CN101464118A - Ignition control apparatus and its control process - Google Patents
Ignition control apparatus and its control process Download PDFInfo
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- CN101464118A CN101464118A CNA2008102113757A CN200810211375A CN101464118A CN 101464118 A CN101464118 A CN 101464118A CN A2008102113757 A CNA2008102113757 A CN A2008102113757A CN 200810211375 A CN200810211375 A CN 200810211375A CN 101464118 A CN101464118 A CN 101464118A
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Abstract
The invention provides an ignition control device, which comprises a bridge rectifier circuit, a power management circuit, a logic control circuit, a clock circuit and an ignition control circuit, wherein, the ignition control circuit comprises a charge control switch, an RC low pass filter, a safety discharge switch and an ignition control switch; and the RC low pass filter comprises a current-limiting resistor and a storage capacitor. The invention further provides the control flow of the ignition control device, which comprises an initialization control flow, an ignition control flow and other steps, wherein, the ignition control flow is carried out according to the following steps: the logic control circuit transmits a control signal, disconnects the safety discharge switch and closes the charge control switch; the logic control circuit starts electronic delay after reaching the desired charging time; and the logic control circuit transmits the control signal and closes the ignition control switch after reaching the desired delay time. Therefore, the energy for initiation can be controlled safely and reliably, thereby improving the ignition safety.
Description
Technical field
The present invention relates to priming system manufacturing technology field, relate in particular to a kind of ignition control device and control flow thereof that can be used for electric cap.
Background technology
In traditional electric cap IGNITION CONTROL, electric cap is in parallel or be connected in series on the energy supply line that detonates of being drawn by the electric detonator initiation controller.The major defect of this initiation control process is:
1. the common electrical detonator adopts the extension body to realize the delay initiation function.This design not only delay precision is poor, and the time of extension is also immutable.In addition, owing to contain delay powder and plumbous such heavy metal in the extension body, this electric cap can cause the dissipation of using the back heavy metal, and the burning of delay powder also can cause environmental pollution.
2. the initiation process of common electrical detonator is uncontrollable, and energising promptly enters the flow process of detonating, and is irreversible, meets emergency and also can not interrupt, and has potential safety problem.
Since igniter head directly payment to a porter is connected with detonator, so external disturbance such as static discharge, radio-frequency radiation, stray electrical current all will directly influence the security of detonator production, storage and use.
Summary of the invention
The objective of the invention is to solve the defective that above-mentioned prior art exists, a kind of ignition control device that can control the electric cap institute energy requirement that detonates safely and reliably is provided, thereby improve the security of blasting process.
The present invention adopts following technical scheme to realize:
This ignition control device comprises rectifier circuit bridge, electric power management circuit, logic control circuit, clock circuit and ignition control circuit.Wherein, rectifier circuit bridge one end is connected to electric power management circuit and ignition control circuit simultaneously, an end ground connection; The ignition control device outside is led at all the other two ends, is connected to the electric detonator initiation power supply of ignition control device outside, constitutes the power input of ignition control device.Electric power management circuit one end connects rectifier circuit bridge, an end ground connection, and all the other ends are connected to logic control circuit and clock circuit simultaneously.Logic control circuit one end ground connection, an end connects ignition control circuit, and an end connects clock circuit, and all the other ends connect electric power management circuit.Clock circuit one end connects electric power management circuit, an end ground connection, and all the other ends connect logic control circuit.Ignition control circuit one end connects rectifier circuit bridge, and an end connects logic control circuit, an end ground connection; The ignition control device outside is led at all the other two ends, is connected to the igniter of ignition control device outside, constitutes the output of ignition control device.
The benefit of this technical scheme is:
This ignition control device 200 be used to be connected in parallel the initiation control networking time, as Fig. 5, be connected between the payment to a porter of detonate the energy supply line 500 and the electric cap 600 of drawing by electric detonator initiation power supply 400, and be close to the electric cap arrangement, promptly this ignition control device 200 is connected with the energy supply line 500 that detonates, is connected with the payment to a porter of electric cap 600 by output 310 by power input 110.This just makes igniter head in the detonator 600 (above-mentioned igniter a kind of) isolate fully with the energy supply line 500 that detonates, thereby makes the raising of antistatic, the anti-radio frequency of detonator, anti-stray current performance become possibility.
2. the existence of rectifier circuit bridge has realized the nonpolarity connection of this ignition control device power input, has eliminated its danger that is caused device to damage by reversal connection, makes that the construction of blasting engineering is easier, safety.
3. logic control circuit and clock circuit are realized the function of delaying jointly.Owing to adopting instant electric detonator also can realize delaying in the initiation control networking of having introduced this ignition control device, the existence that this has just been avoided delay powder in the traditional electrical detonator has reduced the use of heavy metal, has alleviated environmental pollution.In addition, adopt the high accuracy clock circuit to realize the electronics extension, make that also the defer time at initiation control networking is more accurate.
4. ignition control circuit has been realized the storage of the energy that detonates and the control of release, thereby has improved the security and the reliability of initiation control.
As a preferred embodiment of the present invention, above-mentioned ignition control circuit can comprise charging control switch, RC low pass filter, safe discharge switch and ignition control switch.Wherein, charging control switch one end connects rectifier circuit bridge, and an end connects logic control circuit, and an end connects RC low pass filter, all the other end ground connection.RC low pass filter one end connects charging control switch, an end ground connection; All the other ends are connected with safe discharge switch, and lead to the ignition control device outside jointly, are connected to an end of the igniter of this ignition control device outside, constitute one of output of ignition control device.Safe discharge switch one end ground connection, an end connects logic control circuit, and all the other ends are connected with an end of RC low pass filter.Ignition control switch one end ground connection, an end connects logic control circuit, and all the other ends lead to the ignition control device outside, are connected to the other end of the igniter of this ignition control device outside, two of the output of formation ignition control device.
Above-mentioned RC low pass filter is made of a current-limiting resistance and a storage capacitor.Wherein, storage capacitor one end ground connection, the other end connects an end of current-limiting resistance, and is connected with the safety discharge switch simultaneously.The other end of current-limiting resistance connects charging control switch.
The benefit of this preferred version is:
1. in this ignition control device, adopt RC low pass filter 252 and ignition control switch 254, the two ends with its outside igniter 300 keep apart with the energy supply line 500 that detonates respectively, as Fig. 2.This has just guaranteed the isolation fully of igniter 300 and the outside energy that detonates, thereby has improved between detonator pin shell, the Electrostatic Safety between the pin pin, and the ability of anti-stray current.
2. the existence of rectifier circuit bridge 201 makes all external electric signals of input this ignition control device 200 all export from the cathode output end of this rectifier circuit bridge 201, as Fig. 2.When charging control switch 251 closures, RC low pass filter 252 promptly is next to after the cathode output end of above-mentioned rectifier circuit bridge 201, this has just realized the filtering to all external electric signals, thereby has avoided the high frequency harm to the initiation control networking security such as static discharge, radio-frequency radiation, stray electrical current.
3. the resistance of formation RC low pass filter and electric capacity also possess other functions respectively except realizing LPF, eliminating the effect of interfering signal.One, electric capacity are used to store the required electric energy of igniter that detonates, so can be described as storage capacitor.On the one hand, in the initiation control process, when causing power failure because of accidents such as slungshots, stored energy still can guarantee normally detonating of electric cap in the above-mentioned storage capacitor.On the other hand, adopt mode, the impact of moment of having avoided detonating to electric detonator initiation power-supply system that the energy that detonates is provided in the inner energy storage of the ignition control device corresponding with every generating detonator.Its two, the size of current when resistance is used to limit to above-mentioned storage capacitor charging is so can be described as current-limiting resistance.Such technical scheme has realized the charge and discharge process of low current charge, heavy-current discharge, thereby has reduced the requirement to electric detonator initiation power supply output immediate current ability.
4. the introducing of charging control switch has realized the control to the storage capacitor charging process, thereby has ensured in the safety of preparatory stage to the operation of initiation control networking of detonating.
5. the introducing of safe discharge switch, make that stored energy can discharge at any time on the storage capacitor, thereby, make blasting process to interrupt on the one hand, that is, when needs interrupt explosion, closed safe discharge switch, above-mentioned storage capacitor promptly constitutes discharge loop with the safety discharge switch, thereby is released stored energy in the storage capacitor.This has just improved the troubleshooting capability at initiation control networking.On the other hand, the electric charge that can avoid causing because of factors such as interference on the storage capacitor is accumulated, thereby improves the security of using.
6. the introducing of ignition control switch has been isolated igniter on the one hand, disturbs the igniter Influence on security thereby completely cut off static discharge, radio-frequency radiation, stray electrical current etc.On the other hand, because this ignition control switch is subjected to the control of logic control circuit, therefore, even stored the igniter institute energy requirement that detonates in the above-mentioned storage capacitor, also must be under the control of logic control circuit, above-mentioned energy can effectively discharge and then flashpoint fire device.The management that this has just realized the energy that detonates makes explosion safer.
The present invention also provides the control flow of above-mentioned ignition control device, comprises following steps:
The first step, logic control circuit is changed to the initialization state with ignition control circuit, and promptly logic control circuit is changed to charging control switch off-state, safe discharge switch is changed to closure state, ignition control switch is changed to off-state.
In second step, carry out the IGNITION CONTROL flow process.
In the 3rd step, finish this control flow.
Wherein, the IGNITION CONTROL flow process is carried out according to following steps:
Step 1, logic control circuit transmits control signal, and disconnects safe discharge switch.
Step 2, logic control circuit transmits control signal, and closed charging control switch makes the power supply of ignition control device outside begin to charge to the storage capacitor of inside.
Step 3, whether the logic control circuit monitoring arrives the preset charged time: if arrive the preset charged time, then proceed step 4; If no show, then logic control circuit continues monitoring.
Step 4, logic control circuit start electronics delays, and default defer time is begun countdown.
Step 5, logic control circuit judge whether to arrive default defer time: if arrive, then proceed step 6; If no show, then logic control circuit continues default defer time is carried out countdown, and judges whether to arrive this time.
Step 6, logic control circuit transmits control signal, and the closes ignition gauge tap makes storage capacitor begin to discharge to the igniter of this ignition control device outside.Finish this IGNITION CONTROL flow process.
In above-mentioned control flow, the initialization state of ignition control circuit is set to charging control switch disconnection, safe discharge switch closure, ignition control switch disconnection, guaranteed do not entering explosion during the preparatory stage, can't storage of electrical energy on the storage capacitor, igniter can't form discharge loop, thereby reliably avoided the generation of unexpected accident such as detonate.
Description of drawings
Fig. 1 is a The general frame of the present invention;
Fig. 2 is the schematic block diagram of ignition control circuit among the present invention;
Fig. 3 is the general flow chart of ignition control device of the present invention;
Fig. 4 is IGNITION CONTROL flow chart among the present invention;
Networking schematic diagram when Fig. 5 is used for electric detonator initiation control networking for the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further details.
1. rectifier circuit bridge 201 1 ends are connected to electric power management circuit 202 and ignition control circuit 205, one end ground connection simultaneously; Ignition control device 200 outsides are led at all the other two ends, are connected to the electric detonator initiation power supply 400 of ignition control device 200 outsides, constitute the power input 110 of ignition control device 200.Rectifier circuit bridge 201 is used for the energy via power input 110 inputs is carried out the polarity conversion, thereby make no matter be normal power supply input, or the input of outside non-secure telecommunications such as electromagnetic interference, static discharge, stray electrical current number, all export from the non-earth terminal of rectifier circuit bridge 201, these signals and then through being connected the filter action of charging control circuit 205 thereafter, thus filtering outside non-safe high-frequency interferencing signal.
2. electric power management circuit 202 1 ends connect rectifier circuit bridge 201, one end ground connection, and all the other ends are connected to logic control circuit 203 and clock circuit 204 simultaneously.Electric power management circuit 202 is used for handle from the work energy that rectifier circuit bridge 201 receives, and is converted to logic control circuit 203 and clock circuit 204 work required voltages.
3. logic control circuit 203 1 end ground connection, an end connects ignition control circuit 205, one ends and connects clock circuit 204, and all the other ends connect electric power management circuits 202.The clock signal that provides according to clock circuit 204 is provided logic control circuit 203, and the course of work of ignition control circuit 205 is controlled, and promptly controls the charge and discharge process to storage capacitor 256.
4. clock circuit 204 1 ends connect electric power management circuit 202, one end ground connection, and all the other ends connect logic control circuit 203.Clock circuit 204 is used to provide logic control circuit 203 work required clock signal.
5. ignition control circuit 205 1 ends connect rectifier circuit bridge 201, one ends and connect logic control circuit 203, one end ground connection; Ignition control device 200 outsides are led at all the other two ends, are connected to the igniter 300 of ignition control device 200 outsides, constitute the output 310 of ignition control device 200.Ignition control circuit 205 is used for the high-frequency signal that filtering rectifier circuit bridge 201 is exported on the one hand, is used on the other hand under the control of logic control circuit 203 energy of exporting to igniter 300 being carried out security control.
As a preferred embodiment of the present invention, as Fig. 2, above-mentioned ignition control circuit 205 comprises charging control switch 251, RC low pass filter 252, safe discharge switch 253 and ignition control switch 254.Be described in detail as follows:
1. charging control switch 251 1 ends connect rectifier circuit bridge 201, one ends and connect logic control circuit 203, one ends connection RC low pass filter 252, all the other end ground connection.Under the control of logic control circuit 203, charging control switch 251 closures, thus the energy of rectifier circuit bridge 201 output is stored in the storage capacitor 256 in the RC low pass filter 252.
2.RC low pass filter 252 1 ends connect charging control switch 251, one end ground connection; All the other ends are connected with safe discharge switch 253, and lead to ignition control device 200 outsides jointly, are connected to an end of the igniter 300 of this ignition control device 200 outsides, constitute one of output 310 of ignition control device 200.RC low pass filter 252 is used for the high-frequency signal that filtering rectifier circuit bridge 201 is exported on the one hand, is used to store the energy of rectifier circuit bridge 201 outputs on the other hand.
3. safe discharge switch 253 1 end ground connection, an end connects logic control circuit 203, and all the other ends are connected with an end of RC low pass filter 252.Under the control of logic control circuit 203, safe discharge switch 253 closures, thereby in the RC low pass filter 252 on the storage capacitor 256 stored energy be released the security when this has just ensured the non-fired state of electric cap.
4. ignition control switch 254 1 end ground connection, one end connects logic control circuit 203, all the other ends lead to ignition control device 200 outsides, are connected to the other end of the igniter 300 of this ignition control device 200 outsides, two of the output 310 of formation ignition control device 200.Under the control of logic control circuit 203, ignition control switch 254 closures, thereby in the RC low pass filter 252 on the storage capacitor 256 stored energy be discharged into fast on the igniter 300, finish igniting.
In technical scheme shown in Figure 2, ignition control switch 254, safe discharge switch 253 and charging control switch 251 can be taken as any type of power control such as FET, transistor, relay, IGCT electronic switch.
RC low pass filter 252 is made of current-limiting resistance 255 and storage capacitor 256, as Fig. 2.Be described in detail as follows:
1. storage capacitor 256 1 end ground connection, the other end connects an end of current-limiting resistance 255, and is connected with safety discharge switch 253 simultaneously.This electric capacity 256 is used to store igniter 300 ignition institute energy requirements.Generally, to be taken as tens of microfarad magnitudes be good to the appearance value of this storage capacitor 256.
2. the other end of current-limiting resistance 255 connects charging control switch 251.The size of electric current when this resistance 255 is used to limit to storage capacitor 256 chargings.Generally, to be taken as kilo-ohm magnitude be good to the resistance of resistance 255.
The parameter value of comprehensive above-mentioned storage capacitor 256 and current-limiting resistance 255, then the signal frequency by this RC low pass filter 252 can be controlled to be a hertz magnitude, thereby avoid the high frequency harm to the initiation control networking security such as static discharge, radio-frequency radiation, stray electrical current.
As Fig. 3, the present invention also provides the control flow of above-mentioned ignition control device 200, comprises following steps:
The first step, logic control circuit 203 is changed to the initialization state with ignition control circuit 205, and promptly logic control circuit 203 is changed to charging control switch 251 off-state, safe discharge switch 253 is changed to closure state, ignition control switch 254 is changed to off-state.
In second step, carry out the IGNITION CONTROL flow process.
In the 3rd step, finish this control flow.
Wherein, the IGNITION CONTROL flow process is carried out according to following steps, as Fig. 4:
Step 1, logic control circuit 203 transmits control signal, and disconnects safe discharge switch 253.
Step 2, logic control circuit 203 transmits control signal, and closed charging control switch 251 makes storage capacitor 256 chargings of electric detonator initiation power supply 400 beginnings of ignition control device 200 outsides to inside.
Step 3, whether logic control circuit 203 monitorings arrive the preset charged time: if arrive the preset charged time, then proceed step 4; If no show, then logic control circuit 203 continues monitoring.
Step 4, logic control circuit 203 start electronics delays, and default defer time is begun countdown.
Step 5, logic control circuit 203 judges whether to arrive default defer time: if arrive, then proceed step 6; If no show, then logic control circuit 203 continues default defer time is carried out countdown, and judges whether to arrive this time.
Step 6, logic control circuit 203 transmits control signal, and closes ignition gauge tap 254 makes igniter 300 discharges of storage capacitor 256 beginnings to this ignition control device 200 outsides.Finish this IGNITION CONTROL flow process.
Fig. 5 has provided the networking schematic diagram that ignition control device 200 of the present invention is applied to instant electric detonator initiation control networking.The power input 110 of this ignition control device 200 is connected to nonpolarity difference respectively on the energy supply line 500 that detonates of being drawn by electric detonator initiation power supply 400, and output 310 is connected with the payment to a porter of instant electric detonator 600 respectively.
Claims (5)
1. ignition control device is characterized in that:
It comprises rectifier circuit bridge, electric power management circuit, logic control circuit, clock circuit and ignition control circuit,
Described rectifier circuit bridge one end is connected to described electric power management circuit and described ignition control circuit simultaneously, an end ground connection; Described ignition control device outside is led at all the other two ends, is connected to the power supply of described ignition control device outside, constitutes the power input of described ignition control device;
Described electric power management circuit one end connects described rectifier circuit bridge, an end ground connection, and all the other ends are connected to described logic control circuit and described clock circuit simultaneously;
Described logic control circuit one end ground connection, an end connects described ignition control circuit, and an end connects described clock circuit, and all the other ends connect described electric power management circuit;
Described clock circuit one end connects described electric power management circuit, an end ground connection, and all the other ends connect described logic control circuit;
Described ignition control circuit one end connects described rectifier circuit bridge, and an end connects described logic control circuit, an end ground connection; Described ignition control device outside is led at all the other two ends, is connected to the igniter of described ignition control device outside, constitutes the output of described ignition control device.
2. ignition control device according to claim 1 is characterized in that:
Described ignition control circuit comprises charging control switch, RC low pass filter, safe discharge switch and ignition control switch,
Described charging control switch one end connects described rectifier circuit bridge, and an end connects described logic control circuit, and an end connects described RC low pass filter, all the other end ground connection;
Described RC low pass filter one end connects described charging control switch, an end ground connection; All the other ends are connected with described safe discharge switch, and lead to described ignition control device outside jointly, are connected to an end of described igniter, constitute one of output of described ignition control device;
Described safe discharge switch one end ground connection, an end connects described logic control circuit, and all the other ends are connected with an end of described RC low pass filter;
Described ignition control switch one end ground connection, an end connects described logic control circuit, all the other ends lead to described ignition control device outside, are connected to the other end of described igniter, constitute described ignition control device output two.
3. ignition control device according to claim 2 is characterized in that:
Described RC low pass filter is made of a current-limiting resistance and a storage capacitor,
Described storage capacitor one end ground connection, the other end connects an end of described current-limiting resistance, and is connected with described safe discharge switch simultaneously; The other end of described current-limiting resistance connects described charging control switch.
4. the control flow of a described ignition control device is characterized in that:
The first step, described logic control circuit is changed to the initialization state with described ignition control circuit, and promptly described logic control circuit is changed to described charging control switch off-state, described safe discharge switch is changed to closure state, described ignition control switch is changed to off-state;
In second step, carry out the IGNITION CONTROL flow process;
In the 3rd step, finish this control flow.
5. control flow according to claim 4 is characterized in that:
Described IGNITION CONTROL flow process is carried out according to following steps:
Step 1, described logic control circuit transmits control signal, and disconnects described safe discharge switch;
Step 2, described logic control circuit transmits control signal, and closed described charging control switch makes described power supply begin to charge to the described storage capacitor of inside;
Step 3, whether described logic control circuit monitoring arrives the preset charged time,
If arrive the described preset charged time, then proceed step 4; If no show, then described logic control circuit continues monitoring;
Step 4, described logic control circuit start electronics delays, and default defer time is begun countdown;
Step 5, described logic control circuit judge whether to arrive described default defer time, if arrive, then proceed step 6; If no show, then described logic control
The system circuit continues described default defer time is carried out countdown, and judges whether
Reach this time;
Step 6, described logic control circuit transmits control signal, and closed described ignition control switch begins to described igniter discharge described storage capacitor; Finish this IGNITION CONTROL flow process.
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| CN2008102113757A CN101464118B (en) | 2008-09-24 | 2008-09-24 | Ignition control apparatus and its control process |
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| CN2008102113757A CN101464118B (en) | 2008-09-24 | 2008-09-24 | Ignition control apparatus and its control process |
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| CN101464118A true CN101464118A (en) | 2009-06-24 |
| CN101464118B CN101464118B (en) | 2012-08-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735123A (en) * | 2011-04-06 | 2012-10-17 | 傲杰得公司 | Delay ignition device |
| CN102865786A (en) * | 2012-09-28 | 2013-01-09 | 融硅思创(北京)科技有限公司 | High-precision detonator blasting system based on electronic delay body |
| CN102889161A (en) * | 2012-09-11 | 2013-01-23 | 中国航天科工集团第六研究院二一〇所 | Impulse engine ignition control device |
| CN103051323A (en) * | 2012-09-14 | 2013-04-17 | 中国航天科技集团公司第四研究院第四十一研究所 | Conditioning conversion circuit for airborne time sequence and initiating explosive device test |
| CN103312145A (en) * | 2012-03-07 | 2013-09-18 | 中国人民解放军总参谋部工程兵科研三所 | Device for preventing mistaken explosions caused by electromagnetic interference in explosion-relevant operations |
| CN109470094A (en) * | 2018-11-19 | 2019-03-15 | 中北大学 | Safety ignition circuit with short-circuit insurance function |
| CN111964095A (en) * | 2020-08-25 | 2020-11-20 | 松山湖材料实验室 | Combustion system control method and device and combustion system |
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2008
- 2008-09-24 CN CN2008102113757A patent/CN101464118B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735123A (en) * | 2011-04-06 | 2012-10-17 | 傲杰得公司 | Delay ignition device |
| CN102735123B (en) * | 2011-04-06 | 2015-01-21 | 傲杰得公司 | Delay ignition device |
| CN103312145A (en) * | 2012-03-07 | 2013-09-18 | 中国人民解放军总参谋部工程兵科研三所 | Device for preventing mistaken explosions caused by electromagnetic interference in explosion-relevant operations |
| CN102889161A (en) * | 2012-09-11 | 2013-01-23 | 中国航天科工集团第六研究院二一〇所 | Impulse engine ignition control device |
| CN103051323A (en) * | 2012-09-14 | 2013-04-17 | 中国航天科技集团公司第四研究院第四十一研究所 | Conditioning conversion circuit for airborne time sequence and initiating explosive device test |
| CN103051323B (en) * | 2012-09-14 | 2015-06-10 | 中国航天科技集团公司第四研究院第四十一研究所 | Conditioning conversion circuit for airborne time sequence and initiating explosive device test |
| CN102865786A (en) * | 2012-09-28 | 2013-01-09 | 融硅思创(北京)科技有限公司 | High-precision detonator blasting system based on electronic delay body |
| CN102865786B (en) * | 2012-09-28 | 2015-11-25 | 融硅思创(北京)科技有限公司 | A kind of High-precision Detonator blasting system based on electronic delay element |
| CN109470094A (en) * | 2018-11-19 | 2019-03-15 | 中北大学 | Safety ignition circuit with short-circuit insurance function |
| CN109470094B (en) * | 2018-11-19 | 2023-11-17 | 中北大学 | Safety ignition circuit with short-circuit safety function |
| CN111964095A (en) * | 2020-08-25 | 2020-11-20 | 松山湖材料实验室 | Combustion system control method and device and combustion system |
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| CN101464118B (en) | 2012-08-08 |
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Address after: 100097 Beijing city Haidian District road Jin Yuan era business center A block 11F Patentee after: Beijing Ebtech Co., Ltd. Address before: 100085 Beijing city Haidian District East Road No. 1 Yingchuang power block A Room 601 Patentee before: Beijing Ebtech Co., Ltd. |
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Effective date of registration: 20220119 Address after: 226141 Group 8, Lianyi village, Sijia Town, Haimen District, Nantong City, Jiangsu Province Patentee after: Nantong Weitian Electronic Technology Co.,Ltd. Address before: 100097 11F, block a, Jinyuan times business center, lantianchang Road, Haidian District, Beijing Patentee before: BEIJING EBTECH TECHNOLOGY CO.,LTD. |