Intelligent Bluetooth USB flash disk

Abstract

The utility model belongs to the technical field of Bluetooth, and relates to an intelligent Bluetooth U disk which comprises a Bluetooth control circuit, a USB HUB circuit, a card reader control circuit, a 5V power supply circuit, a low-dropout linear voltage stabilizing circuit, an antenna and a FLASH, the Bluetooth control circuit is respectively connected with the USB HUB circuit, the antenna and the low-dropout linear voltage stabilizing circuit, and the card reader control circuit is connected with the FLASH. The USB HUB circuit is also connected with the 5V power supply circuit and the card reader control circuit, and the card reader control circuit is also connected with the FLASH. The Bluetooth control circuit is used as a core and is responsible for realizing stable communication with various Bluetooth devices, so that high efficiency and reliability of data transmission are ensured; the system has efficient, stable and safe data transmission and storage functions, brings more convenient and efficient use experience to users, and can meet diversified requirements of the users in business office or personal entertainment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bluetooth technology more specifically, relate to a kind of intelligent bluetooth U disk. BACKGROUND

[0002] U disk, full name is USB flash disk, it is a kind of portable storage equipment based on flash memory technology, is connected with computer and other equipment through USB interface, realizes the fast transmission and storage of data.Its working principle is to use flash memory chip to remember information, and this nonvolatile storage technology ensures that data can be safely saved in the case of power failure.

[0003] However, although U disk has many advantages, such as small and light, large capacity, easy to use, etc., in the prior art, its intelligent degree still has deficiencies. INVENTION CONTENTS

[0004] In view of the above defects of the prior art, the utility model provides an intelligent bluetooth U disk, comprising:

[0005] Bluetooth control circuit, USB HUB circuit, card reader control circuit, 5V power supply circuit, low-dropout linear regulator circuit, antenna and FLASH, the Bluetooth control circuit is connected with the USB HUB circuit, the antenna and the low-dropout linear regulator circuit respectively, the USB HUB circuit is also connected with the 5V power supply circuit and the card reader control circuit, and the card reader control circuit is also connected with the FLASH.

[0006] Preferably, the Bluetooth control circuit comprises: the pin 1 of Bluetooth chip is connected with one end of capacitor C5, the pin 2 of Bluetooth chip is connected with one end of capacitor C8 and one end of crystal oscillator X1 respectively, the pin 3 of Bluetooth chip is connected with the other end of crystal oscillator X1 and one end of capacitor C9 respectively, the pin 10 of Bluetooth chip is connected with one end of resistor R1, the pin 13 of Bluetooth chip is connected with one end of capacitor C11 and one end of capacitor C12 respectively, the pin 16 of Bluetooth chip is connected with one end of capacitor C13, the pin 17 of Bluetooth chip is connected with one end of capacitor C10, the pin 18 of Bluetooth chip is connected with the other end of capacitor C10, the pin 19 of Bluetooth chip is connected with one end of capacitor C7, the pin 22 of Bluetooth chip is connected with one end of capacitor C6, the pin 31 of Bluetooth chip is connected with one end of capacitor C2, the pin 32 of Bluetooth chip is connected with one end of inductor L2, the other end of inductor L2 is connected with one end of capacitor C1, one end of capacitor C4 and one end of inductor L1 respectively, and the other end of inductor L1 is connected with one end of capacitor C3.

[0007] Preferably, the USB HUB circuit comprises: one end of the capacitor C22 and one end of the crystal oscillator X2 are connected to pin 1 of the USB HUB chip, one end of the capacitor C23 and the other end of the crystal oscillator X2 are connected to pin 2 of the USB HUB chip, the other end of the capacitor C22 and the other end of the capacitor C23 are connected, one end of the resistor R6 is connected to pin 9 of the USB HUB chip, one end of the resistor R4 is connected to pin 10 of the USB HUB chip, one end of the resistor R2, one end of the capacitor C14 and one end of the capacitor C15 are connected to pin 15 of the USB HUB chip, one end of the capacitor C18 and one end of the capacitor C21 are connected to pin 16 of the USB HUB chip, the other end of the capacitor C14, the other end of the capacitor C15, the other end of the capacitor C18, the other end of the capacitor C21 and pin 17 of the USB HUB chip are connected and grounded.

[0008] Preferably, the card reader control circuit comprises: one end of the capacitor C25 and one end of the crystal oscillator X3 are connected to pin 1 of the card reader chip U4, one end of the capacitor C24 and the other end of the crystal oscillator X3 are connected to pin 2 of the card reader chip U4, the other end of the capacitor C24 and the other end of the capacitor C25 are connected, one end of the capacitor C28 is connected to pin 6 of the card reader chip U4, the negative electrode of the diode D1 is connected to pin 14 of the card reader chip U4, one end of the resistor R12 is connected to the positive electrode of the diode D1, one end of the capacitor C26 is connected to pin 21 of the card reader chip U4.

[0009] Preferably, the 5V power supply circuit comprises: one end of the capacitor C16, one end of the capacitor C17 and one end of the resistor R3 are connected to pin 1 of the USB terminal and input VDD5V.

[0010] Preferably, the low-dropout linear voltage stabilizing circuit comprises: one end of the capacitor C19 and one end of the capacitor C20 are connected to pin 5 of the low-dropout linear voltage stabilizing chip U2, the other end of the capacitor C19 and the other end of the capacitor C20 are both grounded.

[0011] Preferably, the Bluetooth chip comprises: BK3633.

[0012] Preferably, the USB HUB chip comprises: CH334P.

[0013] Preferably, the card reader chip U4 comprises: CH377.

[0014] Preferably, the low-dropout linear voltage stabilizing chip U2 comprises: AF6212.

[0015] The intelligent Bluetooth U disk has the following beneficial effects: the Bluetooth control circuit is used as a core, is responsible for realizing stable communication with various Bluetooth devices, and ensures the efficiency and reliability of data transmission; the circuit is closely connected with a USB HUB circuit, an antenna and a low-dropout linear voltage stabilizing circuit, and forms a stable information transmission and power management system; the USB HUB circuit not only expands the connection capacity of the device, but also improves the speed and quality of data transmission through efficient signal distribution; meanwhile, it is seamlessly connected with a 5V power supply circuit and a card reader control circuit, ensures the stable operation of the device in a complex environment, and the 5V power supply circuit provides stable voltage output and provides solid energy guarantee for the whole system; the combination of the card reader control circuit and the FLASH memory further improves the data storage and reading capacity, and this design not only improves the data reading and writing speed, but also greatly enhances the data security and stability; the intelligent Bluetooth U disk has efficient, stable and safe data transmission and storage functions, and brings more convenient and efficient use experience to users, and can meet the diversified needs of users in business office or personal entertainment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art. The present application will be further described in combination with the drawings and embodiments. In the drawings:

[0017] Figure 1 is a preferred embodiment module structure schematic view of the intelligent Bluetooth U disk of the present application;

[0018] Figure 2 is a Bluetooth control circuit circuit diagram in the intelligent Bluetooth U disk of the present application;

[0019] Figure 3 is a USB HUB circuit circuit diagram in the intelligent Bluetooth U disk of the present application;

[0020] Figure 4 is a card reader control circuit circuit diagram in the intelligent Bluetooth U disk of the present application;

[0021] Figure 5 is a 5V power supply circuit and low-dropout linear voltage stabilizing circuit circuit diagram in the intelligent Bluetooth U disk of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0023] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0024] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0025] Please refer to Figure 1 , which is a schematic diagram of a preferred embodiment module of the intelligent Bluetooth U disk of the present application. As shown in Figure 1 , in the intelligent Bluetooth U disk provided by the first embodiment of the present application, at least includes a Bluetooth control circuit, a USB HUB circuit, a card reader control circuit, a 5V power supply circuit, a low-dropout linear regulator circuit, an antenna and a FLASH, the Bluetooth control circuit is connected with the USB HUB circuit, the antenna and the low-dropout linear regulator circuit respectively, the USB HUB circuit is further connected with the 5V power supply circuit and the card reader control circuit, and the card reader control circuit is further connected with the FLASH.

[0026] As the core, the Bluetooth control circuit is responsible for realizing the wireless communication between the U disk and the Bluetooth device, supporting the wireless transmission and reception of data, greatly widening the use scene and flexibility of the U disk.

[0027] Figure 2 is a Bluetooth control circuit circuit diagram in the intelligent Bluetooth U disk of the present application. As shown in Figure 2As shown, the Bluetooth control circuit comprises: one end of a pin 1 of a Bluetooth chip is connected with one end of a capacitor C5, one end of a pin 2 of the Bluetooth chip is connected with one end of a capacitor C8 and one end of a crystal oscillator X1 respectively, the other end of the pin 2 of the Bluetooth chip is connected with one end of a capacitor C9, one end of a pin 10 of the Bluetooth chip is connected with one end of a resistor R1, one end of a pin 13 of the Bluetooth chip is connected with one end of a capacitor C11 and one end of a capacitor C12 respectively, one end of a pin 16 of the Bluetooth chip is connected with one end of a capacitor C13, one end of a pin 17 of the Bluetooth chip is connected with one end of a capacitor C10, the other end of the pin 17 of the Bluetooth chip is connected with the other end of the capacitor C10, one end of a pin 19 of the Bluetooth chip is connected with one end of a capacitor C7, one end of a pin 22 of the Bluetooth chip is connected with one end of a capacitor C6, one end of a pin 31 of the Bluetooth chip is connected with one end of a capacitor C2, one end of a pin 32 of the Bluetooth chip is connected with one end of an inductor L2, the other end of the inductor L2 is connected with one end of a capacitor C1, one end of a capacitor C4 and one end of an inductor L1 respectively, and one end of a capacitor C3 is connected with the other end of the inductor L1.

[0028] In specific implementation, the Bluetooth chip includes but is not limited to BK3633 and the like. The BK3633 chip is a high-performance and high-integration Bluetooth BLE5.2+2.4GHz dual-mode SC low-power chip. The BK3633 chip has high integration, and integrates a switching DCDC voltage regulator, an embedded high-order interference suppression filter and a fast automatic gain control logic, so that the chip is more stable during operation, and power consumption can be effectively reduced. The BK3633 chip supports Bluetooth master-slave mode, can flexibly adapt to different application requirements, and can provide stable and reliable communication performance whether as a master device or a slave device, greatly improving the connection efficiency of the device. The maximum output power of the BK3633 chip can reach 10dBm, and has very strong communication capability, and can realize long-distance Bluetooth connection. Meanwhile, the BK3633 chip has various peripheral interfaces such as UART, I 2S and USB, which greatly facilitates communication with external devices. The working current of the BK3633 chip is very low, about 5mA in full-speed operation, and as low as 1uA in deep sleep, which makes it show very high energy efficiency in application.

[0029] The USB HUB circuit acts as a bridge for data exchange, which not only supports traditional USB interface device connection, but also can increase the number of connections through the expansion port, meeting the needs of multiple devices connecting and data transmission at the same time.

[0030] Figure 3 is a USB HUB circuit circuit diagram in the intelligent Bluetooth U disk of the utility model. Figure 3As shown in the figure, the USB HUB circuit comprises: one end of the capacitor C22 and one end of the crystal oscillator X2 are connected with pin 1 of the USB HUB chip respectively, the other end of the capacitor C22 and one end of the capacitor C23 are connected with pin 2 of the USB HUB chip respectively, the other end of the capacitor C23 is connected with the ground, one end of the resistor R6 is connected with pin 9 of the USB HUB chip, one end of the resistor R4 is connected with pin 10 of the USB HUB chip, one end of the capacitor C14, one end of the capacitor C15 and one end of the resistor R2 are connected with pin 15 of the USB HUB chip respectively, one end of the capacitor C18 and one end of the capacitor C21 are connected with pin 16 of the USB HUB chip respectively, the other end of the capacitor C14, the other end of the capacitor C15, the other end of the capacitor C18, the other end of the capacitor C21 and pin 17 of the USB HUB chip are connected with the ground.

[0031] In specific implementation, the USB HUB chip includes but is not limited to CH334P and the like. CH334P is a USB2.0 high-speed file management control chip, and the core function is to bridge single-chip microcomputer systems, SD cards and other storage devices to realize efficient reading and writing of data. It integrates USB communication, SD card interface and FAT file system management and other multiple firmware, which significantly simplifies the operation complexity of single-chip microcomputers on storage devices. In addition, CH334P also supports MTT mode, which will not slow down when multiple devices are connected at the same time, ensuring the stability and efficiency of data transmission. CH334P chip has high-speed USB communication capability, multi-storage medium support, flexible MCU interface and long file name, multi-level directory management function.

[0032] The card reader control circuit focuses on reading data in various types of storage cards and quickly transmitting them to the internal or external devices of the U disk, thereby improving the efficiency and compatibility of data exchange.

[0033] Figure 4 It is a card reader control circuit circuit diagram in the intelligent Bluetooth U disk of the utility model. As shown in the figure, Figure 4 The card reader control circuit comprises: one end of the capacitor C25 and one end of the crystal oscillator X3 are connected with pin 1 of the card reader chip U4 respectively, one end of the capacitor C24 and the other end of the crystal oscillator X3 are connected with pin 2 of the card reader chip U4 respectively, the other end of the capacitor C24 and the other end of the capacitor C25 are connected, one end of the capacitor C28 is connected with pin 6 of the card reader chip U4, the negative electrode of the diode D1 is connected with pin 14 of the card reader chip U4, one end of the resistor R12 is connected with the positive electrode of the diode D1, one end of the capacitor C26 is connected with pin 21 of the card reader chip U4.

[0034] In specific implementation, the card reader chip U4 includes but is not limited to CH377, etc. CH377 is built-in with various firmware, including USB communication protocol, mass storage device communication protocol, SD card communication interface firmware and FAT file system management firmware, and can quickly read and write files in the SD card, etc. through simple commands. CH377 also supports high-speed USB communication, and the data transmission rate can reach 480Mbps, meeting the demand of high-speed data transmission. Meanwhile, it also supports various storage media, including USB hard disk, SD card, MMC card, etc., greatly enhancing the compatibility and flexibility of the system. CH377 also provides various MCU interfaces, such as 8-bit passive parallel interface, asynchronous serial port and SPI interface, etc., facilitating connection and communication with different types of single-chip microcomputer systems. It also supports long file name and multi-level directory operation, making file management more flexible and convenient.

[0035] The 5V power supply circuit provides stable and reliable power support for the entire system, ensuring that each component operates stably under the rated voltage, avoiding performance degradation or failure caused by voltage fluctuations. The low-dropout linear regulator further optimizes power management, prolonging the working time of the U disk and the battery life by reducing voltage loss and improving power efficiency.

[0036] Figure 5 is the 5V power supply circuit and low-dropout linear regulator circuit diagram in the intelligent Bluetooth U disk of the utility model. As shown in Figure 5 , the 5V power supply circuit includes: the pin 1 of the USB terminal is connected with one end of the capacitor C16, one end of the capacitor C17 and one end of the resistor R3, and is connected to VDD5V.

[0037] As shown in Figure 5 , the low-dropout linear regulator circuit includes: the pin 5 of the low-dropout linear regulator chip U2 is connected with one end of the capacitor C19 and one end of the capacitor C20, and the other end of the capacitor C19 and the other end of the capacitor C20 are grounded.

[0038] In specific implementation, the low-dropout linear regulator chip U2 includes but is not limited to AF6212, etc. AF6212 has the characteristics of low output noise (50uVrms in the range of 10Hz to 100kHz), low voltage difference (150mV@IOUT=150mA), low static current (50uA, typical value) and high ripple rejection ratio (75dB@1KHz). In addition, AF6212 also provides ultra-fast transient response linearity and load adjustment performance, as well as input voltage range (2.0V-6.0V) and output voltage range (1.0V-5.0V).

[0039] AF6212 also has current limiting protection and short circuit protection functions, improving the stability and reliability of the system.

[0040] As the key component of Bluetooth communication, the antenna is responsible for the transmission and reception of wireless signals, and its design directly affects the stability and transmission speed of Bluetooth connection.

[0041] The FLASH memory is used for storing data, and its high-speed reading and writing ability and long-term storage characteristics ensure the safe storage and fast access of data.

[0042] The working principle of the utility model is: the BK3633 Bluetooth chip controls the CH377 card reader chip enable and controls whether the card reader is opened, the user can control whether the USB can be opened through the APP, the USB HUB chip CH334P converts one USB interface into two USB interfaces, one of which is connected with the BK3633 Bluetooth chip, and the other is connected with the CH334P card reader chip. The overall system is powered by a USB male head, and the LDO converts 5V to 3.3V to power the Bluetooth chip. The card reader chip CH377 reads / writes SD Flash data through the SDIO interface. The BK3633 communicates with the mobile phone APP in a wireless manner.

[0043] The utility model has the advantages that:

[0044] The Bluetooth control circuit is the core, responsible for stable communication with various Bluetooth devices, ensuring efficient and reliable data transmission.

[0045] The USB HUB circuit not only expands the connection capability of the device, but also improves the speed and quality of data transmission through efficient signal distribution.

[0046] The combination of the card reader control circuit and the FLASH memory further improves data storage and reading capabilities.

[0047] The design not only improves data reading and writing speed, but also greatly enhances data security and stability.

[0048] The utility model is described according to specific embodiments, but those skilled in the art should understand that various changes and equivalent replacements can be carried out without departing from the scope of the utility model. In addition, in order to adapt to specific occasions of the utility model technology, the utility model can be modified in many ways without departing from the protection scope. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all embodiments falling into the protection scope of claims.

Claims

1. A smart Bluetooth USB flash drive, characterized in that, include: The system includes a Bluetooth control circuit, a USB hub circuit, a card reader control circuit, a 5V power supply circuit, a low-dropout linear regulator circuit, an antenna, and a FLASH memory. The Bluetooth control circuit is connected to the USB hub circuit, the antenna, and the low-dropout linear regulator circuit. The USB hub circuit is also connected to the 5V power supply circuit and the card reader control circuit. The card reader control circuit is also connected to the FLASH memory.

2. The smart Bluetooth USB flash drive according to claim 1, characterized in that, The Bluetooth control circuit includes: pin 1 of the Bluetooth chip is connected to one end of capacitor C5; pin 2 of the Bluetooth chip is connected to one end of capacitor C8 and one end of crystal oscillator X1; pin 3 of the Bluetooth chip is connected to the other end of crystal oscillator X1 and one end of capacitor C9; pin 10 of the Bluetooth chip is connected to one end of resistor R1; pin 13 of the Bluetooth chip is connected to one end of capacitor C11 and one end of capacitor C12; pin 16 of the Bluetooth chip is connected to one end of capacitor C13; pin 17 of the Bluetooth chip is connected to one end of capacitor C10; pin 18 of the Bluetooth chip is connected to the other end of capacitor C10; pin 19 of the Bluetooth chip is connected to one end of capacitor C7; pin 22 of the Bluetooth chip is connected to one end of capacitor C6; pin 31 of the Bluetooth chip is connected to one end of capacitor C2; pin 32 of the Bluetooth chip is connected to one end of inductor L2; the other end of inductor L2 is connected to one end of capacitor C1, one end of capacitor C4, and one end of inductor L1; and the other end of inductor L1 is connected to one end of capacitor C3.

3. The smart Bluetooth USB flash drive according to claim 1, characterized in that, The USB HUB circuit includes: pin 1 of the USB HUB chip is connected to one end of capacitor C22 and one end of crystal oscillator X2 respectively; pin 2 of the USB HUB chip is connected to the other end of crystal oscillator X2 and one end of capacitor C23 respectively; the other end of capacitor C22 is connected to the other end of capacitor C23 respectively; pin 9 of the USB HUB chip is connected to one end of resistor R6; pin 10 of the USB HUB chip is connected to one end of resistor R4; pin 15 of the USB HUB chip is connected to one end of resistor R2, one end of capacitor C14, and one end of capacitor C15 respectively; pin 16 of the USB HUB chip is connected to one end of capacitor C18 and one end of capacitor C21 respectively; the other end of capacitor C14 is connected to the other end of capacitor C15, the other end of capacitor C18, the other end of capacitor C21, and pin 17 of the USB HUB chip and is grounded.

4. The smart Bluetooth USB flash drive according to claim 1, characterized in that, The card reader control circuit includes: pin 1 of card reader chip U4 is connected to one end of capacitor C25 and one end of crystal oscillator X3 respectively; pin 2 of card reader chip U4 is connected to one end of capacitor C24 and the other end of crystal oscillator X3 respectively; the other end of capacitor C24 is connected to the other end of capacitor C25; pin 6 of card reader chip U4 is connected to one end of capacitor C28; pin 14 of card reader chip U4 is connected to the negative terminal of diode D1; the positive terminal of diode D1 is connected to one end of resistor R12; and pin 21 of card reader chip U4 is connected to one end of capacitor C26.

5. The smart Bluetooth USB flash drive according to claim 1, characterized in that, The 5V power supply circuit includes: pin 1 of the USB terminal is connected to one end of capacitor C16, one end of capacitor C17, and one end of resistor R3, and connected to VDD5V.

6. The smart Bluetooth USB flash drive according to claim 1, characterized in that, The low-dropout linear regulator circuit includes: pin 5 of the low-dropout linear regulator chip U2 is connected to one end of capacitor C19 and one end of capacitor C20 respectively, and the other end of capacitor C19 and the other end of capacitor C20 are both grounded.

7. The smart Bluetooth USB flash drive according to claim 2, characterized in that, The Bluetooth chip includes: BK3633.

8. The smart Bluetooth USB flash drive according to claim 3, characterized in that, The USB hub chip includes CH334P.

9. The intelligent Bluetooth USB flash drive according to claim 4, characterized in that, The card reader chip U4 includes CH377.

10. The smart Bluetooth USB flash drive according to claim 6, characterized in that, The low-dropout linear regulator chip U2 includes: AF6212.

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