CN207612468U - A kind of Bluetooth circuit plate and circuit board module - Google Patents
A kind of Bluetooth circuit plate and circuit board module Download PDFInfo
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- CN207612468U CN207612468U CN201721756799.2U CN201721756799U CN207612468U CN 207612468 U CN207612468 U CN 207612468U CN 201721756799 U CN201721756799 U CN 201721756799U CN 207612468 U CN207612468 U CN 207612468U
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- circuit
- bluetooth
- circuit board
- bluetooth chip
- capacitance
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- 239000013078 crystal Substances 0.000 claims abstract description 39
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model is related to a kind of circuit boards, concretely relate to a kind of Bluetooth circuit plate, including there are one circuit board body and the conductive printed circuits being set in the circuit board body, the conductive printed circuit includes multiple circuit board export contacts, multiple Bluetooth chip contacts, one and the integrated Bluetooth antenna of circuit board, main power source filter circuit, DC DC regulator circuits, DC DC voltage stabilizing resonance circuits, DC DC filter circuit of pressure-stabilizing, Bluetooth RF impedance matching and filter circuit, Bluetooth chip reset circuit, DC DC voltage stabilizings are uncoupled circuit, microprocessor crystal oscillating circuit, frequency synthesis crystal oscillating circuit, and ground contact.The Bluetooth antenna of miniaturization is produced in Bluetooth circuit plate, is convenient for carrying, signal reception is not influenced, considerably reduces the influence of extraneous factor, ensure that the signal receiving sensitivity of signal feed-in point is continual and steady.
Description
Technical field
The utility model is related to a kind of circuit boards, specifically, being to be related to a kind of Bluetooth circuit plate and Bluetooth circuit template die
Block.
Background technology
The circuit design of existing bluetooth module, in DC-DC voltage stabilizing resonance circuits, the oscillation of loop of voltage regulation frequent occurrence
It is too drastic to cause to generate interference signal, so that the antenna in bluetooth module is received the sensitivity decrease of signal.Meanwhile existing bluetooth mould
The circuit design of block, after working normally a period of time, clock module cannot accurately be run according to theoretical value, it may occur that clock is stagnant
Phenomenon afterwards leads to that data packet switch event occurs, prevents data from accurately and timely transmitting.
Utility model content
In order to solve above-mentioned deficiency, the utility model proposes a kind of Bluetooth circuit plates, including there are one circuit board body and setting
The conductive printed circuit being placed in circuit board body, conductive printed circuit include multiple circuit board export contacts, multiple bluetooth cores
Piece contact, one it is humorous with the integrated Bluetooth antenna of circuit board, main power source filter circuit, DC-DC regulator circuits, DC-DC voltage stabilizings
Shake circuit, DC-DC filter circuit of pressure-stabilizing, Bluetooth RF impedance matching and filter circuit, Bluetooth chip reset circuit, DC-DC is steady
Press uncouple circuit, microprocessor crystal oscillating circuit, frequency synthesis crystal oscillating circuit and ground contact.
Further, conductive printed circuit includes 16 circuit board export contacts and 32 Bluetooth chip contacts.
Further, conductive printed circuit includes 22 circuit board export contacts and 32 Bluetooth chip contacts.
Further, conductive printed circuit includes 32 Bluetooth chip contacts.
Further, conductive printed circuit includes 40 circuit board export contacts and 48 Bluetooth chip contacts.
The utility model also proposes a kind of Bluetooth circuit plate module, including there are one Bluetooth circuit plate, a Bluetooth chip,
And multiple circuit elements in Bluetooth circuit plate are set to, Bluetooth circuit plate is above-mentioned Bluetooth circuit plate, and Bluetooth chip is electrical
The Bluetooth chip contact being connected in Bluetooth circuit plate, multiple circuit elements include main power source filtering circuit element, DC-DC voltage stabilizings
Circuit element, DC-DC voltage stabilizings resonant circuit components, DC-DC filter circuit of pressure-stabilizing element, Bluetooth RF impedance matching and filtered electrical
Circuit component, Bluetooth chip reset circuit element, DC-DC voltage stabilizings are uncoupled circuit element, microprocessor crystal oscillating circuit element, Yi Jipin
Rate synthesis crystal oscillating circuit element, Bluetooth chip contact includes a DC-DC contact, and DC-DC regulator circuit elements further include one
A damping capacitor is set between DC-DC contacts and institute's ground contact.
Further, the capacitance of damping capacitor is preferably 0~220pF.
Further, the capacitance of damping capacitor is more preferably 20~30pF.
Further, Bluetooth chip is selected from the group being made of 4mmX4mm, 5mmX5mm, 6mmX6mm and 7mmX7mm
Group.
Further, microprocessor crystal oscillating circuit element further includes a pair of of crystal oscillator capacitance, and the capacitance of crystal oscillator capacitance is preferred
For 20pF~30pF.
Bluetooth circuit plate provided by the utility model, has the advantages that：
(1) it is set to the DC-DC contacts in DC-DC regulator circuits and the damping capacitor between ground contact, this damping electricity
Container has filtering and damping action in DC-DC loop of voltage regulation, and it is in order to anti-to increase damping capacitor in DC-DC regulator circuits
The only too drastic generation interference signal of the oscillation of DC-DC loop of voltage regulation avoids the sensitivity decrease for causing to receive signal.
(2) with the integrated Bluetooth antenna of circuit board, the Bluetooth antenna of miniaturization is produced in Bluetooth circuit plate, it is convenient
It carries, does not influence signal reception.Dispatch from the factory original-pack Bluetooth antenna, considerably reduces the influence of extraneous factor, including bluetooth day
The dismounting etc. of line ensures that the signal receiving sensitivity of signal feed-in point is continual and steady, the practical practicality to Bluetooth circuit plate module
Stability has very big meaning.
(3) it further includes a pair of of crystal oscillator capacitance to be set to microprocessor crystal oscillating circuit element, and the capacitance of crystal oscillator capacitance is preferred
For 20pF~30pF, a pair of of crystal oscillator capacitance setting is connected in parallel between crystal oscillator and ground contact.The crystal oscillator capacitance of capacitance can
The clock for adjusting crystal oscillator, is allowed to accurately run according to theoretical value, reduces the switch quantity of data packet, improves switch phenomenon.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, the utility model and its spy
Sign, shape and advantage will become more apparent upon.Identical label indicates identical part in whole attached drawings.Not deliberately according to
Ratio draws attached drawing, it is preferred that emphasis is shows the purport of the utility model.
Fig. 1 is the circuit composition schematic diagram of the utility model；
Fig. 2 is the way circuit figure of the utility model；
Fig. 3 is the reset circuit and voltage stabilizing decoupling circuit figure of the utility model；
Fig. 4 is the microprocessor crystal oscillating circuit figure and frequency synthesis crystal oscillating circuit figure of the utility model；
Fig. 5 is the Bluetooth RF impedance matching and filter circuit figure of the utility model；
Fig. 6 is the main power source filter circuit figure of the utility model；
Fig. 7 is the DC-DC voltage stabilizing resonance circuit figures of the utility model；
Fig. 8 is the DC-DC regulator circuit figures of the utility model；
Fig. 9 is the DC-DC filter circuit of pressure-stabilizing figures of the utility model；
Figure 10 is the circuit board line figure one of the utility model；
Figure 11 is the circuit board line figure two of the utility model；
Figure 12 is the circuit board line figure three of the utility model.
Specific implementation mode
In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model
Solution.It is, however, obvious to a person skilled in the art that the utility model may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
The utility model proposes a kind of Bluetooth circuit plates, including there are one circuit board body and being set to leading in circuit board body
Electric printed circuit, conductive printed circuit include multiple circuit board export contacts, multiple Bluetooth chip contacts, one and circuit board
Integrated Bluetooth antenna, main power source filter circuit, DC-DC regulator circuits, DC-DC voltage stabilizings resonance circuit, DC-DC voltage regulation filterings
Uncouple circuit, microprocessor of circuit, Bluetooth RF impedance matching and filter circuit, Bluetooth chip reset circuit, DC-DC voltage stabilizings is brilliant
Shake circuit, frequency synthesis crystal oscillating circuit and ground contact.
The contact namely pin of conductive printed circuit, contact, for user convenience, using the conduction of following 4 kinds of patterns
Printed circuit can to greatest extent meet the needs of users in highly integrated Bluetooth circuit plate, reduce the sky of unnecessary occupancy
Between and production cost.The conductive printed circuit of the first pattern is that 16 circuit boards export contact and 32 Bluetooth chips connect
Point；The conductive printed circuit of second of pattern is that 22 circuit boards export contact and 32 Bluetooth chip contacts；The third mould
The conductive printed circuit of formula is 32 Bluetooth chip contacts；The conductive printed circuit of 4th kind of pattern is that 40 circuit board export connect
Point and 48 Bluetooth chip contacts.
The utility model also proposes a kind of Bluetooth circuit plate module, including there are one Bluetooth circuit plate, a Bluetooth chip,
And multiple circuit elements in Bluetooth circuit plate are set to, Bluetooth circuit plate is above-mentioned Bluetooth circuit plate, and Bluetooth chip is electrical
The Bluetooth chip contact being connected in Bluetooth circuit plate, multiple circuit elements include main power source filtering circuit element, DC-DC voltage stabilizings
Circuit element, DC-DC voltage stabilizings resonant circuit components, DC-DC filter circuit of pressure-stabilizing element, Bluetooth RF impedance matching and filtered electrical
Circuit component, Bluetooth chip reset circuit element, DC-DC voltage stabilizings are uncoupled circuit element, microprocessor crystal oscillating circuit element, Yi Jipin
Rate synthesis crystal oscillating circuit element, Bluetooth chip contact includes a DC-DC contact, and DC-DC regulator circuit elements further include one
A damping capacitor is set between DC-DC contacts and institute's ground contact.
Further, the capacitance of damping capacitor is preferably 0~220pF.
Further, the capacitance of damping capacitor is more preferably 20~30pF.
Further, Bluetooth chip is selected from the group being made of 4mmX4mm, 5mmX5mm, 6mmX6mm and 7mmX7mm
Group.Bluetooth chip uses CC2640R2 models, using the communication protocol of bluetooth 5.0.This 4 kinds of package dimensions are arranged in Bluetooth circuit
In plate module, applicable a variety of different demands.
As shown in figure 3, the left side is reset circuit, including first resistor and the 20th capacitance, one end connection of first resistor
The 28th pin, the 11st pin, the 18th pin of Bluetooth chip, the other end connection reset button of first resistor, Bluetooth chip
The other end of one end of the 19th pin, the 20th capacitance, the 20th capacitance connects ground contact, and the lower left corner is voltage stabilizing decoupling circuit
Figure, including the 19th capacitance, the 12nd pin of one end connection Bluetooth chip of the 19th capacitance, the other end of the 19th capacitance connect
Ground contact is connect, the preferred capacitance of the 19th capacitance is 1uF.As shown in figure 4, the 4th pin of microprocessor U1 and the 5th pin
Connection is crystal oscillating circuit, including the first crystal oscillator and a pair of of crystal oscillator capacitance, respectively the 17th capacitance and the 18th capacitance, crystal oscillator
The capacitance of capacitance is preferably 20pF~30pF, and one end of the 17th capacitance connects the 4th pin, and the other end connects ground contact；
One end of 18th capacitance connects the 5th pin, and the other end connects ground contact.One end of first crystal oscillator is connected to the 4th pin, separately
One end connects the 5th pin.In actual use, it is not powered on the problem of crystal oscillating circuit of appearance will produce time lag, is being added
The clock that can adjust crystal oscillator after the crystal oscillator capacitance of the capacitance, is allowed to accurately run according to theoretical value, reduces data packet
Switch quantity improves switch phenomenon.What the 30th pin of microprocessor U1 and the 31st pin connected is frequency synthesis crystal oscillator electricity
Road.
As shown in figure 5, for Bluetooth RF impedance matching and filter circuit figure, existing design is used.As shown in fig. 6,
For main electric source filter circuit figure, existing design is used.
As shown in figure 9, being DC-DC filter circuit of pressure-stabilizing figures, which is the DC-DC voltage regulation filterings inside Bluetooth chip
Draw the 29th of circuit, including the 8th capacitance, the 9th capacitance, the 16th capacitance, the tenth capacitance, the 8th capacitance one end and Bluetooth chip
Foot and the connection of the 32nd pin, the other end are connect with ground contact, capacitance 10uF；The of 9th capacitance one end and Bluetooth chip
29 pins connect, and the other end is connect with ground contact, capacitance 100nF；The 32nd of 16th capacitance one end and Bluetooth chip
Pin connects, and the other end is connect with ground contact, capacitance 100nF；32nd pin of the tenth capacitance one end and Bluetooth chip
Connection, the other end are connect with ground contact.
As shown in fig. 7, being DC-DC voltage stabilizing resonance circuit figures, including the first inductance and damping capacitor CT1, the first inductance one
End is connect with the 29th pin of Bluetooth chip and the 32nd pin, the 17th pin connection of the other end and Bluetooth chip；Damping capacitor
17th pin of the one end CT1 and Bluetooth chip connects, and the other end is connect with ground contact.Fig. 8 is the DC-DC voltage stabilizing electricity in Fig. 7
Road has added a damping capacitor CT1, and the capacitance of damping capacitor CT1 is preferably 0~220pF, more preferably 20~30pF, resistance
Buddhist nun's capacitance CT1 has filtering and damping action in DC-DC loop of voltage regulation, increases damping in DC-DC voltage stabilizing resonance circuits
Capacitance CT1 can prevent the too drastic generation interference signal of the oscillation of DC-DC loop of voltage regulation, avoid the sensitivity for causing to receive signal drop
It is low.
As shown in Figure 10, it is the antenna part of the circuit board line figure of the utility model, is integrated with Bluetooth circuit plate
Bluetooth antenna, be as seen from the figure IFA antennas；As is illustrated by figs. 11 and 12 or helical antenna, helical antenna can be with indigo plants
Tooth circuit board is arranged at an inclined angle, and helical antenna can be also vertically arranged in Bluetooth circuit plate, with Bluetooth circuit plate one
Bodyization makes.The Bluetooth antenna of miniaturization is produced in Bluetooth circuit plate, is convenient for carrying, does not influence signal reception.With bluetooth
The integrated Bluetooth antenna of circuit board refers to making Bluetooth antenna in the circuit board, is the non-removable part of circuit board,
Also it can encapsulate in the circuit board.Dispatch from the factory original-pack with the integrated Bluetooth antenna of Bluetooth circuit plate, considerably reduce it is extraneous because
The influence of element, includes the dismounting etc. of Bluetooth antenna, ensures that the signal receiving sensitivity of signal feed-in point is continual and steady, to bluetooth electricity
The practical practical Stability of road plate module has very big meaning.
The operation principle of the utility model is：Multiple Bluetooth circuit plate modules and MCU are wirelessly connected, program is burnt at
In MCU, control instruction is sent out to Bluetooth chip CC2640 by MCU, control instruction includes waking up instruction, interrupt instruction, data
Send instruction, data receiver instruction.Bluetooth chip CC2640 passes through multiple output interfaces and input interface and external circuit simultaneously
Connection, external circuit are the conductive printed circuit for adding electronic component of the utility model；5 of Bluetooth chip CC2640 draw
Foot output pulse width modulated signal, 5 pins control signal, 8 pins by universal input/output interface transmission sensor
Input analog-to-digital conversion signal, 13 pins are programmable input/output interface, Bluetooth chip CC2640 by with external circuit
Cooperation is common to execute the control instruction for completing MCU.
After the positive and negative anodes of Bluetooth circuit plate are powered, Bluetooth chip CC2640 receptions are transmitted from main power source filter circuit
Power supply makes the crystal oscillator of microprocessor crystal oscillating circuit generate clock signal, and the reset signal generated as necessary by reset circuit is clear
Except the data of chip storage inside, prepare receiving and transmitting signal；If Bluetooth antenna receives electromagnetic wave signal, electromagnetic wave signal is passed through into letter
Number load point is transferred to Bluetooth chip by " Bluetooth RF impedance matching and filter circuit " again；If Bluetooth antenna needs to send electricity
Magnetostatic wave signal, microprocessor will need the signal sent to generate electric signal, then pass through regulator circuit, voltage stabilizing resonance circuit, voltage stabilizing
Filter circuit, then Bluetooth antenna is sent to by Bluetooth RF impedance matching and filter circuit, by Bluetooth antenna by electric signal
It sends.
The preferred embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as with the common side in this field
Formula is practiced；Any technical person familiar with the field all may be used in the case where not departing from technical solutions of the utility model ambit
Many possible changes and modifications are made to technical solutions of the utility model using the methods and technical content of the disclosure above, or are repaiied
It is changed to the equivalent embodiment of equivalent variations, this has no effect on the substantive content of the utility model.Therefore, every without departing from this practicality
The content of new technique scheme, any simple modification made to the above embodiment of foundation the technical essence of the utility model, etc.
With variation and modification, still fall within technical solutions of the utility model protection in the range of.
Claims (10)
1. a kind of Bluetooth circuit plate, including there are one circuit board body and the conductive printed circuit being set in the circuit board body,
It is characterized in that：
The conductive printed circuit includes multiple circuit board export contacts, multiple Bluetooth chip contacts, one and circuit board one
Bluetooth antenna, main power source filter circuit, DC-DC regulator circuits, DC-DC voltage stabilizings resonance circuit, the DC-DC voltage regulation filtering electricity of body
Road, Bluetooth RF impedance matching and filter circuit, Bluetooth chip reset circuit, DC-DC voltage stabilizings are uncoupled circuit, microprocessor crystal oscillator
Circuit, frequency synthesis crystal oscillating circuit and ground contact.
2. Bluetooth circuit plate according to claim 1, which is characterized in that the conductive printed circuit includes described in 16
Circuit board exports contact and 32 Bluetooth chip contacts.
3. Bluetooth circuit plate according to claim 1, which is characterized in that the conductive printed circuit includes described in 22
Circuit board exports contact and 32 Bluetooth chip contacts.
4. Bluetooth circuit plate according to claim 2 or 3, which is characterized in that the conductive printed circuit includes 32
The Bluetooth chip contact.
5. Bluetooth circuit plate according to claim 1, which is characterized in that the conductive printed circuit includes described in 40
Circuit board exports contact and 48 Bluetooth chip contacts.
6. a kind of Bluetooth circuit plate module, including there are one Bluetooth circuit plate, a Bluetooth chip and being set to the bluetooth
Multiple circuit elements on circuit board, which is characterized in that
The Bluetooth circuit plate is the Bluetooth circuit plate described in Claims 1 to 5 any of which item, and the Bluetooth chip electrically connects
The Bluetooth chip contact being connected in the Bluetooth circuit plate, the multiple circuit element include main power source filtering circuit element, DC-
DC regulator circuits element, DC-DC voltage stabilizings resonant circuit components, DC-DC filter circuit of pressure-stabilizing element, Bluetooth RF impedance matching with
Filtering circuit element, Bluetooth chip reset circuit element, DC-DC voltage stabilizings uncouple circuit element, microprocessor crystal oscillating circuit element,
And frequency synthesis crystal oscillating circuit element, the Bluetooth chip contact include a DC-DC contact, the DC-DC voltage stabilizings electricity
Circuit component further includes a damping capacitor, is set between the DC-DC contacts and the ground contact.
7. Bluetooth circuit plate module according to claim 6, which is characterized in that the capacitance of the damping capacitor is preferably
0~220pF.
8. Bluetooth circuit plate module according to claim 7, which is characterized in that the capacitance of the damping capacitor is more preferable
For 20~30pF.
9. Bluetooth circuit plate module according to claim 6, which is characterized in that the Bluetooth chip be selected from by
The group that 4mmX4mm, 5mmX5mm, 6mmX6mm and 7mmX7mm are constituted.
10. Bluetooth circuit plate module according to claim 6, which is characterized in that the microprocessor crystal oscillating circuit element
Further include a pair of of crystal oscillator capacitance, the capacitance of the crystal oscillator capacitance is preferably 20pF~30pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756799.2U CN207612468U (en) | 2017-12-15 | 2017-12-15 | A kind of Bluetooth circuit plate and circuit board module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756799.2U CN207612468U (en) | 2017-12-15 | 2017-12-15 | A kind of Bluetooth circuit plate and circuit board module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612468U true CN207612468U (en) | 2018-07-13 |
Family
ID=62798287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721756799.2U Active CN207612468U (en) | 2017-12-15 | 2017-12-15 | A kind of Bluetooth circuit plate and circuit board module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207612468U (en) |
-
2017
- 2017-12-15 CN CN201721756799.2U patent/CN207612468U/en active Active
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