CN204597961U - A kind of bluetooth module - Google Patents

A kind of bluetooth module Download PDF

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Publication number
CN204597961U
CN204597961U CN201520307190.1U CN201520307190U CN204597961U CN 204597961 U CN204597961 U CN 204597961U CN 201520307190 U CN201520307190 U CN 201520307190U CN 204597961 U CN204597961 U CN 204597961U
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China
Prior art keywords
circuit
serial ports
bluetooth module
bluetooth
control circuit
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CN201520307190.1U
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Inventor
刘朝
李毅
廖峰
胡金辉
贺正林
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Aisino Corp
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Aisino Corp
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Abstract

The utility model relates to radio transmission technical field, discloses a kind of bluetooth module, and described bluetooth module comprises: bluetooth serial ports circuit (1); And control circuit (2), be connected with described bluetooth serial ports circuit (1), for: the information receiving from host (5), and this information is sent to mobile terminal (6) via described bluetooth serial ports circuit (1); Or receive the information from mobile terminal (6) via described bluetooth serial ports circuit (1), and information is sent to described main frame (5).The utility model bluetooth module can be widely used in the wireless transmission between main frame and mobile terminal.

Description

A kind of bluetooth module
Technical field
The utility model relates to radio transmission technical field, particularly, relates to a kind of bluetooth module.
Background technology
The interface convertor of the bluetooth equipment that Bluetooth adapter can be suitable for as main frame, can realize the communication of main frame and other mobile devices.But current Bluetooth adapter only has USB interface substantially, can not be used in the system not having usb host, the scope of application is little; And namely allow to use, also need install when connecting and drive, operation inconvenience.In addition, when realizing information transmission, need Serial Port Line and connect, cable connects loaded down with trivial details, cannot carry out the transmission of information in real time accurately.
Utility model content
The purpose of this utility model is to provide a kind of bluetooth module, can be widely used in the wireless transmission between main frame and mobile terminal.
To achieve these goals, the utility model provides a kind of bluetooth module, and described bluetooth module comprises: bluetooth serial ports circuit; And control circuit, be connected with described bluetooth serial ports circuit, for: the information receiving from host, and this information is sent to mobile terminal via described bluetooth serial ports circuit; Or receive the information from mobile terminal via described bluetooth serial ports circuit, and information is sent to described main frame.
Preferably, described bluetooth module also comprises: power supply circuits, connects described bluetooth serial ports circuit and control circuit respectively, for providing operating voltage for described bluetooth serial ports circuit and control circuit.
Preferably, described power supply circuits are low pressure difference linear voltage regulator.
Preferably, described bluetooth module also comprises: level shifting circuit, is arranged between described control circuit and main frame, for changing logic level when described control circuit and main frame information interaction.
Preferably, described control circuit has two groups of UART interface: one group for connecting described level shifting circuit, another group is for connecting described bluetooth serial ports circuit.
Preferably, described level shifting circuit is connected with described main frame by serial ports.
Preferably, described serial ports is RS232 interface.
Preferably, described bluetooth module also comprises: indicating circuit, is used to indicate the operating state of described bluetooth serial ports circuit.
Preferably, described indicating circuit is indicator light.
The utility model bluetooth module, by the setting of control circuit and bluetooth serial ports circuit, can be widely used in the wireless transmission between main frame and mobile terminal, instead of existing Serial Port Line simultaneously, avoids loaded down with trivial details cable to connect; Controlled by control circuit, the handoff functionality of bluetooth serial ports circuit and multiple mobile terminal wireless connections can be realized, improve the accuracy of information transmission.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the function structure chart of the utility model bluetooth module.
Description of reference numerals
1 bluetooth serial ports circuit 2 control circuit
3 power supply circuits 4 level shifting circuits
5 main frame 6 mobile terminals
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1, the utility model bluetooth module comprises bluetooth serial ports circuit 1; And control circuit 2, be connected with described bluetooth serial ports circuit 1, for: the information receiving from host 5, and this information is sent to mobile terminal 6 via described bluetooth serial ports circuit 1; Or receive the information from mobile terminal 6 via described bluetooth serial ports circuit 1, and information is sent to described main frame 5.
The utility model bluetooth module is by the setting of control circuit and bluetooth serial ports circuit, the wireless transmission between main frame and mobile terminal can be widely used in, instead of existing Serial Port Line simultaneously, avoid loaded down with trivial details cable to connect, decrease the design of peripheral circuit, can production cost be reduced; Also by the handoff functionality of control circuit control realization bluetooth serial ports circuit and multiple mobile terminal wireless connections, improve the accuracy of information transmission; Simple and convenient, practical.
As shown in Figure 1, the utility model also comprises power supply circuits 3, and described power supply circuits 3 connect described bluetooth serial ports circuit 1 and control circuit 2 respectively, for providing operating voltage for described bluetooth serial ports circuit 1 and control circuit 2.Wherein, described power supply circuits 3 are low pressure difference linear voltage regulator (low dropoutregulator, LDO), and described operating voltage is 3.3V.Voltage (such as+5V) step-down that external power source provides by described LDO obtains the operating voltage of 3.3V bluetooth module.Wherein, described LDO can be the chip of SPX1117M3-3.3 model, and this chip is with the fixing output of 3.3V voltage, and output current can reach 1A, and output voltage/electric current is stablized, and is conducive to the transmission of communication information.
In addition, operating voltage due to described main frame 5 is 5V, the utility model bluetooth module also comprises level shifting circuit 4, and described level shifting circuit 4 is arranged between described control circuit 2 and main frame 5, for changing described control circuit 2 and logic level during main frame 5 information interaction.Such as, when described control circuit 2 to need the information transmission that obtains from mobile terminal 6 to described main frame 5, logic level 3.3V is converted to 5V by described level shifting circuit 4; When described control circuit 2 needs to receive the information transmitted from described main frame 5, logic level 5V is converted to 3.3V by described level shifting circuit 4, thus realizes the transmission of information.Wherein, described level shifting circuit 4 is connected with described main frame 5 by serial ports.Preferably, described serial ports is RS232 interface.In the present embodiment, the model of selecting of described level shifting circuit 4 can be SPY3232ECY-L, but not as limit.
As shown in Figure 1, described control circuit 2 has two groups of URAT (Universal AsynchronousReceiver/transmitter, UART Universal Asynchronous Receiver Transmitter) interface: one group, for connecting described level shifting circuit 4, makes described control circuit 2 carry out the mutual of communication information by described serial ports and level shifting circuit 4 with described main frame 5; Another group, for connecting described bluetooth serial ports circuit 1, makes described control circuit 2 carry out the mutual of communication information by described bluetooth serial ports circuit 1 with mobile terminal 6.
In addition, the utility model bluetooth module, also by the setting of described control circuit 2, controls described bluetooth serial ports circuit 1, realizes connection and the disconnection of wireless transmission.In the present embodiment, described control circuit 2 adopts the single-chip microcomputer M0516LBN of 32, is provided with ARM Cortex tM-M0 kernel, the highlyest moves to 50MHZ external clock, is embedded with the flash storage of 64K byte, and 4K byte SRAM memory.The utility model bluetooth module carries out the transmission of data and instruction by the serial ports of M0516LBN.
And 1, described bluetooth serial ports circuit need receive serial ports AT (Attention, note) instruction, realize with the pairing of corresponding mobile terminal be connected, after wireless connections are good, be equivalent to a Serial Port Line, the radio communication of mobile terminal and main frame can be realized, avoid loaded down with trivial details cable to connect, improve the accuracy of information transmission.Wherein, described bluetooth serial ports circuit 1 can select BF-10SC module, and described BF-10SC module supports URAT interface and bluetooth serial ports agreement, has the advantages such as cost is low, volume is little.
When BF-10SC module work is in holotype, described BF-10SC module initiatively initiates the scanning to periphery Bluetooth slave devices, and initiatively initiates to match to connect according to the device address scanned.The device address scanned and device name are set up and are preserved list in described control circuit 2.Described BF-10SC module work is divided into AT command status and data penetration transmission state two kinds of patterns.After described BF-10SC module powers on, directly enter AT command status, the AT instruction sent by described control circuit 2 can be received, complete the bluetooth parameters amendments such as baud rate, PIN (Personal Identification Number, PIN), principal and subordinate's configuration; Send AT instruction at described control circuit 2, complete and to match and after connecting, described BF-10SC module enters data penetration transmission pattern, and the data of described control circuit 2 directly transfer to mobile terminal 6 by radio port.
Wherein, after described BF10-SC module connects and enters data penetration transmission pattern, not reprocessing AT instruction, the disconnection of equipment connection state needs the reset being controlled described BF10-SC module by described control circuit 2 to realize.Connect after disconnecting, described BF10-SC module reenters AT command status, by resending AT link order, realizes being connected with the pairing of another mobile terminal.According to scanning result, set up from device mac address list, the connection that can realize multiple mobile terminal easily switches.Wherein, described mobile terminal 6 can be POS (point of sale, point-of-sale terminal).
For intuitively determining the operating state of described bluetooth serial ports circuit 1 accurately, the utility model bluetooth module also comprises indicating circuit (not shown).Determined the operating state of described bluetooth serial ports circuit 1 by described indicating circuit, and then the operating state of the utility model bluetooth module can be determined.Wherein, described indicating circuit can be indicator light, and preferred version is LED.Such as: during holding state, described LED carries out evenly glimmering at a slow speed; Initiate in connection, described LED carries out fast blink; After connecting, described LED is long bright.
The utility model bluetooth module, by the setting of control circuit and bluetooth serial ports circuit, can make main frame and mobile terminal realize at any time wireless, convenient and swift; Also by the control of control circuit, realize the connection handoff functionality of bluetooth serial ports circuit and mobile terminal as required, guarantee the accuracy of information transmission.In addition, decrease the design of peripheral circuit, reduce cost, improve the reliability of system simultaneously.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (9)

1. a bluetooth module, is characterized in that, described bluetooth module comprises:
Bluetooth serial ports circuit (1); And
Control circuit (2), is connected with described bluetooth serial ports circuit (1), for:
Receive the information of from host (5), and this information is sent to mobile terminal (6) via described bluetooth serial ports circuit (1); Or
Receive the information from mobile terminal (6) via described bluetooth serial ports circuit (1), and information is sent to described main frame (5).
2. bluetooth module according to claim 1, is characterized in that, described bluetooth module also comprises:
Power supply circuits (3), connect described bluetooth serial ports circuit (1) and control circuit (2) respectively, for providing operating voltage for described bluetooth serial ports circuit (1) and control circuit (2).
3. bluetooth module according to claim 2, is characterized in that, described power supply circuits (3) are low pressure difference linear voltage regulator.
4. bluetooth module according to claim 1, is characterized in that, described bluetooth module also comprises:
Level shifting circuit (4), is arranged between described control circuit (2) and main frame (5), for changing described control circuit (2) and logic level during main frame (5) information interaction.
5. bluetooth module according to claim 4, it is characterized in that, described control circuit (2) has two groups of UART interface: one group for connecting described level shifting circuit (4), another group is for connecting described bluetooth serial ports circuit (1).
6. bluetooth module according to claim 4, is characterized in that, described level shifting circuit (4) is connected with described main frame (5) by serial ports.
7. bluetooth module according to claim 6, is characterized in that, described serial ports is RS232 interface.
8. bluetooth module according to claim 1, is characterized in that, described bluetooth module also comprises:
Indicating circuit, is used to indicate the operating state of described bluetooth serial ports circuit (1).
9. bluetooth module according to claim 8, is characterized in that, described indicating circuit is indicator light.
CN201520307190.1U 2015-05-13 2015-05-13 A kind of bluetooth module Active CN204597961U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106445861A (en) * 2016-08-05 2017-02-22 江苏星宇芯联电子科技有限公司 Multifunctional interconnecting device for supporting blue-tooth mode
CN107393046A (en) * 2017-08-03 2017-11-24 陕西尚品信息科技有限公司 A kind of method that bluetooth registers system and bluetooth is registered
CN108075547A (en) * 2017-12-30 2018-05-25 广州逊镭电子科技有限公司 A kind of barcode scanning circuit
CN113100707A (en) * 2021-03-25 2021-07-13 佛山科学技术学院 Frequency domain OCT system based on Bluetooth communication technology

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106445861A (en) * 2016-08-05 2017-02-22 江苏星宇芯联电子科技有限公司 Multifunctional interconnecting device for supporting blue-tooth mode
CN107393046A (en) * 2017-08-03 2017-11-24 陕西尚品信息科技有限公司 A kind of method that bluetooth registers system and bluetooth is registered
CN107393046B (en) * 2017-08-03 2019-08-06 陕西尚品信息科技有限公司 A kind of method that bluetooth registers system and bluetooth is registered
CN108075547A (en) * 2017-12-30 2018-05-25 广州逊镭电子科技有限公司 A kind of barcode scanning circuit
CN113100707A (en) * 2021-03-25 2021-07-13 佛山科学技术学院 Frequency domain OCT system based on Bluetooth communication technology

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