CN213276343U - Automatic component signal acquisition and transmission system - Google Patents
Automatic component signal acquisition and transmission system Download PDFInfo
- Publication number
- CN213276343U CN213276343U CN202022766743.3U CN202022766743U CN213276343U CN 213276343 U CN213276343 U CN 213276343U CN 202022766743 U CN202022766743 U CN 202022766743U CN 213276343 U CN213276343 U CN 213276343U
- Authority
- CN
- China
- Prior art keywords
- photoelectric conversion
- conversion module
- signal acquisition
- transmission system
- serial server
- 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
Images
Landscapes
- Programmable Controllers (AREA)
Abstract
The utility model relates to an automatic control field, concretely relates to automatic change component signal acquisition transmission system has not only reduced the construction volume, has still greatly avoided the decay of signal simultaneously. The utility model discloses automatic change component signal acquisition transmission system, including control module, automatic component, serial server, photoelectric conversion module and optical cable, serial server's serial port interface is connected with automatic component through shielding the paired line, and serial server's network interface is connected with first photoelectric conversion module, and control module is connected with second photoelectric conversion module, is connected through the optical cable between first photoelectric conversion module and the second photoelectric conversion module. The utility model is suitable for a hydropower station automation component signal acquisition.
Description
Technical Field
The utility model relates to an automatic control field, concretely relates to automatic change component signal acquisition transmission system.
Background
The control objects of the hydropower station public equipment comprise a factory leakage drainage control system, a unit maintenance drainage control system, a medium-pressure air compressor control system, a low-pressure air compressor control system and the like, and in an unattended (unattended) hydropower station operation mode, the control systems adopt independent PLC (programmable logic controller) control, can directly carry out the starting and stopping operation of the controlled equipment on a control cabinet through buttons, can also be automatically executed by the control cabinet according to a set control program, and can also receive starting and stopping control command signals from a power station computer monitoring system. The PLC needs to collect the switching value or 4-20 mA analog quantity information of automation elements such as a liquid level switch, a liquid level transmitter, a pressure transmitter and the like of a controlled device on site to participate in an automatic control process. Usually, the unit auxiliary equipment and the PLC control screen of the public equipment are arranged near the controlled equipment, and the automation element is not far away from the control screen. Therefore, the conventional design of the hydropower station is that a switching value signal of an automation element is accessed to a DI or AI template of a PLC (programmable logic controller) through a control cable and an analog signal in a hard-wired mode of shielding a twisted pair cable to realize data acquisition.
However, the plant layout of the hydropower plant engineering is influenced by the environmental conditions in the field. For example, in some projects, controlled equipment and automation elements are arranged beside a seepage collecting pool deep in a diversion tunnel, and the distance from the tunnel opening is more than 1000 meters. Because the environment in the tunnel is dark and humid, which is not favorable for long-term operation of electrical equipment and is inconvenient for operators to patrol and overhaul, the diversion tunnel leakage drainage control cabinet is arranged in a power distribution room at the diversion tunnel opening. Because the automation component is far away from the control cabinet, the quantity of the automation components is large, and the automation components are dispersed, a plurality of shielding twisted-pair wires with ultra-far distances need to be laid in the diversion tunnel to reach the PLC control cabinet, the transmission signal of analog quantity 4-20 mA current has certain attenuation, and the stable and good operation of the seepage drainage control system in the project is not facilitated. Therefore, under the restriction of an application scene that the hydropower station control cabinet is far away from controlled equipment and an automation element, the traditional hard-wired mode has the engineering problems of large transmission signal attenuation and low reliability.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic change component signal acquisition transmission system has not only greatly reduced the decay of signal, has simplified the engineering volume simultaneously, has improved the reliability of system.
The utility model discloses take following technical scheme to realize above-mentioned purpose, automatic component signal acquisition transmission system, including control module, automatic component, serial server, first photoelectric conversion module, second photoelectric conversion module and optical cable, serial server's serial interface passes through the shielding paired line and is connected with automatic component, and serial server's network interface is connected with first photoelectric conversion module, and control module is connected with second photoelectric conversion module, is connected through the optical cable between first photoelectric conversion module and the second photoelectric conversion module.
Furthermore, in order to protect the serial server and the photoelectric conversion module, the automatic element signal acquisition and transmission system further comprises a transfer box, and the serial server and the first photoelectric conversion module are arranged in the transfer box.
Further, in order to provide power supply and power supply protection, an AC/DC switching power supply is further arranged in the transfer box of the automatic element signal acquisition and transmission system and is used for providing power supply for on-site automatic elements, a serial server and a photoelectric conversion module.
Furthermore, in order to realize multifunctional control, the control module is a PLC control cabinet.
Further, in order to save cost, the serial server is a ZLAN5400 multi-serial server.
The utility model discloses under the condition far away from the switch board at automation component, adopt serial servers to convert automation component's serial ports data signal to TCP/IP network signal, a pair of photoelectric conversion module of rethread and an optical cable are connected with the switch board, have greatly expanded serial devices's communication distance, have reduced the decay of signal, have simplified the engineering volume simultaneously, have improved the reliability of system.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention.
Detailed Description
The utility model discloses automatic change component signal acquisition transmission system, including control module, automatic component, serial servers, first photoelectric conversion module, second photoelectric conversion module and optical cable, serial servers's serial ports interface is connected with automatic component through the shielding paired line, and serial servers's network interface is connected with first photoelectric conversion module, and control module is connected with second photoelectric conversion module, is connected through the optical cable between first photoelectric conversion module and the second photoelectric conversion module.
In order to protect the serial server and the photoelectric conversion module, the automatic element signal acquisition and transmission system further comprises a transfer box, and the serial server and the first photoelectric conversion module are arranged in the transfer box.
In order to provide power supply and power supply protection, an AC/DC switching power supply is also arranged in the transfer box of the automatic element signal acquisition and transmission system and is used for providing power supply for on-site automatic elements, a serial server and a photoelectric conversion module.
In order to realize multifunctional control, the control module is a PLC control cabinet.
In order to save cost, the serial server is a ZLAN5400 multi-serial server.
The utility model discloses an embodiment structure block diagram, as figure 1, including pressure transmitter, a plurality of liquid level transmitter, pressure transmitter and a plurality of liquid level transmitter pass through the serial ports interface connection of shielding paired line and serial servers, serial servers is connected with a photoelectric conversion module, this photoelectric conversion module converts the network signal of ethernet data into photoelectric signal, be connected with another photoelectric conversion module through single mode fiber, this photoelectric conversion module converts optical signal into network signal, resend to the CPU in the PLC switch board, wherein serial servers and the photoelectric conversion module of being connected with serial servers install in the transfer box.
The utility model discloses optimized the data acquisition mode of numerous automatic components in a control system, passed through control cable with the conventional automatic first switch volume signal of power station, analog signal passes through the DI or AI template scheme that the mode of shielding the hard wiring of twisted pair line inserts PLC and compares, the utility model discloses eliminated the signal attenuation problem that the remote transmission of analog signal probably exists, and the problem that the automatic component cable of dispersion laid, adopted simply, reliable design, on the basis of not changing the reliability of switch board internal wiring in order to ensure control circuit, twisted pair will automatic component pass through RS485 mouthful whole serial servers that are connected to through the shielding, utilize the serial servers of on-the-spot transfer case to realize on-the-spot numerous automatic component networking and insert seepage drainage PLC switch board, realize the reliable collection and the transmission of data.
To sum up, the utility model discloses automatic component signal acquisition transmission system has not only greatly reduced the decay of signal, has simplified the engineering volume simultaneously, has improved the reliability of system.
Claims (5)
1. The automatic element signal acquisition and transmission system comprises a control module, an automatic element and is characterized by further comprising a serial server, a first photoelectric conversion module, a second photoelectric conversion module and an optical cable, wherein a serial port interface of the serial server is connected with the automatic element through a shielding twisted pair, a network interface of the serial server is connected with the first photoelectric conversion module, the control module is connected with the second photoelectric conversion module, and the first photoelectric conversion module is connected with the second photoelectric conversion module through the optical cable.
2. The automated component signal acquisition and transmission system of claim 1, further comprising a transfer box, wherein the serial server and the first photoelectric conversion module are disposed in the transfer box.
3. The system for signal acquisition and transmission of an automation component as claimed in claim 2, wherein an AC/DC switching power supply is further provided in the transfer box for supplying power to the on-site automation component, the serial server and the photoelectric conversion module.
4. The automated component signal acquisition and transmission system of any one of claims 1-3, wherein the control module is a PLC control cabinet.
5. The automated component signal acquisition and transmission system of any of claims 1-3, wherein the serial server is a ZLAN5400 multi-serial server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022766743.3U CN213276343U (en) | 2020-11-25 | 2020-11-25 | Automatic component signal acquisition and transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022766743.3U CN213276343U (en) | 2020-11-25 | 2020-11-25 | Automatic component signal acquisition and transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213276343U true CN213276343U (en) | 2021-05-25 |
Family
ID=75955104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022766743.3U Active CN213276343U (en) | 2020-11-25 | 2020-11-25 | Automatic component signal acquisition and transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213276343U (en) |
-
2020
- 2020-11-25 CN CN202022766743.3U patent/CN213276343U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104242471B (en) | A kind of comprehensive automation system of transformer substation | |
| CN104242472B (en) | A kind of railway station low buckling distribution intelligent monitor system | |
| CN2786671Y (en) | Distributing type diving electric engine monitoring system based on CAN bus | |
| CN111464968A (en) | Multifunctional data acquisition controller based on 4G-DTU wireless network transmission | |
| CN111427319A (en) | Intelligent MCC centralized control system of glass factory and control method thereof | |
| CN1929223A (en) | Integrated automation converting station debugging apparatus | |
| CN109917745B (en) | Universal mining explosion-proof PLC control cabinet for shield machine and application | |
| CN201955673U (en) | Intelligent motor control center | |
| CN107203174A (en) | Pumping plant observing and controlling information intelligent terminal based on Internet of Things | |
| CN213276343U (en) | Automatic component signal acquisition and transmission system | |
| CN205001161U (en) | Adopt automatically controlled and monitoring device of water pump of ethernet technique | |
| CN208422100U (en) | A kind of electric energy meter collector with remote failure monitoring function | |
| CN204287933U (en) | The automatically-monitored control system in a kind of Petrochemical | |
| CN201541152U (en) | Intelligent combined power supply control system | |
| CN203456949U (en) | Intelligent assembly cabinet for transformer station circuit breaker | |
| CN214570801U (en) | Urban sewage treatment plant automatic remote monitoring system based on Internet of things | |
| CN210776307U (en) | Distributed control system based on GOOSE communication | |
| CN107463159A (en) | A kind of industrial bus I/O module | |
| CN210605442U (en) | Based on special LORA wireless communication control system of nuclear power station PLC | |
| CN102545067A (en) | Network terminal cabinet system for distributed control system (DCS) instruction | |
| CN111324078A (en) | Power transformer analog quantity on-site module | |
| CN207598467U (en) | A kind of shaft draining precipitation hole automatic control system | |
| CN210348231U (en) | Production transfer chain intelligence control system | |
| CN101762756B (en) | Laser pump-based online monitoring system for power equipment running state | |
| CN201477139U (en) | Online monitoring system for running state of power facility based on laser pumps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |