CN202471949U - Time calibrating device for voltage monitoring instruments - Google Patents
Time calibrating device for voltage monitoring instruments Download PDFInfo
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- CN202471949U CN202471949U CN2012201166956U CN201220116695U CN202471949U CN 202471949 U CN202471949 U CN 202471949U CN 2012201166956 U CN2012201166956 U CN 2012201166956U CN 201220116695 U CN201220116695 U CN 201220116695U CN 202471949 U CN202471949 U CN 202471949U
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- voltage monitoring
- time
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a time calibrating device for voltage monitoring instruments, and the device comprises a Xilinx field programmable gate array (FPGA) chip, a global position system receiver, a recommended standard (RS) 232 serial port, a displayer and keyboard equipment. The utility model adopts a novel time calibrating system for voltage monitoring instruments based on a Xilinx FPGA embedded platform, utilizes a high-precision Power personal computer (PC) processor as the core and adds a processor local bus (PLB) interface to perfect the function of the core system. Different hardware function modules are arranged around the processor; after the processor slice operation of measured data and further processing by the system, the storing and displaying of data are completed. The utility model can provide a time calibrating device for a plurality of voltage monitoring instruments in a lab or on site and the time calibration is precise. The time calibrating device is applicable to calibration of time of voltage monitoring instruments on various occasions.
Description
Technical field
The utility model relates to a kind of voltage monitoring instrument time calibrating installation, belongs to the power system measuring technical field.
Background technology
Along with the expansion day by day of electric system scale and the automatization level of electrical network improve constantly.Time accurately in Operation of Electric Systems, seem particularly important.Calibration method to voltage monitoring instrument mainly is according to the power industry standard DL 500-2009 of the People's Republic of China (PRC) " voltage monitoring instrument operation technique condition " at present; But the clocking error calibration method that does not have relevant voltage monitoring instrument; Owing to there is not special voltage monitoring instrument time calibrating installation; Existing time calibration method be with voltage monitoring instrument calibrating installation output time as the standard time, adopt the ocular estimate and the time of seized voltage monitoring instrument to compare, the crystal oscillator of calibrating installation standard timer employing long term drift in time in this method; Just there is error in device itself, and the testing person is very big to the influence of verification result.
Summary of the invention
The purpose of the utility model is; There is frequency shift (FS) to existing voltage monitoring instrument calibrating installation joint crystal oscillator, is subject to factor affecting such as temperature, the deficiency that the output time precision is not high; Providing a kind of can experimentize the device of chamber and on-site proving, accurately alignment time to many voltage monitoring instrument times.
The technical scheme of the utility model is that the utility model voltage monitoring instrument time calibrating installation is made up of XILINX fpga chip, GPS receiver, RS232 serial ports, display, keyboard equipment; The GPS receiver connects the IRIG-B decoder module of XILINX fpga chip, and the RS232 serial ports connects the RS232 serial ports controller of XILINX fpga chip, and display and keyboard connect the I/O interface controller of XILINX fpga chip.
XILINX fpga chip embedded system belongs to Harvard's framework, and it comprises PowerPC processor, PLB bus, PLB bus controller, RS232 serial ports controller, IRIG-B decoder module, I/O interface controller, memory controller, data-carrier store, command memory, FLASH storer and RAM storer.
The PowerPC processor realizes that through the difference access of PLB bus realization program and data efficient is carried out in instruction efficiently.The PLB bus is controlled by bus controller, is effective combination of many group signals, realizes that processor and peripherals communicate through signals such as bus address, data and sheet selected control systems.Memory controller provides visit external unit required signal, and this is a kind ofly to visit the peripheral hardware of expansion through bus form, creates and manage other memory device (data-carrier store, command memory, FLASH storer and RAM storer).I/O interface controller supervisory keyboard, display.Further improved the reliability of communication and increased control function, simplified the steering logic of equipment, for the user of equipment provides bigger convenience.The RS232 serial ports controller can be used for various control occasions, and cost performance is higher.The RS232 serial ports controller is the controller that can realize control function through serial ports.Calibrating installation is given controller through the instruction that serial ports sends the specific protocol form, and then comes control peripheral devices or device.Utilize this serial ports controller can serial equipment be formed a simple and easy network, thus the control of the equipment of realization and the transmission of data.The purpose of IRIG-B decoder module is exactly from coded message, to judge the on-time point of second; And the pulse of sending 1PPS with as far as possible little time-delay to the time signal, and be converted into binary-coded decimal and be stored in the fpga chip, pass through interface then; Time encoding is transferred to the CPU of device, accomplish to the time.This demoder can also pass through the LED charactron, shows temporal information, with the correctness of proving time.
The function that the utility model is mainly realized comprise gps time Data Receiving, many seized voltage monitoring instrument time read, time error is relatively calculated, report processing etc.
The utility model is accomplished the description to each functional module with VHDL language; Design with Top Down; At first confirm the main functional modules of demoder, then progressively the design content refinement, specific to each little functional module; Couple together each little functional module at last, accomplish whole functional.Accomplish separately between these functional modules, accomplish function separately separately.
The beneficial effect of the utility model and prior art comparison is; The utility model adopts the novel voltage monitor time verification system based on Xilinx FPGA embedded platform; Utilize high precision PowerPC processor to be core, add the PLB EBI, make the core system perfect in shape and function.Include different hardware capability modules around the processor; Data measured is further handled through system through computing in the processor piece, accomplishes preservation and demonstration to data.Can provide a kind of experimentized the device of chamber and on-site proving, accurately alignment time to many voltage monitoring instrument times.
The utility model is applicable to the calibrating of each occasion to the voltage monitoring instrument time.
Description of drawings
Fig. 1 is a voltage monitoring instrument time calibrating installation principle hardware block diagram;
Fig. 2 is a voltage monitoring instrument time calibrating installation program flow diagram.
Embodiment
The embodiment of the utility model is as shown in Figure 1.
Present embodiment voltage monitoring instrument time calibrating installation is made up of XILINX fpga chip, GPS receiver, RS232 serial ports, display, keyboard equipment; The GPS receiver connects the IRIG-B decoder module of XILINX fpga chip, and the RS232 serial ports connects the RS232 serial ports controller of XILINX fpga chip, and display and keyboard connect the I/O interface controller of XILINX fpga chip.
Memory controller, I/O interface controller, RS232 serial ports controller, IRIG-B decoder module all are the IP kernels of realizing through the VHDL hardware description language, accomplish the control to storer, I/O interface, RS232 serial ports, GPS receiver.
The utility model voltage monitoring instrument time calibrating procedure process flow diagram is as shown in Figure 2.
Voltage monitoring instrument time calibrating installation is gathered the current standard time through the IRIG-B decoder module through the GPS receiving satellite signal in real time, and data are stored.After gps time reads successfully; Device connects seized voltage monitoring instrument through the RS232 serial ports again, gathers many seized voltage monitoring instruments and shows the time, and the standard time of data and storage is compared the error of calculation; Send to display through serial ports, show current verification result.
Claims (2)
1. a voltage monitoring instrument time calibrating installation is characterized in that, said device is made up of XILINX fpga chip, GPS receiver, RS232 serial ports, display, keyboard equipment; The GPS receiver connects the IRIG-B decoder module of XILINX fpga chip, and the RS232 serial ports connects the RS232 serial ports controller of XILINX fpga chip, and display and keyboard connect the I/O interface controller of XILINX fpga chip.
2. voltage monitoring instrument time calibrating installation according to claim 1 is characterized in that, said device is gathered the current standard time through the IRIG-B decoder module through the GPS receiving satellite signal in real time, and data are stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201166956U CN202471949U (en) | 2012-03-26 | 2012-03-26 | Time calibrating device for voltage monitoring instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201166956U CN202471949U (en) | 2012-03-26 | 2012-03-26 | Time calibrating device for voltage monitoring instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471949U true CN202471949U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201166956U Expired - Fee Related CN202471949U (en) | 2012-03-26 | 2012-03-26 | Time calibrating device for voltage monitoring instruments |
Country Status (1)
| Country | Link |
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| CN (1) | CN202471949U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616653A (en) * | 2013-12-06 | 2014-03-05 | 国家电网公司 | System and method for testing clock synchronization and clock precision of power quality monitor terminal |
| CN105763199A (en) * | 2016-04-13 | 2016-07-13 | 云南电网有限责任公司电力科学研究院 | FPGA-based IRIG-B(DC) fast decoding method |
| CN109540525A (en) * | 2018-11-23 | 2019-03-29 | 内蒙航天动力机械测试所 | Based on the self-alignment intelligent calibration system of data collector |
-
2012
- 2012-03-26 CN CN2012201166956U patent/CN202471949U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616653A (en) * | 2013-12-06 | 2014-03-05 | 国家电网公司 | System and method for testing clock synchronization and clock precision of power quality monitor terminal |
| CN103616653B (en) * | 2013-12-06 | 2016-08-17 | 国家电网公司 | System and method are tested with clock accuracy during a kind of electric energy quality monitoring terminal pair |
| CN105763199A (en) * | 2016-04-13 | 2016-07-13 | 云南电网有限责任公司电力科学研究院 | FPGA-based IRIG-B(DC) fast decoding method |
| CN109540525A (en) * | 2018-11-23 | 2019-03-29 | 内蒙航天动力机械测试所 | Based on the self-alignment intelligent calibration system of data collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130221 Address after: 330009 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Patentee after: Jiangxi Electric Power Science Academy Patentee after: State Grid Corporation of China Address before: 330009 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Patentee before: Jiangxi Electric Power Science Academy |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20180326 |