CN202195802U - Intelligent anti-electricity-stealing control device for ammeter box - Google Patents
Intelligent anti-electricity-stealing control device for ammeter box Download PDFInfo
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- CN202195802U CN202195802U CN2011202832606U CN201120283260U CN202195802U CN 202195802 U CN202195802 U CN 202195802U CN 2011202832606 U CN2011202832606 U CN 2011202832606U CN 201120283260 U CN201120283260 U CN 201120283260U CN 202195802 U CN202195802 U CN 202195802U
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Abstract
The utility model relates to an intelligent anti-electricity-stealing control device for an ammeter box. The intelligent anti-electricity-stealing control device for an ammeter box comprises a central control module, a detection module, an electronic key reception module, an output module, a wireless communication module and a power supply module. The detection module contains an entrance guard sensor, a temperature sensor and a smog sensor. The central control module contains a microprocessor. The output signals of the entrance guard sensor, the output signals of the temperature sensor and the output signals of the smog sensor are insolated by an optoelectronic coupler, and then enter the signal input terminal of the microprocessor. The electronic key reception module includes an infrared receiver. The output signals of the infrared receiver enter the electronic key signal input terminal of the microprocessor. The output module is used for controlling the work of a breaker or an air switch, an alarm and a recorder inside an ammeter box. The wireless communication module can be utilized for external communication. The intelligent anti-electricity-stealing control device provided by the utility model is simple in structure, strong in function and convenient in use.
Description
(1), technical field: the utility model relates to a kind of anti-electricity-theft control device, particularly a kind of ammeter box intelligent electricity anti-theft control device.
(2), background technology: the problem that power consumer is stolen electric power energy is the normal problem that occurs in power supply; Existing anti-electricity-theft method is used the thief-proof supervision of guarding against theft of leakage of current detection, papery seal, plastics seal, certain mechanical key more; These anti-electricity-theft methods exist manage afterwards, lose be difficult to confirm, defective such as the difficulty of collecting evidence; Maximum problem is that simple key and all kinds of seal have brought the complicacy on the empowerment management, can't effectively operate empowerment management to operating personnel.The very big like this power supply reliability index that influenced has been lost big volume and electricity, has caused the waste of resource, has influenced economic benefit of enterprises.
The patent documentation of the patent No. 200420031143.0 discloses a kind of low-voltage-powered type Based Intelligent Control metering ammeter box controller; The patent documentation of the patent No. 200620025435.2 discloses the anti-electricity-theft automaton of a kind of ammeter box with the smart card gate inhibition; The patent documentation of the patent No. 200720191207.7 discloses a kind of intelligence table case controller; They all judge whether to be normal door through on off state and the electron key that detects the ammeter chamber door; Improper in this way opening the door, the isolating switch of then controlling in the ammeter box breaks off.Though these ammeter box controllers have certain anti-stealing electricity function, its complicated circuit, high, the function singleness of cost, and also electron key is managed trouble.
(3), utility model content:
The technical matters that the utility model will solve is: not enough to prior art, a kind of simple in structure, ammeter box intelligent electricity anti-theft control device that function is strong, easy to use is provided.
The technical scheme of the utility model:
A kind of ammeter box intelligent electricity anti-theft control device; Contain central control module, detection module, electron key receiver module, output module and power module; Detection module contains gate inhibition's sensor; Central control module contains microprocessor, and power module is central control module, detection module, electron key receiver module and output module power supply, and detection module also contains temperature sensor, first photoelectrical coupler and second photoelectrical coupler; Gate inhibition's sensor is installed on the door of ammeter box; Be used for the folding condition of detecting gate, temperature sensor is installed in the inside of ammeter box, is used for detecting the ammeter box temperature inside; Gate inhibition's signal of sensor is through the laggard gate inhibition's signal input part of going into microprocessor of first photoelectric coupler isolation, and the output signal of temperature sensor is through the laggard temperature signal input end of going into microprocessor of second photoelectric coupler isolation; The electron key receiver module contains infrared remote receiver, and the output signal of infrared remote receiver gets into the electron key signal input part of microprocessor; Output module contains the 6th photoelectrical coupler and second relay; The signal of second output port of microprocessor is through the 6th photoelectric coupler isolation rear drive second actuating of relay; The contact of second relay is connected with interior isolating switch or the air switch of ammeter box; When second actuating of relay, can cause the tripping operation of isolating switch or air switch.
Ammeter box intelligent electricity anti-theft control device also contains wireless communication module, and wireless communication module is connected with the serial communication interface of microprocessor through the RS232 transceiver, and said power module is wireless communication module and the power supply of RS232 transceiver; Wireless communication module is GSM communication module or GPRS communication module, and the model of RS232 transceiver is MAX232EPE; Wireless communication module can with wireless receiving to the electron key code signal send microprocessor to.
Ammeter box intelligent electricity anti-theft control device also contains USB interface, and USB interface is connected with the serial communication interface of microprocessor through the USB-RS232 converter, and power module is the power supply of USB-RS232 converter; The model of USB-RS232 converter is PL2303.
Detection module also contains smoke transducer and the 3rd photoelectrical coupler; Smoke transducer is installed in the inside of ammeter box; Be used for detecting the inner smog of ammeter box, the output signal of smoke transducer is through the laggard smoke signal input end of going into microprocessor of the 3rd photoelectric coupler isolation.
The model of smoke transducer is the MQ-2 smoke transducer.
Output module also contains the 5th photoelectrical coupler, the 7th photoelectrical coupler, first relay and the 3rd relay; The signal of first output port of microprocessor is through the 5th photoelectric coupler isolation rear drive first actuating of relay, and the contact of first relay is connected with alarm, when first actuating of relay, can cause alarm equipment alarm; The signal of the 3rd output port of microprocessor is through the 7th photoelectric coupler isolation rear drive the 3rd actuating of relay, and the contact of the 3rd relay is connected with registering instrument, when the 3rd actuating of relay, can make registering instrument work.
Central control module also contains display, display driver, and a part of shows signal output terminal of microprocessor is connected with display, and another part shows signal output terminal of microprocessor is connected with display through display driver; Display is the charactron display, and the model of display driver is ULN2003.
Central control module also contains serial data memory, clock generator and power supervisor; The serial port of serial data memory and clock generator is connected with the serial data mouth of microprocessor, and the delivery outlet of power supervisor is connected with the reset terminal of microprocessor; The model of serial data memory is AT24C256, and the model of clock generator is DS1307, and the model of power supervisor is IMP813LESA.
With the matching used electron key of infrared remote receiver be infrared transmitter, contain digital keys and signal transmission circuit on the infrared transmitter, digital keys is used for inputing the electron key password, the signal that digital keys produces directly sends through signal transmission circuit; Infrared remote receiver sends this signal to microprocessor after receiving the signal of infrared transmitter transmission.
Power module contains Switching Power Supply and voltage stabilizer, and civil power is transformed into direct current through Switching Power Supply earlier, and then after the voltage stabilizer voltage stabilizing, exports, and the model of Switching Power Supply is LO10-24B12K, and the model of voltage stabilizer is WRE_P-6W.
The model of microprocessor is 89C52, and the model of infrared remote receiver is VS1388, and the model of gate inhibition's sensor is the wired iron gate magnetic of MC-58 (a red world board), and the model of temperature sensor is JUC-1M microminiature sealing temperature controller (production of Changsha Lai En Electronics Co., Ltd.).
This ammeter box intelligent electricity anti-theft control device can be used for the protection of all 10KV/0.4KV transformer outlet gauging table casees.During this ammeter box intelligent electricity anti-theft control device work; Microprocessor uninterruptedly reads the state of gate inhibition's sensor, temperature sensor, smoke transducer; And compare with the standard state that is set in microprocessor internal; As find inconsistent or when changing, immediately according to certain rule to fault report to the police, record, and make isolating switch or the low-voltage air switch of dropout annex thread off tripping operation, through the communication module reporting information.
The major function of this ammeter box intelligent electricity anti-theft control device is following:
1. alarm and trip avoidance function
After door of meter casing was opened three minutes with improper mode, this ammeter box intelligent electricity anti-theft control device gave the alarm, and drove circuit breaker trip.Close the ammeter chamber door again this moment and also can't remove warning and tripping isolating switch, report to the police until using electron key to remove controller, otherwise isolating switch can't close a floodgate.
When ammeter the temperature inside the box surpasses design temperature, the alarm alarm.Recover just often when temperature, alarm is alarmed disappearance;
When smog occurring in the ammeter box, the alarm alarm.After smog disappeared, the alarm alarm disappeared.
2. self-locking function
When the ammeter chamber door with unauthorized ways or improper mode (theft) when opening; The gate inhibition of ammeter box intelligent electricity anti-theft control device keeps watch on startup, after watch-keeping exceeds three minutes to the door time of opening, and circuit breaker trip; Ammeter box can't normally send electricity and can't close a floodgate; Must through electron key input proper password, can close a floodgate and send again by after the electric power maintenance personnel site inspection normally.
3. password authorization function
The site operation personnel is earlier through electron key, and the short time is removed the controller alarm, open ammeter box after, need in three minutes, import two-stage and safeguard licencing key.Operating personnel input whole password acquisition table casees and safeguard authority, and beginning his-and-hers watches case safeguards that the table case safeguards that authority stops when door of meter casing closes.Can't accomplish input at the appointed time when licencing key, promptly think to trespass, tripping main breaker and the isolating switch of timing tripping subsequently cause the operation of can't supplying power normally, until importing correct licencing key once more.
Licencing key is made up of a large amount of random numbers that generate at random, each 4 decimal number of two-stage, and one-level operating personnel's control, another level is responsible for by electricity consumption and is grasped.When after the gate inhibition opens, needing password authorization, be responsible for SEPARATE APPLICATION by operating personnel and electricity consumption and issue password, merge and input in the controller, and if only if, and password imports at the appointed time when correct, and microprocessor is confirmed to authorize and accomplished.
The beneficial effect of the utility model:
1, the utility model detects the folding condition of ammeter chamber door through gate inhibition's sensor; Receive the password of electron key through infrared remote receiver; Thereby whether the door of judging ammeter box is improper opening, and in this way, then makes isolating switch or air switch tripping operation in the ammeter box; And send warning, record time of fire alarming and warning classification, effectively prevented electricity filching behavior.Simultaneously, the utility model also has temperature detection and Smoke Detection function, as breaking down in the ammeter box; When producing high temperature and smog, can make isolating switch or air switch tripping operation in the ammeter box, and send warning, record time of fire alarming and warning classification; Greatly made things convenient for the management of work about electric power personnel to ammeter box; And this ammeter box intelligent electricity anti-theft control device is simple in structure, volume is little, in light weight, be convenient to install and change, meet the needs of real work.The utility model has improved the security of the power supply department management of power use, guarantees that the electricity charge of power supply department are effectively measured, and has safeguarded the social benefit and the economic benefit of power supply department.
2, the electron key of the utility model is an infrared transmitter, and infrared transmitter is provided with digital keys and signal transmission circuit, and digital keys is used for inputing password; The signal that digital keys produces is directly sent by signal transmission circuit, does not store password in the electron key, after infrared remote receiver receives the signal of infrared transmitter transmission; Send this signal to microprocessor; Do not store password in the infrared remote receiver yet, so the less expensive of this electron key and infrared remote receiver, electron key is fit to be distributed in the individual's hands in a large number; And can not reveal password, help the management of electron key.
3, the wireless communication module of the utility model can be realized the external communication of ammeter box; Pass through wireless communication module; Can or change different electron key passwords to different ammeter box intelligent electricity anti-theft control device grantings; Guaranteed the security and conversion property at any time of electron key password, made the management of electron key very convenient.
(4), description of drawings:
Fig. 1 is the principle schematic of central control module and electron key receiver module;
Fig. 2 is the principle schematic that USB interface is connected with the USB-RS232 converter;
Fig. 3 is the principle schematic that wireless communication module is connected with the RS232 transceiver;
Fig. 4 is the principle schematic of output module;
Fig. 5 is the principle schematic of detection module;
Fig. 6 is the principle schematic of power module.
(5), embodiment:
Referring to Fig. 1～Fig. 6; Among the figure; Ammeter box intelligent electricity anti-theft control device contains central control module 1, detection module, electron key receiver module 2, output module and power module, and detection module contains gate inhibition's sensor, and central control module contains microprocessor U1; Power module is central control module 1, detection module, electron key receiver module 2 and output module power supply; Detection module also contains temperature sensor, the first photoelectrical coupler O1 and the second photoelectrical coupler O2, and gate inhibition's sensor is installed on the door of ammeter box, is used for the folding condition of detecting gate; Temperature sensor is installed in the inside of ammeter box; Be used for detecting the ammeter box temperature inside, gate inhibition's signal of sensor is isolated gate inhibition's signal input part P2_4 of the laggard microprocessor U1 of going into through the first photoelectrical coupler O1, and the output signal of temperature sensor is isolated the temperature signal input end P2_5 of the laggard microprocessor U1 of going into through the second photoelectrical coupler O2; Electron key receiver module 2 contains infrared remote receiver T1, and the output signal of infrared remote receiver T1 gets into the electron key signal input part P3_2 of microprocessor U1; Output module contains the 6th photoelectrical coupler O6 and the second relay S2; The second output port P2_3 of microprocessor U1, the signal of P2_2 are isolated rear drive second relay S2 action through the 6th photoelectrical coupler O6; The contact of the second relay S2 is connected with the interior isolating switch of ammeter box; When the second relay S2 moves, can cause circuit breaker trip.
Ammeter box intelligent electricity anti-theft control device also contains wireless communication module, and wireless communication module is connected with serial communication interface P3_0, the P3_1 of microprocessor U1 through RS232 transceiver U7, and power module is wireless communication module and RS232 transceiver U7 power supply; Wireless communication module is the GSM communication module, and the model of RS232 transceiver U7 is MAX232EPE; Wireless communication module can with wireless receiving to the electron key code signal send microprocessor U1 to.
Ammeter box intelligent electricity anti-theft control device also contains USB interface, and USB interface is connected with serial communication interface P3_0, the P3_1 of microprocessor U1 through USB-RS232 converter U3, and power module is USB-RS232 converter U3 power supply; The model of USB-RS232 converter U3 is PL2303.
Detection module also contains smoke transducer and the 3rd photoelectrical coupler O3; Smoke transducer is installed in the inside of ammeter box; Be used for detecting the inner smog of ammeter box, the output signal of smoke transducer is isolated the smoke signal input end P2_6 of the laggard microprocessor U1 of going into through the 3rd photoelectrical coupler O3.
The model of smoke transducer is the MQ-2 smoke transducer.
Output module also contains the 5th photoelectrical coupler O5, the 7th photoelectrical coupler O7, the first relay S1 and the 3rd relay S3; The first output port P2_1 of microprocessor U1, the signal of P2_0 are isolated rear drive first relay S1 action through the 5th photoelectrical coupler O5, and the contact of the first relay S1 is connected with alarm, when the first relay S1 moves, can cause alarm equipment alarm; The 3rd output port P3_6 of microprocessor U1, the signal of P3_7 are isolated rear drive the 3rd relay S3 action through the 7th photoelectrical coupler O7, and the contact of the 3rd relay S3 is connected with registering instrument, when the 3rd relay S3 moves, can make registering instrument work.
With the matching used electron key of infrared remote receiver T1 be infrared transmitter; Contain digital keys and signal transmission circuit on the infrared transmitter; Digital keys is used for inputing the electron key password, and the signal that digital keys produces directly sends through signal transmission circuit; Infrared remote receiver T1 sends this signal to microprocessor U1 after receiving the signal of infrared transmitter transmission.
Power module contains Switching Power Supply P1 and voltage stabilizer P2, P3; Civil power is transformed into direct current through Switching Power Supply P1 earlier; And then after voltage stabilizer P2, P3 voltage stabilizing, export, the model of Switching Power Supply P1 is LO10-24B12K, the model of voltage stabilizer P2, P3 is WRE_P-6W.
The model of microprocessor U1 is 89C52; The model of infrared remote receiver T1 is VS1388; The model of gate inhibition's sensor is the wired iron gate magnetic of MC-58 (a red world board), and the model of temperature sensor is JUC-1M microminiature sealing temperature controller (production of Changsha Lai En Electronics Co., Ltd.).
This ammeter box intelligent electricity anti-theft control device can be used for the protection of all 10KV/0.4KV transformer outlet gauging table casees.During this ammeter box intelligent electricity anti-theft control device work; Microprocessor U1 uninterruptedly reads the state of gate inhibition's sensor, temperature sensor, smoke transducer; And compare with the standard state that is set in microprocessor internal; As find inconsistent or when changing, immediately according to certain rule to fault report to the police, record, and make the circuit breaker tripping tripping operation of dropout annex, through the communication module reporting information.
The major function of this ammeter box intelligent electricity anti-theft control device is following:
1. alarm and trip avoidance function
After door of meter casing was opened three minutes with improper mode, this ammeter box intelligent electricity anti-theft control device gave the alarm, and drove circuit breaker trip.Close the ammeter chamber door again this moment and also can't remove warning and tripping isolating switch, report to the police until using electron key to remove controller, otherwise isolating switch can't close a floodgate.
When ammeter the temperature inside the box surpasses design temperature, the alarm alarm.Recover just often when temperature, alarm is alarmed disappearance;
When smog occurring in the ammeter box, the alarm alarm.After smog disappeared, the alarm alarm disappeared.
2. self-locking function
When the ammeter chamber door with unauthorized ways or improper mode (theft) when opening; The gate inhibition of ammeter box intelligent electricity anti-theft control device keeps watch on startup, after watch-keeping exceeds three minutes to the door time of opening, and circuit breaker trip; Ammeter box can't normally send electricity and can't close a floodgate; Must through electron key input proper password, can close a floodgate and send again by after the electric power maintenance personnel site inspection normally.
3. password authorization function
The site operation personnel is earlier through electron key, and the short time is removed the controller alarm, open ammeter box after, need in three minutes, import two-stage and safeguard licencing key.Operating personnel input whole password acquisition table casees and safeguard authority, and beginning his-and-hers watches case safeguards that the table case safeguards that authority stops when door of meter casing closes.Can't accomplish input at the appointed time when licencing key, promptly think to trespass, tripping main breaker and the isolating switch of timing tripping subsequently cause the operation of can't supplying power normally, until importing correct licencing key once more.
Licencing key is made up of a large amount of random numbers that generate at random, each 4 decimal number of two-stage, and one-level operating personnel's control, another level is responsible for by electricity consumption and is grasped.When after the gate inhibition opens, needing password authorization, be responsible for SEPARATE APPLICATION by operating personnel and electricity consumption and issue password, merge and input in the controller, and if only if, and password imports at the appointed time when correct, and microprocessor is confirmed to authorize and accomplished.
Claims (10)
1. ammeter box intelligent electricity anti-theft control device; Contain central control module, detection module, electron key receiver module, output module and power module; Detection module contains gate inhibition's sensor; Central control module contains microprocessor, and power module is central control module, detection module, electron key receiver module and output module power supply, and it is characterized in that: detection module also contains temperature sensor, first photoelectrical coupler and second photoelectrical coupler; Gate inhibition's sensor is installed on the door of ammeter box; Temperature sensor is installed in the inside of ammeter box, and gate inhibition's signal of sensor is through the laggard gate inhibition's signal input part of going into microprocessor of first photoelectric coupler isolation, and the output signal of temperature sensor is through the laggard temperature signal input end of going into microprocessor of second photoelectric coupler isolation; The electron key receiver module contains infrared remote receiver, and the output signal of infrared remote receiver gets into the electron key signal input part of microprocessor; Output module contains the 6th photoelectrical coupler and second relay; The signal of second output port of microprocessor is through the 6th photoelectric coupler isolation rear drive second actuating of relay, and the contact of second relay is connected with interior isolating switch or the air switch of ammeter box.
2. ammeter box intelligent electricity anti-theft control device according to claim 1; It is characterized in that: also contain wireless communication module; Wireless communication module is connected with the serial communication interface of microprocessor through the RS232 transceiver, and said power module is wireless communication module and the power supply of RS232 transceiver; Wireless communication module is GSM communication module or GPRS communication module.
3. ammeter box intelligent electricity anti-theft control device according to claim 1 is characterized in that: also contain USB interface, USB interface is connected with the serial communication interface of microprocessor through the USB-RS232 converter, and said power module is the power supply of USB-RS232 converter.
4. ammeter box intelligent electricity anti-theft control device according to claim 1; It is characterized in that: said detection module also contains smoke transducer and the 3rd photoelectrical coupler; Smoke transducer is installed in the inside of ammeter box, and the output signal of smoke transducer is through the laggard smoke signal input end of going into microprocessor of the 3rd photoelectric coupler isolation.
5. ammeter box intelligent electricity anti-theft control device according to claim 1 is characterized in that: said output module also contains the 5th photoelectrical coupler, the 7th photoelectrical coupler, first relay and the 3rd relay; The signal of first output port of microprocessor is through the 5th photoelectric coupler isolation rear drive first actuating of relay, and the contact of first relay is connected with alarm; The signal of the 3rd output port of microprocessor is through the 7th photoelectric coupler isolation rear drive the 3rd actuating of relay, and the contact of the 3rd relay is connected with registering instrument.
6. ammeter box intelligent electricity anti-theft control device according to claim 1; It is characterized in that: said central control module also contains display, display driver; A part of shows signal output terminal of microprocessor is connected with display, and another part shows signal output terminal of microprocessor is connected with display through display driver; Display is the charactron display.
7. ammeter box intelligent electricity anti-theft control device according to claim 1; It is characterized in that: said central control module also contains serial data memory, clock generator and power supervisor; The serial port of serial data memory and clock generator is connected with the serial data mouth of microprocessor, and the delivery outlet of power supervisor is connected with the reset terminal of microprocessor.
8. ammeter box intelligent electricity anti-theft control device according to claim 1; It is characterized in that: with the matching used electron key of said infrared remote receiver be infrared transmitter; Contain digital keys and signal transmission circuit on the infrared transmitter, the signal that digital keys produces directly sends through signal transmission circuit.
9. ammeter box intelligent electricity anti-theft control device according to claim 1, it is characterized in that: said power module contains Switching Power Supply and voltage stabilizer, and civil power is transformed into direct current through Switching Power Supply earlier, and then after the voltage stabilizer voltage stabilizing, exports.
10. according to each described ammeter box intelligent electricity anti-theft control device in the claim 1～9, it is characterized in that: the model of said microprocessor is 89C52, and the model of said infrared remote receiver is VS1388.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011202832606U CN202195802U (en) | 2011-08-05 | 2011-08-05 | Intelligent anti-electricity-stealing control device for ammeter box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202832606U CN202195802U (en) | 2011-08-05 | 2011-08-05 | Intelligent anti-electricity-stealing control device for ammeter box |
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| CN202195802U true CN202195802U (en) | 2012-04-18 |
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| CN2011202832606U Expired - Lifetime CN202195802U (en) | 2011-08-05 | 2011-08-05 | Intelligent anti-electricity-stealing control device for ammeter box |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323463A (en) * | 2011-08-05 | 2012-01-18 | 郑州联兴百年电力工程有限公司 | Intelligent electricity stealing preventing control device for electricity meter box |
| CN105203819A (en) * | 2015-10-23 | 2015-12-30 | 国家电网公司 | Pickproof and fire-resistant alarming device for electric meter box |
| CN109116106A (en) * | 2018-10-31 | 2019-01-01 | 江苏骏龙光电科技股份有限公司 | A kind of intelligent electric meter for smart grid |
| CN112562130A (en) * | 2020-12-03 | 2021-03-26 | 广东电网有限责任公司中山供电局 | Anti-electricity-stealing intelligent lock system of centralized electricity meter box |
-
2011
- 2011-08-05 CN CN2011202832606U patent/CN202195802U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323463A (en) * | 2011-08-05 | 2012-01-18 | 郑州联兴百年电力工程有限公司 | Intelligent electricity stealing preventing control device for electricity meter box |
| CN105203819A (en) * | 2015-10-23 | 2015-12-30 | 国家电网公司 | Pickproof and fire-resistant alarming device for electric meter box |
| CN109116106A (en) * | 2018-10-31 | 2019-01-01 | 江苏骏龙光电科技股份有限公司 | A kind of intelligent electric meter for smart grid |
| CN112562130A (en) * | 2020-12-03 | 2021-03-26 | 广东电网有限责任公司中山供电局 | Anti-electricity-stealing intelligent lock system of centralized electricity meter box |
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| CP01 | Change in the name or title of a patent holder |
Address after: 450007 No. 12, Huaihe Road, Zhongyuan District, Henan, Zhengzhou Patentee after: Henan Lianxing Century Electric Power Construction Engineering Company Limited Address before: 450007 No. 12, Huaihe Road, Zhongyuan District, Henan, Zhengzhou Patentee before: Zhengzhou Lianxing Electrical Installation Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
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| CX01 | Expiry of patent term |