CN202353571U - Special 230MHz Mobitex master-slave redundancy wireless data terminal for power - Google Patents
Special 230MHz Mobitex master-slave redundancy wireless data terminal for power Download PDFInfo
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- CN202353571U CN202353571U CN2011204245368U CN201120424536U CN202353571U CN 202353571 U CN202353571 U CN 202353571U CN 2011204245368 U CN2011204245368 U CN 2011204245368U CN 201120424536 U CN201120424536 U CN 201120424536U CN 202353571 U CN202353571 U CN 202353571U
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- 238000004891 communication Methods 0.000 claims abstract description 42
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- 230000005622 photoelectricity Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 14
- 238000007726 management method Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000013507 mapping Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S40/126—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 wireless data transmission
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Abstract
The utility model relates to the technical field of power wireless data terminals, in particular to a special 230MHz Mobitex master-slave redundancy wireless data terminal for power. The special 230MHz Mobitex master-slave redundancy wireless data terminal is characterized by comprising an ARM main processor, a baseband processing DSP (Digital Signal Processing) chip I, a baseband processing DSP chip II, a radio frequency modulator-demodulator I, a radio frequency modulator-demodulator II, a channel selecting unit, a transmitting module, a receiving module and an MIM02*2 antenna, wherein the ARM main processor, the baseband processing DSP chip I and the baseband processing DSP chip II form a master-slave structure; and the baseband processing DSP chip I is the backup of the baseband processing DSP chip II, and the baseband processing DSP chip II also can be taken as the backup of the baseband processing DSP chip I. Compared with the prior art, the terminal provided by the utility model has the advantage that based on 230MHz frequency band resources of a Mobitex opened protocol stack and a power system, the upgrade and the reconstruction the 230MHz data radio station and 800MHzMobitex wireless communication system of the power system are facilitated.
Description
Technical field
The utility model relates to the electric power technical field of wireless data, is specifically related to the special-purpose 230MHz Mobitex of a kind of electric power principal and subordinate redundant wireless data terminal.
Background technology
At present; The wireless telecommunications frequency that China's power load management system is used is in 223～231MHz frequency range, and power load management system is built up the communication network that covers national most of areas in this frequency range, but because the intrinsic shortcoming of 230MHz data radio station itself; Make network not have intelligent network management function; Can only take main website calling and polling communication mode, traffic rate is low, network capacity is limited, causes frequency of utilization and efficient not high.
Mobitex unites the wireless arrowband cellular network technologies of developing for the business data collection communication by many companies such as Ericsson, is responsible for keeping its opening by Mobitex TCA (MOA), and offers help for new operator.The whole world has hundreds of companies being engaged in the exploitation relevant with Mobitex, development and production at present; A plurality of countries in the world; The Mobitex network is all providing service for a large amount of clients; The thousands of kinds of different demands of using and can satisfy each user from the large-tonnage product of leading hardware and software manufacturer; Had 400M, 800M, 900M frequency range equipment, wherein the 800MMobitex wireless data service in Hebei, ground pilot operations such as Liaoning, Jiangsu, Shanghai, Beijing, ruuning situation is good.
Summary of the invention
The purpose of the utility model provides the special-purpose 230MHz Mobitex of a kind of electric power principal and subordinate redundant wireless data terminal; Open protocol based on Mobitex; The equipment of realizing the existing 230MHz frequency range of electric power system inserts the Mobitex wireless network; Can directly utilize the existing resource of frequency range, remedy the deficiency of 230MHz data radio station, promote power marketing load management level and power distribution automation level.
For solving the problems of the technologies described above, technical scheme of the present invention is:
The special-purpose 230MHz Mobitex of a kind of electric power principal and subordinate redundant wireless data terminal; Comprise primary processor, Base-Band Processing dsp chip one, Base-Band Processing dsp chip two, radio modem one, radio modem two, channel selecting unit, transmitter module, receiver module and radio-frequency antenna; Primary processor is connected with debug i/f circuit with Base-Band Processing dsp chip one, Base-Band Processing dsp chip two, channel selecting unit, transmitter module, FLASH memory, status display circuit respectively; Primary processor also is connected with data-interface with the data-interface protective circuit successively; Base-Band Processing dsp chip one links to each other with the channel selecting unit with radio modem one successively; Base-Band Processing dsp chip two links to each other with the channel selecting unit with radio modem two successively; Said channel selecting unit also links to each other with receiver module with transmitter module respectively; Transmitter module is connected with radio-frequency antenna respectively with receiver module; The Base-Band Processing dsp chip one of said primary processor and 230MHz Mobitex, Base-Band Processing dsp chip two constitute the MS master-slave system configuration, and Base-Band Processing dsp chip one backups each other according to the design of duplication redundancy Redundancy concept with radio modem one Base-Band Processing communication unit one that constitutes and the Base-Band Processing communication unit two that Base-Band Processing dsp chip two and radio modem two constitute.
Said primary processor is based on ARM1176JZF-S kernel and (SuSE) Linux OS.
Said Base-Band Processing dsp chip one is the C55X family chip with Base-Band Processing dsp chip two.
Said radio modem one and radio modem two 15 pairs of duplexing frequencies and ten unit frequencies based on the special-purpose 230MHz frequency range of electric power; Can realize 6.25kHz, 12.5kHz, 18.75kHz and four kinds of adjustable frequency width of 25kHz, respective communication speed is respectively 1.2kbps, 2.4kbps, 4.8kbps, 9.6kbps, 19.2kbps.
Said channel selecting element circuit is based on electronic switch chip CD4066 chip.
Said radio-frequency antenna is a MIMO 2*2 antenna.
Said data-interface protective circuit is isolated based on photoelectricity and the design of ESD antistatic.
Said data-interface provides RJ45 interface, USB interface and UART interface simultaneously.
Said transmitter module is the synthetic radiating circuit of the power of the maximum power adjustable double power amplifier that can reach 25W.
Compared with prior art, the beneficial effect of the utility model is:
1) is based on existing 230MHz wireless digital broadcasting station system and 800MHz Mobitex wireless communication system,, meets China's electric power system data transmission feature based on the Mobitex open protocol stack and the existing 230MHz resource of frequency range of electric power system;
2) it is blank to fill up the research of 230MHz Mobitex wireless communication system, helps the data radio station wireless communication system of the existing 230MHz of electric power system and the upgrading of 800MHzMobitex wireless communication system.
3) break through the restriction that 230MHz data radio station wireless system and 800MHz Mobitex wireless communication system have only 25KHz frequency bandwidth, realized four kinds of Frequency Adjustable point bandwidths and respective communication speed.
4) on the basis of single electric power terminal product of existing capability and wireless communication module; Power business and communication terminal are carried out integrated design; For distribution and electricity consumption marketing automation production enterprise provide the electric power terminal product support platform of high-performance, low cost, integrated level height and technical grade, satisfy the demand of power system load management and distribution transformer monitoring aspect.
Description of drawings
Fig. 1 is the hardware configuration sketch map of the utility model embodiment;
Fig. 2 is the FDD duplex mode multicarrier spectrogram of the utility model embodiment;
Fig. 3 is that the physical layer descending of the embodiment of the invention transmits and receives the communication structure sketch map;
Fig. 4 is the up communication structure sketch map that transmits and receives of the physical layer of the embodiment of the invention;
Fig. 5 is the software flow structural representation of the utility model embodiment;
Fig. 6 is the system logic structure sketch map of the utility model embodiment.
Embodiment
Be described further below in conjunction with the embodiment of accompanying drawing the utility model:
Like Fig. 1; It is the hardware configuration sketch map of the special-purpose 230MHz Mobitex of a kind of electric power of the utility model principal and subordinate redundant wireless data terminal embodiment; Comprise primary processor 300, Base-Band Processing dsp chip 1, Base-Band Processing dsp chip 2 302, radio modem 1, radio modem 2 304, channel selecting unit 305, transmitter module 306, receiver module 307 and radio-frequency antenna 308; Primary processor 300 is connected with Base-Band Processing dsp chip 1, Base-Band Processing dsp chip 2 302, channel selecting unit 305, transmitter module 306, FLASH memory 309, status display circuit and debug i/f circuit 311 respectively; Primary processor 300 also is connected with data-interface 314 with data-interface protective circuit 313 successively; Base-Band Processing dsp chip 1 links to each other with channel selecting unit 305 with radio modem 1 successively; Base-Band Processing dsp chip 2 302 links to each other with channel selecting unit 305 with radio modem 2 304 successively; Said channel selecting unit 305 also links to each other with receiver module 307 with transmitter module 306 respectively; Transmitter module 306 is connected with radio-frequency antenna 308 respectively with receiver module 307; Primary processor 300 constitutes the MS master-slave system configuration with Base-Band Processing dsp chip 1, the Base-Band Processing dsp chip 2 302 of 230MHz Mobitex; Base-Band Processing dsp chip 1 backups each other according to the design of duplication redundancy Redundancy concept with radio modem 1 Base-Band Processing communication unit one that constitutes and the Base-Band Processing communication unit two that Base-Band Processing dsp chip 2 302 and radio modem 2 304 constitute, and this terminal is by two-way voltage stabilizing and monitoring means 310 power supplies.
Among the embodiment; Primary processor 300 is realized the dispatching management to multitasks such as Base-Band Processing dsp chip 1, Base-Band Processing dsp chip 2 302, radio modem 1, radio modem 2 304, channel selecting unit 305, transmitter module 306, two-way voltage stabilizing and monitoring means 310, FLASH memory 309 and debug i/f circuits 311 based on ARM1176JZF-S kernel and (SuSE) Linux OS through bus.
Base-Band Processing dsp chip 1, Base-Band Processing dsp chip 2 302 adopt the C55X family chip of American TI Company; Being used to carry out signal baseband handles; Software wireless electrical characteristics based on DSP; The adaptive tracing signal changes, and realizes the baseband modulation of signal and installation and the parsing that demodulation, equilibrium and filtering, bandwidth are selected and abideed by the MPAK bag of Mobitex agreement.Its modulation system is GMSK, and the baseband signal frequency deviation can be made as 1kHz, 2kHz, 3kHz, 4kHz and 5kHz.As separate system, carry out information exchange through the SPI communication interface between dsp chip and the primary processor, information format is divided into command format and data format, and default conditions are command format.The use validity of two mutually redundant Base-Band Processing dsp chips 1 and Base-Band Processing dsp chip 2 302 is by primary processor 300 controls.
Channel selecting unit 305 circuit are based on electronic switch chip CD4066 chip; Switching frequency can reach 100kHz; Specify a CPIO pin of primary processor to link to each other, by the control signal realization channel selecting of primary processor output with the channel selecting enable signal of electronic switch chip CD4066 chip.
Radio-frequency antenna 308 is a MIMO 2*2 antenna, based on the intelligent signal transmission technology of quadrature modulation demodulation, adopts 2*2 smart antenna array element circuit, improves the signal transmission range and accepts sensitivity.
Data-interface protective circuit 313 is isolated based on photoelectricity and the design of ESD antistatic, has strengthened the reliability and stability of interface, and data-interface 314 provides RJ45 interface, USB interface and UART interface simultaneously, can be connected flexibly through the corresponding interface with other equipment.
Two-way voltage stabilizing and monitoring means 310 provide the output of two-way+5v/1A direct current, monitor power supply status in real time when power supply and load abnormal, produce fault alarm information, and self-protecting, Switching power, guarantee system's normal power supply, strengthen power supply reliability.
Transmitter module 306 is the synthetic radiating circuits of the power of the maximum power adjustable double power amplifier that can reach 25W; Can reach the 25W performance characteristics according to adjustable principle of radio signal power and existing 230MHz data radio station devices communicating power; Based on the high-power synthetic two high-frequency amplifier circuits that with the line transformer are the basis; The whole thin-film package circuit that adopts, circuit performance is good, reliability is high, size is little, in light weight, good heat dissipation, low, the low price of loss.
FLASH memory module type can be the memory of OneNANDFlash, NORFlash type; Capacity is 32MB to the maximum; Be used for stored program and a large amount of image data, and these data are inquired about as requested, revise, deleted or add, can the buffer memory ROMPaq; FLASH is all open towards power consumer, is convenient to secondary development.
Debug i/f circuit 311 provides a RJ45 interface, and the realization program is downloaded and state is exported functions such as inquiry.
Status display circuit 312 is used for any one or various states below the indication: power supply status, network state, communications status, signal condition.
Receiver module 307 amplifies and filter circuit based on two-stage high frequency small-signal, realizes the linear amplification of useful signal and the filtering of noise.
Like Fig. 2 is the FDD duplex mode multicarrier spectrogram of the utility model embodiment; Radio modem 1 and radio modem 2 304; Be used to carry out the processing such as vibration, mixing, modulation of signal; Can work in the special-purpose 15 pairs of duplexing frequencies of electric power and ten single power frequency points; Break through the restriction that data radio station wireless system and 800MHz Mobitex wireless communication system have only 25KHz frequency bandwidth, realized 6.25kHz, 12.5kHz, 18.75kHz and four kinds of adjustable frequency width of 25kHz.Particularly, be a subcarrier with the 6.25kHz bandwidth, whole 25kHz frequency bandwidth can be divided into four groups of subcarriers, and numbering is respectively 0 work song carrier wave, 1 work song carrier wave, 2 work song carrier waves, 3 work song carrier waves.According to information data amount, the chooser number of carriers improves communication efficiency flexibly when communication, and respective communication speed is respectively 1.2kbps, 2.4kbps, 4.8kbps, 9.6kbps, 19.2kbps.
Like Fig. 3; Be that embodiment of the invention physical layer descending transmits and receives the communication structure sketch map, structure comprises base station 501, coding 502, interweaves 503, modulation 504, carrier set mapping 505,2*2 antenna emission 506,2*2 antenna receive 507, carrier set is separated mapping 508, demodulation 509, decoding 510, deinterleaving 511, terminal 512 realize in order.
Like Fig. 4; Be the up communication structure sketch map that transmits and receives of embodiment of the invention physical layer, structure comprises base station 601, coding 602, interweaves 603, modulation 604, carrier set mapping 605,2*2 antenna emission 606,2*2 antenna receive 607, carrier set is separated mapping 608, demodulation 609, decoding 610, deinterleaving 611, terminal 612 realize in order.
Like Fig. 5, be the software flow pattern of the utility model embodiment, may further comprise the steps:
Step 801, the terminal powers on, calling system initialization function Initial_sys (), if the initialization system parameter unsuccessful then calling system soft-off function Power_off (), restarts after the terminal is resetted;
Step 802 is called endpoint registration function G et_Mobitex_RSSI (), scanning band; Obtain the local signal wireless network signal strength,, connect base station and registration terminal information with base station synchronization; If unsuccessful then calling system soft-off function Power_off (), after being resetted, the terminal restarts;
Step 803; Call data communication mode function C md_data_model (), the command communication mode switch that the terminal is given tacit consent to arrives data communication mode, so that accept and send communication data; If unsuccessful then calling system soft-off function Power_off (), after being resetted, the terminal restarts;
Step 804 starts main thread Cmain::svc, realizes the scheduling and the management of system, if unsuccessful then calling system soft-off function Power_off (), restarts after the terminal is resetted;
Step 805 is launched Socket and is intercepted, and judges whether local communication interface has data transmit-receive, then calls Com_socket_local () function if having, and carries out data transmit-receive, if unsuccessful then foundation once more links transmitting-receiving again;
Step 806 is launched Socket and is intercepted, and judges whether wireless communication interface has data transmit-receive, then calls Com_socket_radio () function if having, and carries out data transmit-receive, if unsuccessful then foundation once more links transmitting-receiving again;
Step 807, main thread Cmain::svc does not withdraw from, and system continues operation, withdraws from if wait for main thread Cmain::svc, and calling system soft-off function Power_off () then restarts after the terminal is resetted;
Like Fig. 6; It is the system logic structure sketch map of the utility model embodiment; The special-purpose 230MHz Mobitex of this electric power principal and subordinate redundant wireless data communication system is made up of several parts such as the special-purpose 230MHz Mobitex of electric power terminal, base station, prepositive communication computer, Electric Application service center and wireless network tube hubs; Wherein, the wireless network tube hub is responsible for setting, monitoring, the execution network management function to whole network; Prepositive communication computer executive communication routing function guarantees the network internal reliable information transmission, and base station and 230MHz Mobitex terminal are followed the Mobitex wireless communication protocol and carried out radio communication based on the 230MHz frequency.
Claims (10)
1. the special-purpose 230MHz Mobitex of electric power principal and subordinate redundant wireless data terminal; It is characterized in that; Comprise primary processor, Base-Band Processing dsp chip one, Base-Band Processing dsp chip two, radio modem one, radio modem two, channel selecting unit, transmitter module, receiver module and radio-frequency antenna; Primary processor is connected with debug i/f circuit with Base-Band Processing dsp chip one, Base-Band Processing dsp chip two, channel selecting unit, transmitter module, FLASH memory, status display circuit respectively; Primary processor also is connected with data-interface with the data-interface protective circuit successively; Base-Band Processing dsp chip one links to each other with the channel selecting unit with radio modem one successively; Base-Band Processing dsp chip two links to each other with the channel selecting unit with radio modem two successively; Said channel selecting unit also links to each other with receiver module with transmitter module respectively; Transmitter module is connected with radio-frequency antenna respectively with receiver module; The Base-Band Processing dsp chip one of said primary processor and 230MHz Mobitex, Base-Band Processing dsp chip two constitute the MS master-slave system configuration, and the Base-Band Processing communication unit one that Base-Band Processing dsp chip and radio modem one constitute backups each other according to the design of duplication redundancy Redundancy concept with the Base-Band Processing communication unit two that Base-Band Processing dsp chip two and radio modem two constitute.
2. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 1 principal and subordinate redundant wireless data terminal is characterized in that said primary processor is based on ARM1176JZF-S kernel and (SuSE) Linux OS.
3. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 2 principal and subordinate redundant wireless data terminal is characterized in that said Base-Band Processing dsp chip one is the C55X family chip with Base-Band Processing dsp chip two.
4. according to claim 1 or the special-purpose 230MHz Mobitex of 2 or 3 described a kind of electric power principal and subordinate redundant wireless data terminal; It is characterized in that; Said radio modem one and radio modem two 15 pairs of duplexing frequencies and ten unit frequencies based on the special-purpose 230MHz frequency range of electric power; Can realize 6.25kHz, 12.5kHz, 18.75kHz and four kinds of adjustable frequency width of 25kHz, respective communication speed is respectively 1.2kbps, 2.4kbps, 4.8kbps, 9.6kbps, 19.2kbps.
5. according to claim 1 or the special-purpose 230MHz Mobitex of 2 or 3 described a kind of electric power principal and subordinate redundant wireless data terminal, it is characterized in that said channel selecting element circuit is based on electronic switch chip CD4066 chip.
6. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 4 principal and subordinate redundant wireless data terminal is characterized in that said channel selecting element circuit is based on electronic switch chip CD4066 chip.
7. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 5 principal and subordinate redundant wireless data terminal is characterized in that said radio-frequency antenna is a MIMO 2*2 antenna.
8. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 5 principal and subordinate redundant wireless data terminal is characterized in that said data-interface protective circuit is isolated based on photoelectricity and the design of ESD antistatic.
9. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 5 principal and subordinate redundant wireless data terminal is characterized in that said data-interface provides RJ45 interface, USB interface and UART interface simultaneously.
10. the special-purpose 230MHz Mobitex of a kind of electric power according to claim 5 principal and subordinate redundant wireless data terminal is characterized in that, said transmitter module is the synthetic radiating circuit of power of the maximum power adjustable double power amplifier that can reach 25W.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204245368U CN202353571U (en) | 2011-10-31 | 2011-10-31 | Special 230MHz Mobitex master-slave redundancy wireless data terminal for power |
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| CN2011204245368U CN202353571U (en) | 2011-10-31 | 2011-10-31 | Special 230MHz Mobitex master-slave redundancy wireless data terminal for power |
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| CN202353571U true CN202353571U (en) | 2012-07-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957570A (en) * | 2014-05-07 | 2014-07-30 | 重庆大学 | Network communication system used for power load control and routing algorithm thereof |
| CN104485985A (en) * | 2014-12-18 | 2015-04-01 | 陕西烽火实业有限公司 | Transfer communication device and method for short-wave radio station communication |
| CN105208686A (en) * | 2015-10-15 | 2015-12-30 | 南京新联电子股份有限公司 | Aggregate multi-carrier wireless broadband radio frequency processing unit based on 230MHz dispersed frequency points |
-
2011
- 2011-10-31 CN CN2011204245368U patent/CN202353571U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957570A (en) * | 2014-05-07 | 2014-07-30 | 重庆大学 | Network communication system used for power load control and routing algorithm thereof |
| CN104485985A (en) * | 2014-12-18 | 2015-04-01 | 陕西烽火实业有限公司 | Transfer communication device and method for short-wave radio station communication |
| CN104485985B (en) * | 2014-12-18 | 2020-04-07 | 陕西烽火实业有限公司 | Letter transfer device and letter transfer method suitable for short-wave radio station communication |
| CN105208686A (en) * | 2015-10-15 | 2015-12-30 | 南京新联电子股份有限公司 | Aggregate multi-carrier wireless broadband radio frequency processing unit based on 230MHz dispersed frequency points |
| CN105208686B (en) * | 2015-10-15 | 2019-01-25 | 南京新联电子股份有限公司 | It polymerize multi-carrier-wave wireless wide band radio-frequency processing unit based on the discrete frequency point of 230MHz |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NORTH CHINA ELECTRIC POWER UNIVERSITY STATE ELECTR Free format text: FORMER OWNER: NORTH CHINA ELECTRIC POWER UNIVERSITY Effective date: 20121031 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121031 Address after: 114002 Anshan South Road, Tiedong District, Liaoning, Shengli Road, No. 33 Patentee after: Anshan Power Supply Company, Liaoning Electric Power Co., Ltd. Patentee after: North China Electric Power University Patentee after: State Grid Corporation of China Address before: 114002 Anshan South Road, Tiedong District, Liaoning, Shengli Road, No. 33 Patentee before: Anshan Power Supply Company, Liaoning Electric Power Co., Ltd. Patentee before: North China Electric Power University |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120725 Effective date of abandoning: 20131023 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120725 Effective date of abandoning: 20131023 |
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| RGAV | Abandon patent right to avoid regrant |