CN207051796U - Graphic display device of fire control room - Google Patents

Abstract

The utility model discloses graphic display device of fire control room, including housing and the integrated computer being arranged in housing, the integrated computer be provided with communication interface card be used for realize then include USB module, central processing arithmetic element module with the communication of fire protection linkage control device, the communication interface card, isolate communication interface module and state indicator module；Combined using touch computer all-in-one with private casing, eliminate the connection of external equipment such as main frame, display, mouse, keyboard, reduce the space-consuming of device, overall appearance is generous, the communication interface card of independent design is installed, message transmission capability and stability are lifted, increases extended capability, makes device overall all more superior than current similar-type products in outward appearance and performance.

Description

Graphic display device of fire control room

Technical field

It the utility model is related to fire-fighting control field, and in particular to graphic display device of fire control room.

Background technology

Background of related of the present utility model is illustrated below, but these explanations might not form this practicality newly The prior art of type.

Fire control system be it is a kind of linkage starts various fire-fighting equipments after confirming that fire occurs, alarmed with to reach and Stamp out a fire the system and device of effect；And graphic display device of fire control room is then applied among fire control system, due to The limitation of screen size, processing speed and the simple operation of fire alarm control unit itself etc., therefore in fire protection control room In need to aid in display alarm information using graphics device.

Nowadays, graphic display device of fire control room is using normal domestic use computer, and the main frame of normal domestic use computer It is separation with display, the overall space-consuming of device is excessive, and interface protection ability is also limited；Though but use industrial PC Drawbacks described above can be so avoided, but it is expensive, and cost performance is too low.

And with fire protection linkage control device communication aspects, normal domestic use computer and industrial PC using directly use The RS-232 serial communication modes carried, the communication mode use Transistor-Transistor Logic level, are easily damaged interface chip, and communication distance Only there was only 50 meters far, transmission speed is also only 20Kbps, and antijamming capability is too low, and only single station access capability, and function can Autgmentability is also poor.

Utility model content

The purpose of this utility model is to provide graphic display device of fire control room, is arranged in fire control system, makes The installation of device overall structure is simple, superior performance and cost-effective；And it is additionally provided with communication interface card and is used for anti-interference energy Power and autgmentability, ensure that communication interface plate possesses powerful performance and the transmission of stable signal.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions：Fire protection control room figure shows Device, including housing and the integrated computer that is arranged in housing, the integrated computer are provided with communication interface card and are used for Realize with the communication of fire protection linkage control device, the communication interface card include USB module, central processing arithmetic element module, every From communication interface module and state indicator module；

USB module, including USB power supply modules and USB communication module；The USB communication module is arranged at central processing fortune Calculate and be used for the transmission communication for realizing data between unit module and integrated computer, the USB power supply modules are also disposed on center Handle between arithmetic element module and integrated computer, for the Power convert of integrated computer to be supplied into central processing computing Unit module, isolation communication interface module and state indicator module；

Central processing arithmetic element module, USB module, isolation communication interface module and state indicator module are connected respectively； Judged, analyzed and handled with receive information for detecting, realize the synchronizing information with fire protection linkage control device, teletransmission Information and the function of receiving remote inquiry；

Isolate communication interface module, be arranged between central processing arithmetic element module and fire protection linkage control device, use CAN interface mode and RS485 interfaces realize the synchronous communication between central processing arithmetic element module and fire protection linkage control device, And it is provided with isolation filter protection；

State indicator module, it is connected to carry out state instruction with central processing arithmetic element module.

Preferably, the USB power supply modules include change-over circuit and low dropout voltage regulator；The change-over circuit includes USB connectors, single output DC/DC power modules, the 3rd Transient Suppression Diode, the first electric capacity and the second electric capacity；The USB connects First pin of interface connects VCC power supplys with the second pin of single output DC/DC power modules, and the 4th of the USB connectors the First pin of pin and single output DC/DC power modules meets GND；The second pin and three-prong of the USB connectors connect It is connected to USB communication module；First pin of the USB connectors is also associated with the negative pole of the 3rd Transient Suppression Diode, described The negative pole of 3rd Transient Suppression Diode is also associated with one end of the first electric capacity, the positive pole of the 3rd Transient Suppression Diode and The other end of first electric capacity is all grounded；The three-prong of single output DC/DC power modules connect one end of the second electric capacity and Zero potential GNE is also associated with, the 4th pin of single output DC/DC power modules connects the other end of the second electric capacity and also connected It is connected to VCC1 power supplys.

Preferably, the low dropout voltage regulator includes voltage stabilizing chip, the first pin connection connection of the voltage stabilizing chip There is one end of the 3rd electric capacity, one end of the 3rd electric capacity is also associated with VCC power supplys and is used to input, and the second of the voltage stabilizing chip Pin connects GND, one end of the three-prong connection first resistor of the voltage stabilizing chip, the other end connection of the first resistor VCC power supplys, the 4th pin of the voltage stabilizing chip connect one end of the 4th electric capacity, the other end ground connection of the 4th electric capacity, institute The 5th pin for stating voltage stabilizing chip connects one end of the 5th electric capacity, the other end ground connection of the 5th electric capacity, the 5th electric capacity One end connection V3.3 power supplys be used to export.

Preferably, the central processing arithmetic element module uses model STM32101RCT6 32 based on ARM Microcontroller, there are 51 programmable I/O mouths, Program Flash Memory 256KB, RAMsize32K.

Preferably, the isolation communication interface module includes at least one CAN communication interface circuit and at least one RS485 interface circuits, and isolation filter protection circuit.

Preferably, the CAN communication interface circuit includes CAN controller chip, the first crystal oscillator, second resistance, the 6th electricity Resistance, the 7th resistance, the 8th resistance and the first light emitting diode；The first to six pin of the CAN controller chip, the 16th Central processing arithmetic element module, the CAN controller core are connected to 17 pins, the 23rd to the 28th pin Seven, the 14 pins of piece are then hanging, the CAN controller chip the eight, the 15,21 pins all meet GND, it is described CAN controller chip the 12nd, 18,22 pins be connected with each other and be connected to one end of the 6th electric capacity, the described 6th One end of electric capacity is also connected with VCC power supplys, and the other end of the 6th electric capacity is then grounded, the 9th pipe of the CAN controller chip One end of pin the first crystal oscillator of connection, the other end of the tenth pin the first crystal oscillator of connection of the CAN controller chip, described first One end of crystal oscillator is also connected with one end of the 7th electric capacity, and the other end of first crystal oscillator then connects one end of the 8th electric capacity, described The other end of 7th electric capacity and the 8th electric capacity is all grounded；The 11st pin connection VCC power supplys of the CAN controller chip, institute One end of the tenth three-prong connection second resistance of CAN controller chip is stated, the other end of the second resistance is also connected with first The negative pole of light emitting diode, the positive pole of first light emitting diode then connect VCC power supplys；The of the CAN controller chip 13,19 and 20 pins are connected to CAN communication interface.

Preferably, the CAN communication interface circuit also includes interface chip, the first pin connection of the interface chip Tenth three-prong of CAN controller chip, the 19th pipe of the 4th pin connection CAN controller chip of the interface chip Pin, the 20th pin of the 5th pin connection CAN controller chip of the interface chip；Second pin of the interface chip Then connect the other end of 3rd resistor, one end of the 8th pin connection 3rd resistor of the interface chip, the 3rd resistor The other end ground connection；The three-prong of the interface chip connects one end of the 9th electric capacity, another termination of the 9th electric capacity Ground, one end of the 9th electric capacity are also connected with VCC power supplys, and the 6th pin of the interface chip connects the first transient state and suppresses two poles The negative pole of pipe, the 7th pin of the interface chip connect the negative pole of the second Transient Suppression Diode, and first transient state suppresses The positive pole of diode and the second Transient Suppression Diode is all grounded, and the negative pole of first Transient Suppression Diode is also connected with the 4th The other end of resistance, the negative pole of second Transient Suppression Diode are also connected with one end of the 4th resistance, the 4th resistance One end connects one end of the 5th resistance, and the other end of the 4th resistance connects the other end of the 5th resistance, the 5th resistance One end be also connected with the first end at wire jumper end, the 5th resistance（R5）The other end be also connected with second end at wire jumper end.

Preferably, first Transient Suppression Diode and the second Transient Suppression Diode combine to form protection circuit, often Individual CAN communication interface is both provided with a protection circuit.

Preferably, the isolation filter protection circuit includes five optical coupling isolation circuits；Including the first optocoupler, second Optocoupler, the 3rd optocoupler, the 4th optocoupler, the 5th optocoupler, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, 11st resistance, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance；First pin of the 5th optocoupler One end of the 14th resistance is connected, the other end connection VCC1 power supplys of the 14th resistance, the second of the 5th optocoupler draws Pin is connected to RS485 interface circuits, and the 3rd pin of the 5th optocoupler connects GND, the 4th pin connection of the 5th optocoupler One end of 15th resistance, another termination VCC power supplys of the 15th resistance, one end of the 15th resistance are additionally coupled to USB isolation input end；First pin of the 4th optocoupler connects one end of the 12nd resistance, the 12nd resistance it is another One end connects VCC power supplys, and the second pin of the 4th optocoupler is connected to central processing arithmetic element module, the 4th optocoupler The 3rd pin connection zero potential GNE, the 4th pin of the 4th optocoupler connects one end of the 13rd resistance, the described 13rd Another termination VCC1 power supplys of resistance, one end of the 13rd resistance are also connected with RS485 interfaces；The first of 3rd optocoupler Pin connects one end of the tenth resistance, and the other end connection VCC1 power supplys of the tenth resistance, the second of the 3rd optocoupler draws Pin connects RS485 isolation input end, and the 3rd pin of the 3rd optocoupler meets GND, and the 4th pin of the 3rd optocoupler connects One end of the 11st resistance, another termination VCC power supplys of the 11st resistance are connect, one end of the 11st resistance is also connected with To central processing arithmetic element module；First pin of second optocoupler connects one end of the 9th resistance, the 9th resistance The other end connection VCC power supplys, second optocoupler second pin connection central processing arithmetic element module, second light The 3rd pin connection zero potential GNE of coupling, the 4th pin of second optocoupler connect one end of the 8th resistance, the 8th electricity The other end connection VCC1 power supplys of resistance, one end of the 8th resistance is also connected with RS485 interface circuits；The of first optocoupler One pin connects one end of the 7th resistance, another termination VCC power supplys of the 7th resistance, the second pin of first optocoupler Connect central processing arithmetic element module, the 3rd pin connection zero potential GNE of first optocoupler, the of first optocoupler Four pins connect one end of the 6th resistance, and another termination VCC1 power supplys of the 6th resistance, one end of the 6th resistance is also Connect RS485 interface circuits.

Preferably, the state indicator module includes some dual-colored LED indicator lamps, and its series resistance is directly and central processing Arithmetic element module connects.

The utility model includes housing and the integrated computer being arranged in housing, and the integrated computer is provided with logical Communication interface card is used to realize the communication with fire protection linkage control device, and the communication interface card then includes USB module, central processing is transported Calculate unit module, isolation communication interface module and state indicator module；Combined, exempted from private casing using touch computer all-in-one Except the connection of external equipment such as main frame, display, mouse, keyboard, the space-consuming of device is reduced, overall appearance is generous, The communication interface card of independent design is installed, lifts message transmission capability and stability, increases extended capability, makes device overall outside See and performance is all more superior than current similar-type products.

Compared with prior art, it is of the present utility model to be beneficial in that：1）Using setting touch computer one in housing Machine, other accessories are reduced, reduce the space-consuming of device, save cost；2）Communication interface card is total by RS485 and CAN scenes Line communicates, and is protected with reference to electrical isolation, improves anti-electromagnetic interference capability；3）Communication robust and communication distance are improved, and is accessed Information capacity is big；4）Modular functionality extension can be provided；5）Ensured by two mu balanced circuits and five optical coupling isolation circuits logical The stability and feature of communication interface card signal transmission；6）Improve anti-common mode disturbances ability and anti-noise jamming ability；7）Improve Communication transfer ability, and there is automatic error detection mechanism, ensure the stabilization of data transfer, moreover it is possible to the CAN nodes of automatism isolation error.

Brief description of the drawings

By that will become and the specific embodiment part provided, feature and advantage of the present utility model referring to the drawings It is easier to understand, in the accompanying drawings.

Fig. 1 is the module frame diagram of the communication interface card of graphic display device of fire control room of the present utility model.

Fig. 2 is the circuit diagram of the USB power supply modules of communication interface card of the present utility model.

Fig. 3 is the circuit diagram of the CAN communication interface circuit of communication interface card of the present utility model.

Fig. 4 is the circuit diagram of the isolation filter protection circuit of communication interface card of the present utility model.

Fig. 5 is the USB of communication interface card of the present utility model isolation input end.

Fig. 6 is the RS485 of communication interface card of the present utility model isolation input end.

Embodiment

Illustrative embodiments of the present utility model are described in detail with reference to the accompanying drawings；To illustrative embodiments Description merely for the sake of demonstration purpose, and be definitely not to the utility model and its application or the limitation of usage.

In present embodiment, the 5th optocoupler UP5 realizes USB isolation input end and the isolation of RS485 interface circuits；4th Optocoupler UP4 realizes the isolation of RS485 interface circuits and central processing arithmetic element module；3rd optocoupler UP3 realizes central processing The isolation at arithmetic element module and RS485 isolation input end；Second optocoupler UP2 realizes RS485 interface circuits and central processing The isolation of arithmetic element module；First optocoupler UP1 realizes the isolation of RS485 interface circuits and central processing arithmetic element module； The central processing arithmetic element module and other interface control chips pass through the 7th resistance R7, the 8th resistance R8, the 9th electricity Hinder R9, the 12nd resistance R12 and the 14th resistance R14 and form signal circuit, and realize light-coupled isolation, prevent from doing Disturb；The isolation input end of the USB is used for graphics device isolation and amplifier, and the isolation input end of the RS485 is then for user's Input.

In present embodiment, communication interface card passes through integrated computer of the USB power supply modules directly with being arranged in housing Connection, it directly uses the USB power source of computer；The USB power source of computer suppresses two poles as 5V power inputs by the 3rd transient state Pipe TVS3 and the first electric capacity C1 filtering, then respectively by single output DC/DC power modules IC1 and low dropout voltage regulator, will Input power is converted into stable DC5V and DC3.3V, and is supplied to USB module, central processing arithmetic element module, isolation logical Communication interface module and state indicator module electricity consumption.

In present embodiment, the central processing arithmetic element module is using model STM32101RCT6 based on ARM 32 8-digit microcontrollers, have 51 programmable I/O mouths, Program Flash Memory 256KB, RAMsize32K.Monolithic Each road controller information for detecting and receiving is judged, analyzed and handled by machine, realizes the letter with fire protection linkage control device Breath is synchronous, teletransmission information and the function of receiving remote inquiry.

In present embodiment, isolation communication interface module includes two CAN communication interface circuits and a RS485 interfaces electricity Road, the CAN communication interface circuit are controlled by independent CAN control chips IC3 and interface chip IC4, the RS485 interfaces electricity It route independent RS485 control chips control.

In present embodiment, each CAN communication interface circuit is both provided with including what two Transient Suppression Diodes formed Protection circuit, for protecting the safety of CAN communication interface circuit.

In present embodiment, the state indicator module includes four dual-colored LED indicator lamps, its all series resistance directly with Central processing arithmetic element module connects, for realizing the instruction of state.

In present embodiment, compared with the RS-232 communication modes of prior art, the utility model is communicated using RS-485 Interface, have the operation level of wider range, docking port chip realizes more preferable protection, and its maximum transmission rate reaches 10Mbps, it is 500 times of RS-232 speed；Also using the combination of balance driver and differential receiver, anti-common mode disturbances are improved Ability, i.e. noise immunity are good；Maximum transmission distance is up to 3 kms, and with allowing to connect much 128 receipts in bus Send out the multistation ability of device so that the interface there are more autgmentabilities.

In present embodiment, the utility model is provided with two CAN interfaces, is the main communication interface all of the present apparatus, RS-485 interfaces are even more than in terms of communication transfer ability, and are the technical grade fieldbus of international standard, real-time is high；Using more Main working method, possess the node of incalculability limitation in theory, be easy to form local networking；Message is short frame structure and has hardware CRC check, there is automatic error detection mechanism, ensure the stabilization of data transfer；The CAN nodes of automatism isolation error, do not influence bus Communication function；System architecture is simple, cost-effective.

In present embodiment, combined using touch computer all-in-one with private casing, eliminate external equipment such as main frame, show Show the connection of device, mouse, keyboard, reduce the space-consuming of device, overall appearance is generous；And the communication of independent design is installed Interface card, it directly uses computer USB power supply, possesses 2 road CAN, 1 road RS-485 information input interfaces, using 32 based on ARM 8-digit microcontroller STM32101RCT6, power supply stabilization circuit at two, five tunnel light-coupled isolations, it is powerful to ensure that communication interface plate possesses Performance and the transmission of stable signal, and message transmission capability and stability are lifted, increase extended capability, make device overall outside See and performance is all more superior than current similar-type products.

Although the utility model is described with reference to illustrative embodiments, but it is to be understood that the utility model The embodiment be described in detail and shown in text is not limited to, in the feelings without departing from claims limited range Under condition, those skilled in the art can make various changes, the scope of protection of the utility model to the illustrative embodiments It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, is improved by claims Fall into the scope of protection of the utility model.

Claims (10)

1. graphic display device of fire control room, including housing and the integrated computer that is arranged in housing, the all-in-one Computer be provided with communication interface card be used for realize and fire protection linkage control device communication, it is characterised in that：The communication interface card Including USB module, central processing arithmetic element module, isolation communication interface module and state indicator module；

USB module, including USB power supply modules and USB communication module；The USB communication module is arranged at central processing computing list It is used for the transmission communication for realizing data between element module and integrated computer, the USB power supply modules are also disposed on central processing Between arithmetic element module and integrated computer, for the Power convert of integrated computer to be supplied into central processing arithmetic element Module, isolation communication interface module and state indicator module；

Central processing arithmetic element module, USB module, isolation communication interface module and state indicator module are connected respectively；For Detection and receive information are judged, analyzed and handled, and realize the synchronizing information with fire protection linkage control device, teletransmission information With the function of receiving remote inquiry；

Isolate communication interface module, be arranged between central processing arithmetic element module and fire protection linkage control device, connect using CAN Mouth mode and RS485 interfaces realize the synchronous communication between central processing arithmetic element module and fire protection linkage control device, and It is provided with isolation filter protection；

State indicator module, it is connected to carry out state instruction with central processing arithmetic element module.

2. device according to claim 1, it is characterised in that：The USB power supply modules include change-over circuit and low voltage difference Mu balanced circuit；The change-over circuit includes USB connectors（X9）, single output DC/DC power modules（IC1）, the 3rd transient state suppress Diode（TVS3）, the first electric capacity（C1）With the second electric capacity；The USB connectors（X9）The first pin and single output DC/DC Power module（IC1）The second pin connection VCC power supplys, the USB connectors（X9）The 4th pin and single output DC/DC electricity Source module（IC1）The first pin meet GND；The USB connectors（X9）The second pin and three-prong be connected to USB communication Module；The USB connectors（X9）The first pin be also associated with the 3rd Transient Suppression Diode（TVS3）Negative pole, described Three Transient Suppression Diodes（TVS3）Negative pole be also associated with the first electric capacity（C1）One end, the 3rd Transient Suppression Diode （TVS3）Positive pole and the first electric capacity（C1）The other end be all grounded；Single output DC/DC power modules（IC1）The 3rd pipe Pin connects the second electric capacity（C2）One end and be also associated with zero potential GNE, single output DC/DC power modules（IC1） Four pins connect the second electric capacity（C2）The other end and be also associated with VCC1 power supplys.

3. device according to claim 2, it is characterised in that：The low dropout voltage regulator includes voltage stabilizing chip（IC2）, The voltage stabilizing chip（IC2）The first pin be connected with the 3rd electric capacity（C3）One end, the 3rd electric capacity（C3）One End is also associated with VCC power supplys and is used to input, the voltage stabilizing chip（IC2）The second pin connect GND, the voltage stabilizing chip（IC2） Three-prong connection first resistor（R1）One end, the first resistor（R1）The other end connection VCC power supplys, the voltage stabilizing Chip（IC2）The 4th pin connect the 4th electric capacity（C4）One end, the 4th electric capacity（C4）Other end ground connection, it is described steady Press chip（IC2）The 5th pin connect the 5th electric capacity（C5）One end, the 5th electric capacity（C5）The other end ground connection, it is described 5th electric capacity（C5）One end connection V3.3 power supplys be used to export.

4. device according to claim 3, it is characterised in that：The central processing arithmetic element module uses model STM32101RCT6 32 8-digit microcontrollers based on ARM, there are 51 programmable I/O mouths, Program Flash Memory 256KB, RAMsize32K。

5. device according to claim 4, it is characterised in that：The isolation communication interface module includes at least one CAN communication interface circuit and at least one RS485 interface circuits, and isolation filter protection circuit.

6. device according to claim 5, it is characterised in that：The CAN communication interface circuit includes CAN controller chip （IC3）, the first crystal oscillator（B1）, second resistance（R2）, the 6th resistance（R6）, the 7th resistance（R7）, the 8th resistance（R8）And the One light emitting diode（LED0）；The CAN controller chip（IC3）The the first to six pin, the 16th to 17 pins, second 13 to the 28th pins are connected to central processing arithmetic element module, the CAN controller chip（IC3）The 7th, 14 pins are then hanging, the CAN controller chip（IC3）The eight, the 15,21 pins all meet GND, the CAN controls Device chip processed（IC3）The 12nd, 18,22 pins are connected with each other and are connected to the 6th electric capacity（C6）One end, it is described 6th electric capacity（C6）One end be also connected with VCC power supplys, the 6th electric capacity（C6）The other end be then grounded, the CAN controller Chip（IC3）The 9th pin connect the first crystal oscillator（B1）One end, the CAN controller chip（IC3）The tenth pin connect Connect the first crystal oscillator（B1）The other end, first crystal oscillator（B1）One end be also connected with the 7th electric capacity（C7）One end, described One crystal oscillator（B1）The other end then connect the 8th electric capacity（C8）One end, the 7th electric capacity（C7）With the 8th electric capacity（C8）It is another One end is all grounded；The CAN controller chip（IC3）The 11st pin connection VCC power supplys, the CAN controller chip （IC3）The tenth three-prong connection second resistance（R2）One end, the second resistance（R2）The other end be also connected with the first hair Optical diode（LED0）Negative pole, first light emitting diode（LED0）Positive pole then connect VCC power supplys；The CAN controls Device chip（IC3）The pin of the 13rd, 19 and 20 be connected to CAN communication interface.

7. device according to claim 6, it is characterised in that：The CAN communication interface circuit also includes interface chip （IC4）, the interface chip（IC4）The first pin connection CAN controller chip（IC3）The tenth three-prong, the interface Chip（IC4）The 4th pin connection CAN controller chip（IC3）The 19th pin, the interface chip（IC4）The 5th Pin connects CAN controller chip（IC3）The 20th pin；The interface chip（IC4）The second pin then connect the 3rd Resistance（R3）The other end, the interface chip（IC4）The 8th pin connection 3rd resistor（R3）One end, it is described 3rd electricity Resistance（R3）The other end ground connection；The interface chip（IC4）Three-prong connect the 9th electric capacity（C9）One end, the described 9th Electric capacity（C9）The other end ground connection, the 9th electric capacity（C9）One end be also connected with VCC power supplys, the interface chip（IC4）'s 6th pin connects the first Transient Suppression Diode（TVS1）Negative pole, the interface chip（IC4）The 7th pin connection the Two Transient Suppression Diodes（TVS2）Negative pole, first Transient Suppression Diode（TVS1）With the second Transient Suppression Diode （TVS2）Positive pole be all grounded, first Transient Suppression Diode（TVS1）Negative pole be also connected with the 4th resistance（R4）It is another End, second Transient Suppression Diode（TVS2）Negative pole be also connected with the 4th resistance（R4）One end, the 4th resistance （R4）One end connect the 5th resistance（R5）One end, the 4th resistance（R4）The other end connect the 5th resistance（R5）It is another One end, the 5th resistance（R5）One end be also connected with wire jumper end（JMP1）First end, the 5th resistance（R5）It is another End is also connected with wire jumper end（JMP1）The second end.

8. device according to claim 7, it is characterised in that：First Transient Suppression Diode（TVS1）With the second wink State suppresses diode（TVS2）Combination forms protection circuit, and each CAN communication interface circuit is both provided with a protection circuit.

9. device according to claim 8, it is characterised in that：The isolation filter protection circuit includes five light-coupled isolations Circuit；Including the first optocoupler（UP1）, the second optocoupler（UP2）, the 3rd optocoupler（UP3）, the 4th optocoupler（UP4）, the 5th optocoupler （UP5）, the 6th resistance（R6）, the 7th resistance（R7）, the 8th resistance（R8）, the 9th resistance（R9）, the tenth resistance（R10）, the tenth One resistance（R11）, the 12nd resistance（R12）, the 13rd resistance（R13）, the 14th resistance（R14）, the 15th resistance（R15）； 5th optocoupler（UP5）The first pin connect the 14th resistance（R14）One end, the 14th resistance（R14）It is another One end connects VCC1 power supplys, the 5th optocoupler（UP5）Second pin be connected to RS485 interface circuits, the 5th optocoupler （UP5）The 3rd pin connect GND, the 5th optocoupler（UP5）The 4th pin connect the 15th resistance（R15）One end, institute State the 15th resistance（R15）Another termination VCC power supplys, the 15th resistance（R15）One end be additionally coupled to USB isolation Input；4th optocoupler（UP4）The first pin connect the 12nd resistance（R12）One end, the 12nd resistance （R12）The other end connection VCC power supplys, the 4th optocoupler（UP4）Second pin be connected to central processing arithmetic element mould Block, the 4th optocoupler（UP4）The 3rd pin connection zero potential GNE, the 4th optocoupler（UP4）The 4th pin connection the 13 resistance（R13）One end, the 13rd resistance（R13）Another termination VCC1 power supplys, the 13rd resistance（R13） One end be also connected with RS485 interfaces；3rd optocoupler（UP3）The first pin connect the tenth resistance（R10）One end, it is described Tenth resistance（R10）The other end connection VCC1 power supplys, the 3rd optocoupler（UP3）Second pin connection RS485 isolation Input, the 3rd optocoupler（UP3）The 3rd pin connect GND, the 3rd optocoupler（UP3）The 4th pin connection the 11st Resistance（R11）One end, the 11st resistance（R11）Another termination VCC power supplys, the 11st resistance（R11）One End is additionally coupled to central processing arithmetic element module；Second optocoupler（UP2）The first pin connect the 9th resistance（R9）'s One end, the 9th resistance（R9）The other end connection VCC power supplys, second optocoupler（UP2）Second pin connection center Handle arithmetic element module, second optocoupler（UP2）The 3rd pin connection zero potential GNE, second optocoupler（UP2）'s 4th pin connects the 8th resistance（R8）One end, the 8th resistance（R8）The other end connection VCC1 power supplys, the described 8th Resistance（R8）One end be also connected with RS485 interface circuits；First optocoupler（UP1）The first pin connect the 7th resistance（R7） One end, the 7th resistance（R7）Another termination VCC power supplys, first optocoupler（UP1）Second pin connection center Handle arithmetic element module, first optocoupler（UP1）The 3rd pin connection zero potential GNE, first optocoupler（UP1）'s 4th pin connects the 6th resistance（R6）One end, the 6th resistance（R6）Another termination VCC1 power supplys, it is described 6th electricity Resistance（R6）One end be also connected with RS485 interface circuits.

10. device according to claim 9, it is characterised in that：The state indicator module indicates including some dual-colored LEDs Lamp, its series resistance are directly connected with central processing arithmetic element module.