CN208094733U - A kind of more optical port convergent type CAN fibre optic modems - Google Patents
A kind of more optical port convergent type CAN fibre optic modems Download PDFInfo
- Publication number
- CN208094733U CN208094733U CN201820684681.1U CN201820684681U CN208094733U CN 208094733 U CN208094733 U CN 208094733U CN 201820684681 U CN201820684681 U CN 201820684681U CN 208094733 U CN208094733 U CN 208094733U
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- optical
- modem
- fibre
- interface
- fibre optic
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Abstract
A kind of more optical port convergent type CAN fibre optic modems, belong to optical transmission system technical field, including modem shell, modem chip, one group of fibre-optical splice, one CAN connector and power connection, the modem chip is arranged in modem enclosure, one group of fibre-optical splice, one CAN connector and power connection are arranged on modem shell, the modem chip is equipped with optical fiber interface and CAN interface, the fibre-optical splice is connected to by optical patchcord on optical fiber interface, the CAN connectors are connected to by data line on CAN interface, the power connection is electrically connected with modem chip.The multiple optical fiber interfaces of the utility model are arranged on same shell, and the optical signal of multiple optical fiber interfaces is controlled by same industrial personal computer, and the usage amount of cable is drastically reduced, and circuit is easy to arrange, and Joint's falling off probability reduces；Industrial personal computer becomes setting one from original more of setting, and maintenance cost straight line reduces.
Description
Technical field
The utility model belongs to optical transmission system technical field, and in particular, to a kind of more optical port convergent type CAN optical fiber tune
Modulator-demodulator.
Background technology
The feature that fiber-optic signal is small with its transmission loss, signal errors is small is widely used, however optical signal can not
Directly by electronics industrial control equipment institute Direct Recognition, it is therefore desirable to by optical signal demodulation at electric signal；Likewise, what industrial personal computer was assigned
Instruction be also required to transmit in a fiber after being modulated into optical signal, signal is modulated and demodulate need use modulation /demodulation
The electric signal interface majority of device, modem uses CAN interface, and versatility is good, and structure is also simple, traditional modulation /demodulation
Device adds 1 power port using 1 road optical fiber, i.e. each CAN interface can only be modulated demodulation to the signal of optical fiber all the way, if having more
Platform CAN fibre optic modems can only be installed not using one-to-one mode in use, can not be managed concentratedly at the heart in systems
Convenient, occupied space is big；And each equipment will be to the wiring simultaneously of two interfaces, so cable is more and complicated, day
It often safeguards highly difficult；And connector is more, the probability that falls off can also increase, and failure rate is obviously improved.
Utility model content
Purpose of utility model：The purpose of this utility model is to provide a kind of more optical port convergent type CAN fibre optic modems,
It solves in multi-channel optical fibre interface, more CAN fibre optic modems in use, can not be managed concentratedly at the heart in systems, only
It can be using one-to-one, installation inconvenience, the big problem of occupied space；Simultaneously prevent each equipment of CAN power ports will wiring, increase
Add the probability that falls off, execute-in-place inconvenient.
Technical solution：The utility model provides a kind of more optical port convergent type CAN fibre optic modems, including modulatedemodulate
Adjust device shell, modem chip, one group of fibre-optical splice, a CAN connector and power connection, the modem chip setting
In modem enclosure, one group of fibre-optical splice, a CAN connector and power connection are arranged at modem
On shell, the modem chip is equipped with optical fiber interface and CAN interface, and the fibre-optical splice is connected to by optical patchcord
On optical fiber interface, the CAN connectors are connected to by data line on CAN interface, the power connection and modem chip electricity
Property connection.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the modem chip includes that light connects
Circuit and optical transmission circuit are received, the optical receiving circuit includes that the first XOR gate, the first nor gate, the second XOR gate and third are different
Or door, the optical transmission circuit include the second nor gate, third nor gate, the 4th XOR gate and four nor gate.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the third XOR gate and second or non-
Interconnecting piece is equipped between door, the interconnecting piece includes the first resistor and diode of parallel connection, and interconnecting piece further includes and first
The capacitance of resistance and Diode series.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the optical fiber interface include one group of photoelectricity
Conversion module, the photoelectric conversion module and the one-to-one setting of fibre-optical splice.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the CAN interface include one group of CAN total
Line interface transceiver controller, the CANH pins and CANL pins difference on one group of CAN interface transceiver controller are mutual
It is connected to after connection on CAN connectors.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the fibre-optical splice refer to equipped with one group
Show that lamp, the indicator light are electrically connected with modem chip.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, fibre-optical splice setting 4-6.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the CAN interface transmitting-receiving control
Device is PCA82C250.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the modem shell are equipped with
Label location for paste.
Further, above-mentioned more optical port convergent type CAN fibre optic modems, the modem shell are rectangular
Body structure, the power connection are arranged on the top plate of modem shell, and the label location for paste is arranged in modulation /demodulation
On the side wall of device shell, and fibre-optical splice and CAN connectors are arranged in the modulation /demodulation adjacent with side wall where label location for paste
On the side wall of device shell.
Above-mentioned technical proposal can be seen that the utility model and have the advantages that：Mostly light described in the utility model
Mouth convergent type CAN fibre optic modems, simple and reasonable for structure, easy to use, application cost is low, and adaptability is good, will be multiple
Optical fiber interface is arranged on same shell, and the optical signal of multiple optical fiber interfaces is controlled by same industrial personal computer, cable
Usage amount is drastically reduced, and circuit is easy to arrange, and Joint's falling off probability reduces；Industrial personal computer becomes setting one from original more of setting
Platform, maintenance cost straight line reduce, and setting indicator light can intuitively monitor the communication conditions of each interface, debug in time.It protects
My modem operation is demonstrate,proved, there is very high promotional value.
Description of the drawings
Fig. 1 is the structural schematic diagram of more optical port convergent type CAN fibre optic modems described in the utility model；
Fig. 2 is the circuit diagram of modem chip described in the utility model；
Fig. 3 is the circuit diagram of optical fiber interface described in the utility model；
Fig. 4 is the circuit diagram of CAN interface described in the utility model；
Fig. 5 is the right view of more optical port convergent type CAN fibre optic modems described in the utility model；
Fig. 6 is the front view of more optical port convergent type CAN fibre optic modems described in the utility model；
Fig. 7 is the vertical view of more optical port convergent type CAN fibre optic modems described in the utility model；
Structural schematic diagram when Fig. 8 is more optical port convergent type CAN fibre optic modems applications described in the utility model.
In figure：1 modem shell, 11 label locations for paste, 2 modem chips, 21 optical receiving circuits, 211 first
XOR gate, 212 first nor gates, 213 second XOR gates, 214 third XOR gates, 22 optical transmission circuits, 221 second nor gates,
222 third nor gates, 223 the 4th XOR gates, 224 four nor gates, 23 first resistors, 24 diodes, 25 capacitances, 3 optical fiber connect
Head, 31,4CAN connectors, 5 power connections, 6 optical fiber interfaces, 61 photoelectric conversion modules, 7CAN interfaces, the transmitting-receiving of 71CAN bus interface
Controller.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
Describe the utility model and simplify to describe, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " multiple "
It is two or more, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features are in direct contact, and can also not be to be in direct contact but lead to including the first and second features
Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Indicate that fisrt feature level height is less than second feature.
Embodiment
More optical port convergent type CAN fibre optic modems as shown in Fig. 1,5,6 and 7, including modem shell 1,
2, one groups of the modem chip CAN connectors 4 of fibre-optical splice 3, one and power connection 5, the setting of the modem chip 2 are being adjusted
Inside modulator-demodulator shell 1, one group of fibre-optical splice, 3, CAN connectors 4 and power connection 5 are arranged at modem
On shell 1, the modem chip 2 is equipped with one group of optical fiber interface 6 and CAN interface 7, and the fibre-optical splice 3 passes through optical fiber
Wire jumper is connected on optical fiber interface 6, and the CAN connectors 4 are connected to by data line on CAN interface 7, the power connection 5 with
Modem chip 2 is electrically connected.The fibre-optical splice 3 is equipped with one group of indicator light 31, the indicator light 31 and modulation /demodulation
Chip 2 is electrically connected.Optimal fibre-optical splice 3 is arranged 4-6.Modem shell 1 is equipped with label location for paste 11, is used for
The parameters such as product type, power supply are pasted, the size of label location for paste is about the 1/5 of front panel size, and label location for paste is arranged
In the centre position of 1 one of side wall of modem shell.Modem shell 1 is rectangular parallelepiped structure, the power supply
Connector 5 is arranged on the top plate of modem shell 1, and the label location for paste 11 is arranged in the side of modem shell 1
On wall, and fibre-optical splice 3 and CAN connectors 4 are arranged in the modem shell 1 adjacent with 11 place side wall of label location for paste
Side wall on.All fibre-optical splices 3 are equidistantly uniformly arranged on modem shell described in the utility model 1, in optical fiber
The upper left corner setting CAN connectors 4 of 6 position of interface, each fibre-optical splice 3 is equipped with several indicator lights 31 to illustrate this
Power connection 5 is arranged to access power supply in the use state of connector on the top plate of modem shell 1.
In addition, modem chip 2 as shown in Figure 2 includes optical receiving circuit 21 and optical transmission circuit 22, the light connects
It includes the first XOR gate 211, the first nor gate 212, the second XOR gate 213 and third XOR gate 214, the light hair to receive circuit 21
Power transmission road 22 includes the second nor gate 221, third nor gate 222, the 4th XOR gate 223 and four nor gate 224.Third exclusive or
Interconnecting piece is equipped between door 214 and the second nor gate 221, the interconnecting piece includes the first resistor 23 and diode 24 of parallel connection,
And interconnecting piece further includes and 24 concatenated capacitance 25 of first resistor 23 and diode.Wherein, 21 part first of optical receiving circuit
The input terminal of XOR gate 211 receives optical signal, the input terminal of the first nor gate 212 output end with the first XOR gate 211 respectively
It is connected with optical signal, the output end of the first nor gate 212 is respectively connected to the input terminal and third XOR gate of the second XOR gate 213
The output end of 214 input terminal, 213 output signal of the second XOR gate, third XOR gate 214 passes through in parallel first of interconnecting piece
Resistance 23 and diode 24 are connect with the input terminal of the second nor gate 221, another input terminal of the second nor gate 221 receives electricity
Signal, two input terminals of the output end connection third nor gate 222 of the second nor gate 221, the output end of third nor gate 222
It is connected to the input terminal of the 4th XOR gate 223, the 4th XOR gate 223 is connected to two input terminals of four nor gate 224.And
And the power input of first XOR gate 211, the second XOR gate 213 and the 4th XOR gate 223 is terminated with resistance.
Again, optical fiber interface 6 as shown in Figure 3 includes one group of photoelectric conversion module 61,61 He of the photoelectric conversion module
3 one-to-one setting of fibre-optical splice.CAN interface 7 as shown in Figure 4 include one group of CAN interface transceiver controller 71, described one
CANH pins and CANL pins on group CAN interface transceiver controller 71 are connected to CAN connectors 4 after being mutually coupled respectively
On.CAN interface transceiver controller 71 is PCA82C250.Modem chip 2 is the core of the application, is being modulated
Optical fiber interface 6 is set on demodulation chip and CAN interface 7, optical fiber interface 6 are electrically connected the optical fiber on panel with CAN interface 7 and connect
First 3 and CAN connectors 4, several optical fiber interfaces 6 can be set on modem chip 2, each optical fiber interface 6 connects an optical fiber
Connector 3, the signal that then all optical fiber interfaces 6 receive are transmitted to CAN interface 7 after ovennodulation, by being connect with CAN interface 7
CAN connectors 4 export.
The application modem shell 1 includes a frame, and metallic plate is arranged on six faces of frame by frame
It is coated, specifically, metallic plate is divided into top plate, forward and backward side plate and left and right side plate, top plate and bottom plate and a left side in the application,
Right plate is fixedly installed with frame, and inserting groove, the forward and backward side plate setting is arranged in the edge of bottom plate and left and right side plate
The protruding portion in inserting groove is can be inserted into, specifically, the forward and backward side plate can be fixed in a manner of pull on frame.Institute
It states and is provided with screw hole at four angles of top plate, fixed top plate by the way that screw is arranged.One holder is set in frame, it is described
Modem chip is installed on holder, to ensure that chip will not damage, extends the service life of the utility model.
Polylith chip can also be arranged in the utility model, an optical fiber interface is arranged on every chip piece, after ovennodulation
Electric signal be uniformly accessed on a CAN interface, be arranged so easy to repair, can targetedly replace the part of damage.
It is corresponding, in the shell one holder with multiple card slots of setting by each chip fix in position, per two panels chip it
Between have at least gap of 3cm, ensure that chip have good heat dissipation
In addition, being schematic diagram when this more optical port convergent type CAN fibre optic modem uses as shown in Figure 8.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvement can also be made, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (10)
1. a kind of more optical port convergent type CAN fibre optic modems, it is characterised in that：Including modem shell（1）, modulation
Demodulation chip（2）, one group of fibre-optical splice（3）, a CAN connector（4）And power connection（5）, the modem chip（2）If
It sets in modem shell（1）Inside, one group of fibre-optical splice（3）, a CAN connector（4）And power connection（5）It is all provided with
It sets in modem shell（1）On, the modem chip（2）It is equipped with optical fiber interface（6）And CAN interface（7）, described
Fibre-optical splice（3）It is connected to optical fiber interface by optical patchcord（6）On, the CAN connectors（4）It is connected to CAN by data line
Interface（7）On, the power connection（5）With modem chip（2）It is electrically connected.
2. more optical port convergent type CAN fibre optic modems according to claim 1, it is characterised in that：The modulatedemodulate
Aligning piece（2）Including optical receiving circuit（21）And optical transmission circuit（22）, the optical receiving circuit（21）Including the first XOR gate
（211）, the first nor gate（212）, the second XOR gate（213）With third XOR gate（214）, the optical transmission circuit（22）Including
Second nor gate（221）, third nor gate（222）, the 4th XOR gate（223）With four nor gate（224）.
3. more optical port convergent type CAN fibre optic modems according to claim 2, it is characterised in that：The third is different
Or door（214）With the second nor gate（221）Between be equipped with interconnecting piece, the interconnecting piece includes in parallel first resistor（23）With two
Pole pipe（24）, and interconnecting piece further includes and first resistor（23）And diode（24）Concatenated capacitance（25）.
4. more optical port convergent type CAN fibre optic modems according to claim 3, it is characterised in that：The optical fiber connects
Mouthful（6）Including one group of photoelectric conversion module（61）, the photoelectric conversion module（61）And fibre-optical splice（3）One-to-one setting.
5. more optical port convergent type CAN fibre optic modems according to claim 4, it is characterised in that：The CAN interface
（7）Including one group of CAN interface transceiver controller（71）, one group of CAN interface transceiver controller（71）On
CANH pins and CANL pins are connected to CAN connectors after being mutually coupled respectively（4）On.
6. more optical port convergent type CAN fibre optic modems according to claim 1, it is characterised in that：The optical fiber connects
Head（3）It is equipped with one group of indicator light（31）, the indicator light（31）With modem chip（2）It is electrically connected.
7. more optical port convergent type CAN fibre optic modems according to claim 1, it is characterised in that：The optical fiber connects
Head（3）It is arranged 4-6.
8. more optical port convergent type CAN fibre optic modems according to claim 5, it is characterised in that：The CAN bus
Interface transceiver controller（71）For PCA82C250.
9. more optical port convergent type CAN fibre optic modems according to claim 1, it is characterised in that：The modulatedemodulate
Adjust device shell（1）It is equipped with label location for paste（11）.
10. more optical port convergent type CAN fibre optic modems according to claim 9, it is characterised in that：The modulatedemodulate
Adjust device shell（1）For rectangular parallelepiped structure, the power connection（5）It is arranged in modem shell（1）Top plate on, the mark
Sign location for paste（11）It is arranged in modem shell（1）Side wall on, and fibre-optical splice（3）With CAN connectors（4）Setting exists
With label location for paste（11）The adjacent modem shell of place side wall（1）Side wall on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820684681.1U CN208094733U (en) | 2018-05-09 | 2018-05-09 | A kind of more optical port convergent type CAN fibre optic modems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820684681.1U CN208094733U (en) | 2018-05-09 | 2018-05-09 | A kind of more optical port convergent type CAN fibre optic modems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208094733U true CN208094733U (en) | 2018-11-13 |
Family
ID=64053066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820684681.1U Expired - Fee Related CN208094733U (en) | 2018-05-09 | 2018-05-09 | A kind of more optical port convergent type CAN fibre optic modems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208094733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072023A (en) * | 2019-03-30 | 2019-07-30 | 岳西县天鹅电子科技有限公司 | A kind of modem of installation easy to disassemble |
-
2018
- 2018-05-09 CN CN201820684681.1U patent/CN208094733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072023A (en) * | 2019-03-30 | 2019-07-30 | 岳西县天鹅电子科技有限公司 | A kind of modem of installation easy to disassemble |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |