CN203054513U - Novel RTU (remote terminal unit) - Google Patents
Novel RTU (remote terminal unit) Download PDFInfo
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- CN203054513U CN203054513U CN 201320028475 CN201320028475U CN203054513U CN 203054513 U CN203054513 U CN 203054513U CN 201320028475 CN201320028475 CN 201320028475 CN 201320028475 U CN201320028475 U CN 201320028475U CN 203054513 U CN203054513 U CN 203054513U
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- photoelectrical coupler
- digital quantity
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- 238000002955 isolation Methods 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 5
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 15
- 238000010586 diagram Methods 0.000 description 3
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model discloses a novel RTU (remote terminal unit). The RTU comprises a MCU, a digital quantity input unit, a digital quantity output unit, an analog quantity input unit and an analog quantity output unit, wherein the digital quantity input unit, the digital quantity output unit, the analog quantity input unit and the analog quantity output unit are connected with the MCU respectively. In the RTU of the utility model, direct current isolation power supplies and photoelectric couplers are designed in function units of the digital quantity input unit, the digital quantity output unit, the analog quantity input unit, the analog quantity output unit and the like respectively. Once a strong surge impact is encountered, a destruction scope is limited in the function unit and other function units are not influenced so that the RTU can continue working and a purpose of reducing the surge destruction is reached. Independence and stability of each interface communication are increased and the external surge impact can be resisted. Management efficiency of a management department is increased and management cost and operation cost are reduced.
Description
Technical field
The utility model relates to a kind of remote control, specifically a kind of novel RTU.
Background technology
RTU(Remote Terminal Unit, remote control unit) be to finish the hydrology (regimen automatically, water resource) collection of parameter, storage, the equipment of transmission and control, owing to be no lack of motor in the RTU site environment of living in, large-scale electrical power control cabinet, heavy current installations such as ballast resistor, exist various strong electromagnetic, the appearance of thunder-strike phenomenon also is difficult to avoid, these situations easily form surge and inject RTU inside by interface, destroy the circuit of whole RTU, but, existing RTU does not take to reduce the respective handling measure of surge destructiveness, this has just caused parameter acquisition, the information transmission is not prompt enough accurately, control field apparatus that can't be promptly and accurately, even the situation that RTU scraps appears, and influenced the efficiency of management of administrative authority, improved handling cost and operation cost.
The utility model content
At above-mentioned deficiency, the utility model provides a kind of novel RTU, and it not only can resist the destruction of surge, and can lower maintenance cost.
The technical scheme in the invention for solving the technical problem is: a kind of novel RTU, the digital quantity input block that comprises MCU and be connected with MCU respectively, digital quantity output unit, analog input unit and analog quantity output unit, it is characterized in that, described digital quantity input block comprises digital quantity Input Control Element, the first DC-isolation power supply and first photoelectrical coupler, and described first photoelectrical coupler is connected with MCU, digital quantity Input Control Element and the first DC-isolation power supply respectively; Described digital quantity output unit comprises digital quantity output control unit, the second DC-isolation power supply and second photoelectrical coupler, and described second photoelectrical coupler is connected with MCU, digital quantity output control unit and the second DC-isolation power supply respectively; Described analog input unit comprises analog quantity Input Control Element, the 3rd DC-isolation power supply and the 3rd photoelectrical coupler, and described the 3rd photoelectrical coupler is connected with MCU, analog quantity Input Control Element and the 3rd DC-isolation power supply respectively; Described analog quantity output unit comprises analog quantity output control unit, the 4th DC-isolation power supply and the 4th photoelectrical coupler, and described the 4th photoelectrical coupler is connected with MCU, analog quantity output control unit and the 4th DC-isolation power supply respectively.
Preferably, described MCU adopts the LM3S1968 chip of TI company.
Preferably, described DC-isolation power supply adopts the F1212S-2WR2 DC power convertor of MORNSUN company.
Preferably, described first photoelectrical coupler and second photoelectrical coupler all adopt the TLP521 chip of TOSHIBA company.
Preferably, described the 3rd photoelectrical coupler adopts the 6N137 chip of FAIRCHILD company.
Preferably, described the 4th photoelectrical coupler adopts the HCPL-2631 chip of FAIRCHILD company.
The beneficial effects of the utility model are: the digital quantity input block of the utility model RTU, the digital quantity output unit, design respectively in each functional unit such as analog input unit and analog quantity output unit DC-DC DC-isolation power supply and photoelectrical coupler are arranged, DC-DC DC-isolation power supply in each functional unit is only powered to this functional unit, each functional unit carries out the signal transmission by the photoelectrical coupler in this functional unit and outside, in case suffer strong surge impact, limit its damage envelope in this functional unit inside, other functional unit is unaffected, can continue to make RTU work, reach and reduce the purpose that surge destroys.The utility model has not only improved independence and the stability of each road interface communication, the outside surge impact of strong opposing, and help to improve the efficiency of management of administrative authority, reduced handling cost and operation cost.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of digital quantity input block described in the utility model;
Among the figure, 1MCU, 2 digital quantity input blocks, 21 digital quantity Input Control Elements, 22 first DC-isolation power supplys, 23 first photoelectrical couplers, 3 digital quantity output units, 31 digital quantity output control units, 32 second DC-isolation power supplys, 33 second photoelectrical couplers, 4 analog input units, 41 analog quantity Input Control Elements, 42 the 3rd DC-isolation power supplys, 43 the 3rd photoelectrical couplers, 5 analog quantity output units, 51 analog quantity output control units, 52 the 4th DC-isolation power supplys, 53 the 4th photoelectrical couplers, 61 first sensors, 62 second sensors, 63 the 3rd sensors, 64 four-sensors.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in Figure 1, a kind of novel RTU of the present utility model, the digital quantity input block 2 that comprises MCU1 and be connected with MCU1 respectively, digital quantity output unit 3, analog input unit 4 and analog quantity output unit 5, described digital quantity input block 2, digital quantity output unit 3, analog input unit 4 and analog quantity output unit 5 are connected with four-sensor 64 with first sensor 61, second sensor 62, the 3rd sensor 63 respectively.Described digital quantity input block 2 comprises digital quantity Input Control Element 21, the first DC-isolation power supply 22 and first photoelectrical coupler 23, and described first photoelectrical coupler 23 is connected with MCU1, digital quantity Input Control Element 21 and the first DC-isolation power supply 22 respectively; Described digital quantity output unit 3 comprises digital quantity output control unit 31, the second DC-isolation power supply 32 and second photoelectrical coupler 33, and described second photoelectrical coupler 33 is connected with MCU1, digital quantity output control unit 31 and the second DC-isolation power supply 32 respectively; Described analog input unit 4 comprises analog quantity Input Control Element 41, the 3rd DC-isolation power supply 42 and the 3rd photoelectrical coupler 43, and described the 3rd photoelectrical coupler 43 is connected with MCU1, analog quantity Input Control Element 41 and the 3rd DC-isolation power supply 42 respectively; Described analog quantity output unit 5 comprises analog quantity output control unit 51, the 4th DC-isolation power supply 52 and the 4th photoelectrical coupler 53, and described the 4th photoelectrical coupler 53 is connected with MCU1, analog quantity output control unit 51 and the 4th DC-isolation power supply 52 respectively.
Wherein, MCU1 described in the utility model selects the LM3S1968 of TI company for use, and PA, PB, PC, PD are its GPIO port, PA is configured to digital-quantity input interface, PB is configured to digital-quantity output interface, and PC is configured to the analog quantity input interface, and PD is configured to analog output interface circuit; The described first DC-isolation power supply 22, the second DC-isolation power supply 32, the 3rd DC-isolation power supply 42 and the 4th DC-isolation power supply 52 are selected the DC power convertor F1212S-2WR2 chip of MORNSUN company for use, described F1212S-2WR2 chip carries out electrical isolation with input end and output terminal, Vin+, Vin ﹣ are power input, and Vout+, GND are output terminal; First photoelectrical coupler 23, second photoelectrical coupler 33 are selected the TLP521 of TOSHIBA company for use; That the 3rd photoelectrical coupler 43 is selected for use is the 6N137 of FAIRCHILD company; That the 4th photoelectrical coupler 53 is selected for use is the HCPL-2631 of FAIRCHILD company.
As shown in Figure 1, the PA port of described MCU1 links to each other with the output terminal of first photoelectrical coupler 23, the input end of first photoelectrical coupler 23 links to each other with digital quantity Input Control Element 21, digital quantity Input Control Element 21 links to each other with first sensor 61, and the first DC-isolation power supply 22 provides working power for digital quantity input block 2 and first photoelectrical coupler 23; Described digital quantity Input Control Element 21 receives the digital quantity signal of first sensor 61, and send to the input end of first photoelectrical coupler 23 after the digital quantity input signal handled, the PA port of MCU1 obtains signal by the output terminal of first photo-coupler 23, thereby has finished the communication of digital-quantity input interface.
The PB port of described MCU1 links to each other with the input end of second photoelectrical coupler 33, the output terminal of second photoelectrical coupler 33 links to each other with digital quantity output control unit 31, digital quantity output control unit 31 links to each other with second sensor 62, and the second DC-isolation power supply 32 provides working power for digital quantity output unit 3 and second photoelectrical coupler 33; Described second photoelectrical coupler 33 receives digital quantity signal from the PB port of MCU1, the digital quantity output control unit receives the digital quantity signal from second photoelectrical coupler 33, and send to second sensor 62 after the digital quantity output signal handled, thereby finished the communication of digital-quantity output interface.
The pc port of described MCU1 links to each other with the output terminal of the 3rd photoelectrical coupler 43, the input end of the 3rd photoelectrical coupler 43 links to each other with analog quantity Input Control Element 41, analog quantity Input Control Element 41 links to each other with the 3rd sensor 63, and the 3rd DC-isolation power supply 42 provides working power for analog input unit 4 and the 3rd photoelectrical coupler 43; Described analog quantity Input Control Element 41 receives the analog signals of the 3rd sensor 63, and the analog quantity input signal handled be converted into the input end that sends to the 3rd photoelectrical coupler 43 behind the digital quantity, the PB port of MCU1 obtains digital quantity signal by the output terminal of the 3rd photo-coupler 43, thereby has finished the communication of analog quantity input interface.
The PD port of described MCU1 links to each other with the input end of the 4th photoelectrical coupler 53, the 4th photoelectrical coupler 53 output terminals link to each other with analog quantity output control unit 51, analog quantity output control unit 51 links to each other with four-sensor 64, and the 4th DC-isolation power supply 52 provides working power for analog quantity output unit 5 and the 4th photoelectrical coupler 53; Described the 4th photoelectrical coupler 53 receives digital quantity signal from the PD port of MCU1, analog quantity output control unit 51 receives the digital quantity signal of the 4th photo-coupler 53, and the digital quantity output signal handled send to four-sensor 64 after being converted into analog quantity, thereby finished the communication of analog output interface circuit.
Fig. 2 is the circuit theory diagrams of digital quantity input block described in the utility model.As shown in Figure 2, U1 is LM3S1968, and its GPIO port PA1 links to each other with 4 pin of photoelectrical coupler U3; 3 pin of photoelectrical coupler U3 meet GND1, U2 is power isolation module F1212S-2WR2, the Vin+ pin links to each other with diode D1 negative pole, the D1 positive pole links to each other with 12V input power supply, the Vin-pin meets GND1, between the GND of F1212S-2WR2 pin and Vout+ pin, be connected capacitor C 1, C2, its parameter is respectively 16V/0.1uf, 16V/220uF, the Vout+ pin links to each other with diode D2 is anodal, the D2 negative pole links to each other with an end of resistance R 1, the other end of resistance R 1 links to each other with 1 pin of photoelectrical coupler U3, and 2 pin of photoelectrical coupler U3 link to each other with the digital quantity Input Control Element, and the power supply of digital quantity Input Control Element is provided by Vout+ and the GND pin of F1212S-2WR2.Described digital quantity Input Control Element links to each other with sensor, receives the digital quantity input from sensor.
Be that example illustrates the concrete course of work of the present utility model below in conjunction with Fig. 2 with the digital quantity input communication.When the digital-quantity input interface of RTU is subjected to surge impact; because the isolation of photoelectrical coupler; its energy can't arrive the MCU of RTU; protected the circuit behind the photoelectrical coupler effectively; because digital telecommunication circuit is the independent current source power supply, other circuit parts of its power supply and RTU have been realized electrical isolation, and its surge impact energy can't arrive other functional units of RTU by power supply; make the destruction of surge impact be confined to this functional unit inside, reduced destructiveness effectively.
Except structure described in the utility model, all the other are prior art.
The above is preferred implementation of the present utility model; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also are regarded as protection domain of the present utility model.
Claims (6)
1. novel RTU, the digital quantity input block that comprises MCU and be connected with MCU respectively, digital quantity output unit, analog input unit and analog quantity output unit, it is characterized in that, described digital quantity input block comprises digital quantity Input Control Element, the first DC-isolation power supply and first photoelectrical coupler, and described first photoelectrical coupler is connected with MCU, digital quantity Input Control Element and the first DC-isolation power supply respectively; Described digital quantity output unit comprises digital quantity output control unit, the second DC-isolation power supply and second photoelectrical coupler, and described second photoelectrical coupler is connected with MCU, digital quantity output control unit and the second DC-isolation power supply respectively; Described analog input unit comprises analog quantity Input Control Element, the 3rd DC-isolation power supply and the 3rd photoelectrical coupler, and described the 3rd photoelectrical coupler is connected with MCU, analog quantity Input Control Element and the 3rd DC-isolation power supply respectively; Described analog quantity output unit comprises analog quantity output control unit, the 4th DC-isolation power supply and the 4th photoelectrical coupler, and described the 4th photoelectrical coupler is connected with MCU, analog quantity output control unit and the 4th DC-isolation power supply respectively.
2. a kind of novel RTU according to claim 1 is characterized in that, described MCU adopts the LM3S1968 chip of TI company.
3. a kind of novel RTU according to claim 1 is characterized in that, described DC-isolation power supply adopts the F1212S-2WR2 DC power convertor of MORNSUN company.
4. a kind of novel RTU according to claim 1 is characterized in that, described first photoelectrical coupler and second photoelectrical coupler all adopt the TLP521 chip of TOSHIBA company.
5. a kind of novel RTU according to claim 1 is characterized in that, described the 3rd photoelectrical coupler adopts the 6N137 chip of FAIRCHILD company.
6. a kind of novel RTU according to claim 1 is characterized in that, described the 4th photoelectrical coupler adopts the HCPL-2631 chip of FAIRCHILD company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320028475 CN203054513U (en) | 2013-01-18 | 2013-01-18 | Novel RTU (remote terminal unit) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320028475 CN203054513U (en) | 2013-01-18 | 2013-01-18 | Novel RTU (remote terminal unit) |
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| CN203054513U true CN203054513U (en) | 2013-07-10 |
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| CN 201320028475 Expired - Fee Related CN203054513U (en) | 2013-01-18 | 2013-01-18 | Novel RTU (remote terminal unit) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116300A (en) * | 2013-01-18 | 2013-05-22 | 山东三龙智能技术有限公司 | Novel remote terminal unit (RTU) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116300A (en) * | 2013-01-18 | 2013-05-22 | 山东三龙智能技术有限公司 | Novel remote terminal unit (RTU) |
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