CN206283521U - Isolation RS 485 hub - Google Patents
Isolation RS 485 hub Download PDFInfo
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- CN206283521U CN206283521U CN201621401378.3U CN201621401378U CN206283521U CN 206283521 U CN206283521 U CN 206283521U CN 201621401378 U CN201621401378 U CN 201621401378U CN 206283521 U CN206283521 U CN 206283521U
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- isolation
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- direction control
- hub
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Abstract
The utility model discloses a kind of isolation RS 485 hub.It includes data mixing circuit, first direction control module, second direction control module, power interface, 485 main website interfaces and multiple 485 interfaces.The utility model supports 485 main websites and the slave station of four tunnel 485 all the way, also mutually isolated between all of RS485 ports per mutually isolated between road RS485 interfaces and power supply, substantially increases safety in utilization.
Description
Technical field
The utility model belongs to motor control technology field, more particularly to a kind of isolation RS 485 hub.
Background technology
RS485 hubs are a kind of RS485 repeaters of integrated form, and it not only has amplifies signal, improves bus driver
Ability, while it provide the user integrated routing function, makes field wiring neat.When building network by RS485 hubs,
Communicated by multiple RS485 equipment in parallel on the internal bus of RS485 hubs.The equipment of existing RS485 hubs
Between 485 power supplys it is compatible poor, there are problems that common-mode voltage, equipment room power supply will cause equipment or user to be controlled altogether
The circuit that device inside processed is connected with signaling interface is damaged.
Utility model content
Goal of the invention of the present utility model is：In order to solve problem above present in prior art, the utility model is carried
A kind of isolation RS 485 hub is gone out.
The technical solution of the utility model is：A kind of isolation RS 485 hub, including data mixing circuit, first direction
Control module, second direction control module, power interface, 485 main website interfaces and multiple 485 interfaces；
The data mixing circuit sends data to the one 485 transmission circuit and the second second direction control module respectively；
The first direction control module is connected with multiple data signal isolation circuits respectively；
The second direction control module is to the one 485 transmission circuit sending direction control signal；
The power interface passes sequentially through 5V lowering and stabilizing blood pressures module and a 5V isolates DC-DC power module to the 1st
Transmission circuit is powered；The 5V lowering and stabilizing blood pressures module is isolated DC-DC power module and is received to the multiple 2nd 485 by the 2nd 5V of multiple
Power Generation Road is powered；The first 5V isolation DC-DC power module is also powered to the data mixing circuit；
485 main website interface is connected with the one 485 transmission circuit；One 485 transmission circuit is to first direction control
Molding block sends data, and receives the number that the direction control signal and data hybrid circuit of the transmission of second direction control module send
According to；
485 interface connects one to one with multiple 2nd 485 transmission circuits respectively；2nd 485 transmission circuit
Enter row data communication with multiple data signal isolation circuits respectively, and receive the side that multiple data signal isolation circuits send respectively
To control signal；The high-speed digital signal isolation circuit is connected with the data mixing circuit.
Further, 485 interface is 4.
Further, it is additionally provided between the power interface and 5V lowering and stabilizing blood pressure modules anti-reverse electric with overcurrent protection
Road.
Further, the 5V lowering and stabilizing blood pressures module uses LM5007 switching power source chips.
Further, the 5V isolation DC-DC power modules and the 2nd 5V isolation DC-DC power module are used
B0505S-1W power modules.
Further, the one 485 transmission circuit and the 2nd 485 transmission circuit receive and dispatch IC using MAX485.
Further, the data signal isolation circuit uses ADUM2301 magnetic every IC.
Further, the data mixing circuit uses multichannel and gate circuit.
Further, the first direction control module and second direction control module use triode.
The utility model has the advantages that：
(1) supply voltage 9V-60V is supported；
(2) 485 main websites and the slave station of four tunnel 485 all the way are supported；
(3) all isolate between per road 485, and between 485 and power supply；
(4) whole interfaces use ESD protection, are suitable for the site environment of complexity.
Brief description of the drawings
Fig. 1 is isolation RS 485 hub architecture schematic diagram of the present utility model.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model, is not used to limit the utility model.
As shown in figure 1, being isolation RS 485 hub architecture schematic diagram of the present utility model.A kind of isolation RS 485 line concentration
Device, including data mixing circuit, first direction control module, second direction control module, power interface, 485 main website interfaces and
Multiple 485 interfaces；
Data mixing circuit of the present utility model is sent out to the one 485 transmission circuit and the second second direction control module respectively
Send data；First direction control module is connected with multiple data signal isolation circuits respectively；Second direction control module is to first
485 transmission circuit sending direction control signals；Here first direction control module and second direction control module uses three
Control of the pole pipe realization reverse to data level to 485 direction pins.
Power interface of the present utility model pass sequentially through 5V lowering and stabilizing blood pressures module and a 5V isolation DC-DC power module to
One 485 transmission circuit is powered；The 5V lowering and stabilizing blood pressures module isolates DC-DC power module to multiple the by 2nd 5V of multiple
2 485 transmission circuits are powered；The first 5V isolation DC-DC power module is also powered to the data mixing circuit；Here
5V lowering and stabilizing blood pressures module carries out being depressured to 5V voltages using switching power source chip, specifically such as LM5007 etc.；Here a 5V
Isolation DC-DC power module and the 2nd 5V isolation DC-DC power modules use B0505S-1W power modules.
485 main website of the present utility model interface is connected with the one 485 transmission circuit；One 485 transmission circuit is to
One direction controlling module sends data, and receives the direction control signal and data hybrid circuit of the transmission of second direction control module
The data of transmission.
485 interface of the present utility model connects one to one with multiple 2nd 485 transmission circuits respectively；Described 2nd 485
Transmission circuit enters row data communication with multiple data signal isolation circuits respectively, and receives multiple data signal isolation circuits respectively
The direction control signal of transmission；The high-speed digital signal isolation circuit is connected with the data mixing circuit.Here
One 485 transmission circuits and the 2nd 485 transmission circuit are received and dispatched IC and are realized using 485, specifically such as MAX485 etc.；Here high speed
The data transfer of data signal isolation circuit uses magnetic to be realized every IC, specifically such as ADUM2301 etc., and direction controlling is using common
Optocoupler is realized；Here data mixing circuit is realized using multichannel with door.
To cause the circuit that equipment or customer controller inside are connected with signaling interface altogether to solve equipment room power supply
Damage, it is of the present utility model per between road RS485 interfaces and power supply it is mutually isolated, between all of RS485 ports also mutually every
From so as to substantially increase the safety in utilization of isolation RS 485 hub of the present utility model.
In order to strengthen the adaptability of isolation RS 485 hub of the present utility model, 485 interface of the present utility model is set to
4, so as to support 485 main websites and the slave station of four tunnel 485 all the way.
In order to further increase the security of isolation RS 485 hub of the present utility model, power supply of the present utility model connects
Anti-reverse and current foldback circuit is additionally provided between mouth and 5V lowering and stabilizing blood pressure modules.Here anti-reverse and current foldback circuit
Anti-reverse protection is carried out using diode, overcurrent protection is carried out using resettable fuse.
The utility model not only realize it is all mutually isolated between 485 concentrator functions, but also Shi Mei roads 485, so as to solve
485 port problems are burnt in equipment common-battery source of the certainly common mode disturbances problem, and solution without isolation using 485 communications when ground wire is released,
Meanwhile, communication baud rate remains to reach 115200bps.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this reality
With new principle, it should be understood that protection domain of the present utility model is not limited to such especially statement and embodiment.
One of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this practicality
New substantive other various specific deformations and combination, these deformations and combination are still in protection domain of the present utility model.
Claims (9)
1. a kind of isolation RS 485 hub, it is characterised in that including data mixing circuit, first direction control module, second party
To control module, power interface, 485 main website interfaces and multiple 485 interfaces；
The data mixing circuit sends data to the one 485 transmission circuit and the second second direction control module respectively；
The first direction control module is connected with multiple data signal isolation circuits respectively；
The second direction control module is to the one 485 transmission circuit sending direction control signal；
The power interface passes sequentially through 5V lowering and stabilizing blood pressures module and 5V isolation DC-DC power modules to the one 485 transmitting-receiving
Circuit is powered；The 5V lowering and stabilizing blood pressures module isolates DC-DC power module to multiple 2nd 485 transmitting-receiving electricity by the 2nd 5V of multiple
Road powers；The first 5V isolation DC-DC power module is also powered to the data mixing circuit；
485 main website interface is connected with the one 485 transmission circuit；One 485 transmission circuit controls mould to first direction
Block sends data, and receives the data that the direction control signal and data hybrid circuit of the transmission of second direction control module send；
485 interface connects one to one with multiple 2nd 485 transmission circuits respectively；The 2nd 485 transmission circuit difference
Enter row data communication with multiple data signal isolation circuits, and receive the direction control that multiple data signal isolation circuits send respectively
Signal processed；The data signal isolation circuit is connected with the data mixing circuit.
2. isolation RS 485 hub as claimed in claim 1, it is characterised in that 485 interface is 4.
3. isolation RS 485 hub as claimed in claim 2, it is characterised in that the power interface and 5V lowering and stabilizing blood pressure moulds
Anti-reverse and current foldback circuit is additionally provided between block.
4. isolation RS 485 hub as claimed in claim 3, it is characterised in that the 5V lowering and stabilizing blood pressures module is used
LM5007 switching power source chips.
5. isolation RS 485 hub as claimed in claim 4 a, it is characterised in that 5V isolates DC-DC power module
B0505S-1W power modules are used with the 2nd 5V isolation DC-DC power modules.
6. isolation RS 485 hub as claimed in claim 5, it is characterised in that the one 485 transmission circuit and second
485 transmission circuits receive and dispatch IC using MAX485.
7. isolation RS 485 hub as claimed in claim 6, it is characterised in that the data signal isolation circuit is used
ADUM2301 magnetic is every IC.
8. isolation RS 485 hub as claimed in claim 7, it is characterised in that the data mixing circuit using multichannel with
Gate circuit.
9. isolation RS 485 hub as claimed in claim 8, it is characterised in that the first direction control module and second
Direction controlling module uses triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621401378.3U CN206283521U (en) | 2016-12-20 | 2016-12-20 | Isolation RS 485 hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621401378.3U CN206283521U (en) | 2016-12-20 | 2016-12-20 | Isolation RS 485 hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206283521U true CN206283521U (en) | 2017-06-27 |
Family
ID=59073065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621401378.3U Active CN206283521U (en) | 2016-12-20 | 2016-12-20 | Isolation RS 485 hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206283521U (en) |
-
2016
- 2016-12-20 CN CN201621401378.3U patent/CN206283521U/en active Active
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