CN206004660U - Bluetooth module with overvoltage protection - Google Patents
Bluetooth module with overvoltage protection Download PDFInfo
- Publication number
- CN206004660U CN206004660U CN201620939554.2U CN201620939554U CN206004660U CN 206004660 U CN206004660 U CN 206004660U CN 201620939554 U CN201620939554 U CN 201620939554U CN 206004660 U CN206004660 U CN 206004660U
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- CN
- China
- Prior art keywords
- bluetooth module
- processing unit
- resistor
- overvoltage protection
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of bluetooth module with overvoltage protection; including the bluetooth module for communicating wirelessly, the processing unit is controlled by blue-tooth device, the power module of electric energy is provided for bluetooth module and processing unit, the output end of the power module is connected with overvoltage crowbar；Which has over-voltage protecting function, it is to avoid the overvoltage destruction that external disturbance is caused to blue-tooth device.
Description
Technical field
The utility model is related to blue-tooth device field, particularly relates to a kind of bluetooth module with overvoltage protection.
Background technology
What Modem radio was communicated quickly grows, and the short range wireless transmission of particularly this kind of low-power consumption of bluetooth is extensive
The electronic product that can touch in various life is applied to, for example keyboard, mouse, mobile phone etc., as long as interior have Bluetooth chip, just
Can match with corresponding electronic installation, and communicate wirelessly.
Hyundai Motor is towards electronization, automation direction development so that the fault diagnosis of automobile is not only mechanical device
Fault diagnosis, more is automated diagnostic.The automated diagnostic of Hyundai Motor is mostly using notebook and the controller of automobile
Realize connection fault diagnosis is realized to obtain data.Connection between notebook and automobile controller adopts bluetooth connection side mostly
Formula.Existing bluetooth module, it include bluetooth module, processing unit, power module, and power supply is directly bluetooth module, processes list
Unit provides power supply, and as bluetooth is by the way of power supply is powered, in use, for example electrostatic etc. easily passes through electricity to external disturbance
Source port is damaged to internal component.
Utility model content
The utility model provides a kind of bluetooth module with overvoltage protection to solve above-mentioned technical problem, and which had
Pressure defencive function, it is to avoid the overvoltage destruction that external disturbance is caused to blue-tooth device.
The technical scheme in the invention for solving the above technical problem is：
Bluetooth module with overvoltage protection, including the bluetooth module for communicating wirelessly, is carried out to blue-tooth device
The processing unit of control, the power module of electric energy is provided for bluetooth module and processing unit, the output end of the power module connects
It is connected to overvoltage crowbar.This programme is improved on the basis of existing technology, i.e., in output end and the bluetooth of power module
Connect overvoltage crowbar between device, processing unit, blue-tooth device is protected using overvoltage crowbar, it is to avoid be extraneous
Destruction of the overvoltage interference to blue-tooth device, improves the reliability and stability of blue-tooth device.
Preferably, the overvoltage crowbar includes first resistor, one end of the first resistor is connected to power supply mould
Block output end and the other end while be connected with bluetooth module power port, processing unit power port, the first resistor and place
The connected one end of reason unit power port is connected with bidirectional trigger diode by second resistance simultaneously and the end is simultaneously connected with
The T1 of bidirectional thyristor extremely goes up, and the other end of the bidirectional trigger diode is connected to the G of bidirectional thyristor and extremely goes up, described two-way
The T2 pole ground connection of IGCT.This overvoltage crowbar includes first resistor, second resistance, bidirectional trigger diode and two-way crystalline substance lock
Pipe.The T1 pole of bidirectional thyristor, T2 pole are main electrode, and G pole is control pole.First resistor plays metering function, it is to avoid big when over-pressed
Destruction of the electric current to blue-tooth device internal components.During voltage normal work, the voltage for being added in bidirectional trigger diode two ends is less than
Break over voltage, bidirectional trigger diode are not turned on, and bidirectional thyristor is in cut-off state, and load bluetooth module, processing unit are just
Normal powered operation；When external interference acts on power port, the voltage at bidirectional trigger diode two ends is added in more than turnover electricity
Pressure, bidirectional trigger diode are turned on, and trigger bidirectional thyristor conducting, it is to avoid load bluetooth module, processing unit have received crushing
Evil.Using the overvoltage crowbar, its circuit structure is simple, is easy to integrated.
Further, the Standard resistance range of the first resistor is 3 megohms to 8 megohms.
Further, the resistance of the first resistor is 4 megohms.
Further, the resistance of the second resistance is 400 ohm.
1st, the utility model is in connection overvoltage protection electricity between the output end of power module and blue-tooth device, processing unit
Road, is protected to blue-tooth device using overvoltage crowbar, it is to avoid destruction of the extraneous overvoltage interference to blue-tooth device, is improved blue
The reliability and stability of tooth device.
2nd, overvoltage crowbar of the present utility model is monitored to voltage using bidirectional trigger diode, when voltage is more than
During the break over voltage of bidirectional trigger diode, control bidirectional thyristor conducting is protected to load, and its circuit structure is simple, easily
In integrated.
Description of the drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of overvoltage crowbar of the present utility model.
Specific embodiment
With reference to embodiment and accompanying drawing, the technical scheme in the utility model embodiment is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on this reality
With the embodiment in new, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the utility model protection.
Embodiment 1：
A kind of bluetooth module with overvoltage protection as shown in Figure 1, including the bluetooth module for communicating wirelessly,
Processing unit that blue-tooth device is controlled, the power module of electric energy is provided for bluetooth module and processing unit, the power supply
The output end of module is connected with overvoltage crowbar.
Embodiment 2
The implementation of overvoltage crowbar has a lot, and the present embodiment is refined on the basis of above-described embodiment, tool
Body as shown in Fig. 2 i.e. described overvoltage crowbar includes first resistor R1, one end of first resistor R1 is connected to power supply
Module output end and the other end while be connected with bluetooth module power port, processing unit power port, first resistor R1
One end connected with processing unit power port is connected with bidirectional trigger diode VD by second resistance R2 and the end is while connect
The T1 for being connected on bidirectional thyristor VS extremely goes up, and the other end of the bidirectional trigger diode VD is connected to the G pole of bidirectional thyristor VS
On, the T2 pole ground connection of the bidirectional thyristor S.
The Standard resistance range of first resistor R1 is 3 megohms to 8 megohms.
The resistance of first resistor R1 is 4 megohms.
The resistance of second resistance R2 is 400 ohm.
As described above, the utility model preferably can be realized.
Claims (5)
1. the bluetooth module with overvoltage protection, including the bluetooth module for communicating wirelessly, controls to blue-tooth device
The processing unit of system, the power module of electric energy is provided for bluetooth module and processing unit, it is characterised in that：The power module
Output end is connected with overvoltage crowbar.
2. the bluetooth module with overvoltage protection according to claim 1, it is characterised in that：The overvoltage crowbar bag
Include first resistor, one end of the first resistor be connected to power module outlet and the other end at the same with bluetooth module power end
Mouth, processing unit power port are connected, and first resistor one end connected with processing unit power port passes through second resistance
Be connected with bidirectional trigger diode and the end be simultaneously connected with and extremely go up in the T1 of bidirectional thyristor, the bidirectional trigger diode another
One end is connected to the G of bidirectional thyristor and extremely goes up, the T2 pole ground connection of the bidirectional thyristor.
3. the bluetooth module with overvoltage protection according to claim 2, it is characterised in that：The resistance of the first resistor
Scope is 3 megohms to 8 megohms.
4. the bluetooth module with overvoltage protection according to claim 3, it is characterised in that：The resistance of the first resistor
For 4 megohms.
5. the bluetooth module with overvoltage protection according to claim 2, it is characterised in that：The resistance of the second resistance
For 400 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620939554.2U CN206004660U (en) | 2016-08-25 | 2016-08-25 | Bluetooth module with overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620939554.2U CN206004660U (en) | 2016-08-25 | 2016-08-25 | Bluetooth module with overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206004660U true CN206004660U (en) | 2017-03-08 |
Family
ID=58197586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620939554.2U Expired - Fee Related CN206004660U (en) | 2016-08-25 | 2016-08-25 | Bluetooth module with overvoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206004660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209178A (en) * | 2016-08-25 | 2016-12-07 | 成都优购科技有限公司 | A kind of overvoltage protection blue-tooth device |
-
2016
- 2016-08-25 CN CN201620939554.2U patent/CN206004660U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209178A (en) * | 2016-08-25 | 2016-12-07 | 成都优购科技有限公司 | A kind of overvoltage protection blue-tooth device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20170825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |