CN204168003U - A kind of communications adapter for earth leakage protective device - Google Patents
A kind of communications adapter for earth leakage protective device Download PDFInfo
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- CN204168003U CN204168003U CN201420575053.1U CN201420575053U CN204168003U CN 204168003 U CN204168003 U CN 204168003U CN 201420575053 U CN201420575053 U CN 201420575053U CN 204168003 U CN204168003 U CN 204168003U
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- transceiver
- chip microcomputer
- communication terminal
- communications adapter
- protective device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model belongs to electronic technology field, particularly relates to a kind of communications adapter for earth leakage protective device.This communications adapter comprises single-chip microcomputer, memory, real-time clock, uplink communication terminal and downgoing communication terminal, described single-chip microcomputer is provided with two asynchronous serial communication mouths, and be provided with the reset circuit that electric capacity is single-chip microcomputer, described uplink communication terminal is received and dispatched pin respective pin by first of an asynchronous serial communication mouth arranging first transceiver and single-chip microcomputer and is connected, downgoing communication terminal is received and dispatched pin respective pin by second of another asynchronous serial communication mouth of arranging second transceiver and single-chip microcomputer and is connected, the data wire of described memory and the clock line of described real-time clock respectively pin corresponding to single-chip microcomputer are connected.Existing earth leakage protective device communication protocol can be converted to the industry standard " RCD communication protocol " of standard by the utility model, without the need to changing protector, decreases waste.
Description
Technical field
The utility model belongs to electronic technology field, particularly relates to a kind of communications adapter for earth leakage protective device.
Background technology
The safety and reliability of operation of power networks is placed on an important position by power supply department, installs earth leakage protective device and obtains large-area promotion and application as one of effective protection measure ensureing rural power grids safe operation.Along with the needs of informationalized development and construction intelligent grid, to the earth leakage protective device used in net propose intellectuality, can the requirement of communication.Country issues unified industry standard " RCD communication protocol " for this reason, has done specification and unification to communication protocol between earth leakage protective device and distribution transforming acquisition terminal.Before industry standard is issued, the communication protocol of earth leakage protective device that rural power grids run is multifarious is each producer oneself definition; In addition, memory space, the hardware resource also Shortcomings (as lacking real-time clock) of earth leakage protective device.
Industry standard " RCD communication protocol " is completely incompatible with existing earth leakage protective device communication protocol; interface is also not quite similar; once large-scale promotion certainly will will cause scrapping in a large number of earth leakage protective device; cause the huge wasting of resources, therefore how making existing earth leakage protective device meet Industry code requirements is current problem demanding prompt solution.
Summary of the invention
The purpose of this utility model proposes a kind of communications adapter for earth leakage protective device, makes existing earth leakage protective device meet the requirement of industry standard " RCD communication protocol ".
For realizing above-mentioned object, the utility model by the following technical solutions:
A kind of communications adapter for earth leakage protective device, this communications adapter comprises single-chip microcomputer, memory, real-time clock, uplink communication terminal and downgoing communication terminal, described single-chip microcomputer is provided with two asynchronous serial communication mouths, and be provided with the reset circuit that electric capacity is single-chip microcomputer, described uplink communication terminal is received and dispatched pin respective pin by first of an asynchronous serial communication mouth arranging first transceiver and single-chip microcomputer and is connected, downgoing communication terminal is received and dispatched pin respective pin by second of another asynchronous serial communication mouth of arranging second transceiver and single-chip microcomputer and is connected, the data wire of described memory and the clock line of described real-time clock respectively pin corresponding to single-chip microcomputer are connected.
As further improvement, described memory adopts eeprom chip 24C64, and described real-time clock adopts chip SD2403.
As further improvement, described first transceiver and second transceiver adopt 485 driving chip MAX485 respectively.
As further improvement, this communications adapter also comprises transient voltage suppressor, at the A of described first transceiver and second transceiver, B output connects respectively described has transient voltage suppressor and ground connection, the A output of described first transceiver and second transceiver connects power supply respectively by being provided with the 7th resistance, the B output of described first transceiver and second transceiver is respectively by being provided with the 12 grounding through resistance, described first transceiver is connected respectively by being provided with the 9th resistance one end with uplink communication terminal and downgoing communication terminal with the A output of second transceiver, described first transceiver is connected respectively by being provided with the other end of the tenth resistance with uplink communication terminal and downgoing communication terminal with the B output of second transceiver.
As further improvement, this communications adapter also comprises light-emitting diode, and one end of described light-emitting diode is connected with power supply respectively by the first resistance, and the other end connects respectively at the respective pin of single-chip microcomputer.
Existing earth leakage protective device communication protocol can be converted to the industry standard " RCD communication protocol " of standard by this communications adapter by the utility model, without the need to changing protector, decreases waste.
Accompanying drawing explanation
Fig. 1 theory diagram of the present utility model.
Fig. 2 circuit diagram of the present utility model.
Specific embodiments
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
A kind of communications adapter for earth leakage protective device as shown in Figure 1 and 2, this communications adapter comprises single-chip microcomputer U3, light-emitting diode D1, D2, D3, D4, memory U7, real-time clock U5, uplink communication terminal J7 and downgoing communication terminal J8, described memory U7 adopts eeprom chip 24C64, described real-time clock U5 adopts chip SD2403, described single-chip microcomputer U3 is provided with two asynchronous serial communication mouths, and be provided with the reset circuit that electric capacity C1 is single-chip microcomputer U3, described uplink communication terminal J7 receives and dispatches pin RX1 by first of an asynchronous serial communication mouth arranging first transceiver U2 and single-chip microcomputer U3, TX1 respective pin connects, downgoing communication terminal J8 receives and dispatches pin RX2 by second of another asynchronous serial communication mouth of arranging second transceiver U4 and single-chip microcomputer U3, TX2 respective pin connects, the data wire of described memory U7 and the clock line of described real-time clock U5 respectively pin corresponding to single-chip microcomputer U3 are connected, described first transceiver U2 and second transceiver U4 adopts 485 driving chip MAX485 respectively.
In order to prevent broken by lightning, at the A of described first transceiver U2 and second transceiver U4, B output terminals A, B is respectively equipped with transient voltage suppressor D7, D9, D12, D19 ground connection, described first transceiver U2 and the A output terminals A of second transceiver U4 are respectively by being provided with the 7th resistance R7, R15 meets power vd D, the B output B of described first transceiver U2 and second transceiver U4 is respectively by being provided with the 12 resistance R12, R19 ground connection, described first transceiver U2 and the A output terminals A of second transceiver U4 are respectively by being provided with the 9th resistance R9, R16 is connected with one end of uplink communication terminal J7 and downgoing communication terminal J8, the B output B of described first transceiver U2 and second transceiver U4 is respectively by being provided with the tenth resistance R10, R17 is connected with the other end of uplink communication terminal J7 and downgoing communication terminal J8, the 7th wherein said resistance R7, R15 and the 12 resistance R12, R19 are respectively pull down resistor and make 485 signal stabilizations, and the 9th described resistance R9, R16 and the tenth resistance R10, R17 are current-limiting resistance protection transient voltage suppressor D7, D9, D12, D19, described downgoing communication terminal J8 is connected with the communication interface of outside earth leakage protective device, single-chip microcomputer U3 reads earth leakage protective device data by an asynchronous serial communication mouth with the communication protocol of protector, data transaction is become industry standard " RCD communication protocol " data format, be stored in inner RAM, the data needing power down to preserve are kept in memory U7, uplink communication terminal J7 is connected with the communication interface of outside Distribution transformer, and data are sent to outside Distribution transformer with industry standard " RCD communication protocol " data format by an asynchronous serial communication mouth by single-chip microcomputer U3.
Described light-emitting diode D1, D2, D3, one end of D4 respectively by the first resistance R1, R2, R3, R4 is connected with power vd D, and the other end connects respectively at the respective pin of single-chip microcomputer U3, and single-chip microcomputer U3 controls light-emitting diode D1, D2, D3, D4 light on and off instruction communication state.
Claims (5)
1. the communications adapter for earth leakage protective device, it is characterized in that: this communications adapter comprises single-chip microcomputer (U3), memory (U7), real-time clock (U5), uplink communication terminal (J7) and downgoing communication terminal (J8), described single-chip microcomputer (U3) is provided with two asynchronous serial communication mouths, and be provided with the reset circuit that electric capacity (C1) is single-chip microcomputer (U3), described uplink communication terminal (J7) receives and dispatches pin (RX1 by first of an asynchronous serial communication mouth arranging first transceiver (U2) and single-chip microcomputer (U3), TX1) respective pin connects, downgoing communication terminal (J8) receives and dispatches pin (RX2 by second of another asynchronous serial communication mouth of arranging second transceiver (U4) and single-chip microcomputer (U3), TX2) respective pin connects, the data wire of described memory (U7) is connected with single-chip microcomputer (U3) corresponding pin respectively with the clock line of described real-time clock (U5).
2. a kind of communications adapter for earth leakage protective device according to claim 1, is characterized in that: described memory (U7) adopts eeprom chip 24C64, and described real-time clock (U5) adopts chip SD2403.
3. a kind of communications adapter for earth leakage protective device according to claim 1, is characterized in that: described first transceiver (U2) and second transceiver (U4) adopt 485 driving chip MAX485 respectively.
4. a kind of communications adapter for earth leakage protective device according to claim 3, it is characterized in that: this communications adapter also comprises transient voltage suppressor (D7, D9, D12, D19), at the A of described first transceiver (U2) and second transceiver (U4), B output (A, B) described transient voltage suppressor (D7 is met on respectively, D9, D12, and ground connection D19), described first transceiver (U2) and the A output (A) of second transceiver (U4) are respectively by being provided with the 7th resistance (R7, R15) power supply (VDD) is connect, described first transceiver (U2) and the B output (B) of second transceiver (U4) are respectively by being provided with the 12 resistance (R12, R19) ground connection, described first transceiver (U2) and the A output (A) of second transceiver (U4) are respectively by being provided with the 9th resistance (R9, R16) be connected with one end of uplink communication terminal (J7) and downgoing communication terminal (J8), described first transceiver (U2) and the B output (B) of second transceiver (U4) are respectively by being provided with the tenth resistance (R10, R17) be connected with the other end of uplink communication terminal (J7) and downgoing communication terminal (J8).
5. a kind of communications adapter for earth leakage protective device according to claim 3, is characterized in that: this communications adapter also comprises light-emitting diode (D1, D2; D3; D4), described light-emitting diode (D1, D2; D3; D4) one end is respectively by the first resistance (R1, R2, R3; R4) be connected with power supply (VDD), the other end connects respectively at the respective pin of single-chip microcomputer (U3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420575053.1U CN204168003U (en) | 2014-09-30 | 2014-09-30 | A kind of communications adapter for earth leakage protective device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420575053.1U CN204168003U (en) | 2014-09-30 | 2014-09-30 | A kind of communications adapter for earth leakage protective device |
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| CN204168003U true CN204168003U (en) | 2015-02-18 |
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| CN201420575053.1U Active CN204168003U (en) | 2014-09-30 | 2014-09-30 | A kind of communications adapter for earth leakage protective device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253486A (en) * | 2014-09-30 | 2014-12-31 | 杭州天目电力科技有限公司 | Communication adapter |
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2014
- 2014-09-30 CN CN201420575053.1U patent/CN204168003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253486A (en) * | 2014-09-30 | 2014-12-31 | 杭州天目电力科技有限公司 | Communication adapter |
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| GR01 | Patent grant |