CN207200723U - A kind of intelligent RS485 hubs - Google Patents
A kind of intelligent RS485 hubs Download PDFInfo
- Publication number
- CN207200723U CN207200723U CN201720493293.0U CN201720493293U CN207200723U CN 207200723 U CN207200723 U CN 207200723U CN 201720493293 U CN201720493293 U CN 201720493293U CN 207200723 U CN207200723 U CN 207200723U
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- casing
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- interfaces
- hubs
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Abstract
The utility model belongs to communication line connection equipment technical field, more particularly to a kind of intelligent RS485 hubs, including casing, the surface of the casing is provided with RS485 input interfaces, the RS485 input interfaces are connected with fault detection unit, the fault detection unit is connected with master cpu and multiple RS485 output modules, the RS485 output modules include Fault Isolation unit, EMC circuit units, carrying out surge protection unit, power subsystem, RS485 output interfaces, the RS485 output interfaces are arranged at the surface of casing, the RS485 input interfaces outside RS485 output interfaces with being cased with protective cover, the protective cover is hinged with casing.The utility model ensure that the stabilization of signal transmission, each RS485 output interface can access substantial amounts of node, have significant Practical significance by setting special protection and power supply unit in per RS485 output modules all the way.
Description
Technical field
The utility model belongs to communication line connection equipment technical field, and in particular to a kind of intelligent RS485 hubs.
Background technology
RS485 buses have obtained widely as a kind of convenient and reliable bus in fields such as centralized automatic meter-reading, Industry Controls
Using.Because all devices are articulated in same bus, when one of equipment breaks down, RS485 can be caused total
Line is unavailable, other equipment also can not proper communication, while when bus locking equipment is more, often can not fast positioning therefore
Hinder equipment, it is necessary to spend substantial amounts of manpower to be investigated.
Many RS485 hubs are simply simply isolated using passive devices such as resistance to bus at present, when some
When equipment breaks down, good isolated fault is tended not to, simultaneously because not possessing fault location function, it is also necessary to spend people
Power carries out the positioning investigation of failure.
Therefore need to optimize improvement to the structure of RS485 hubs.As number of patent application is：
CN201420250489.3, it is entitled《RS485 hubs》Patent document in, disclose a kind of RS485 hubs, including case
Body and the circuit board being arranged in casing；Binding post is arranged on circuit board by dislocation arrangement mode, and indicator lamp is arranged at electricity
It is connected on the plate of road with binding post；On casing threading hole and binding band are provided with positive pair of wire connection terminals.The utility model uses
The binding post being arranged at by dislocation arrangement mode on circuit board, is easy to the connection of multiple binding posts, by being arranged at circuit
The indicator lamp being connected on plate with binding post shows whether external connection apparatus connects correctly；Simultaneously by being set on circuit board
Bus isolation and protection circuit module, bus lightning protection circuit module and fault monitoring circuit module；So that acquisition terminal
Data wire has isolation and defencive function, and the communication line of certain electric energy meter is short-circuit or open circuit does not influence adopting for other electric energy meters
Collection, avoid in the future change table, tear open table work in caused by wiring issue is on system influence.But although the program strengthens
Safeguard function, but can not protect not by ectocine at wiring, while design relatively simple, the stability of performance can not protect
Barrier.
Utility model content
It is simple in order to solve general RS485 concentrator functions, lack protection isolation features, it is more difficult to it is determined that the line to break down
The problem of road, the utility model provide a kind of intelligent RS485 hubs.
A kind of intelligent RS485 hubs, including casing, the surface of the casing is provided with RS485 input interfaces, described
RS485 input interfaces are connected with fault detection unit, and the fault detection unit is connected with master cpu and exported with multiple RS485
Module, the RS485 output modules include Fault Isolation unit, EMC circuit units, carrying out surge protection unit, power subsystem,
RS485 output interfaces, the RS485 output interfaces are arranged at the surface of casing, and the RS485 input interfaces export with RS485
Protective cover is cased with outside interface, the protective cover is hinged with casing.
Further, the RS485 output modules are respectively connected with communication indicator lamp, malfunction indicator lamp.
Further, described its quantity of RS485 output modules is less than 32.
Further, the Fault Isolation unit is provided with analog switch chip.
Further, the carrying out surge protection unit includes gas-discharge tube, resistance, two poles of voltage switch type transient state suppression
Pipe.
Further, power interface is provided with the casing, the power interface is located in the protective cover.
Further, it is provided with power supply indicator on the casing.
The utility model has the advantage of：
1st, independent protection and power supply unit are provided with per output all the way, it is highly reliable.
2nd, can automatism isolation break down circuit.
3rd, indicator lamp is mounted on per output all the way, can intuitively quickly determines trouble point, convenient maintenance.
4th, interface is provided with protective cover, can completely cut off external environment influence.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the one of embodiment of the utility model；
Fig. 2 is the carrying out surge protection element circuit structure chart of the one of embodiment of the utility model；
Accompanying drawing identifies：
1- casings, 2-RS485 input interfaces, 3- fault detection units, 4- master cpus, 5-RS485 output modules, 51- events
Hinder isolated location, 52-EMC circuit units, 53- carrying out surge protection units, 54- power subsystems, 6-RS485 output interfaces, 7- guarantors
Shield, 8- communication indicator lamps, 9- malfunction indicator lamp, 10- power interfaces, 11- power supply indicators.
Embodiment
It is simple in order to solve general RS485 concentrator functions, lack protection isolation features, it is more difficult to it is determined that the line to break down
The problem of road, the utility model provide a kind of intelligent RS485 hubs.
Make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, clear, complete description is carried out to the technical scheme in the embodiment of the utility model, it is clear that described
Embodiment be one of embodiment of the present utility model, rather than whole embodiment.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art obtain under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
A kind of intelligent RS485 hubs as depicted in figs. 1 and 2, including casing 1, the surface of the casing 1 are provided with
RS485 input interfaces 2, the RS485 input interfaces 2 are connected with fault detection unit 3, and the fault detection unit 3 is preferably
MAX14891E four-way error protection RS-485/RS-422 receivers, fault detection unit 3 are connected with master cpu 4 and four
RS485 output modules 5, the RS485 output modules 5 include Fault Isolation unit 51, EMC circuit units 52, carrying out surge protection list
Member 53, power subsystem 54, RS485 output interfaces 6, the RS485 output interfaces 6 are arranged at the surface of casing 1, the RS485
For input interface 2 with being cased with protective cover 7 outside RS485 output interfaces 6, the protective cover 7 is be hinged with casing 1.In use, work as master control
When CPU4 receives the fault-signal of fault detection unit 3, master cpu 4 is according to location of fault, the RS485 that will be broken down
The circuitry cuts of output module 5, after trouble shooting, the road will be exported and accessed by master cpu 4 automatically, it is not necessary to which user's is dry
In advance.
Further, the RS485 output modules 5 are respectively connected with communication indicator lamp 8, malfunction indicator lamp 9.Signal designation
The working condition of corresponding line is prompted the sparkling of lamp 8, after master cpu 4 receives fault-signal, can light corresponding failure
Indicator lamp 9, facilitates staff to overhaul.
Further, the Fault Isolation unit 51 is provided with analog switch chip.Pass through analog switch chip, master control
CPU4 can cut off the circuit of failure in time automatically, realize the function of automatism isolation.
Further, the carrying out surge protection unit 53 includes gas-discharge tube GDT, resistance R, the suppression of voltage switch type transient state
Diode TSS.Accompanying drawing provides the concrete structure of carrying out surge protection unit 53, by carrying out surge protection unit 53, can effectively prevent thunder
Current fluctuation situation is hit to impact the normal work of the present embodiment.
Further, power interface 10 is provided with the casing 1, the power interface 10 is located in the protective cover 7.
Protective cover 7 can protection power source interface 10 avoid the external interference factor such as water droplet, ensure equipment working stability.
Further, it is provided with power supply indicator 11 on the casing 1.By power supply indicator 11, can intuitively check
The working condition of the present embodiment.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations, i.e., it is all to make equivalent changes and modifications according to the application scope,
All should still it belong in the utility model covering scope.
Claims (7)
1. a kind of intelligent RS485 hubs, including casing, it is characterised in that the surface of the casing is provided with RS485 inputs and connect
Mouthful, the RS485 input interfaces are connected with fault detection unit, the fault detection unit be connected with master cpu with it is multiple
RS485 output modules, the RS485 output modules include Fault Isolation unit, EMC circuit units, carrying out surge protection unit, power supply
Unit, RS485 output interfaces, the RS485 output interfaces are arranged at the surface of casing, the RS485 input interfaces and RS485
Protective cover is cased with outside output interface, the protective cover is hinged with casing.
2. a kind of intelligent RS485 hubs according to claim 1, it is characterised in that the RS485 output modules connect
It is connected to communication indicator lamp, malfunction indicator lamp.
A kind of 3. intelligent RS485 hubs according to claim 1, it is characterised in that its number of the RS485 output modules
Measure as less than 32.
4. a kind of intelligent RS485 hubs according to claim 1, it is characterised in that the Fault Isolation unit is set
There is analog switch chip.
5. a kind of intelligent RS485 hubs according to claim 1, it is characterised in that the carrying out surge protection unit includes
Gas-discharge tube, resistance, voltage switch type Transient Suppression Diode.
6. a kind of intelligent RS485 hubs according to claim 1, it is characterised in that be provided with power supply on the casing
Interface, the power interface are located in the protective cover.
7. a kind of intelligent RS485 hubs according to claim 1, it is characterised in that be provided with power supply on the casing
Indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493293.0U CN207200723U (en) | 2017-05-05 | 2017-05-05 | A kind of intelligent RS485 hubs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493293.0U CN207200723U (en) | 2017-05-05 | 2017-05-05 | A kind of intelligent RS485 hubs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200723U true CN207200723U (en) | 2018-04-06 |
Family
ID=61793176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720493293.0U Active CN207200723U (en) | 2017-05-05 | 2017-05-05 | A kind of intelligent RS485 hubs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736927A (en) * | 2019-10-15 | 2020-01-31 | 博能传动(苏州)有限公司 | permanent magnet synchronous motor initial magnetic pole position identification and broken line detection method |
-
2017
- 2017-05-05 CN CN201720493293.0U patent/CN207200723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736927A (en) * | 2019-10-15 | 2020-01-31 | 博能传动(苏州)有限公司 | permanent magnet synchronous motor initial magnetic pole position identification and broken line detection method |
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