CN206575451U - Highly reliable industrial ethernet switch - Google Patents

Abstract

Highly reliable industrial ethernet switch disclosed in the utility model, including power detecting module super capacitor, alarm prompt module and DCDC translation circuits, wherein, the input of power detecting module and super capacitor is all connected with the input of externally fed, the output end connection power detecting module of super capacitor, the first output end connection DCDC translation circuits of voltage measurement module.Super capacitor is arranged in super capacitor mounting groove and inserts installation pedestal, is plug type.Also include alarm prompt module, for occurring alarm prompt when interchanger breaks down or power down, voltage are incorrect.By the highly reliable industrial ethernet switch, make field exchange machine can also normal work in power down, it is ensured that the proper communication of the field apparatus of connection, improve field exchange machine reliability of operation.

Description

Highly reliable industrial ethernet switch

Technical field

The utility model belongs to EPA communication technical field, and in particular to a kind of EPA on-scene communication Change planes.

Background technology

Existing high reliability Ethernet switch is all that the master-slave back-up formula installed by frame (is installed i.e. in frame Many interchangers, and the model configuration of interchanger is just the same, is arranged to master-slave back-up pattern, one is broken down wherein When, another works on without influenceing network service), but master-slave back-up formula interchanger is all only suitable for the work under building environment Make.And the interchanger of mount type at the scene, do not possess master-slave back-up ability.

The interchanger of field-installable, because not having master-slave back-up ability, in the case of power down, interchanger will stop work Make, cause all ethernet devices being connected through to go offline, have a strong impact on communication, the work of field apparatus, bring serious Directly, indirect consequence.Meanwhile, because existing switch is with transparent pattern in the communication system for not possessing Simple Network Management Protocol In the presence of after its power down, in apparatus monitor system, the equipment that can only see its connection goes offline, it is not known that concrete reason, causes The trouble hunting cycle is long.

Utility model content

To solve the above problems, the utility model discloses a kind of highly reliable industrial ethernet switch, pass through the standby of installation Used cooperatively with super capacitor and power detecting module, make field exchange machine can also normal work in power down, it is ensured that connection The proper communication of field apparatus, improves field exchange machine reliability of operation.

Highly reliable industrial ethernet switch disclosed in the utility model, including power detecting module super capacitor, announcement Alert reminding module and DCDC translation circuits, wherein, the input of power detecting module and super capacitor is all connected with externally fed Input, super capacitor output end connection power detecting module, voltage measurement module the first output end connection DCDC become Change circuit.

Further, super capacitor is arranged in super capacitor mounting groove and inserts installation pedestal, is plug type.

Further, power detecting module can be judged using voltage comparator or AD sample circuits.

Further, voltage comparator has voltage detection unit and voltage comparison unit, for detecting the presence or absence of voltage With the size of comparison voltage.

Further, industrial ethernet switch also includes alarm prompt module, and the input of alarm prompt module is connected Second output end of voltage measurement module, is carried for occurring alarm when interchanger breaks down or power down, voltage are incorrect Show.

Further, alarm prompt module includes alarm indicator, when interchanger break down or power down, voltage not just Flashed in a certain way when really.

Further, alarm prompt module includes buzzer, when interchanger breaks down or power down, voltage are incorrect Carry out sound production prompt.

Further, alarm prompt module also has run indicator and/or link light, wherein, run indicator Whether for prompt system in normal work, link light has been used to indicate whether data in interaction.

Further, alarm module is to be based on snmp protocol, is less than warning line in switch monitors to power supply voltage Afterwards, power fail warning is sent by the general error 2 superior admin hosts of code of snmp protocol.

Further, alarm module periodically can also report mesh by the special error code 6 of snmp protocol to admin host The voltage condition of preceding super capacitor.

Further, industrial ethernet switch also includes network interface, for the connecting communication with outside network device.

Highly reliable industrial ethernet switch disclosed in the utility model has the advantage that as follows：

(1) by the use of power detecting module and standby super capacitor, in the case of unexpected power down, field exchange Machine can also maintain the normal work of a period of time, can guarantee that the proper communication of the field apparatus of connection, be overhaul of the equipments, safeguard and strive The time has been taken, field exchange machine reliability of operation is improved.

(2) ultracapacitor may be designed as plug type, so can be charged in advance before equipment installation, straight during installation Patch and used into equipment, power down protection is opened immediately, the charging without waiting ultracapacitor；For not needing power down to protect Shield, user can also select not buy, to save cost, using flexible.

(3) because ultracapacitor is non-maintaining, in life period of equipment, it is not necessary to special maintenance.

(4) possess the prompting of local alarm lamp, by flash red warning light or buzzer, attendant can be reminded, and When fix a breakdown, recover power supply for exchange.

(5) alerted based on long-range snmp protocol, interchanger is after power down is detected, and interchanger passes through general, standardization , the Simple Network Management Protocol supported extensively (SNMP) electricity of warning information and current super capacitor is sent to admin host Pressure situation, remote prompting system maintenance personnel take necessary measure, also estimate the duration that field exchange machine can work on, from And remote alarm and feedback are realized, maintenance efficiency is improved, applicability is also wider.

Brief description of the drawings

Fig. 1：The circuit block diagram of highly reliable industrial ethernet switch

Fig. 2：Voltage detecting and comparison circuit circuit diagram

Fig. 3：Super capacitor installs signal

Fig. 4：Interchanger schematic diagram with super capacitor mounting groove

Embodiment

As shown in figure 1, the highly reliable industrial ethernet switch in embodiment includes：Power detecting module (voltage detecting With comparison circuit), alarm prompt module, DCDC translation circuits and the super capacitor in super capacitor mounting groove, electricity The input of source detection module and super capacitor is all connected with externally fed input, and the output end of super capacitor also connects voltage survey Measure module, the output end of power detecting module first connection DCDC translation circuits, the second output end connection alarm prompt module.

Its working method is：Externally fed enters after interchanger, first passes around voltage measurement module, while to super electricity Capacity charge, is detected through voltage measurement module, if voltage meets job requirement, controlling transistor conducting so that interchanger is obtained Power input.When externally fed disconnects, it is responsible for from super capacitor to power supply for exchange, needs also exist for first passing through power detecting mould Block, turns on transistor for power supply for exchange if meeting job requirement.If power detecting module detects that voltage does not meet friendship Change planes job requirement, transistor shut-off, interchanger is in off working state, meanwhile, alarm prompt module triggering work is accused Alert prompting.Wherein, alarm prompt module can carry out flash for prompting using alarm indicator, can also use buzzer sound production prompt, Or both combine.

Physical circuit figure as shown in Figure 2, accesses one group of super capacitor and electricity on the power supply circuit of Ethernet switch Source detection module, wherein, voltage comparator mode, including voltage detection unit and electricity are used in power detecting module the present embodiment Comparing unit is pressed, its circuit mainly includes the components such as operational amplifier, capacitance resistance ware, transistor.

It is noted that power supply voltage less than warning line judgment mode it is not unique, can use as voltage ratio compared with The modes such as device, AD sampling judgements are carried out.AD samplings judge that relative cost is higher, and power detecting module uses this in embodiment Plant voltage comparator mode.

DCDC translation circuits (DC dc converter) be used for by externally fed voltage (typically using 24V, anti-interference good meeting Some) direct current is converted into the corresponding supply voltage of inside chip, and the power supply of such as inside chip is generally 5V, 3.3V, 1.0V.

Indicated as shown in figure 3, the highly reliable industrial ethernet switch in embodiment also includes run indicator, link Lamp, alarm indicator, network interface and super capacitor mounting groove, wherein, whether run indicator is used for prompt system just Often work, link light has been used to indicate whether data in interaction；Alarm indicator be used for when interchanger break down or Power down, voltage flash in a certain way when incorrect；Network interface is the communication interface that outside network device is connected to interchanger, For standard interface；Super capacitor mounting groove is used to install super capacitor, and its inner contact and interchanger 24V power supply circuits are in parallel, As super capacitor charge circuit during normal work, super capacitor discharge loop is used as during outside power down.

Fig. 3 is shown with 3 warning lights, can carry out flash for prompting, such as power supply power-fail, electricity to following several situations according to demand Hold power down, power supply under-voltage, electric capacity under-voltage, interchanger faults itself etc..

Super capacitor is designed using plug type, and its size is determined with pressure-resistant selection as the duration required for power down protection It is fixed.In interchanger normal work, super capacitor is charged by system power supply circuit.Full piezoelectric voltage is maintained, works as outside During power failure, discharged by super capacitor.Meanwhile, power detecting carries out electric power detection with comparison circuit, if meeting confession Electricity is required, then is powered into dcdc converter to exchanger circuit, and such as undesirable, then warning light is alerted in a certain way. The plug type super capacitor of use, can be changed easily.Friendship need not be dismantled when super capacitor damage or system maintenance Change planes entirety, and only need to carry out plug for super capacitor.

As shown in figure 4, change when only need to along super capacitor mounting groove insert installation pedestal or from installation pedestal along Super capacitor mounting groove is extracted.Certainly, user also super capacitor can be fixed using other manner as needed and Connection.By the design of super capacitor, when power supply for exchange voltage is less than warning line, it is powered by super capacitor, it is ensured that For a period of time, during this period, the communication of all equipment connected by the interchanger can be kept not the energy normal work of interchanger Become, the time is provided for plant maintenance, maintenance.

Further, the interchanger with super capacitor mounting groove can also include being based on long-range Simple Network Management Protocol The alarm module of (snmp protocol), for the communication with remote administrator.In switch monitors to power supply voltage less than police Guard against after line, the flash red warning light that can be carried in interchanger reminds attendant.Now, interchanger passes through snmp protocol General error code 2 (implication is disconnecting) superior admin hosts send power fail warning, meanwhile, interchanger can also pass through Voltage feelings from the special error code 6 (implication is enterprise-specific) of snmp protocol to the current super capacitor of admin host's regular reporting Condition, i.e. distal end is prompted to by the CPU of the interchanger dump energies for periodically sending super capacitor, personnel estimate for system maintenance Meter exchanges the duration that function works on, and simplifies maintenance.

Certainly, it is such as logical if if interchanger does not possess Simple Network Management Protocol, signal can also be transmitted otherwise Cross red warning light to flash with different frequency, the different failure of correspondence, to help Field Force quick and precisely to position failure.

Although embodiment of the present utility model is described above in association with accompanying drawing, the utility model does not limit to In above-mentioned specific embodiments and applications field, above-mentioned specific embodiment be only it is schematical, guiding, without It is restricted.One of ordinary skill in the art is not departing from the utility model claim under the enlightenment of this specification In the case of the scope protected, the form of many kinds can also be made, these belong to the row of the utility model protection.

Claims (10)

1. a kind of highly reliable industrial ethernet switch, it is characterised in that including power detecting module, super capacitor and DCDC translation circuits, wherein, the input of power detecting module and super capacitor is all connected with the input of externally fed, super electricity The output end connection power detecting module of appearance, the first output end connection DCDC translation circuits of voltage measurement module.

2. industrial ethernet switch as claimed in claim 1, it is characterised in that the super capacitor is arranged in super capacitor Mounting groove is interior and inserts installation pedestal, is plug type.

3. industrial ethernet switch as claimed in claim 1, it is characterised in that the power detecting module can use voltage Comparator or AD sample circuits are judged.

4. industrial ethernet switch as claimed in claim 3, it is characterised in that the voltage comparator has voltage detecting Unit and voltage comparison unit, the size for detecting the presence or absence of voltage and comparison voltage.

5. industrial ethernet switch as claimed in claim 1, it is characterised in that also including alarm prompt module, alarm is carried Show that the input of module connects the second output end of voltage measurement module, for being broken down or power down, voltage when interchanger Alarm prompt occurs when incorrect.

6. industrial ethernet switch as claimed in claim 5, it is characterised in that the alarm prompt module refers to including alarm Show lamp, flashed in a certain way when interchanger breaks down or power down, voltage are incorrect.

7. industrial ethernet switch as claimed in claim 5, it is characterised in that the alarm prompt module includes buzzing Device, sound production prompt is carried out when interchanger breaks down or power down, voltage are incorrect.

8. industrial ethernet switch as claimed in claim 5, it is characterised in that the alarm module is based on SNMP associations View, after switch monitors to power supply voltage are less than warning line, is managed by general error 2 superiors of code of snmp protocol Member's main frame sends power fail warning.

9. industrial ethernet switch as claimed in claim 8, it is characterised in that the alarm module can also be assisted by SNMP The special error code 6 of view periodically reports the voltage condition of current super capacitor to admin host.

10. industrial ethernet switch as claimed in claim 5, it is characterised in that the alarm prompt module also has fortune Row indicator lamp and/or link light, wherein, whether run indicator is used for prompt system in normal work, link light It has been used to indicate whether data in interaction.