CN203225751U - A Bluetooth module applied to wireless transmission products - Google Patents
A Bluetooth module applied to wireless transmission products Download PDFInfo
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- CN203225751U CN203225751U CN 201320157178 CN201320157178U CN203225751U CN 203225751 U CN203225751 U CN 203225751U CN 201320157178 CN201320157178 CN 201320157178 CN 201320157178 U CN201320157178 U CN 201320157178U CN 203225751 U CN203225751 U CN 203225751U
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- circuit
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- bluetooth
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Abstract
The utility model discloses a Bluetooth module applied to wireless transmission products. The Bluetooth module comprises a Bluetooth GC-01 surface mounted chip and a serial port communication circuit, an audio balanced/unbalanced output circuit, and an audio bias circuit, which are connected with the Bluetooth GC-01 surface mounted chip, wherein the serial port communication circuit adopts an RS232 chip, and T1-IN and R1-OUT pins of the RS232 chip are respectively connected with an UART-RXD pin and an UART-TXD pin of the Bluetooth GC-01 surface mounted chip, thereby realizing the conversion from a TTL level to an RS232 level. The Bluetooth module not only can realize a wireless remote control function, but also can realize an audio wireless transmission function simultaneously; and the Bluetooth module is simple in circuit design, small in size, and suitable for being applied to the portable wireless transmission products.
Description
Technical field
The utility model belongs to the electronic technology product, is specifically related to the Bluetooth wireless transmission module of using in the wireless transmission product scope.
Background technology
At present, Bluetooth technology is used for field of mobile phones more on the market, and under clog-free situation, communication distance is about 10m, because communication distance is short, is applied so be difficult in the remote control product.
The utility model content
For solving the above-mentioned defective that prior art exists, the purpose of this utility model is to provide a kind of bluetooth module that is applied in the wireless transmission product.Its circuit is simple, volume is little, cost is low, and communication distance can reach 100m, can either realize the wireless transmission function of audio frequency, also can realize the wireless remote control function simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: this is applied to the bluetooth module in the wireless transmission product, comprise the SMD chip of bluetooth GC-01 and the serial communication circuit, audio balance/non-equilibrium output circuit and the audio frequency biasing circuit that connect with it, it is characterized in that: described serial communication circuit adopts the RS232 chip, the T1-IN of described RS232 chip, R1-OUT pin link to each other with UART-RXD pin, the UART-TXD pin of the SMD chip of bluetooth GC-01 respectively, realize that Transistor-Transistor Logic level is to the conversion of RS232 level.
Described audio balance/non-equilibrium output circuit is realized balance output by two inductance coils and an electric capacity, the input of described inductance coil connects SPEAK+, the SPEAK-pin of the SMD chip of bluetooth GC-01 respectively, described balance output is realized non-equilibrium output through audio frequency transformer or conversion chip, connects power amplifier.
Described audio frequency biasing circuit is passive audio frequency biasing circuit
OrThe active audio frequency biasing circuit, the Audio INPUT input of described passive audio frequency biasing circuit, through audio frequency potentiometer and RC capacitance-resistance filter, output connects MIC+, the MIC-pin of the SMD chip of bluetooth GC-01, realizes the output of active audio frequency; The VDD of described active audio frequency biasing circuit is connected with Audio INPUT input through bias voltage circuit, RC rc filter circuit, LC LC filter circuit.
Adopt the beneficial effect of technique scheme: the utility model is by using hundred meters special-purpose bluetooth module GC-01 to realize that communication distance can reach the transfer of data of 100m.Its circuit is simple, volume is little, cost is low, practical, and communication distance can reach 100m, can either realize the wireless transmission function of audio frequency, also can realize the wireless remote control function simultaneously.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the SMD chip pin definition of bluetooth GC-01 figure.
Fig. 2 is the serial ports change-over circuit.
Fig. 3 is audio balance/non-equilibrium output circuit.
Fig. 4 is passive audio frequency biasing circuit.
Fig. 5 is the active audio frequency biasing circuit.
Embodiment
Shown in Fig. 1,2,3,4,5, be applied to bluetooth module in the wireless transmission product, comprise the SMD chip of bluetooth GC-01 and the serial communication circuit, audio balance/non-equilibrium output circuit and the audio frequency biasing circuit that connect with it.
Serial communication circuit as shown in Figure 2 adopts the RS232 chip, and the T1-IN of described RS232 chip, R1-OUT pin link to each other with UART-RXD pin, the UART-TXD pin of the SMD chip of bluetooth GC-01 respectively, realizes that Transistor-Transistor Logic level is to the conversion of RS232 level.
Audio balance as shown in Figure 3/non-equilibrium output circuit is realized balance output by two inductance coils and an electric capacity, the input of described inductance coil connects SPEAK+, the SPEAK-pin of the SMD chip of bluetooth GC-01 respectively, described balance output is realized non-equilibrium output through audio frequency transformer or conversion chip, connects power amplifier.
Described audio frequency biasing circuit is passive audio frequency biasing circuit or active audio frequency biasing circuit.
Passive audio frequency biasing circuit as shown in Figure 4, the Audio INPUT input of described passive audio frequency biasing circuit, through audio frequency potentiometer and RC capacitance-resistance filter, output connects MIC+, the MIC-pin of the SMD chip of bluetooth GC-01, realizes the output of active audio frequency.
Active audio frequency biasing circuit as shown in Figure 5, the VDD of described active audio frequency biasing circuit is connected with Audio INPUT input through bias voltage circuit, RC rc filter circuit, LC LC filter circuit; Output connects MIC+, the MIC-pin of the SMD chip of bluetooth GC-01, realizes the output of active audio frequency.
Claims (3)
1. bluetooth module that is applied to the wireless transmission product, comprise the SMD chip of bluetooth GC-01 and the serial communication circuit, audio balance/non-equilibrium output circuit and the audio frequency biasing circuit that connect with it, it is characterized in that: described serial communication circuit adopts the RS232 chip, the T1-IN of described RS232 chip, R1-OUT pin link to each other with UART-RXD pin, the UART-TXD pin of the SMD chip of bluetooth GC-01 respectively, realize that Transistor-Transistor Logic level is to the conversion of RS232 level.
2. the bluetooth module that is applied to the wireless transmission product as claimed in claim 1, it is characterized in that: described audio balance/non-equilibrium output circuit is realized balance output by two inductance coils and an electric capacity, the input of described inductance coil connects SPEAK+, the SPEAK-pin of the SMD chip of bluetooth GC-01 respectively, the balance output is realized non-equilibrium output through audio frequency transformer or conversion chip, connects power amplifier.
3. the bluetooth module that is applied to the wireless transmission product as claimed in claim 1, it is characterized in that: described audio frequency biasing circuit is passive audio frequency biasing circuit or active audio frequency biasing circuit; The Audio INPUT input of described passive audio frequency biasing circuit, through audio frequency potentiometer and RC capacitance-resistance filter, output connects MIC+, the MIC-pin of the SMD chip of bluetooth GC-01, realizes the output of active audio frequency; The VDD of described active audio frequency biasing circuit is connected with Audio INPUT input through bias voltage circuit, RC rc filter circuit, LC LC filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157178 CN203225751U (en) | 2013-04-01 | 2013-04-01 | A Bluetooth module applied to wireless transmission products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157178 CN203225751U (en) | 2013-04-01 | 2013-04-01 | A Bluetooth module applied to wireless transmission products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225751U true CN203225751U (en) | 2013-10-02 |
Family
ID=49252740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320157178 Expired - Lifetime CN203225751U (en) | 2013-04-01 | 2013-04-01 | A Bluetooth module applied to wireless transmission products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681782A (en) * | 2017-10-16 | 2018-02-09 | 广东求精电气有限公司 | A kind of control system of intelligent circuit breaker based on wireless network |
-
2013
- 2013-04-01 CN CN 201320157178 patent/CN203225751U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681782A (en) * | 2017-10-16 | 2018-02-09 | 广东求精电气有限公司 | A kind of control system of intelligent circuit breaker based on wireless network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |
|
| CX01 | Expiry of patent term |