CN106229940A - A kind of blue-tooth device of short-circuit protection - Google Patents
A kind of blue-tooth device of short-circuit protection Download PDFInfo
- Publication number
- CN106229940A CN106229940A CN201610722413.XA CN201610722413A CN106229940A CN 106229940 A CN106229940 A CN 106229940A CN 201610722413 A CN201610722413 A CN 201610722413A CN 106229940 A CN106229940 A CN 106229940A
- Authority
- CN
- China
- Prior art keywords
- circuit
- short
- bluetooth module
- field effect
- effect transistor
- 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.)
- Pending
Links
- 230000000052 comparative effect Effects 0.000 claims abstract description 4
- 230000005669 field effect Effects 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses the blue-tooth device of a kind of short-circuit protection; including the bluetooth module for communicating wirelessly and for bluetooth module provide electric energy power port; connect between described bluetooth module and power port and have short-circuit protection circuit; described short-circuit protection circuit includes testing circuit, on-off circuit and ON-OFF control circuit; wherein, described testing circuit is for detecting power port to the voltage condition between bluetooth module；Described on-off circuit is connected between testing circuit and bluetooth module；Testing circuit voltage is compared by described ON-OFF control circuit with reference voltage, and is controlled the break-make situation of on-off circuit according to comparative result；The circuit structure of its short-circuit protection circuit is simple, it is simple to integrated, meets the use demand of bluetooth small size.
Description
Technical field
The present invention relates to blue-tooth device field, in particular it relates to the blue-tooth device of a kind of short-circuit protection.
Background technology
The short range wireless transmission of this kind of low-power consumption of quickly growing of Modem radio communication, particularly bluetooth is by widely
Be applied in various life the electronic product that can touch, such as keyboard, mouse, mobile phone etc., if in have Bluetooth chip, just
With corresponding electronic installation pairing, and can communicate wirelessly.
Hyundai Motor is towards electronization, automation direction development so that the fault diagnosis of automobile is not only machinery
Fault diagnosis, more of automated diagnostic.The automated diagnostic of Hyundai Motor uses the controller of notebook and automobile mostly
Realize connecting and realize fault diagnosis with acquisition data.Connection between notebook and automobile controller uses bluetooth connection side mostly
Formula.Bluetooth uses power supply power supply mode, bluetooth module will cause irremediable destruction, due to bluetooth mould if being short-circuited
Block amasss little, therefore is badly in need of that a kind of circuit structure is simple, be easy to integrated short-circuit protection circuit protects bluetooth module.
Summary of the invention
The present invention is to solve that above-mentioned technical problem provides the blue-tooth device of a kind of short-circuit protection, its short-circuit protection circuit
Circuit structure is simple, it is simple to integrated, meets the use demand of bluetooth small size.
The present invention solves the problems referred to above and be the technical scheme is that
The blue-tooth device of a kind of short-circuit protection, provides electric energy including the bluetooth module for communicating wirelessly with for bluetooth module
Power port, between described bluetooth module and power port connect have short-circuit protection circuit, described short-circuit protection circuit to include
Testing circuit, on-off circuit and ON-OFF control circuit, wherein,
Described testing circuit is for detecting power port to the voltage condition between bluetooth module；
Described on-off circuit is connected between testing circuit and bluetooth module；
Testing circuit voltage is compared by described ON-OFF control circuit with reference voltage, and according to comparative result to on-off circuit
Break-make situation be controlled.
As preferably, described on-off circuit includes that field effect transistor, described testing circuit include the first field effect transistor, described
The grid of one field effect transistor is connected to be connected on source electrode and with power port, and the drain electrode of the first field effect transistor is connected to second effect
In the drain electrode answered, the source electrode of described second field effect transistor is connected on bluetooth module.
Further, described ON-OFF control circuit includes comparator, and an input of described comparator is connected to power end
On mouth, another input is connected on reference voltage circuit, and the outfan of described comparator is connected to the grid of the second field effect transistor
Extremely go up.
Further, described reference voltage circuit includes the first electricity that bleeder circuit, described bleeder circuit include being in series
Resistance and the second resistance, the not common end ground connection of described second resistance, the not common end of described first resistance is connected to reference voltage
On, the common port of described first resistance and the second resistance is connected on an input of comparator.
Further, described first field effect transistor is P-channel field-effect transistor (PEFT) pipe.
To sum up, the invention has the beneficial effects as follows:
The present invention connects short-circuit protection circuit between bluetooth module and power port, it is to avoid bluetooth module is broken by short circuit
Bad, the circuit structure of this short-circuit protection circuit is simple, it is easy to integrated, is suitable to the use demand of bluetooth module small size.
Accompanying drawing explanation
Fig. 1 is originally to be the circuit diagram of invention short-circuit protection circuit.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, aobvious
So, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the enforcement in the present invention
Example, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into
The scope of protection of the invention.
Embodiment 1:
The blue-tooth device of a kind of short-circuit protection, provides electric energy including the bluetooth module for communicating wirelessly with for bluetooth module
Power port, between described bluetooth module and power port connect have short-circuit protection circuit, described short-circuit protection circuit to include
Testing circuit, on-off circuit and ON-OFF control circuit, wherein,
Described testing circuit is for detecting power port to the voltage condition between bluetooth module；
Described on-off circuit is connected between testing circuit and bluetooth module；
Testing circuit voltage is compared by described ON-OFF control circuit with reference voltage, and according to comparative result to on-off circuit
Break-make situation be controlled.
Embodiment 2:
As it is shown in figure 1, the present embodiment is on the basis of above-described embodiment, short-circuit protection circuit is refined, the most described switch
Circuit includes that field effect transistor, described testing circuit include the first field effect transistor M1, and the grid of described first field effect transistor M1 connects
Being connected on source electrode and with power port, the drain electrode of the first field effect transistor M1 is connected in the drain electrode of the second field effect M2, described
The source electrode of the second field effect transistor M2 is connected on bluetooth module.
Described ON-OFF control circuit includes that comparator A, an input of described comparator A are connected on power port, separately
One input is connected on reference voltage circuit, and the outfan of described comparator A is connected on the grid of the second field effect transistor M2.
Described reference voltage circuit includes the first resistance R1 and second that bleeder circuit, described bleeder circuit include being in series
Resistance R2, the not common end ground connection of described second resistance R2, the not common end of described first resistance R1 is connected to reference voltage U
On, the common port of described first resistance R1 and the second resistance R2 is connected on an input of comparator A.
Described first field effect transistor M1 is P-channel field-effect transistor (PEFT) pipe.
The short-circuit protection circuit of this programme works as the power port overtension that is short-circuited, comparator one input terminal voltage liter
High so that comparator two input terminal voltage increases, and comparator output signal turns off the second field effect transistor, reaches the mesh of short-circuit protection
's.
As it has been described above, the present invention can preferably be realized.
Claims (5)
1. a blue-tooth device for short-circuit protection, provides electricity including the bluetooth module for communicating wirelessly with for bluetooth module
The power port of energy, it is characterised in that: connect between described bluetooth module and power port and have short-circuit protection circuit, described short circuit
Protection circuit includes testing circuit, on-off circuit and ON-OFF control circuit, wherein,
Described testing circuit is for detecting power port to the voltage condition between bluetooth module；
Described on-off circuit is connected between testing circuit and bluetooth module；
Testing circuit voltage is compared by described ON-OFF control circuit with reference voltage, and according to comparative result to on-off circuit
Break-make situation be controlled.
The blue-tooth device of a kind of short-circuit protection the most according to claim 1, it is characterised in that: described on-off circuit includes field
Effect pipe, described testing circuit include the first field effect transistor, the grid of described first field effect transistor be connected on source electrode and with electricity
Source port is connected, and the drain electrode of the first field effect transistor is connected in the drain electrode of the second field effect, the source electrode of described second field effect transistor
It is connected on bluetooth module.
The blue-tooth device of a kind of short-circuit protection the most according to claim 2, it is characterised in that: described ON-OFF control circuit bag
Including comparator, an input of described comparator is connected on power port, and another input is connected on reference voltage circuit,
The outfan of described comparator is connected on the grid of the second field effect transistor.
The blue-tooth device of a kind of short-circuit protection the most according to claim 3, it is characterised in that: described reference voltage circuit bag
Including bleeder circuit, described bleeder circuit includes the first resistance and the second resistance being in series, the not common end of described second resistance
Ground connection, the not common end of described first resistance is connected on reference voltage, and the common port of described first resistance and the second resistance is even
It is connected on an input of comparator.
The blue-tooth device of a kind of short-circuit protection the most according to claim 2, it is characterised in that: described first field effect transistor is
P-channel field-effect transistor (PEFT) pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722413.XA CN106229940A (en) | 2016-08-25 | 2016-08-25 | A kind of blue-tooth device of short-circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722413.XA CN106229940A (en) | 2016-08-25 | 2016-08-25 | A kind of blue-tooth device of short-circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106229940A true CN106229940A (en) | 2016-12-14 |
Family
ID=57554420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722413.XA Pending CN106229940A (en) | 2016-08-25 | 2016-08-25 | A kind of blue-tooth device of short-circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106229940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505513A (en) * | 2016-12-26 | 2017-03-15 | 广东工业大学 | A kind of LED drive power and its outfan short-circuit protection circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988341A (en) * | 2005-12-21 | 2007-06-27 | 鸿富锦精密工业（深圳）有限公司 | Power supply circuit |
| CN101640552A (en) * | 2009-04-30 | 2010-02-03 | 旭丽电子(广州)有限公司 | Bluetooth device |
| CN202405762U (en) * | 2011-11-22 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | Protection circuit |
| CN204216575U (en) * | 2014-11-19 | 2015-03-18 | 广东电网有限责任公司电力科学研究院 | Charge protector of battery and charging device |
| CN104460798A (en) * | 2014-10-28 | 2015-03-25 | 美科微半导体（上海）有限公司 | Method and application of reference voltage correcting circuit for controlling buck converter |
| CN104617549A (en) * | 2015-02-06 | 2015-05-13 | 青岛歌尔声学科技有限公司 | Overvoltage protecting circuit and electronic product |
| CN105514932A (en) * | 2015-12-08 | 2016-04-20 | 深圳天珑无线科技有限公司 | Short circuit protection circuit of power supply |
| CN205986108U (en) * | 2016-08-25 | 2017-02-22 | 成都优购科技有限公司 | Bluetooth module with short -circuit protection |
-
2016
- 2016-08-25 CN CN201610722413.XA patent/CN106229940A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988341A (en) * | 2005-12-21 | 2007-06-27 | 鸿富锦精密工业（深圳）有限公司 | Power supply circuit |
| CN101640552A (en) * | 2009-04-30 | 2010-02-03 | 旭丽电子(广州)有限公司 | Bluetooth device |
| CN202405762U (en) * | 2011-11-22 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | Protection circuit |
| CN104460798A (en) * | 2014-10-28 | 2015-03-25 | 美科微半导体（上海）有限公司 | Method and application of reference voltage correcting circuit for controlling buck converter |
| CN204216575U (en) * | 2014-11-19 | 2015-03-18 | 广东电网有限责任公司电力科学研究院 | Charge protector of battery and charging device |
| CN104617549A (en) * | 2015-02-06 | 2015-05-13 | 青岛歌尔声学科技有限公司 | Overvoltage protecting circuit and electronic product |
| CN105514932A (en) * | 2015-12-08 | 2016-04-20 | 深圳天珑无线科技有限公司 | Short circuit protection circuit of power supply |
| CN205986108U (en) * | 2016-08-25 | 2017-02-22 | 成都优购科技有限公司 | Bluetooth module with short -circuit protection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505513A (en) * | 2016-12-26 | 2017-03-15 | 广东工业大学 | A kind of LED drive power and its outfan short-circuit protection circuit |
| CN106505513B (en) * | 2016-12-26 | 2019-06-25 | 广东工业大学 | A kind of LED drive power and its output end short-circuit protection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3101756B1 (en) | Charging system | |
| CN102739235B (en) | Switching value acquisition insulating circuit | |
| CN105137260A (en) | Circuit for detecting the state of active antenna | |
| CN106229940A (en) | A kind of blue-tooth device of short-circuit protection | |
| CN205986108U (en) | Bluetooth module with short -circuit protection | |
| CN206431186U (en) | A kind of quiescent current test system | |
| CN209766595U (en) | overlength standby device | |
| CN203466962U (en) | Audio port identification circuit and communication device | |
| CN103501173A (en) | Pull-up resistor circuit for preventing inverse current transmission and input-output port circuit | |
| CN206004660U (en) | Bluetooth module with overvoltage protection | |
| CN206004661U (en) | A kind of bluetooth module with USB interface | |
| CN202565454U (en) | Line control circuit of earphone | |
| CN103033669B (en) | Limit peak point current-sensing circuit of switching power supply | |
| CN205986099U (en) | Bluetooth transmission module of tape light | |
| CN103929061A (en) | Constant flow source with single power supply adjustable | |
| CN103226724B (en) | A kind of NFC label and a kind of NFC electronic equipment | |
| CN103780279A (en) | Indoor energy efficiency management terminal communication module | |
| CN203537553U (en) | An Interface circuit realizing serial port and infrared multiplex functions | |
| CN204069292U (en) | For the earphone keystroke testing circuit of electric terminal | |
| CN201788242U (en) | Protection test device of USB equipment | |
| CN206237302U (en) | Slow switch circuit, RET modules and antenna for base station | |
| CN106340853A (en) | Bluetooth module with indicator lamp | |
| CN105891562A (en) | Direct current electronic load | |
| CN202565248U (en) | Transmit-receive commutation circuit of bilateral amplifier and hysteresis comparator | |
| CN106209179A (en) | There is the bluetooth module of USB interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
|
| RJ01 | Rejection of invention patent application after publication |