CN204215220U - A kind of Direct Current Power Supervise Control System based on PLC - Google Patents
A kind of Direct Current Power Supervise Control System based on PLC Download PDFInfo
- Publication number
- CN204215220U CN204215220U CN201420665567.6U CN201420665567U CN204215220U CN 204215220 U CN204215220 U CN 204215220U CN 201420665567 U CN201420665567 U CN 201420665567U CN 204215220 U CN204215220 U CN 204215220U
- Authority
- CN
- China
- Prior art keywords
- plc
- control system
- peripheral circuit
- voltage
- circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a kind of Direct Current Power Supervise Control System based on PLC, comprise control loop and peripheral circuit; The AC power that control loop controls primarily of programmable controller PLC and voltage, current sampling system are formed, and peripheral circuit mainly comprises insulating monitoring function, flash system, relay control system and sound warning system and controls.The utility model system architecture is simple, use PLC as main control unit, reliability is high, antijamming capability is strong, and PLC inside adopts modular construction, and integration degree is high, install simple, easy to maintenance, voltage, current sampling system use Hall element, have that precision is high, good linearity, bandwidth, overload capacity damage the many advantages such as circuit-under-test by force and not.
Description
Technical field
The utility model relates to a kind of supervisory system, and specifically a kind of structure is simple, uses PLC as the Direct Current Power Supervise Control System of main control unit.
Background technology
Along with Automation of Electric Systems, computer-controlled development, the raising that on-the-spot operation and maintenance requires, new requirement be it is also proposed to DC power supply apparatus, method for supervising many employings single-chip microcomputer of current direct supply and peripheral circuit composition thereof, but monolithic processor control system many employings dispersed texture of current utilization, each monitoring original paper distributing connects, this monitor mode needs the CPU of greater number, and communication program is complicated, and anti-interference is poor, rate of false alarm is high, and system response speed is slow.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, uses PLC as the Direct Current Power Supervise Control System of main control unit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of Direct Current Power Supervise Control System based on PLC, comprise control loop and peripheral circuit, it is characterized in that, the AC power that described control loop controls primarily of programmable controller PLC and voltage, current sampling system is formed, air-break one end connects power supply VCC, other end connection transformer input end, the output terminal of transformer connects the input end of programmable controller PLC and rectification module, the output terminal of rectification module connects the input end of wave filter, the output terminal of wave filter connects the positive pole of current sample original paper and check diode T1, the negative pole access load circuit of check diode T1, voltage, current sampling system structure is identical, be symmetric, described peripheral circuit mainly comprises insulating monitoring function, flash system, relay control system and sound warning system and controls, peripheral circuit is the work in every coordinating and improve direct supply under the control of control loop, and peripheral circuit is all connected on programmable controller PLC,
As further scheme of the present utility model: described rectifier is silicon controlled rectifier SCR, filtering circuit is LC type filtering circuit.
As further scheme of the present utility model: described voltage, current signal sampling original paper all uses Hall element.
Compared with prior art, the beneficial effects of the utility model are: system architecture is simple, use PLC as main control unit, reliability is high, antijamming capability is strong, all I/O mouths all adopt Phototube Coupling, effectively make internal circuit and external isolation, its each module all adopts shielding measure, adopt Switching Power Supply of good performance, there is self-diagnostic function, PLC inside adopts modular construction, integration degree is high, install simple, easy to maintenance, voltage, current sampling system uses Hall element, there is precision high, good linearity, bandwidth, overload capacity damages the many advantages such as circuit-under-test by force and not.
Accompanying drawing explanation
Fig. 1 is the Direct Current Power Supervise Control System schematic diagram based on PLC.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of Direct Current Power Supervise Control System based on PLC, comprise control loop and peripheral circuit, it is characterized in that, the AC power that described control loop controls primarily of programmable controller PLC and voltage, current sampling system is formed, air-break one end connects power supply VCC, other end connection transformer input end, the output terminal of transformer connects the input end of programmable controller PLC and rectification module, the output terminal of rectification module connects the input end of wave filter, the output terminal of wave filter connects the positive pole of current sample original paper and check diode T1, the negative pole access load circuit of check diode T1, voltage, current sampling system structure is identical, be symmetric, described peripheral circuit mainly comprises insulating monitoring function, flash system, relay control system and sound warning system and controls, peripheral circuit is the work in every coordinating and improve direct supply under the control of control loop, and peripheral circuit is all connected on programmable controller PLC,
Silicon controlled rectifier SCR, filtering circuit are LC type filtering circuit, and voltage, current signal sampling original paper all uses Hall element.
Principle of work of the present utility model is: AC power is through transformer pressure-reducing, isolation, in the silicon controlled rectifier SCR of front end, input control loop, before entering sampling circuit, because a large amount of ac high frequency compositions is contained in loop after rectification, directly sampling is entered if not treated, sampled value instability very can be caused, and finally cannot realize controlling functions.The filtering circuit of LC was installed like this additional before sampling circuit, before entering load, to cause that direct supply is counter to be sent after dead electricity for avoiding exchanging, make the mistake control, one check diode is set in the front end of load, voltage, the sampling of electric current is all realized by Hall element, output due to Hall element is all magnitudes of current, and the input of PLC can only accept magnitude of voltage, therefore resistance is passed through at the output M end of Hall element, the wave filter of electric capacity composition, change the magnitude of current into voltage, and then be input to PLC process, the signal of peripheral components to programmable controller PLC process transmits and responds.
Claims (3)
1. the Direct Current Power Supervise Control System based on PLC, comprise control loop and peripheral circuit, it is characterized in that, the AC power that described control loop controls primarily of programmable controller PLC and voltage, current sampling system is formed, air-break one end connects power supply VCC, the other end connection transformer input end of air-break, the output terminal of transformer connects the input end of programmable controller PLC and rectification module, the output terminal of rectification module connects the input end of wave filter, the output terminal of wave filter connects the positive pole of current sample original paper and check diode T1, the negative pole access load circuit of check diode T1, voltage, current sampling system structure is identical, be symmetric, described peripheral circuit mainly comprises insulating monitoring function, flash system, relay control system and sound warning system and controls, peripheral circuit is the work in every coordinating and improve direct supply under the control of control loop, and peripheral circuit is all connected on programmable controller PLC.
2. a kind of Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described rectification circuit is silicon controlled rectifier SCR, filtering circuit is LC type filtering circuit.
3. a kind of Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described voltage, current signal sampling original paper all uses Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665567.6U CN204215220U (en) | 2014-11-10 | 2014-11-10 | A kind of Direct Current Power Supervise Control System based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665567.6U CN204215220U (en) | 2014-11-10 | 2014-11-10 | A kind of Direct Current Power Supervise Control System based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215220U true CN204215220U (en) | 2015-03-18 |
Family
ID=52983876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665567.6U Expired - Fee Related CN204215220U (en) | 2014-11-10 | 2014-11-10 | A kind of Direct Current Power Supervise Control System based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204215220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874094A (en) * | 2018-09-04 | 2020-03-10 | 西门子（中国）有限公司 | Detection device and detection system of soft starter |
-
2014
- 2014-11-10 CN CN201420665567.6U patent/CN204215220U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874094A (en) * | 2018-09-04 | 2020-03-10 | 西门子（中国）有限公司 | Detection device and detection system of soft starter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102916640B (en) | A kind of diesel locomotive phase-control excitation control device and method thereof | |
| CN204595181U (en) | Based on the device of TMS320F2812 DC Electronic Loads | |
| CN203589836U (en) | Intelligent control apparatus of starting signal for diesel generating set | |
| CN204215220U (en) | A kind of Direct Current Power Supervise Control System based on PLC | |
| CN203871840U (en) | Programmable, safe, energy-saving leakage protector | |
| CN204479652U (en) | A kind of three-phase multifunctional electrical energy meter with residual current protecting function | |
| CN202276135U (en) | Comprehensive protection controller for wireless intelligent motor | |
| CN104142648A (en) | Management and control terminal of urban rail traffic low-voltage power distribution system | |
| CN103095210A (en) | Three-phase motor integrated controller | |
| CN203027186U (en) | Three-phase motor integration controller | |
| CN202997699U (en) | Intelligent breaker controller | |
| CN201402973Y (en) | Protective device for power supply lines | |
| CN203588022U (en) | Isolating switch intelligent controller | |
| CN202444272U (en) | Intelligent low-voltage power capacitor | |
| CN105425697A (en) | Dry desulfurization waste gas treatment facility monitoring terminal | |
| CN206193126U (en) | Management system is optimized to electric energy | |
| CN104638758B (en) | Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator | |
| CN205265249U (en) | A tractor serves several purposes middle and low voltage overload protection device | |
| CN202798087U (en) | Zero-loss photovoltaic output device | |
| CN204044567U (en) | A kind of urban track traffic low-voltage distribution system control terminal | |
| CN202475360U (en) | Adaptive controller for three-phase asynchronous motor | |
| CN202931029U (en) | Intelligent monitoring terminal for distribution transformer | |
| CN203942336U (en) | A kind of intelligent controller for low-voltage intelligent circuit breaker | |
| CN203967758U (en) | A kind of reactive power compensation system with temperature acquisition function | |
| CN218829252U (en) | Intelligent monitoring device for box-type substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |