CN219577269U - Bluetooth one-to-many pairing circuit - Google Patents
Bluetooth one-to-many pairing circuit Download PDFInfo
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- CN219577269U CN219577269U CN202320274387.4U CN202320274387U CN219577269U CN 219577269 U CN219577269 U CN 219577269U CN 202320274387 U CN202320274387 U CN 202320274387U CN 219577269 U CN219577269 U CN 219577269U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a Bluetooth one-to-many pairing circuit, which comprises a singlechip controller and a selection control key, wherein a Bluetooth wireless communication module is arranged in the singlechip controller; the single-chip microcomputer controller is used for receiving the control signal of the selection control key and selecting one of the communication addresses to establish wireless communication connection with a Bluetooth device. If the user switches the input device and the connected devices frequently, only different MAC addresses are needed to be selected for broadcasting through the control keys, wireless connection switching of the wireless device is carried out, when a new host device is connected with the input device, the user does not need to frequently adopt a manual mode to carry out cross disconnection operation on the plurality of host devices such as the device 1, the device 2 and the like, and the use is more convenient for the user.
Description
Technical Field
The utility model relates to the technical field of electronic equipment, in particular to a Bluetooth one-to-many pairing circuit.
Background
In use of a daily bluetooth input device (e.g. keyboard, mouse etc.) the input device must first be disconnected from the input device if it is already connected to the device 1, and after the disconnection the input device must be disconnected from the device 1, the device 2 must be disconnected from the device, and if the user frequently switches between the device 1 and the device 2, the device 1 and the device 2 must be frequently cross-disconnected, which is relatively inconvenient for the user and thus less experienced.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present utility model is to propose a bluetooth one-to-many pairing circuit.
To achieve the above object, an embodiment of the present utility model provides a bluetooth one-to-many pairing circuit, including:
the Bluetooth wireless communication module is arranged in the singlechip controller;
the single chip microcomputer controller is used for receiving the control signals of the selection control keys and selecting one communication address to establish wireless communication connection with a Bluetooth device.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes:
the single chip microcomputer controller is connected with the keyboard keys through the keyboard interface circuit; wherein the selection control key is one or a combination of a plurality of keyboard keys.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes:
the single chip microcomputer controller is connected with the touch control board through the touch connection port;
further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes:
a battery;
the battery charging circuit is used for converting a power supply into a charging power supply of a battery so as to charge the battery, the battery charging circuit comprises a charging controller, the power input end of the charging controller is connected with the power supply output end, and the output end of the charging controller is connected with the battery.
Further, according to an embodiment of the present utility model, the battery charging circuit further includes a battery power detection circuit for detecting the battery power, the battery power detection circuit including:
a first resistor R38, wherein one end of the first resistor R38 is connected with the positive end of the battery;
and one end of the second resistor R50 is connected with the other end of the first resistor R38, and the other end of the second resistor R50 is connected with a voltage sampling end of the singlechip controller through a third resistor R46.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes: a power interface circuit for connection with a charging device to introduce the power source, the power interface comprising:
the USB interface is connected with the battery charging circuit;
the charging detection circuit comprises a fourth resistor R33, a fifth resistor R34 and a zener diode ZD37, wherein one end of the fourth resistor R33 is connected with the output end of the power supply, the other end of the fourth resistor R33 is respectively connected with one end of the fifth resistor R34, the cathode of the zener diode ZD37 and a voltage sampling end of the singlechip controller, the other end of the fifth resistor R34 is connected with the reference ground, and the anode of the zener diode ZD37 is connected with the reference ground.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes: the system power supply circuit is connected with the battery to control and output the power supply of the battery;
the system power supply circuit includes:
the first end of the control switch is connected with the battery, and the second end of the control switch is connected with the reference ground;
one end of the capacitor C515 is connected with the third end of the control switch, and the other end of the capacitor C515 is connected with the reference ground;
the inductor L1, one end of the inductor L1 is connected with the third end of the control switch;
the MOS tube Q13, the source of MOS tube Q13 with inductance L1's the other end is connected, MOS tube Q13 grid is connected with reference ground, MOS tube Q13's drain electrode with the singlechip controller is connected, in order to for the singlechip controller power supply.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes: the indication lamp circuit is respectively connected with the battery charging circuit and the singlechip controller to indicate the charging state under the control of the battery charging circuit or indicate the working state of Bluetooth wireless connection under the control of the singlechip controller.
Further, according to an embodiment of the present utility model, the bluetooth one-to-many pairing circuit further includes:
a Bluetooth antenna;
and the wireless signal filtering circuit is respectively connected with the singlechip controller and the Bluetooth antenna, so as to filter input and output signals of the singlechip controller and filter interference signals.
The Bluetooth one-to-many pairing circuit provided by the embodiment of the utility model is provided with a Bluetooth wireless communication module in a singlechip controller; the single-chip microcomputer controller is used for receiving the control signal of the selection control key and selecting one of the communication addresses to establish wireless communication connection with a Bluetooth device. In this way, if the user switches the connection of the input device between multiple devices frequently, only the control key is needed to select different MAC addresses for broadcasting, because the broadcast MAC addresses are different, the originally connected host device can be automatically disconnected from the input device, and the host device corresponding to another MAC address can be automatically paired with the input device broadcast by the new MAC address, that is, when the new host device is connected with the input device, the user does not need to frequently perform the disconnection operation on multiple host devices such as the device 1, the device 2 and the like in a manual mode, so that the use is more convenient for the user, and the use experience is better when the input device is required to be connected in a cross manner by multiple devices.
Drawings
Fig. 1 is a schematic diagram of a bluetooth one-to-many pairing circuit according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of a circuit structure of a SCM controller according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a keyboard interface circuit according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of a touch connection port circuit structure according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of a battery charging circuit according to an embodiment of the utility model
Fig. 6 is a schematic diagram of a power supply port circuit structure according to an embodiment of the present utility model;
fig. 7 is a schematic diagram of a system power supply circuit according to an embodiment of the present utility model;
fig. 8 is a schematic diagram of a circuit structure of an indicator lamp according to an embodiment of the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 and 2, an embodiment of the present utility model provides a bluetooth one-to-many pairing circuit, including: the Bluetooth wireless communication system comprises a singlechip controller and a selection control key, wherein a Bluetooth wireless communication module is arranged in the singlechip controller; that is, the single chip microcomputer controller comprises a controller and a Bluetooth wireless communication module, and the controller receives and transmits data through the Bluetooth wireless communication module, so that communication with other devices can be realized. For example, bluetooth communication can be performed with electronic devices such as a tablet computer and a smart phone in a bluetooth manner, so that signal input to the electronic devices is realized.
The selection control key is connected with the singlechip controller, and the singlechip controller is used for receiving the control signal of the selection control key and selecting one of the communication addresses to establish wireless communication connection with a Bluetooth device. In a specific application, by writing a plurality of mac addresses in the keyboard, a user can input instructions to the software by operating a combination key or a special key of the keyboard, and decide whether to use the mac address of device 1 or device 2.
The Bluetooth one-to-many pairing circuit provided by the embodiment of the utility model is provided with a Bluetooth wireless communication module in a singlechip controller; the single-chip microcomputer controller is used for receiving the control signal of the selection control key and selecting one of the communication addresses to establish wireless communication connection with a Bluetooth device. In this way, if the user switches the connection of the input device between multiple devices frequently, only the control key is needed to select different MAC addresses for broadcasting, because the broadcast MAC addresses are different, the originally connected host device can be automatically disconnected from the input device, and the host device corresponding to another MAC address can be automatically paired with the input device broadcast by the new MAC address, that is, when the new host device is connected with the input device, the user does not need to frequently perform the disconnection operation on multiple host devices such as the device 1, the device 2 and the like in a manual mode, so that the use is more convenient for the user, and the use experience is better when the input device is required to be connected in a cross manner by multiple devices.
Referring to fig. 1 and 3, the bluetooth one-to-many pairing circuit further includes: the single chip microcomputer controller is connected with the keyboard keys through the keyboard interface circuit; wherein the selection control key is one or a combination of a plurality of keyboard keys. The keyboard keys are detachably connected with the singlechip controller through a keyboard interface J8 as shown in FIG. 3. The keyboard interface J8 can be used for conveniently connecting keyboard keys, so that the assembly and disassembly are convenient. The keyboard interface circuit further comprises: the keyboard electrostatic absorption circuits ZD 39-ZD 62 are connected with the keyboard interface, so that the electrostatic generated by the keyboard keys is absorbed. The electrostatic absorption circuits ZD 39-ZD 62 of the keyboard can absorb the static electricity generated by the key core keys 103 when being pressed, so as to avoid the burning out of the singlechip controller CN2 by high-voltage static electricity.
Referring to fig. 1 and 4, the bluetooth one-to-many pairing circuit further includes: the single chip microcomputer controller is connected with the touch control board through the touch connection port J2; in fig. 4, the keyboard touch pad is detachably connected with the single-chip microcomputer controller through a touch connection port J2. The touch connection port J2 can be used for conveniently connecting the touch pad, so that the touch pad is convenient to mount and dismount during assembly.
Referring to fig. 1 and 5, the bluetooth one-to-many pairing circuit further includes: the battery charging circuit is used for converting a power supply into a charging power supply of the battery so as to charge the battery, the battery charging circuit comprises a charging controller U3, a power supply input end VCC of the charging controller U3 is connected with a power supply output end VBUS, and an output end BAT of the charging controller is connected with a battery interface CN 1. The charging controller U3 may control the charging of the battery, for example, after performing control output or voltage conversion on the input power of the power input terminal VCC, the battery is powered, so as to realize charging protection of the battery.
Referring to fig. 1 and 5, the battery charging circuit further includes a battery power detection circuit, the battery power detection circuit is configured to detect the battery power, and the battery power detection circuit includes: a first resistor R38 and a second resistor R50, wherein one end of the first resistor R38 is connected with the positive end of the battery; one end of the second resistor R50 is connected with the other end of the first resistor R38, and the other end of the second resistor R50 is connected with a voltage sampling end of the singlechip controller through a third resistor R46. As shown in fig. 5, the voltage dividing circuit is formed by the first resistor R38 and the second resistor R50, and after the input voltage of the battery is divided, the divided voltage is output to the single-chip microcomputer controller through the third resistor R46 and the signal terminal bat_adc, so that the single-chip microcomputer controller can obtain the electric quantity information of the battery, and prompt when the electric quantity is insufficient.
Referring to fig. 1 and 6, the bluetooth one-to-many pairing circuit further includes: a power interface circuit for connection with a charging device to introduce the power source, the power interface comprising: the USB interface is connected with the battery charging circuit; the USB interface may be a TYPE-C TYPE USB interface, thus facilitating connection with TYPE-C TYPE USB power supply equipment and introducing a power supply source so as to charge the battery.
The charging detection circuit comprises a fourth resistor R33, a fifth resistor R34 and a zener diode ZD37, one end of the fourth resistor R33 is connected with the output end of the power supply, the other end of the fourth resistor R33 is respectively connected with one end of the fifth resistor R34, the cathode of the zener diode ZD37 and a voltage sampling end of the singlechip controller, the other end of the fifth resistor R34 is connected with the reference ground, and the anode of the zener diode ZD37 is connected with the reference ground. The fourth resistor R33 and the fifth resistor R34 form a voltage dividing circuit, and the voltage of the power supply introduced by the USB interface can be divided and then output to the singlechip controller through the CHRG_DET signal end so that the singlechip controller can acquire the charging state and prompt the charging state. The voltage stabilizing diode ZD37 is used for stabilizing the voltage of the signal CHRG_DET input to the singlechip controller, so that the singlechip controller is protected, and the singlechip controller is prevented from being damaged by a pulse high-voltage signal.
Referring to fig. 1 and 7, the bluetooth one-to-many pairing circuit further includes: the system power supply circuit is connected with the battery to control and output the power supply of the battery; thus, the output power supply of the battery can be controlled. As shown in fig. 7, the system power supply circuit includes: the control switch SW1, the capacitor C515, the inductor L1 and the MOS tube Q13 are arranged, wherein the first end of the control switch SW1 is connected with the battery, and the second end of the control switch is connected with the reference ground; one end of the capacitor C515 is connected with the third end of the control switch SW1, and the other end of the capacitor C515 is connected with the reference ground; one end of the inductor L1 is connected with a third end of the control switch SW 1; the source electrode of the MOS tube Q13 is connected with the other end of the inductor L1, the grid electrode of the MOS tube Q13 is connected with the reference ground, and the drain electrode of the MOS tube Q13 is connected with the singlechip controller to supply power for the singlechip controller. The control switch SW1 can control the on/off of the output power of the battery. When the control switch SW1 is turned on, the battery output power passes through the control switch SW1, is filtered by the capacitor C515 and the inductor L1, and is output to the MOS transistor Q13, and the input power is reverse-connected and protected by the MOS transistor Q13. The battery power supply is output through the VDD_BAT signal end after passing through the MOS tube Q13, so as to supply power for each circuit module.
Referring to fig. 1 and 8, the bluetooth one-to-many pairing circuit further includes: the indication lamp circuit is respectively connected with the battery charging circuit and the singlechip controller to indicate the charging state under the control of the battery charging circuit or indicate the working state of Bluetooth wireless connection under the control of the singlechip controller. As shown in fig. 8, the indicator light circuit includes a plurality of indicator lights, and each indicator light can be turned on or off under the control of the single-chip microcomputer controller, so as to indicate a bluetooth working state, battery charging conversion and the like, so that a user can obtain the working state of the keyboard directly.
Referring to fig. 1 and 2, the bluetooth one-to-many pairing circuit further includes: the Bluetooth wireless signal filtering circuit is respectively connected with the singlechip controller and the Bluetooth antenna, so as to filter input and output signals of the singlechip controller and filter interference signals. As shown in fig. 2, the wireless signal filtering circuit may include an inductor L2, a capacitor C23, a capacitor C19, a resistor R13, a capacitor C20, an inductor L35, a capacitor C513, and a resistor R604, where the inductor L2, the capacitor C19, the resistor R13, the capacitor C20, the inductor L35, the capacitor C513, and the resistor R604 are sequentially connected, the capacitor C23 is connected with the inductor L2 and the single chip microcomputer controller, and the inductor L2, the capacitor C23, the capacitor C19, the resistor R13, the capacitor C20, the inductor L35, the capacitor C513, and the resistor R604 form a band-pass filtering circuit, so as to filter interference signals in input and output signals of the single chip microcomputer controller.
Although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the present utility model may be modified or equivalents substituted for some of the features thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.
Claims (9)
1. A bluetooth one-to-many pairing circuit, comprising:
the Bluetooth wireless communication module is arranged in the singlechip controller;
the single chip microcomputer controller is used for receiving the control signals of the selection control keys and selecting one communication address to establish wireless communication connection with a Bluetooth device.
2. The bluetooth one-to-many pairing circuit of claim 1, further comprising:
the single chip microcomputer controller is connected with the keyboard keys through the keyboard interface circuit; wherein the selection control key is one or a combination of a plurality of keyboard keys.
3. The bluetooth one-to-many pairing circuit of claim 1, further comprising:
and the singlechip controller is connected with the touch control board through the touch connection port.
4. The bluetooth one-to-many pairing circuit of claim 1, further comprising:
a battery;
the battery charging circuit is used for converting a power supply into a charging power supply of a battery so as to charge the battery, the battery charging circuit comprises a charging controller, the power input end of the charging controller is connected with the power supply output end, and the output end of the charging controller is connected with the battery.
5. The bluetooth one-to-many pairing circuit of claim 4 wherein the battery charging circuit further comprises a battery charge detection circuit for detecting the battery charge, the battery charge detection circuit comprising:
a first resistor (R38), wherein one end of the first resistor (R38) is connected with the positive end of the battery;
and one end of the second resistor (R50) is connected with the other end of the first resistor (R38), and the other end of the second resistor (R50) is connected with a voltage sampling end of the singlechip controller through a third resistor (R46).
6. The bluetooth one-to-many pairing circuit of claim 4, further comprising: a power interface circuit for connection with a charging device to introduce the power source, the power interface comprising:
the USB interface is connected with the battery charging circuit;
the charging detection circuit comprises a fourth resistor (R33), a fifth resistor (R34) and a zener diode (ZD 37), wherein one end of the fourth resistor (R33) is connected with the output end of the power supply, the other end of the fourth resistor (R33) is respectively connected with one end of the fifth resistor (R34), the cathode of the zener diode (ZD 37) and a voltage sampling end of the singlechip controller, the other end of the fifth resistor (R34) is connected with the reference ground, and the anode of the zener diode (ZD 37) is connected with the reference ground.
7. The bluetooth one-to-many pairing circuit of claim 4, further comprising: the system power supply circuit is connected with the battery to control and output the power supply of the battery; the system power supply circuit includes:
the first end of the control switch is connected with the battery, and the second end of the control switch is connected with the reference ground;
a capacitor (C515), one end of the capacitor (C515) is connected with the third end of the control switch, and the other end of the capacitor (C515) is connected with the reference ground;
an inductor (L1), wherein one end of the inductor (L1) is connected with a third end of the control switch;
the MOS tube (Q13), the source of MOS tube (Q13) with the other end of inductance (L1) is connected, MOS tube (Q13) grid is connected with reference ground, the drain electrode of MOS tube (Q13) with the singlechip controller is connected, in order to supply power for the singlechip controller.
8. The bluetooth one-to-many pairing circuit of claim 4, further comprising: the indication lamp circuit is respectively connected with the battery charging circuit and the singlechip controller to indicate the charging state under the control of the battery charging circuit or indicate the working state of Bluetooth wireless connection under the control of the singlechip controller.
9. The bluetooth one-to-many pairing circuit of claim 1, further comprising:
a Bluetooth antenna;
and the wireless signal filtering circuit is respectively connected with the singlechip controller and the Bluetooth antenna, so as to filter input and output signals of the singlechip controller and filter interference signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320274387.4U CN219577269U (en) | 2023-02-15 | 2023-02-15 | Bluetooth one-to-many pairing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320274387.4U CN219577269U (en) | 2023-02-15 | 2023-02-15 | Bluetooth one-to-many pairing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN219577269U true CN219577269U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320274387.4U Active CN219577269U (en) | 2023-02-15 | 2023-02-15 | Bluetooth one-to-many pairing circuit |
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| CN (1) | CN219577269U (en) |
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2023
- 2023-02-15 CN CN202320274387.4U patent/CN219577269U/en active Active
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