CN208674869U - A kind of 485 interfaces intelligence isolation lightning protection circuit module - Google Patents
A kind of 485 interfaces intelligence isolation lightning protection circuit module Download PDFInfo
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- CN208674869U CN208674869U CN201821468684.8U CN201821468684U CN208674869U CN 208674869 U CN208674869 U CN 208674869U CN 201821468684 U CN201821468684 U CN 201821468684U CN 208674869 U CN208674869 U CN 208674869U
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Abstract
Lightning protection circuit module is intelligently isolated in 485 interface of one kind involved by the utility model comprising conversion circuit, isolated power supply power supply circuit, 485 communicating circuits and lightning protection circuit is isolated in part main control chip circuit, connector interface circuit.485 interfaces intelligently isolation lightning protection circuit module is made of foregoing circuit.In use, connector interface circuit and external sensor module are connected by conducting wire, external sensor module carries out data exchange by 485 communicating circuits and part main control chip circuit.It in this data exchange process, since TVS pipe D1 has the one-way conduction pressure stabilization function of 24V, prevents the crosstalk voltage of external sensor module excessive, and punctures the components such as communication chip U4 and chip U2, chip U3；To making the utility model have the effect of that strong antijamming capability, protective capacities are strong, universal performance is good, be compared to each other with prior art similar product, the utility model also has the accuracy height of acquisition data, and circuit is simple, it is at low cost the advantages that.
Description
[technical field]
The utility model relates to a kind of 485 interfaces for industrial computer mainboard field, and lightning protection circuit module is intelligently isolated.
[background technique]
With social development in science and technology, the control of industrial products is using more and more, to industrial products stability, anti-interference energy
The requirement of power, protective capacities is also increasingly stringenter.Such as: 485 communication circuit modules, 485 communicating circuits are as a kind of anti-interference
Ability is widely used in industrial products Communication Control compared with forceful electric power road, still, since most of 485 communicating circuit in market faces
When external equipment crosstalk, anti-interference ability is poor, and protective capacities is poor, also there is 485 communication circuit modules of strong antijamming capability,
But higher cost.
[utility model content]
In view of this, using pure hardware circuit, integrated letter the technical problem to be solved by the utility model is to provide a kind of
Intelligently isolation lightning protection circuit module, the circuit module not only have the accuracy of acquisition data high to 485 interfaces of number isolation circuit,
The function of strong antijamming capability, but also there is stronger protective capacities, and circuit is simple, it is at low cost.
Above-mentioned technical problem, the technical solution used in the utility model are solved thus are as follows: a kind of 485 interfaces intelligently isolation
Lightning protection circuit module comprising conversion circuit, isolated power supply power supply is isolated in part main control chip circuit, connector interface circuit
Circuit, 485 communicating circuits and lightning protection circuit；The part main control chip circuit passes through bi-directional data with conversion circuit is isolated
It links together, the connector interface circuit and lightning protection circuit are linked together by bi-directional data, and the isolation turns
It changes circuit and is linked together with 485 communicating circuits by bi-directional data, 485 communicating circuits pass through two-way with lightning protection circuit
Data connection together, the isolated power supply power supply circuit respectively with conversion circuit is isolated and 485 communicating circuits connect.
It further limits, the part main control chip circuit includes main control chip U1, the electricity being connected on main control chip U1
Hold C2 and resistance R3, the capacitor C1 being connected on the one end resistance R3, the capacitor C2 are connected with resistance R3.
It further limits, the isolation conversion circuit includes chip U2, chip U3, the electricity being connected on mono- pin of chip U2
Hinder R8, the resistance R9 and capacitor C3 being connected in parallel on the another pin of chip U2；The resistance being connected in parallel on two pins of chip U3
R11, the resistance R10 and capacitor C4 being connected on mono- pin of chip U3.
It further limits, 485 communicating circuit includes communication chip U4, is connected on communication chip U4 pin
Resistance R1, resistance R2.
It further limits, the lightning protection circuit includes TVS pipe D1, is connected to the gas-discharge tube D2 at the both ends TVS pipe D1, even
It is connected to the resistance R4 of the one end TVS pipe D1, resistance R5, resistance R4 are connect with the resistance R5 other end；It is connected to the TVS pipe D1 other end
Resistance R6, resistance R7, the resistance R7 link together with the resistance R6 other end；TVS pipe D1 is connected to put with gas
Thermistor RT1 between fulgurite D2, thermistor RT2.
It further limits, the isolated power supply power supply circuit includes power supply chip U5, is connected to power supply chip U5 and draws
Capacitor C5 on foot, capacitor C6, the capacitor C5, capacitor C6 are in parallel with power supply chip U5；It is connected on power supply chip U5
Capacitor C7, capacitor C8, resistance R12, the capacitor C7, capacitor C8, resistance R12 is in parallel with power supply chip U5.
It further limits, the connector interface circuit includes interface end J1, the power supply being connected on interface end J1
Hold A and power end B.
The advantageous effects of the utility model: because the technical program using the part main control chip circuit be isolated turn
It changes circuit to link together by bi-directional data, the connector interface circuit and lightning protection circuit are connected to by bi-directional data
Together, the isolation conversion circuit is linked together with 485 communicating circuits by bi-directional data, 485 communicating circuits
Linked together with lightning protection circuit by bi-directional data, the isolated power supply power supply circuit respectively with conversion circuit and 485 is isolated
Communicating circuit connects, and constitutes and thunder-lightning is intelligently isolated using 485 interfaces of pure hardware circuit, integrated signal isolation circuit
Road module.In use, connector interface circuit and external sensor module are connected by conducting wire, industrial computer mainboard works on power
Afterwards, external sensor module carries out data exchange by 485 communicating circuits and part main control chip circuit.In this data exchange mistake
Cheng Zhong prevents the crosstalk voltage of external sensor module excessive since TVS pipe D1 has the one-way conduction pressure stabilization function of 24V, and
Puncture the components such as communication chip U4 and chip U2, chip U3；To make the utility model that there is strong antijamming capability, protection energy
The effect that power is strong, universal performance is good, is compared to each other with prior art similar product, and the utility model also has the standard of acquisition data
The advantages that true property is high, and circuit is simple, at low cost.
With reference to the accompanying drawings and examples, the technical solution of the utility model is described in further detail.
[Detailed description of the invention]
Fig. 1 is the frame principle figure that lightning protection circuit module is intelligently isolated in 485 interfaces in the utility model；
Fig. 2 is the schematic diagram of part main control chip circuit in the utility model；
Fig. 3 is the schematic diagram that conversion circuit is isolated in the utility model；
Fig. 4 is the schematic diagram of 485 communicating circuits in the utility model；
Fig. 5 is the schematic diagram of lightning protection circuit in the utility model；
Fig. 6 is the schematic diagram that power-supplying circuit is isolated in the utility model；
Fig. 7 is the schematic diagram of connector interface circuit in the utility model.
[specific embodiment]
In order to be clearer and more clear technical problem to be solved in the utility model, technical solution and beneficial effect, with
Under in conjunction with the accompanying drawings and embodiments, the utility model is described in further detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
It please refers to shown in Fig. 1 to Fig. 7, illustrates that lightning protection circuit module is intelligently isolated in a kind of 485 interfaces below with reference to embodiment,
It includes part main control chip circuit, and conversion circuit, isolated power supply power supply circuit, 485 communication electricity are isolated in connector interface circuit
Road and lightning protection circuit.
The part main control chip circuit includes main control chip U1, capacitor C2 and the resistance being connected on main control chip U1
R3, the capacitor C1, the capacitor C2 being connected on the one end resistance R3 and resistance R3 are in parallel.The isolation conversion circuit includes chip
U2, chip U3, the resistance R8 being connected on mono- pin of chip U2, the resistance R9, Yi Ji electricity being connected in parallel on the another pin of chip U2
Hold C3；The resistance R11 being connected in parallel on two pins of chip U3, the resistance R10 and capacitor being connected on mono- pin of chip U3
C4.485 communicating circuit includes communication chip U4, the resistance R1 being connected on communication chip U4 pin, resistance R2.
The lightning protection circuit includes TVS pipe D1, is connected to the gas-discharge tube D2 at the both ends TVS pipe D1, is connected to TVS pipe D1
The resistance R4 of one end, resistance R5, resistance R4 are connect with the resistance R5 other end；It is connected to the resistance R6 of the TVS pipe D1 other end, resistance
R7, the resistance R7 link together with the resistance R6 other end；It is connected between TVS pipe D1 and gas-discharge tube D2 hot
Quick resistance RT1, thermistor RT2.The isolated power supply power supply circuit includes power supply chip U5, is connected to power supply chip U5
Capacitor C5 on pin, capacitor C6, the capacitor C5, capacitor C6 are in parallel with power supply chip U5；It is connected to power supply chip U5
On capacitor C7, capacitor C8, resistance R12, the capacitor C7, capacitor C8, resistance R12 is in parallel with power supply chip U5.The connection
Device interface circuit includes interface end J1, the power end A and power end B being connected on interface end J1.
The part main control chip circuit with conversion circuit be isolated linked together by bi-directional data, the connector
Interface circuit and lightning protection circuit are linked together by bi-directional data, and the isolation conversion circuit passes through with 485 communicating circuits
Bi-directional data links together, and 485 communicating circuits and lightning protection circuit are linked together by bi-directional data, the isolation
Power-supplying circuit respectively with conversion circuit is isolated and 485 communicating circuits connect.
Interface end J1 is linked together by conducting wire and external sensor module in connector interface circuit, industrial computer master
After plate works on power；Signal in external sensor module is carried out by 485 communicating circuits and part main control chip circuit
Data communication exchange.In this data exchange process, TVS pipe D1 has the one-way conduction pressure stabilization function of 24V, it is therefore prevented that outside passes
The crosstalk voltage of sensor module is excessive, causes punch through the components such as communication chip U4 and chip U2, chip U3；External sensor mould
For data inside block by reaching communication chip U4 after lightning protection circuit, communication chip U4 converts data to 232 signal RX_
GLOUT carries out the UART_RX signal in signal isolation conversion circuit by chip U3 and reaches main control chip U1, main control chip U1
After inside carries out data processing, being sent by UART_TX signal, chip U2 carries out signal isolation and is converted to TX_GLOUT signal,
And communication chip U4 in 485 communicating circuits is reached, 485 communication signals are converted to by communication chip U4, then pass through lightning protection circuit
With external sensor module communication.When encountering lightning stroke, thunder and lightning enters along 485 communication signals, high when by gas-discharge tube D2
The inert gas inside thunder and lightning gas breakdown discharge tube D2 is pressed, big energy is imported into the earth along it.It is not imported into the height of the earth
Current voltage is being consumed release by thermistor RT1 and thermistor RT2.The tiny segment for being left remaining also can be by current limliting
TVS pipe D1 consumption after resistance R5 and resistance R6 resistance, in this way, 485 communication chip U4 and subsequent industrial computer mainboard,
Not will receive lightning stroke influences.
In conclusion because the technical program uses the part main control chip circuit to pass through two-way number with conversion circuit is isolated
According to linking together, the connector interface circuit and lightning protection circuit are linked together by bi-directional data, the isolation
Conversion circuit is linked together with 485 communicating circuits by bi-directional data, and 485 communicating circuits pass through double with lightning protection circuit
Together to data connection, the isolated power supply power supply circuit respectively with conversion circuit is isolated and 485 communicating circuits connect,
And it constitutes and lightning protection circuit module is intelligently isolated using 485 interfaces of pure hardware circuit, integrated signal isolation circuit.In use, even
Device interface circuit and external sensor module is connect to connect by conducting wire, after industrial computer mainboard works on power, external sensor mould
Block carries out data exchange by 485 communicating circuits and part main control chip circuit.In this data exchange process, due to TVS pipe
D1 has the one-way conduction pressure stabilization function of 24V, prevents the crosstalk voltage of external sensor module excessive, and punctures communication chip U4
With the components such as chip U2, chip U3；To make the utility model have, strong antijamming capability, protective capacities be strong, universal performance
Good effect, is compared to each other with prior art similar product, and the utility model also has the accuracy of acquisition data high, circuit letter
Singly, the advantages that at low cost.
Above by reference to the preferred embodiment of Detailed description of the invention the utility model, not thereby limit to the right of the utility model
Range.Those skilled in the art do not depart from made any modification, equivalent replacement in the scope of the utility model and essence and change
Into should all be within the interest field of the utility model.
Claims (7)
1. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces comprising part main control chip circuit, connector interface circuit,
Conversion circuit, isolated power supply power supply circuit, 485 communicating circuits and lightning protection circuit is isolated；It is characterized by: the part master
Control chip circuit with conversion circuit be isolated linked together by bi-directional data, the connector interface circuit and lightning protection circuit
It being linked together by bi-directional data, the isolation conversion circuit is linked together with 485 communicating circuits by bi-directional data,
485 communicating circuits and lightning protection circuit are linked together by bi-directional data, the isolated power supply power supply circuit respectively with
Isolation conversion circuit and 485 communicating circuits connect.
2. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: the part master
Controlling chip circuit includes main control chip U1, and the capacitor C2 and resistance R3 being connected on main control chip U1 are connected to the one end resistance R3
On capacitor C1, the capacitor C2 and resistance R3 it is in parallel.
3. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: the isolation turns
Changing circuit includes chip U2, chip U3, and the resistance R8 being connected on mono- pin of chip U2 is connected in parallel on the another pin of chip U2
Resistance R9 and capacitor C3；The resistance R11 being connected in parallel on two pins of chip U3, the resistance being connected on mono- pin of chip U3
R10 and capacitor C4.
4. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: 485 communication
Circuit includes communication chip U4, the resistance R1 being connected on communication chip U4 pin, resistance R2.
5. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: the thunder-lightning
Road includes TVS pipe D1, is connected to the gas-discharge tube D2 at the both ends TVS pipe D1, is connected to the resistance R4 of the one end TVS pipe D1, resistance
R5, resistance R4 are connect with the resistance R5 other end；Be connected to the resistance R6 of the TVS pipe D1 other end, resistance R7, the resistance R7 with
The resistance R6 other end links together；It is connected to thermistor RT1 between TVS pipe D1 and gas-discharge tube D2, temperature-sensitive electricity
Hinder RT2.
6. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: the isolation electricity
Source power supply circuit includes power supply chip U5, the capacitor C5 being connected on power supply chip U5 pin, capacitor C6, the capacitor
C5, capacitor C6 are in parallel with power supply chip U5；The capacitor C7 being connected on power supply chip U5, capacitor C8, resistance R12 are described
Capacitor C7, capacitor C8, resistance R1 are in parallel with power supply chip U5.
7. lightning protection circuit module is intelligently isolated in a kind of 485 interfaces according to claim 1, it is characterised in that: the connector
Interface circuit includes interface end J1, the power end A and power end B being connected on interface end J1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821468684.8U CN208674869U (en) | 2018-09-06 | 2018-09-06 | A kind of 485 interfaces intelligence isolation lightning protection circuit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821468684.8U CN208674869U (en) | 2018-09-06 | 2018-09-06 | A kind of 485 interfaces intelligence isolation lightning protection circuit module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208674869U true CN208674869U (en) | 2019-03-29 |
Family
ID=65842492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821468684.8U Active CN208674869U (en) | 2018-09-06 | 2018-09-06 | A kind of 485 interfaces intelligence isolation lightning protection circuit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208674869U (en) |
-
2018
- 2018-09-06 CN CN201821468684.8U patent/CN208674869U/en active Active
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