1, inductance L M2; One end of described inductance L 0 is connected on the output TX of described wireless transceiver (3), the other end of described inductance L 0 is successively after series capacitance C0, inductance L M1, inductance L M2 and electric capacity CC3, be connected on the first output of described radio-frequency (RF) switch (2) again, common port ground connection after described inductance L M of described electric capacity C0, inductance L M1, common port ground connection after described electric capacity CM1 of described inductance L M1, inductance L M2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704914.6U CN204948058U (en) | 2015-09-11 | 2015-09-11 | Mobile phone write by hand device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704914.6U CN204948058U (en) | 2015-09-11 | 2015-09-11 | Mobile phone write by hand device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204948058U true CN204948058U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520704914.6U Active CN204948058U (en) | 2015-09-11 | 2015-09-11 | Mobile phone write by hand device |
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| CN (1) | CN204948058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007090A (en) * | 2015-07-10 | 2015-10-28 | 成都弘毅天承科技有限公司 | Parallel port 315M and 433M receiving-transmitting module for smart home |
-
2015
- 2015-09-11 CN CN201520704914.6U patent/CN204948058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007090A (en) * | 2015-07-10 | 2015-10-28 | 成都弘毅天承科技有限公司 | Parallel port 315M and 433M receiving-transmitting module for smart home |
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