CN212302468U - Serial communication interface equipment based on android system - Google Patents
Serial communication interface equipment based on android system Download PDFInfo
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- CN212302468U CN212302468U CN202021213302.4U CN202021213302U CN212302468U CN 212302468 U CN212302468 U CN 212302468U CN 202021213302 U CN202021213302 U CN 202021213302U CN 212302468 U CN212302468 U CN 212302468U
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Abstract
The utility model discloses a serial communication interface equipment based on Android system, to current serial communication equipment under the unsuitable condition of wireless communication, can't realize that Android system platform carries out the isolation of data and encrypts the problem of communication with computer equipment, first equipment link through adopting FTDIchipFET 232 circuit, the UART serial interface that links to each other and acquire computer equipment with computer equipment, adopt the second equipment link of FTDIchipFET 312D circuit, link to each other and acquire the UART serial interface of Android equipment through Android open access self-driven with Android equipment, adopt data communication circuit to connect first equipment link and second equipment link, make the serial interface of first equipment link through FTDIpFET 312D circuit, activate Android open access self-driven, serial data communication is realized.
Description
Technical Field
The utility model belongs to the technical field of serial communication, especially, relate to a serial communication interface equipment based on tall and erect system of ann.
Background
With the rapid development of mobile internet application, an Android system platform is generally adopted in the industry of mobile data acquisition terminals, APP application acquires application data in modes of an Android system platform, such as WIFI, 4G, bluetooth and a USB port, and the main communication means is a wireless communication mode and a USB port wired communication mode.
The wireless communication transmission environment is an open space, radio waves are complex, the data transmission process is easily interfered and intercepted, the potential safety risk of the confidential data transmission process is caused, and meanwhile, the wireless communication AP and the terminal equipment are required to support.
The USB port wired communication transmission is embodied as a USB storage device mode in an Android system platform for data transmission, data are stored in an internal SD or external SD open space of the Android system, potential risks of security data storage are caused, and meanwhile, APP application is required to secondarily acquire and process SD stored data.
The requirements on data transmission management and control of some confidential organizations are extremely high, no wireless communication network exists in office confidential environment areas under normal conditions, and the port of a computer USB device is limited, shielded or isolated through a security management and control system, so that the Android system platform cannot acquire necessary data required by APP application through the existing data transmission mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a serial communication interface equipment based on Android system can realize that Android system platform and computer equipment carry out serial data's isolation encryption communication function under the unsuitable condition of wireless communication.
In order to solve the above problem, the technical scheme of the utility model is that:
an android-based serial communication interface device, comprising: the device comprises a first device connecting end, a second device connecting end and a data communication circuit;
the first equipment connecting end adopts an FTDIchipFT232 circuit, is connected with computer equipment and acquires a UART serial interface of the computer equipment;
the second device connecting end adopts an FTDIChipFT312D circuit, is connected with the android device and obtains a UART serial interface of the android device through android OpenAccess self-drive;
the data communication circuit is connected with the first equipment connecting end and the second equipment connecting end, the second equipment connecting end enables a UART serial interface of the first equipment connecting end through an FTDIchipFT312D circuit, and the android OpenAccess self-driving is activated to realize serial data communication.
According to an embodiment of the present invention, the data communication circuit includes an electrical isolation circuit and a two-channel digital communication circuit;
the electrical isolation circuit adopts a DC-DC power supply module to carry out voltage stabilization isolation on input voltage and output voltage;
the dual-channel digital communication circuit adopts an ADUM3201ARZ chip to isolate a data receiving channel and a data sending channel, thereby enhancing the reliability of serial communication.
According to an embodiment of the present invention, the electrical isolation circuit adopts a B0503 chip circuit, the input voltage of the electrical isolation circuit is +5V, and the output voltage is + 3.3V;
and the voltage input end and the voltage output end of the electrical isolation circuit are respectively connected to the corresponding power supply pins of the ADUM3201ARZ chip to provide power supply for the ADUM3201ARZ chip.
According to the utility model relates to an embodiment, serial communication interface equipment based on tall and erect system of ann still includes data encryption module, data encryption module locates data transmission passageway front end treats that the sending data encrypts, guarantees the data transmission security.
According to the utility model discloses an embodiment, serial communication interface device based on tall and erect system of ann still includes sandbox safe storage module, sandbox safe storage module locates data receiving channel rear end decrypts and saves the data of receipt, guarantees the data storage security.
According to an embodiment of the present invention, the serial communication interface device based on the android system further includes a connection indicator light and a data communication indicator light;
the connection indicator lamp is arranged in the FTDIchipFT232 circuit and/or the FTDIchipFT312D circuit and is used for indicating the connection state of the first equipment connection end and/or the second equipment connection end;
the data communication indicator lamp is arranged in the data communication circuit and used for indicating the serial data communication state.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
1) the utility model provides a serial communication interface equipment based on Android system, to current serial communication equipment under the unsuitable condition of wireless communication, can't realize that Android system platform carries out the isolation encryption communication's of serial data problem with computer equipment, first equipment link through adopting FTDIchipFET 232 circuit, the UART serial interface that links to each other and obtain computer equipment with computer equipment, the second equipment link that adopts FTDIchipFET 312D circuit, link to each other and acquire the UART serial interface of Android equipment through Android open access self-driven with Android equipment, adopt data communication circuit to connect first equipment link and second equipment link, the serial interface that makes UART first equipment link through FTDIchipFET 312D circuit, activate Android open access self-driven, realize serial data communication.
2) The utility model provides a serial communication interface equipment based on tall and erect system of ann adopts DC-DC power module, carries out the steady voltage to power input, output and keeps apart to make the steady voltage output, and provide sustainable short-circuit protection.
3) The utility model provides a serial communication interface equipment based on tall and erect system of ann, through ADUM3201ARZ digital signal input/output buffer circuit, adopt the binary channels digit to keep apart the communication, the ESD (prevent static) reliability of reinforcing equipment.
Drawings
Fig. 1 is an appearance schematic diagram of a serial communication interface device based on an android system in an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal structure of a serial communication interface device based on an android system in an embodiment of the present invention;
fig. 3 is an electrical isolation circuit diagram of the serial communication interface device based on the android system in an embodiment of the present invention;
fig. 4 is a data communication circuit diagram of the serial communication interface device based on the android system in an embodiment of the present invention;
fig. 5 is a diagram of an FTDIchipFT232 circuit of an android-based serial communications interface device according to an embodiment of the present invention;
fig. 6 is a circuit diagram of FTDIchipFT312D of serial communication interface device based on android system in an embodiment of the present invention.
Description of reference numerals:
1: a first device connection end; 2: a second device connection end; 3: a data communication circuit; 4: connecting an indicator light; 5: data communication pilot lamp.
Detailed Description
The following describes the serial communication interface device based on the android system in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Please refer to fig. 1 and fig. 2, the present invention provides a serial communication interface device based on android system, which includes: first equipment link 1, second equipment link 2, data communication circuit 3, connection pilot lamp 4 and data communication pilot lamp 5.
The first device connecting end 1 is connected with the computer device by adopting an FTDIchipFT232 circuit and acquires a UART serial interface of the computer device;
the second device connecting end 2 is connected with the android device by adopting an FTDIchipFT312D circuit and obtains a UART serial interface of the android device through android Opcessory self-driving;
the data communication circuit 3 is connected with the first equipment connecting end 1 and the second equipment connecting end 2, the second equipment connecting end 2 enables a UART serial interface of the first equipment connecting end 1 through an FTDIchipFT312D circuit, and activates android OpenAccess self-driving to acquire serial data streams and realize serial data communication;
connect pilot lamp 4 has two, locates respectively in FTDIchipFT232 circuit and FTDIchipFT312D circuit for indicate the connected state of first equipment link 1 and second equipment link 2.
As shown in fig. 1, in order to distinguish the two connection indicator lamps 4, the connection indicator lamp 4 on the left in fig. 1 is named a first connection indicator lamp, and the connection indicator lamp 4 on the right in fig. 1 is named a second connection indicator lamp. The first connection indicating lamp is used for indicating whether the first equipment connection end 1 is communicated with the computer equipment, if so, the lamp is on, and if not, the lamp is off. In practical application, the first device connection end 1 is connected with a USB port of a computer device by using a USB male connector.
This second connection pilot lamp is used for instructing second equipment link 2 whether with tall and erect equipment intercommunication of ann, if, then the lamp is bright, if not, then the lamp goes out. In practical application, the second equipment connecting end 2 adopts the USB female head to conveniently expand and connect the USB interfaces of different android devices, such as type-c and micro USB.
The data communication indicator lamp 5 is provided in the data communication circuit for indicating the serial data communication state. When the data communication indicator lamp 5 is turned on, it indicates that the apparatus is performing data communication.
Specifically, the data communication circuit 3 includes an electrical isolation circuit and a dual channel digital communication circuit. The electric isolation circuit adopts a DC-DC power supply module to carry out voltage stabilization isolation on input voltage and output voltage. Referring to fig. 3, the electrical isolation circuit adopts a B0503 chip circuit, the input voltage of the electrical isolation circuit is +5V, the output voltage is +3.3V, and the dc voltage conversion from +5V to +3.3V is realized. In addition, two pairs of pins of + Vin, -Vin, + Vout and-Vout are arranged in the B0503 chip, so that the input voltage is isolated from the output voltage, and the short-circuit protection effect can be realized.
Referring to fig. 4, the dual-channel digital communication circuit adopts an ADUM3201ARZ chip to isolate a data receiving channel from a data transmitting channel, thereby enhancing the reliability of serial communication. The VDD1 pin in the ADUM3201ARZ chip is connected with the +5V voltage pin of the B0503 chip, the VDD2 pin is connected with the +3.3V voltage pin of the B0503 chip, and the electric quantity is obtained from the B0503 chip for the self operation. The ADUM3201ARZ chip adopts two-channel digital isolation communication to isolate a data receiving channel and a data sending channel. Specifically, as shown in fig. 4, the VIA-VOA channel may be used as a digital signal input channel (i.e., a data receiving channel), and the VIB-VOB channel may be used as a digital signal output channel (i.e., a data transmitting channel).
First equipment link 1 adopts FTDIchipFT232 circuit, realizes that the USB changes UART function, please refer to FIG. 5. In the figure, the RXD pin in the chip FT232RL is connected to the VOA pin in the ADUM3201ARZ chip, and the TXD pin in the chip FT232RL is connected to the VIB pin in the ADUM3201ARZ chip, so as to connect to the data communication circuit 3. Two pins of USBDM and USBDP in the chip FT232RL are connected with the USB port of computer equipment, acquire UART hardware serial interface, and when second equipment connecting end 2 and the android device communicate, serial data communication between the android device and the computer is ensured.
The second device connection 2 uses FTDIchipFT312D circuit to implement UART-to-USB functionality, please refer to fig. 6. In the figure, the RXD pin in the chip FT312D is connected to the VOB pin in the ADUM3201ARZ chip, and the TXD pin in the chip FT312D is connected to the VIA pin in the ADUM3201ARZ chip, thereby realizing the connection with the data communication circuit 3. Two pins of the USBDM and the USBDP in the chip FT312D are connected with a serial communication port of the android device, so that a UART chip in the android device can be enabled, and android OpenAccess drive is activated in a bridging mode, and serial data streams are acquired.
Above-mentioned serial communication interface device based on tall and erect system of ann has realized better electric isolation and digital signal isolation, and in order to improve serial ports data communication's security, this embodiment still provides data encryption, decryption module and sandbox safety storage module.
The data encryption module is arranged at the front end of the data sending channel and used for encrypting data to be sent so as to ensure the data transmission safety. The sandbox safe storage module is arranged at the rear end of the data receiving channel, and is used for decrypting and storing received data to ensure the safety of data storage. Certainly, to realize the encrypted transmission of data, a matched encryption and decryption secure storage sandbox system module needs to be installed in the computer device and the android device, so that the information security in the data transmission and storage process is ensured.
The utility model adopts the FTDIchipFET 312D circuit, and provides a UART hardware interface for peripheral equipment integration through android OpenAccess self-driving; adopt FTDIchipFT232 circuit, acquire UART hardware serial interface through computer equipment USB port to this serial data communication between assurance android device and the computer. Data are sent after being encrypted, data transmission safety is guaranteed, data are received and directly decrypted and stored in a sandbox isolation safety storage area, and data storage safety is guaranteed. The hardware isolation circuit is electrically used for protecting each terminal device and shielding information interference or pulse. The utility model has the advantages of simple to use, suitability are strong, with low costs, equipment electrical isolation, encryption transmission, plug-and-play.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (7)
1. A serial communication interface device based on an android system, comprising: the device comprises a first device connecting end, a second device connecting end and a data communication circuit;
the first equipment connecting end adopts an FTDIchipFT232 circuit, is connected with computer equipment and acquires a UART serial interface of the computer equipment;
the second device connecting end adopts an FTDIChipFT312D circuit, is connected with the android device and obtains a UART serial interface of the android device through android OpenAccess self-drive;
the data communication circuit is connected with the first equipment connecting end and the second equipment connecting end, the second equipment connecting end enables a UART serial interface of the first equipment connecting end through an FTDIchipFT312D circuit, and the android OpenAccess self-driving is activated to realize serial data communication.
2. The android-based serial communication interface device of claim 1, in which the data communication circuit comprises an electrical isolation circuit and a dual-channel digital communication circuit;
the electrical isolation circuit adopts a DC-DC power supply module to carry out voltage stabilization isolation on input voltage and output voltage;
the dual-channel digital communication circuit adopts an ADUM3201ARZ chip to isolate a data receiving channel and a data sending channel, thereby enhancing the reliability of serial communication.
3. The android-system-based serial communication interface device of claim 2, wherein the electrical isolation circuit is a B0503 chip circuit, an input voltage of the electrical isolation circuit is +5V, and an output voltage of the electrical isolation circuit is + 3.3V;
and the voltage input end and the voltage output end of the electrical isolation circuit are respectively connected to the corresponding power supply pins of the ADUM3201ARZ chip to provide power supply for the ADUM3201ARZ chip.
4. The android-system-based serial communication interface device of claim 2, further comprising a data encryption module, where the data encryption module is disposed at the front end of the data transmission channel, and encrypts data to be transmitted to ensure data transmission security.
5. The android-system-based serial communication interface device of claim 4, further comprising a sandbox secure storage module, wherein the sandbox secure storage module is disposed at a rear end of the data receiving channel, and is configured to decrypt and store the received data, so as to ensure data storage security.
6. The android-based serial communications interface device of any of claims 1-5, further comprising a connection indicator light;
the connection indicator lamp is provided in the FTDIchipFT232 circuit and/or the FTDIchipFT312D circuit for indicating a connection state of the first device connection terminal and/or the second device connection terminal.
7. The android-based serial communications interface device of claim 6, further comprising a data communication indicator light;
the data communication indicator lamp is arranged in the data communication circuit and used for indicating the serial data communication state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213302.4U CN212302468U (en) | 2020-06-28 | 2020-06-28 | Serial communication interface equipment based on android system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213302.4U CN212302468U (en) | 2020-06-28 | 2020-06-28 | Serial communication interface equipment based on android system |
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| Publication Number | Publication Date |
|---|---|
| CN212302468U true CN212302468U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021213302.4U Active CN212302468U (en) | 2020-06-28 | 2020-06-28 | Serial communication interface equipment based on android system |
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| CN (1) | CN212302468U (en) |
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- 2020-06-28 CN CN202021213302.4U patent/CN212302468U/en active Active
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