CN206077222U - A kind of pipe gallery Region control unit with strong anti-interference ability - Google Patents
A kind of pipe gallery Region control unit with strong anti-interference ability Download PDFInfo
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- CN206077222U CN206077222U CN201621083978.XU CN201621083978U CN206077222U CN 206077222 U CN206077222 U CN 206077222U CN 201621083978 U CN201621083978 U CN 201621083978U CN 206077222 U CN206077222 U CN 206077222U
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Abstract
This utility model is related to a kind of pipe gallery Region control unit with strong anti-interference ability, it is characterized in that, including housing and it is arranged at the interior circuit board of the housing, the circuit board has power interface, the simulation input interface for external analog signal data holding wire and the communication interface for external communication signal line for being used for external power supply, and the circuit board includes：Power protection unit is connected with the power interface, simulation input protection location, it is connected with the simulation input interface, communication input protection location, it is connected with the communication interface, the above-mentioned pipe gallery Region control unit with strong anti-interference ability utilizes power protection unit, simulation input protection location and communication input protection location and shell are to respectively to the power interface for external power supply, simulation input interface for external analog signal data holding wire and the communication interface for external communication signal line carry out the suppression of electromagnetic interference, reach the effect of preferably shielding electromagnetic signal interference.
Description
Technical field
This utility model is related to city integrated piping lane field, more particularly to a kind of integrated pipe with strong anti-interference ability
Corridor Region control unit.
Background technology
Usually, can there is certain electromagnetic interference in the environment of city integrated piping lane, if city integrated piping lane Region control
Device does not make the measure of anti-electromagnetic interference, is arranged on the control circuit inside pipe gallery zone control and is subject to electromagnetic interference
Afterwards, its monitoring signal will be interfered, and then can cause false alarm inside above-mentioned city integrated piping lane zone control, show
Show that the problems such as information errors and other equipment faults occurs.
Traditional cities pipe gallery zone control is integrated with various preventers, but can so cause the very big of cost
Improve.
Utility model content
Based on this, it is necessary to relatively low for the ability of the electromagnetism interference of above-mentioned pipe gallery zone control, and collect
The relatively costly problem into after anti-interference equipment, there is provided it is a kind of low cost and capacity of resisting disturbance it is stronger with strong anti-interference ability
Pipe gallery Region control unit.
A kind of pipe gallery Region control unit with strong anti-interference ability, it is characterised in that including housing and setting
In the interior circuit board of the housing, the circuit board is with the power interface for external power supply, for external analogue signal number
According to the simulation input interface and the communication interface for external communication signal line of holding wire, wherein, the circuit board includes：
Power protection unit, is connected with the power interface, for suppressing because being done into power interface by electromagnetic interference
Disturb signal；
Simulation input protection location, is connected with the simulation input interface, for suppressing because being entered described by electromagnetic interference
The interference signal of simulation input；
Communication input protection location, is connected with the communication interface, for suppressing because being entered the communication by electromagnetic interference
The interference signal of interface.
The above-mentioned pipe gallery Region control unit with strong anti-interference ability is protected using power protection unit, simulation input
Shield unit and communication input protection location and shell to respectively to for external power supply power interface, for external analogue signal
The simulation input interface of data signal line and the communication interface for external communication signal line carry out the suppression of electromagnetic interference, and profit
With the shielding of housing electromagnetic interference signal to external world, the effect of preferably shielding electromagnetic signal interference is reached.
Wherein in an embodiment, the power interface protection location includes：First varistor, one end and power supply
The positive pole connection of interface；Second varistor, one end are connected with the negative pole of power interface；First gas discharge tube, is connected to institute
State between the first varistor and the other end and ground of second varistor, for being total to into the power interface of releasing
Mode voltage.
Wherein in an embodiment, the power interface protection location includes：First can reset electric fuse, be serially connected with
The positive pole of the power interface, to prevent the control circuit to be subject to surge current to disturb or short circuit；3rd varistor, even
It is connected between the positive pole and negative pole of the power interface, for the common-mode voltage into the power interface is converted to differential mode electricity
Pressure；First Transient Suppression Diode, is connected between the power interface positive pole and negative pole, and negative pole and the institute of the diode
The positive pole for stating power interface is connected, to suppress the interference signal of the control circuit is entered by power interface；Common mode inductance and
With the first electric capacity of common mode inductance connection, the common mode inductance and first electric capacity are used for suppression common mode voltage and differential mode electricity
Pressure.
Wherein in an embodiment, the power interface protection location includes：First safety electric capacity, is connected to described
Between the positive pole and ground of power interface；Second safety electric capacity, is connected between the negative pole and ground of the power interface.
Wherein in an embodiment, the simulation input protection location includes：Second gas discharge tube, is connected to institute
State between the positive pole and negative pole of simulation input interface；Second electric capacity, be connected to the positive pole of the simulation input interface and negative pole it
Between, and make the minus earth of the simulation input interface；Low pass filter, for filtering into the dry of the simulation input interface
Disturb signal.
Wherein in an embodiment, the simulation input protection location also includes：Second can reset electric fuse, concatenation
In the positive pole of the simulation input interface, to prevent the control circuit to be subject to surge current to disturb or short circuit；
Wherein in an embodiment, communication input protection location includes：Second Transient Suppression Diode, is connected to institute
State between the positive pole of communication interface and negative pole, the common-mode voltage into the communication interface is converted into differential mode voltage；The
Three Transient Suppression Diodes, are connected between the positive pole and ground of the communication interface；3rd safety electric capacity, is connected to the communication
Between the positive pole and ground of interface, and with the 3rd transient voltage suppressor paralleling, for releasing into the communication interface
Common-mode voltage；Filter circuit, for filtering the interference signal into the communication interface.
Wherein in an embodiment, the housing is metal shell.
Wherein in an embodiment, the pipe gallery Region control unit with strong anti-interference ability is also wrapped
Include：Metal water joint, is arranged at the side of the housing, to external corresponding data signal line.
Wherein in an embodiment, the circuit board includes：Numeral input protection location, is connect with the numeral input
Mouth connection, for suppressing the interference signal because the digital input interface is entered by electromagnetic interference；
Description of the drawings
Pipe gallery Region control units with strong anti-interference ability of the Fig. 1 for one preferred implementation of this utility model
Structural representation；
The pipe gallery Region control unit with strong anti-interference ability of one preferred implementation of Fig. 2 this utility model
The module diagram of circuit board；
Pipe gallery Region control units with strong anti-interference ability of the Fig. 3 for one preferred implementation of this utility model
Power protection unit circuit diagram；
Pipe gallery Region control units with strong anti-interference ability of the Fig. 4 for one preferred implementation of this utility model
Simulation input protection location circuit diagram；
Pipe gallery Region control units with strong anti-interference ability of the Fig. 5 for one preferred implementation of this utility model
Communication input protection location circuit diagram.
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 enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain
This utility model, is not used to limit this utility model.
Unless otherwise defined, all of technology used herein and scientific terminology are led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.In term used in the description of the present utility model it is simply herein
The purpose of description specific embodiment, it is not intended that in limiting this utility model.Term as used herein " and/or " include
The arbitrary and all of combination of one or more related Listed Items.
With reference to shown in Fig. 1 and Fig. 2, this utility model one preferred implementation discloses a kind of with strong anti-interference ability
Pipe gallery Region control unit 10, including housing 200 and is arranged at the interior circuit board 100 of above-mentioned housing 200, foregoing circuit plate
100 have for the power interface 110 of external power supply, the simulation input interface 120 for external analog signal data holding wire,
Communication interface 130 and the digital input interface 170 for external digital signal data holding wire for external communication signal line
Connection, wherein, it is right that the power interface 110, simulation input interface 120, digital input interface 170 and communication interface 130 are respectively provided with
The both positive and negative polarity answered, foregoing circuit plate 100 also include：Power protection unit 140, simulation input protection location 150, numeral input
Protection location 180 and communication input protection location 160.
Wherein, above-mentioned power protection unit 140 is connected with above-mentioned power interface 110, for suppressing because being entered by electromagnetic interference
Enter the interference signal of power interface 110.
Specifically, as shown in figure 3, the power interface protection location 140 includes the first varistor RV2 and the second pressure-sensitive electricity
Resistance RV3 and first gas discharge tube GDT1, wherein, one end of above-mentioned first varistor RV2 is connected with the positive pole of power interface 110
Connect, second varistor RV3 one end is connected with the negative pole of power interface 110, and above-mentioned first gas discharge tube GDT1 is connected to
Between the other end and ground PGND of the RV3 of above-mentioned first varistor RV2 and above-mentioned second varistor, above-mentioned first pressure-sensitive electricity
The circuit of resistance RV2 and the second varistor RV3 and first gas discharge tube GDT1 compositions is used to release into above-mentioned power interface
110 common-mode voltage.
Above-mentioned power interface protection location 140 also includes that the 3rd varistor RV1, the 3rd varistor RV1 are connected to
Between the positive pole and negative pole of above-mentioned power interface 110, for the common-mode voltage into above-mentioned power interface 110 is converted to differential mode
Voltage；
Above-mentioned power interface protection location 140 can also reset electric fuse RT1 including first, and this first can reset electric fuse
RT1 is serially connected with the positive pole of above-mentioned power interface 110, to prevent above-mentioned control circuit to be subject to surge current to disturb or short circuit, when
Power line carries out short-circuit protection in the case of persistently there is larger surge current or line short, and when interference or failure vanishes, the
The one electric fuse RT1 that can reset voluntarily can recover；
Above-mentioned power interface protection location 140 also includes the first Transient Suppression Diode D2, and first transient state suppresses two poles
Pipe D2 is connected between 110 positive pole of above-mentioned power interface and negative pole, and the negative pole of above-mentioned first Transient Suppression Diode D2 with it is upper
The positive pole for stating power interface is connected, and to suppress the interference signal of above-mentioned control circuit is entered by power interface, is mainly used for
The circuit for absorbing prime the first varistor RV2 and the second varistor RV3 and first gas discharge tube GDT1 compositions fails to inhale
Receive less differential mode peak voltage and by voltage clamping in certain limit；
Above-mentioned power interface protection location 140 also includes common mode inductance L2 and the first electric capacity being connected with common mode inductance L2
C1, above-mentioned common mode inductance L2 and above-mentioned first electric capacity C1 are used for suppression common mode voltage and differential mode voltage.
Above-mentioned power interface protection location 140 also includes that reverse connecting protection diode D1, reverse connecting protection diode D1 are used for
When power line both positive and negative polarity reversal connection, circuit is protected.
Above-mentioned power interface protection location 140 also includes the first safety electric capacity YC1 and the second safety electric capacity YC2, above-mentioned the
One safety electric capacity YC1 is connected between the positive pole and ground of above-mentioned power interface 110；Second safety electric capacity YC2 is connected to above-mentioned electricity
Between the negative pole and ground of source interface 110, which is mainly used in common-mode voltage of releasing.
After power source supplying voltage is filtered by above-mentioned power protection unit 140 after entering power interface 110, subsequently into DC/
DC isolation modules, and power to the whole pipe gallery Region control unit 10 with strong anti-interference ability, so just can be effective
Prevent the interference of external electromagnetic signal.
Above-mentioned simulation input protection location 150 is connected with above-mentioned simulation input interface 120, for example simulation input interface 120
4～20m of input analogue signal inputs, the simulation input protection location 150 are used to suppress because being entered above-mentioned simulation by electromagnetic interference
The interference signal of input；
Specifically, as shown in figure 4, the simulation input protection location 150 include above-mentioned second gas discharge tube GDT2, second
Electric capacity C2 and low pass filter.Wherein, above-mentioned second gas discharge tube GDT2 is connected to the positive pole of above-mentioned simulation input interface 120
Between negative pole, for eliminating too high due to voltage spikes, the voltage of input is restricted to into certain limit.Above-mentioned electric capacity C2 is connected to
Between the positive pole and negative pole of above-mentioned simulation input interface 120, and make the minus earth of above-mentioned simulation input interface, for filter from
The due to voltage spikes of analog signal data line entering signal input interface 120.
Above-mentioned low pass filter is made up of resistance R2, electric capacity C3, C4 and inductance L4, and the low pass filter is mainly used in filtering
Into the interference signal of above-mentioned simulation input interface, the signal interference of more than 50Hz can be effectively leached.
, also including sampling resistor R3 and Zener diode D3, its sampling resistor R3 is used for will for simulation input protection location 150
Current signal is converted to voltage signal, and Zener diode D3 is clamped certain for the voltage signal that will be obtained by sampling resistor R3
Scope.
Simulation input protection location 150 can also reset electric fuse RT2 including second, and this second can reset electric fuse RT2 strings
The positive pole of above-mentioned simulation input interface 120 is connected to, to prevent above-mentioned control circuit to be subject to surge current to disturb or short circuit, works as electricity
Source line carries out short-circuit protection in the case of persistently there is larger surge current or line short, and when interference or failure vanishes, second
The electric fuse RT2 that can reset voluntarily can recover；
After analog data signal enters above-mentioned simulation input interface 120, filtered by above-mentioned simulation input protection location 150
Afterwards, subsequently into AD acquisition modules, so just can effectively prevent analogue signal from receiving the interference of electromagnetic signal.
Above-mentioned communication input protection location 160 is connected with above-mentioned communication interface 130, for suppressing because being entered by electromagnetic interference
The interference signal of above-mentioned communication interface.
Specifically, as shown in figure 5, above-mentioned communication input protection location 160 include the second Transient Suppression Diode D4, the 3rd
Transient Suppression Diode D5, the 3rd safety electric capacity C5 and filter circuit, above-mentioned second Transient Suppression Diode D4, are connected to above-mentioned
Between the positive pole and negative pole of communication interface 130, the common-mode voltage into above-mentioned communication interface 130 is converted into differential mode electricity
Pressure；Above-mentioned 3rd Transient Suppression Diode D5 is connected between the positive pole and ground of above-mentioned communication interface 130；3rd safety electric capacity C5
It is connected between the positive pole and ground of above-mentioned communication interface 130, and it is in parallel with above-mentioned 3rd Transient Suppression Diode D5, for releasing
Into the common-mode voltage of above-mentioned communication interface；
In the same manner, the 4th Transient Suppression Diode D6 in Fig. 5 is similar with the 3rd Transient Suppression Diode D5 functions, the 4th peace
Electric capacity C6 is similar with above-mentioned 3rd safety electric capacity C5 for rule, and this utility model here is not being repeated.
Above-mentioned filter circuit, is made up of together with electric capacity C7, C8 inductance or magnetic resistance L5, L6, is led to for filtering into above-mentioned
The interference signal of letter interface.
Circuit board 100 in present embodiment can also include digital input interface 170 and numeral input protection location
180, above-mentioned numeral input protection location 180 is connected with digital input interface 170 is stated, for suppressing because being entered institute by electromagnetic interference
The interference signal of digital input interface is stated, in detail, above-mentioned numeral input protection location utilizes photo-coupler, relay, net
Network transformator and Transient Suppression Diode array are to digital input interface.
The housing 200 of the pipe gallery Region control unit 10 with strong anti-interference ability in present embodiment is metal
Housing, in the side of the metal shell, is provided with metal water joint, for external corresponding data signal line.So utilize
Metal is electromagnetically shielded, and can be effectively accomplished prevents the interference of external electromagnetic signal.
Used in this utility model above-described embodiment adopts shielded cable to outer cable, and by all of cable screen
Cover lamination to be connected on the earthing screw inside the above-mentioned pipe gallery Region control unit 10 with strong anti-interference ability；
The above-mentioned pipe gallery Region control unit 10 with strong anti-interference ability utilize power protection unit 140, simulation
Input protection location 150, numeral input protection location 180, communication input protection location 160 and shell are to respectively to for external
The power interface 110 of power supply, the simulation input interface 120 for external analog signal data holding wire, for it is external numeral letter
The digital input interface 170 of number holding wire and the communication interface 130 for external communication signal line carry out electromagnetic interference
Suppress, and the shielding of the electromagnetic interference signal using housing to external world, reach the effect of preferably shielding electromagnetic signal interference.
Each technical characteristic of embodiment described above arbitrarily can be combined, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these belong to
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of pipe gallery Region control unit with strong anti-interference ability, it is characterised in that including housing and be arranged at
The interior circuit board of the housing, the circuit board is with the power interface for external power supply, for external analog signal data
The simulation input interface of holding wire and the communication interface for external communication signal line, wherein, the circuit board includes：
Power protection unit, is connected with the power interface, for suppressing to believe because of the interference that power interface is entered by electromagnetic interference
Number；
Simulation input protection location, is connected with the simulation input interface, for suppressing because being entered the simulation by electromagnetic interference
The interference signal of input；
Communication input protection location, is connected with the communication interface, for suppressing because being entered the communication interface by electromagnetic interference
Interference signal.
2. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that institute
Stating power interface protection location includes：
First varistor, one end are connected with the positive pole of power interface；
Second varistor, one end are connected with the negative pole of power interface；
First gas discharge tube, is connected between first varistor and the other end and ground of second varistor,
For releasing into the common-mode voltage of the power interface.
3. the pipe gallery Region control unit with strong anti-interference ability according to claim 2, it is characterised in that institute
Stating power interface protection location includes：
First can reset electric fuse, be serially connected with the positive pole of the power interface, to prevent the control circuit to be subject to surge electricity
Drain off and disturb or short circuit；
3rd varistor, is connected between the positive pole and negative pole of the power interface, for by into the power interface
Common-mode voltage is converted to differential mode voltage；
First Transient Suppression Diode, is connected between the power interface positive pole and negative pole, and the negative pole of the diode with
The positive pole of the power interface is connected, to suppress the interference signal of the control circuit is entered by power interface；
Common mode inductance and the first electric capacity with common mode inductance connection, the common mode inductance and first electric capacity are used for suppression common mode
Voltage and differential mode voltage.
4. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that institute
Stating power interface protection location includes：
First safety electric capacity, is connected between the positive pole and ground of the power interface；
Second safety electric capacity, is connected between the negative pole and ground of the power interface.
5. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that institute
Stating simulation input protection location includes：
Second gas discharge tube, is connected between the positive pole and negative pole of the simulation input interface；
Second electric capacity, is connected between the positive pole and negative pole of the simulation input interface, and makes the negative of the simulation input interface
Pole is grounded；
Low pass filter, for filtering the interference signal into the simulation input interface.
6. the pipe gallery Region control unit with strong anti-interference ability according to claim 5, it is characterised in that institute
Stating simulation input protection location also includes：
Second can reset electric fuse, be serially connected with the positive pole of the simulation input interface, to prevent the control circuit to be subject to wave
Gush current interference or short circuit.
7. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that logical
News input protection location includes：
Second Transient Suppression Diode, is connected between the positive pole and negative pole of the communication interface, to will be into the communication
The common-mode voltage of interface is converted into differential mode voltage；
3rd Transient Suppression Diode, is connected between the positive pole and ground of the communication interface；
3rd safety electric capacity, is connected between the positive pole and ground of the communication interface, and with the 3rd Transient Suppression Diode
Parallel connection, for releasing into the common-mode voltage of the communication interface；
Filter circuit, for filtering the interference signal into the communication interface.
8. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that institute
Housing is stated for metal shell.
9. the pipe gallery Region control unit with strong anti-interference ability according to claim 8, it is characterised in that institute
Stating the pipe gallery Region control unit with strong anti-interference ability also includes：
Metal water joint, is arranged at the side of the housing, to external corresponding data signal line.
10. the pipe gallery Region control unit with strong anti-interference ability according to claim 1, it is characterised in that
The circuit board includes：
Numeral input protection location, is connected with the digital input interface, for suppressing because being entered the numeral by electromagnetic interference
The interference signal of input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083978.XU CN206077222U (en) | 2016-09-27 | 2016-09-27 | A kind of pipe gallery Region control unit with strong anti-interference ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083978.XU CN206077222U (en) | 2016-09-27 | 2016-09-27 | A kind of pipe gallery Region control unit with strong anti-interference ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077222U true CN206077222U (en) | 2017-04-05 |
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ID=58439027
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621083978.XU Active CN206077222U (en) | 2016-09-27 | 2016-09-27 | A kind of pipe gallery Region control unit with strong anti-interference ability |
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| CN (1) | CN206077222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445112A (en) * | 2019-08-07 | 2019-11-12 | 威海精讯畅通电子科技有限公司 | A kind of surge processing circuit and surge processing unit |
-
2016
- 2016-09-27 CN CN201621083978.XU patent/CN206077222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445112A (en) * | 2019-08-07 | 2019-11-12 | 威海精讯畅通电子科技有限公司 | A kind of surge processing circuit and surge processing unit |
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Address after: 215123 3C, 3D, Aoyang Shunchang building, 270 Dongping street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Suzhou Guangge Technology Co.,Ltd. Address before: 215021 no.270 Dongping street, Suzhou park, Suzhou City, Jiangsu Province Patentee before: SUZHOU GUANGGE EQUIPMENT Co.,Ltd. |