CN208110303U - A kind of 16 channel switch amount input modules - Google Patents
A kind of 16 channel switch amount input modules Download PDFInfo
- Publication number
- CN208110303U CN208110303U CN201721630479.2U CN201721630479U CN208110303U CN 208110303 U CN208110303 U CN 208110303U CN 201721630479 U CN201721630479 U CN 201721630479U CN 208110303 U CN208110303 U CN 208110303U
- Authority
- CN
- China
- Prior art keywords
- switch amount
- circuit
- amount input
- channel switch
- cpld
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 claims description 4
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses a kind of 16 channel switch amount input modules, for realizing On-off signal detection, which is characterized in that including 16 way switch amount input circuits, CPLD, 485 communication interfaces, power module A and power module B；16 way switch amount input circuits can be set as DC48V or DC24V for inputting 16 channel switch amounts, the inquiry voltage of every channel switch amount signal by short-circuit jumper；CPLD obtains the switching value data in 16 channels by 16 way switch amount input circuits, and by 485 communication interfaces, completes the communication between host controller；Direct current 24V is converted to 5V and 3.3V by power module A, for powering to 485 communication interfaces and CPLD；Direct current 24V is converted to 48V or 24V by transformer circuit and exported by power module B, and 12V output is powered for 16 way switch amount input circuits.The inquiry voltage of module is set as 24V or 48V, is realized on a kind of module by the utility model by short-circuit jumper, and the output of two kinds of inquiry voltage of simple switching facilitates the use at scene.
Description
Technical field
The utility model relates to the On-off signal module field of DCS system, more particularly to a kind of 16 channel switch amounts are defeated
Enter module.
Background technique
The On-off signal module of DCS system is one of the system module of Xinhua's NetPAC system, mainly realizes switching value
Input detection.In current DCS system, common are inquiry voltage be 24V digital quantity inputting modular unit and inquiry voltage be 48V
Two kinds of digital quantity inputting modular unit, and replacement compatibility cannot be exchanged between two kinds of modules.
Therefore, those skilled in the art is dedicated to developing a kind of 16 way switch amount input modules, can be jumped by short circuit
The inquiry voltage of module is set as 24V or 48V, realized on a kind of module by line, two kinds of inquiry voltages of simple switching
Output facilitates the use at scene.
Utility model content
In view of the above drawbacks of the prior art, the utility model provides a kind of 16 channel switch amount input modules, generation
Replaced inquiry voltage be 24V digital quantity inputting modular unit and inquiry voltage be 48V digital quantity inputting modular unit, pass through short-circuit jumper, will
The inquiry voltage of module is set as 24V or 48V, realizes on a kind of module, the output of two kinds of inquiry voltage of simple switching,
Facilitate the use at scene.
To achieve the above object, the utility model provides a kind of 16 channel switch amount input modules, for realizing switch
Amount input detection, which is characterized in that including 16 way switch amount input circuits, CPLD, 485 communication interfaces, power module A and power supply
Module B, wherein
The 16 way switch amount input circuit is for inputting 16 channel switch amounts, the inquiry voltage of every channel switch amount signal
It can be set as DC48V or DC24V by short-circuit jumper；
The CPLD obtains the switching value data in 16 channels by the 16 way switch amount input circuit, and by described
485 communication interfaces complete the communication between host controller；
Direct current 24V is converted to 5V and 3.3V by the power module A, for powering to 485 communication interface and CPLD；
Direct current 24V is converted to 48V or 24V by transformer circuit and exported by the power module B, and 12V output, is described
The power supply of 16 way switch amount input circuits.
In the better embodiment of the utility model, the 16 channel switch amount input module further includes light-coupled isolation electricity
Road, the 16 way switch input circuit are connected with the optical coupling isolation circuit, the 16 channel switch amount number that will be received
The CPLD is transferred to according to by the optical coupling isolation circuit；The power module A powers to the optical coupling isolation circuit.
In this practical another better embodiment, the 16 channel switch amount input module further includes LED light,
It is used to indicate opening for channel in the operating status and the 16 way switch amount input circuit of the 16 channel switch amount input module
OFF signal state, the power module A power to the LED light.
In this practical another better embodiment, the 16 channel switch amount input module further includes channel ground connection inspection
Slowdown monitoring circuit, the Grounding for the On-off signal circuit to the 16 channel switch amount input module warns, described
Power module A powers to the channel grounded inspection circuit.
In this practical another better embodiment, the CPLD is in LATTICE company MachXO2 series
LCMXO2-1200 chip.
In this practical another better embodiment, the 16 way switch amount input circuit further includes two pole of reverse protection
Pipe, for protecting the 16 way switch amount input circuit to input brought influence from scene.
Technical effect
The utility model discloses a kind of 16 channel switch amount input modules, by short-circuit jumper, by the inquiry electricity of module
Pressure is set as 24V or 48V, realizes on a kind of module, and the output of two kinds of inquiry voltage of simple switching facilitates scene
It uses.
Furthermore the utility model also uses optical coupling isolation circuit, realizes the protective separation between input signal and CPLD.
Furthermore the utility model additionally uses reverse protection diode protection switching value input circuit and inputs from scene
Brought influence improves the reliability of module.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 is the functional block diagram of the 16 channel switch amount input module of one kind of a preferred embodiment of the utility model；
Fig. 2 is the switching value input circuit schematic illustration of a preferred embodiment of the utility model.
Wherein, the power supply for the output 48V/24V that VO is power module B, R1-R4 are 2K resistance, and R5 is 1K resistance, D1, D2
For 1N4005 diode, D3 is current regulator diode S-102T, and U1 is optocoupler EL357NC, and C1 is 1000PF capacitor.
Specific embodiment
Multiple preferred embodiments that the utility model is introduced below with reference to Figure of description, keep its technology contents clearer
Be easy to understand.The utility model can be emerged from by many various forms of embodiments, the protection of the utility model
Range is not limited only to the embodiment mentioned in text.
As shown in Figure 1, a kind of 16 channel switch amount input modules are applied in NetPAC system, it is main to realize that switching value is defeated
Enter detection.Using two-way redundancy 24V power supply power supply, and 16 channel switch amount signals can be at most inputted, input type is nothing
Source dry contact.16 channel switch amount input modules of one kind include 16 way switch amount input circuits, CPLD, 485 communication interfaces, LED
Indicator light, channel grounded inspection circuit, power module A and power module B.
16 way switch amount input circuits can lead to for inputting 16 channel switch amounts, the inquiry voltage of every channel switch amount signal
Crossing short-circuit jumper settings is DC48V or DC24V.
CPLD is the LCMXO2-1200 chip in LATTICE company MachXO2 series, inputs electricity by 16 way switch amounts
The switching value data in rood to 16 channels completes the communication between host controller and by 485 communication interfaces.
LED light be used to indicate the 16 channel switch amount input module operating status and the 16 way switch amount it is defeated
Enter the switching signal state in channel in circuit, LED light is connect with CPLD.
Channel grounded inspection circuit is used for the Grounding to the On-off signal circuit of 16 channel switch amount input modules
It is warned, avoids ground fault, safeguards system operates normally, and channel grounded inspection circuit is connect with CPLD.
Direct current 24V is converted to 5V and 3.3V by power module A, is used for 485 communication interfaces, CPLD, LED light and is led to
The power supply of road grounded inspection circuit.
Direct current 24V is converted to VO (48V or 24V) output by transformer circuit by power module B, and 12V output is 16 tunnels
Switching value input circuit power supply.
As shown in Fig. 2, 16 channel switch amount input modules of one kind further include light-coupled isolation in another preferred embodiment
Circuit and reverse protection diode.Optocoupler U1 realizes the effect of electric signal isolation between the input of external switch amount signal and CPLD.
The front-end circuit of optocoupler U1, resistance R3 is in parallel with the front end input diode of optocoupler, voltage 12V by resistance R3 with
Optocoupler front end, diode D2, resistance R2, resistance R1, external switch amount input DI0, most Zhongdao GND1；Voltage VO passes through current stabilization two
Pole pipe D3, diode D1, resistance R1, external switch amount input DI0, most Zhongdao GND1.
The circuit of output terminal of optocoupler U1, optocoupler pin 3 are directly connected to GND2, and 48V is connected to optocoupler by resistance R4 and draws
The level change of foot 4, pin 4 passes to CPLD by resistance R5, and capacitor C1 realizes the effect of High frequency filter.
When external switch amount input DI0 is in open-circuit condition, voltage is VO at DI0+；Without electricity between 1,2 pins of optocoupler
Stream passes through, and optocoupler output triode is not turned on, and level is 3.3V at pin 4, and voltage is 3.3V, as high electricity at input0
It is flat.When external switch amount inputs DI0 in an ON state, voltage is 0 at DI0+, DI0-；1,2 pin (optocouplers of optocoupler
Front end diode) between there is electric current to pass through, optocoupler output triode ON, voltage is 0V at pin 4, makes voltage at input0
About 0V, as low level.
Above circuit realizes the input detection of switching value, and strong antijamming capability is realized using optical coupling isolation circuit
Protective separation between input signal and CPLD.In addition, reverse protection diode D1 and D2 protect switching value input circuit to exempt from
It is influenced by brought by the input of scene, improves the reliability of module.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that this field ordinary skill without
It needs creative work according to the present utility model can conceive and makes many modifications and variations.Therefore, it is all in the art
Technical staff passes through logical analysis, reasoning, or a limited experiment according to the design of the utility model on the basis of existing technology can
It, all should be within the scope of protection determined by the claims with obtained technical solution.
Claims (5)
1. a kind of 16 channel switch amount input modules, for realizing On-off signal detection, which is characterized in that including 16 way switch
Measure input circuit, CPLD, 485 communication interfaces, power module A and power module B, wherein
The 16 way switch amount input circuit can lead to for inputting 16 channel switch amounts, the inquiry voltage of every channel switch amount signal
Crossing short-circuit jumper settings is DC48V or DC24V；
The 16 channel switch amount input module further includes optical coupling isolation circuit, the 16 way switch input circuit and the optocoupler
Isolation circuit is connected, and the 16 channel switch amount data received is transferred to by the optical coupling isolation circuit described
CPLD；The power module A powers to the optical coupling isolation circuit；
The optical coupling isolation circuit includes optocoupler U1, and the optocoupler U1 is arranged to realize the input of external switch amount signal and CPLD
Between electric signal isolation effect；The front-end circuit of the optocoupler U1, the front end input diode of resistance R3 and the optocoupler U1
Parallel connection, voltage 12V pass through the front end of the resistance R3 and optocoupler U1, diode D2, resistance R2, resistance R1, and external switch amount is defeated
Enter DI0, most Zhongdao GND1；Voltage VO passes through current regulator diode D3, diode D1, resistance R1, and external switch amount inputs DI0, most
Zhongdao GND1；The circuit of output terminal of the optocoupler U1, optocoupler pin 3 are directly connected to GND2, and voltage 48V is connected by resistance R4
Level change to pin 4, pin 4 passes to CPLD by resistance R5；
The CPLD obtains the switching value data in 16 channels by the 16 way switch amount input circuit, and passes through described 485
Communication interface completes the communication between host controller；
Direct current 24V is converted to 5V and 3.3V by the power module A, for powering to 485 communication interface and CPLD；
Direct current 24V is converted to 48V or 24V by transformer circuit and exported by the power module B, and 12V output is 16 tunnel
Switching value input circuit power supply.
2. 16 channel switch amount input module as described in claim 1, which is characterized in that the 16 channel switch amount inputs mould
Block further includes LED light, is used to indicate the operating status and the 16 way switch amount of the 16 channel switch amount input module
The switching signal state in channel in input circuit, the power module A power to the LED light.
3. 16 channel switch amount input module as described in claim 1, which is characterized in that the 16 channel switch amount inputs mould
Block further includes channel grounded inspection circuit, the ground connection for the On-off signal circuit to the 16 channel switch amount input module
Situation is warned, and the power module A powers to the channel grounded inspection circuit.
4. 16 channel switch amount input module as described in claim 1, which is characterized in that the CPLD is LATTICE company
LCMXO2-1200 chip in MachXO2 series.
5. 16 channel switch amount input module as described in claim 1, which is characterized in that the 16 way switch amount input circuit
It further include reverse protection diode, for protecting the 16 way switch amount input circuit to input brought influence from scene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630479.2U CN208110303U (en) | 2017-11-29 | 2017-11-29 | A kind of 16 channel switch amount input modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630479.2U CN208110303U (en) | 2017-11-29 | 2017-11-29 | A kind of 16 channel switch amount input modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208110303U true CN208110303U (en) | 2018-11-16 |
Family
ID=64131335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721630479.2U Active CN208110303U (en) | 2017-11-29 | 2017-11-29 | A kind of 16 channel switch amount input modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208110303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980641A (en) * | 2019-04-11 | 2019-07-05 | 重庆川仪控制系统有限公司 | A kind of DCS control system power supply and DCS control system |
| CN112099418A (en) * | 2020-10-24 | 2020-12-18 | 西安热工研究院有限公司 | DCS switching value input detection clamping piece |
-
2017
- 2017-11-29 CN CN201721630479.2U patent/CN208110303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980641A (en) * | 2019-04-11 | 2019-07-05 | 重庆川仪控制系统有限公司 | A kind of DCS control system power supply and DCS control system |
| CN112099418A (en) * | 2020-10-24 | 2020-12-18 | 西安热工研究院有限公司 | DCS switching value input detection clamping piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8909842B2 (en) | High current multi-port USB hub | |
| CN104345867B (en) | Field device | |
| CN208110303U (en) | A kind of 16 channel switch amount input modules | |
| CN204462241U (en) | A kind of voltage, electric current light measurement system possessing on-line checkingi function | |
| CN103499750A (en) | Portable multifunctional shore power system tester | |
| CN108417002A (en) | A kind of high-performance MBUS collectors for water meter | |
| CN103176939B (en) | Redundant serial communication device with automatic replacing function | |
| CN204214944U (en) | A kind of general radio frequency condition monitoring and fault diagnosis warning device | |
| CN108134518A (en) | A kind of voltage conversion circuit | |
| CN207301205U (en) | A kind of intelligent station prepared auto restart drive aid | |
| CN209911814U (en) | Multimedia classroom digital equipment supervisory systems | |
| CN204241559U (en) | A kind of electric current exports self-diagnostic circuit | |
| CN105866668A (en) | Detection device for secondary circuit of electric isolation disconnecting link | |
| CN209432896U (en) | A kind of current measurement circuit based on built-in Linux operating system | |
| CN222691732U (en) | Communication transceiver controller and communication transceiver | |
| CN207895263U (en) | A kind of box type transformer control device | |
| CN204557138U (en) | Switch switching circuit | |
| CN205753338U (en) | A kind of Novel intelligent current-limiting protection device | |
| CN206208861U (en) | Gas alarm controller with multi-channel module structure | |
| CN220087007U (en) | Intelligent operation and maintenance integrated controller of monitoring system | |
| CN203054830U (en) | Redundancy type serial interface communication device with automatic replacing function | |
| CN209372040U (en) | Data collection station based on STM8L series | |
| CN202614916U (en) | Electronic load machine | |
| CN209070535U (en) | Safe master control borad based on 411 processor of Shen prestige and Shen Wei ICH nest plate | |
| CN106095710B (en) | Multifunctional signal switching device for air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |