CN209201050U - A kind of light-coupled isolation serial communication device - Google Patents
A kind of light-coupled isolation serial communication device Download PDFInfo
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- CN209201050U CN209201050U CN201920049410.3U CN201920049410U CN209201050U CN 209201050 U CN209201050 U CN 209201050U CN 201920049410 U CN201920049410 U CN 201920049410U CN 209201050 U CN209201050 U CN 209201050U
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- light
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- coupled isolation
- triode
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Abstract
The utility model discloses a kind of light-coupled isolation serial communication devices, including resistance R1-R8, capacitor C1-C6, triode Q1-Q4, connector P1-P2, light-coupled isolation US1-US2 and integrated circuit U 1-U2；The utility model can be realized the communication of 115200 high bit rates using conventional low cost low speed optocoupler, reduces production cost, improves communication efficiency；The conversion that can be realized any level between DC1.8-5V keeps user more convenient in terms of level conversion；The wide pin pitch optocoupler of high isolation pressure resistance has been used, has been isolated high pressure resistant.
Description
Technical field
The utility model relates to arrive serial port communication technology field more particularly to a kind of light-coupled isolation serial communication device.
Background technique
On Vehicles Collected from Market, the problem of speed does not increase is always existed with the serial communication that common optocoupler constructs, and wants high
Speed communication must just be realized using expensive high speed photo coupling, and there are inconveniences in terms of realizing level conversion by user.
Therefore, the prior art is defective, needs to improve.
Utility model content
The utility model provides a kind of light-coupled isolation serial communication device, the above problem of solution.
To solve the above problems, the technical scheme that the utility model is provided is as follows:
A kind of light-coupled isolation serial communication device, including resistance R1-R8, capacitor C1-C6, triode Q1-Q4, connector
P1-P2, light-coupled isolation US1-US2 and integrated circuit U 1-U2；The 1st stitch of the connector P1 is respectively with the resistance R5's
First end, the first end of the capacitor C1, the 3rd pin of the integrated circuit U1, the light-coupled isolation US2 the 4th pin connect
It connects；The 2nd stitch of the connector P1 is connect with the collector of the second end of the resistance R5, the triode Q3 respectively；Institute
The 3rd stitch for stating connector P1 is connect by the resistance R4 with the base stage of the triode Q2；The 4th needle of the connector P1
Foot respectively with the second end of the resistance R7, the second end of the capacitor C1-C2, the triode Q2-Q3 emitter, described
The 1st pin of integrated circuit U1 connects；The 2nd pin of the integrated circuit U1 respectively with the first end of the capacitor C2, described
The 1st pin of light-coupled isolation US1 connects；The 2nd pin of the light-coupled isolation US1 respectively with the first end of the resistance R2, institute
State the first end connection of capacitor C3；The collector of the triode Q2 respectively with the second end of the resistance R2, the capacitor C3
Second end connection；The 4th pin of the light-coupled isolation US1 respectively with the first end of the resistance R1, the capacitor C4
The 1 pin connection of one end, the 3rd pin of the integrated circuit U2, the connector P2；The 3rd pin of the light-coupled isolation US1
It is connect respectively with the base stage of the first end of the resistance R3, the triode Q1；The second end of the resistance R1 respectively with it is described
The 3 pins connection of the collector of triode Q1, the connector P2；The second end of the resistance R3 respectively with the triode
The emitter of Q1, Q4,4 pins of the connector P2, the second end of the capacitor C4-C5, the integrated circuit U2 the 1st pipe
Foot connection；2 pins of the connector P2 are connect by the resistance R8 with the base stage of the triode Q4；The triode Q4
Collector connect respectively with the second end of the second end of the resistance R6, the capacitor C6；The 2nd of the light-coupled isolation US2
Pin is connect with the first end of the first end of the resistance R6, the capacitor C6 respectively；The 1st pin of the light-coupled isolation US2
It is connect respectively with the 2nd pin of the first end of the capacitor C5, the integrated circuit U2；The 3rd pin of the light-coupled isolation US2
It is connect respectively with the base stage of the first end of the resistance R7, the triode Q3.
Preferred technical solution, the connector P1 is as input interface；The connector P2 is as output interface.
The model of preferred technical solution, the integrated circuit U1-U2 is LN6206-1.5V.
The model of preferred technical solution, the light-coupled isolation US1-US2 is EL1018.
Preferred technical solution, the triode Q1-Q4 is NPN type triode.
Preferred technical solution, the model of the triode Q1-Q4 are S8050 or SOT23.
Beneficial effect compared with the existing technology is that using the above scheme, the utility model is using conventional low cost low speed
It can be realized the communication of 115200 high bit rates in the case where optocoupler, reduced production cost, improve communication efficiency；It can be real
The conversion of any level, keeps user more convenient in terms of level conversion between existing DC1.8-5V；High isolation pressure resistance is used
Wide pin pitch optocoupler is isolated high pressure resistant.
Detailed description of the invention
Illustrate embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment or the prior art
The required attached drawing used is briefly described in description, it is clear that, the accompanying drawings in the following description is only the one of utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of light-coupled isolation serial communication device circuit schematic diagram of the utility model.
Specific embodiment
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to this
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ",
For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement
Mark.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
As shown in Figure 1, one embodiment of the utility model is:
A kind of light-coupled isolation serial communication device, including resistance R1-R8, capacitor C1-C6, triode Q1-Q4, connector
P1-P2, light-coupled isolation US1-US2 and integrated circuit U 1-U2；The 1st stitch of the connector P1 is respectively with the resistance R5's
First end, the first end of the capacitor C1, the 3rd pin of the integrated circuit U1, the light-coupled isolation US2 the 4th pin connect
It connects；The 2nd stitch of the connector P1 is connect with the collector of the second end of the resistance R5, the triode Q3 respectively；Institute
The 3rd stitch for stating connector P1 is connect by the resistance R4 with the base stage of the triode Q2；The 4th needle of the connector P1
Foot respectively with the second end of the resistance R7, the second end of the capacitor C1-C2, the triode Q2-Q3 emitter, described
The 1st pin of integrated circuit U1 connects；The 2nd pin of the integrated circuit U1 respectively with the first end of the capacitor C2, described
The 1st pin of light-coupled isolation US1 connects；The 2nd pin of the light-coupled isolation US1 respectively with the first end of the resistance R2, institute
State the first end connection of capacitor C3；The collector of the triode Q2 respectively with the second end of the resistance R2, the capacitor C3
Second end connection；The 4th pin of the light-coupled isolation US1 respectively with the first end of the resistance R1, the capacitor C4
The 1 pin connection of one end, the 3rd pin of the integrated circuit U2, the connector P2；The 3rd pin of the light-coupled isolation US1
It is connect respectively with the base stage of the first end of the resistance R3, the triode Q1；The second end of the resistance R1 respectively with it is described
The 3 pins connection of the collector of triode Q1, the connector P2；The second end of the resistance R3 respectively with the triode
The emitter of Q1, Q4,4 pins of the connector P2, the second end of the capacitor C4-C5, the integrated circuit U2 the 1st pipe
Foot connection；2 pins of the connector P2 are connect by the resistance R8 with the base stage of the triode Q4；The triode Q4
Collector connect respectively with the second end of the second end of the resistance R6, the capacitor C6；The 2nd of the light-coupled isolation US2
Pin is connect with the first end of the first end of the resistance R6, the capacitor C6 respectively；The 1st pin of the light-coupled isolation US2
It is connect respectively with the 2nd pin of the first end of the capacitor C5, the integrated circuit U2；The 3rd pin of the light-coupled isolation US2
It is connect respectively with the base stage of the first end of the resistance R7, the triode Q3.
Preferred technical solution, the connector P1 is as input interface；The connector P2 is as output interface.
The model of preferred technical solution, the integrated circuit U1-U2 is LN6206-1.5V.
The model of preferred technical solution, the light-coupled isolation US1-US2 is EL1018.
Preferred technical solution, the triode Q1-Q4 is NPN type triode.
Preferred technical solution, the model of the triode Q1-Q4 are S8050 or SOT23.
The application is namely based on, and triode in optocoupler can not be saturated and be designed, and triode can be always in such optocoupler
In the linear range, communication speed is relatively faster for work.
Due to the clamper of output stage triode Vbe, optocoupler output triode is can not to be all saturated forever, but in order to allow
Triode operation is in the better operating point of performance, so further stablizing the work electricity that optocoupler inputs light emitting diode by LDO
Stream thereby realizes the performance of 1.8V-5V full level optimum performance.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations all should belong to the protection model of the appended claims for the utility model
It encloses.
Claims (6)
1. a kind of light-coupled isolation serial communication device, which is characterized in that including resistance R1-R8, capacitor C1-C6, triode Q1-
Q4, connector P1-P2, light-coupled isolation US1-US2 and integrated circuit U 1-U2；The 1st stitch of the connector P1 respectively with it is described
The first end of resistance R5, the first end of the capacitor C1, the 3rd pin of the integrated circuit U1, the light-coupled isolation US2
The connection of 4 pins；The 2nd stitch of the connector P1 collector with the second end of the resistance R5, the triode Q3 respectively
Connection；The 3rd stitch of the connector P1 is connect by the resistance R4 with the base stage of the triode Q2；The connector P1
The transmitting with the second end of the resistance R7, the second end, the triode Q2-Q3 of the capacitor C1-C2 respectively of the 4th stitch
The 1st pin connection of pole, the integrated circuit U1；The 2nd pin of the integrated circuit U1 respectively with the capacitor C2 first
The 1st pin connection at end, the light-coupled isolation US1；The 2nd pin of the light-coupled isolation US1 respectively with the resistance R2
The first end connection of one end, the capacitor C3；The collector of the triode Q2 respectively with the second end of the resistance R2, described
The second end of capacitor C3 connects；The 4th pin of the light-coupled isolation US1 respectively with the first end of the resistance R1, the capacitor
The 1 pin connection of the first end of C4, the 3rd pin of the integrated circuit U2, the connector P2；The light-coupled isolation US1's
3rd pin is connect with the base stage of the first end of the resistance R3, the triode Q1 respectively；The second end of the resistance R1 is distinguished
It is connect with 3 pins of the collector of the triode Q1, the connector P2；The second end of the resistance R3 is respectively with described three
The emitter of pole pipe Q1, Q4,4 pins of the connector P2, the second end of the capacitor C4-C5, the integrated circuit U2
The connection of 1st pin；2 pins of the connector P2 are connect by the resistance R8 with the base stage of the triode Q4；Described three
The collector of pole pipe Q4 is connect with the second end of the second end of the resistance R6, the capacitor C6 respectively；The light-coupled isolation US2
The 2nd pin connect respectively with the first end of the first end of the resistance R6, the capacitor C6；The 1st of the light-coupled isolation US2
Pin is connect with the 2nd pin of the first end of the capacitor C5, the integrated circuit U2 respectively；The 3rd of the light-coupled isolation US2
Pin is connect with the base stage of the first end of the resistance R7, the triode Q3 respectively.
2. a kind of light-coupled isolation serial communication device according to claim 1, which is characterized in that the connector P1 conduct
Input interface；The connector P2 is as output interface.
3. a kind of light-coupled isolation serial communication device according to claim 1, which is characterized in that the integrated circuit U1-
The model of U2 is LN6206-1.5V.
4. a kind of light-coupled isolation serial communication device according to claim 1, which is characterized in that the light-coupled isolation US1-
The model of US2 is EL1018.
5. a kind of light-coupled isolation serial communication device according to claim 1, which is characterized in that the triode Q1-Q4
It is NPN type triode.
6. a kind of light-coupled isolation serial communication device according to claim 1 or 5, which is characterized in that the triode Q1-
The model of Q4 is S8050 or SOT23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049410.3U CN209201050U (en) | 2019-01-12 | 2019-01-12 | A kind of light-coupled isolation serial communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049410.3U CN209201050U (en) | 2019-01-12 | 2019-01-12 | A kind of light-coupled isolation serial communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209201050U true CN209201050U (en) | 2019-08-02 |
Family
ID=67431229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920049410.3U Expired - Fee Related CN209201050U (en) | 2019-01-12 | 2019-01-12 | A kind of light-coupled isolation serial communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209201050U (en) |
-
2019
- 2019-01-12 CN CN201920049410.3U patent/CN209201050U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 Termination date: 20210112 |