CN202217066U - Three-component intelligent acceleration detector - Google Patents
Three-component intelligent acceleration detector Download PDFInfo
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- CN202217066U CN202217066U CN2011202896542U CN201120289654U CN202217066U CN 202217066 U CN202217066 U CN 202217066U CN 2011202896542 U CN2011202896542 U CN 2011202896542U CN 201120289654 U CN201120289654 U CN 201120289654U CN 202217066 U CN202217066 U CN 202217066U
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Abstract
The utility model relates to a three-component intelligent acceleration detector. The three-component intelligent acceleration detector in the utility model can solves problems of severe interference, large detection error in a detection process in the prior art. A key point of the technical scheme is that the three-component intelligent acceleration detector is supplied with power by a voltage-stabilizing power source and the three-component intelligent acceleration detector includes an intelligent control module, a program storage and a data storage. The intelligent control module connects with a clock circuit and a reset circuit electrically. Both of the program storage and the data storage connect with the intelligent control module electrically. The three-component intelligent acceleration detector also includes a three-component intelligent acceleration input module and a communication output module. The three-component intelligent acceleration detector connects with the intelligent controller electrically. The communication output module connects with the intelligent control module electrically. The three-component intelligent acceleration detector in the utility model can realize detection operation accurately and has advantages of good response of amplitude and frequency of to-be-detected parameter, high sensibility and strong anti-interference capability.
Description
Technical field
The utility model relates to a kind of geophysical survey device, particularly a kind of three-component intelligence acceleration detector that is applied to the engineering seismology exploration.
Background technology
The development of acceleration transducer, the just history of decades.Domestic research to acceleration transducer mainly concentrates on the one-dimensional acceleration transducer; Research history to the three-component acceleration transducer is shorter, and initial people are used to detect steric acceleration with 3 accelerometer composite assemblies; And obtain certain effect; But therefore shortcomings such as poor stability, the scope of application are little, assembling difficulty that the structure of assembly unit has need incorporate three-component acceleration transducer, to realize the reliable control to system.Research for the three-component acceleration transducer of integral structure; The history of foreign study is not long yet; Be main with piezoelectric type, condenser type mainly, the three-component acceleration transducer on the market adopts fabricated structure mostly, certainly will cause like this that sensor bulk is excessive, precision is low, processed complex.Along with developing rapidly of technology and material technology; In recent years; Develop many high performance three-component acceleration transducers both at home and abroad; They are highly sensitive, mutual interference property is little, favorable linearity, big dynamic range, wide frequency band range and low noise level, in industry, information and communicate by letter, national defence, Aero-Space, navigation, medical treatment and thing give birth to fields such as engineering, agricultural, environment, earthquake and home services and all be widely used.But; In the earth exploration field, the three-component acceleration transducer of use receives very big restriction, is applied to earth exploration though developed electrochemical transducer and optical sensor etc. in recent years; But the effect that obtains is still unsatisfactory; To remote mass data collection, owing to have the loss of transmission of power and the disturbing effect in the transmission course, still there is bigger defective in the signal that obtains especially.
Chinese patent publication number CN201477213U discloses a kind of moving-coil type digital geophone open day on May 19th, 2010, and its technical scheme is that existing moving-coil type seismoreceiver further connects digital unit and communication unit successively.Though this technical scheme has adopted the moving-coil type seismoreceiver, in the process of using, exist distinct disadvantage, because the signal that moving-coil type simple component speed pickup produces is a voltage analog signal; In transmission course, be interfered easily and signal is decayed easily; Special in the prospecting system of multi-channel acquisition, the signal cable distance of institute's cloth, its signal attenuation is huge; The interference that receives is also very serious; And in order to gather a large amount of geological datas, it is very extensive that remote method of exploration is used, and reduces signal attenuation and external disturbance needs to be resolved hurrily.And in its technical scheme; The pregain that uses is non-adjustable, and seismic energy appearance not of uniform size is widely different in the geophysical survey; And common mode interference is also relatively more serious; Pregain is non-adjustable to have bigger influence to measuring accuracy, owing to have the loss of transmission of power and the disturbing effect in the transmission course, overall measurement accuracy is still had bigger influence simultaneously.
Summary of the invention
The purpose of the utility model is to solve and receives to disturb comparatively serious in the prior art measuring process, and measuring has the problem than mistake, and providing a kind of has the digitizing of employing detection, antijamming capability stronger, and the three-component intelligence acceleration detector than high measurement accuracy is arranged.
The utility model solves the technical scheme that its technical matters adopted: a kind of three-component intelligence acceleration detector; Supply power by stabilized voltage supply; Comprise intelligent control module, program storage and data-carrier store; Intelligent control module is electrically connected with clock circuit and reset circuit, and described program storage and data-carrier store all are electrically connected with intelligent control module, and described three-component intelligence acceleration detector also includes three-component intelligence acceleration load module and communication output module; Described three-component intelligence acceleration load module is electrically connected with described intelligent control module, and described communication output module is electrically connected with described intelligent control module.Be provided with like this; What use is that digitized three-component intelligence acceleration load module carries out comprehensive detection to three component speed on the three-dimensional, can improve the data acquisition precision, and measured parameter amplitude and frequency response are good, highly sensitive, wide dynamic range, raising data in real time processing power; The speed of data acquisition also obtains very big improvement; Strengthen antijamming capability, reduce the loss of useful signal in transmission course greatly, thereby obtain high-quality geological data data.
As preferably; Described three-component intelligence acceleration load module comprises three-component acceleration transducer, three groups of pre-amplification circuits, circulating sampling circuit, buffer amplifier circuit and A/D converters; Said three-component acceleration transducer includes three output terminals; Three output terminals of said three-component acceleration transducer are respectively to there being one group of pre-amplification circuit; Three output terminals of said three-component acceleration transducer are electrically connected with the input end of corresponding pre-amplification circuit respectively; The output terminal of said pre-amplification circuit is electrically connected with the input end of said circulating sampling circuit, and said circulating sampling circuit control end is electrically connected with described intelligent control module, and the output terminal of said circulating sampling circuit is electrically connected with the input end of said buffer amplifier circuit; The output terminal of said buffer amplifier circuit is electrically connected with the input end of A/D converter, and the output terminal of said A/D converter and control end all are electrically connected with intelligent control module.Be provided with like this be because; Three groups of three-component acceleration transducer be output as simulating signal generally a little less than; So each output signal all need pass through amplification, carry out analog to digital conversion then; And the effect of pre-amplification circuit is exactly sampled signal gain amplifications, elimination common mode interference, and measured parameter amplitude and frequency response are good, highly sensitive, wide dynamic range; The setting of circulating sampling circuit can all be carried out circulating sampling with three output signals; The effect of buffer amplifier circuit is the single-ended signal after amplifying pre-amplification circuit; Convert differential signal to and supply A/D converter to gather, the effect of A/D converter then is to be that digital data transmission is to intelligent control module with analog signal conversion.
As preferably; Described three-component intelligence acceleration load module also comprises three groups of second-order low-pass filter circuit; The all corresponding one group of pre-amplification circuit of described each group second-order low-pass filter circuit, the output terminal of said pre-amplification circuit is electrically connected with the input end of said circulating sampling circuit through corresponding second-order low-pass filter circuit.The effect of difference low-pass filter circuit be the signal shift switch conducting or by the time undesired signal that produces carry out filtering.
As preferably; Described three-component intelligence acceleration load module also comprises three groups of gain adjusting circuits; The all corresponding one group of pre-amplification circuit of described every group of gain adjusting circuit, the control end of said pre-amplification circuit all are electrically connected with intelligent control module through corresponding gain adjusting circuit.The control end of pre-amplification circuit is electrically connected with intelligent control module and can guarantees; The Gain Adjustable of pre-amplification circuit; Because three groups of output signal strengths of three-component acceleration transducer may not be in the same order of magnitude; So the gain that the more weak signal of energy can be transferred big pre-amplification circuit, and the stronger signal of energy can be turned the gain of pre-amplification circuit down.
As preferably; Described communication output module comprises CAN bus controller, CAN bus driver and CAN EBI; The input end of said CAN bus controller and control end all are electrically connected with said intelligent control module; The output terminal of said CAN bus controller is electrically connected with the input end of said CAN bus driver, and the output terminal of said CAN bus driver is electrically connected with described CAN EBI.The utility model is applied in the detection system, and complete detection system comprises network control host computer, CAN communication bus and three-component intelligence acceleration detector.Network control host computer is the maincenter of this detection system; It gets geological data to collection and calculates, analyzes and obtain a result and show; Three-component intelligence acceleration detector is the source that obtains geological data; In whole detection system, play crucial effects, the CAN2.0 communication bus is the bridge of network control host computer and three-component intelligence acceleration detector, and various command, detecting parameter, technical parameter and a large amount of image data are all accomplished through it; And the connected mode that is connected the CAN bus communication module that is general routine successively of CAN bus controller, CAN bus driver and CAN EBI.
As preferably, described communication output module also comprises digital isolating chip, and the output terminal of said CAN bus controller is electrically connected with described CAN bus driver through described digital isolating chip.Because the input/output signal of the CAN bus controller in the communication output module and the input/output signal of CAN bus driver have bigger voltage difference; In order to protect internal circuit, between CAN bus controller and the CAN bus driver digital isolating chip is set.
As preferably, the output terminal of said CAN bus driver also is electrically connected with the surge protection module.Surge absorbs module, can absorb the momentary pulse high pressure, prevents to destroy internal circuit.
As preferably, described three-component intelligence acceleration detector also includes the program debug download interface, and the output terminal of described program debug download interface is electrically connected with described intelligent control module.The program of three-component intelligence acceleration detector is downloaded debugging and all can be carried out through the program debug download interface.
As preferably, described program debug download interface is a jtag interface.The JTAG programming mode is an online programming, flow process be first immobilising device to circuit board, again with JTAG programming, thereby speed up the work greatly, system debug is downloaded curing with program and all can be realized through it.
The beneficial effect of the utility model is: the utility model can carry out three-component comparatively accurately and measure operation, has that measured parameter amplitude and frequency response are good, highly sensitive, a wide dynamic range, advantage that antijamming capability is strong.
Description of drawings
Fig. 1 is a kind of circuit block diagram of the utility model;
Fig. 2 is the pin function principle schematic of the utility model high speed analog switch ADG604.
Among the figure: 1, intelligent control module, 11, clock circuit, 12, reset circuit, 21, pre-amplification circuit; 22, second-order low-pass filter circuit, 23, the circulating sampling circuit, 24, buffer amplifier circuit, 25, A/D converter; 26, gain adjusting circuit, 31, the CAN bus controller, 32, digital isolating chip, 33, the CAN bus driver; 34, CAN bus interface circuit, 35, the surge protection module, 4, data-carrier store; 5, program storage, 6, jtag interface, 7, the three-component acceleration transducer.
Embodiment
Below through specific embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment:
A kind of three-component intelligence acceleration detector (referring to accompanying drawing 1); By the stabilized voltage supply power supply, the power supply of digital circuit is integrated among the chip EP3C25F324C8 through design, and this chip is the Cyclone III series that U.S. altera corp produces; Performance is high, and is low in energy consumption.Three-component intelligence acceleration detector comprises intelligent control module 1; Intelligent control module 1 is the EP3C25F324C8 chip in the high-performance Cyclone III of the U.S. altera corp series, and intelligent control module 1 also is electrically connected with clock circuit 11 and reset circuit 12, and clock circuit 11 adopts high-precision MX045 crystal oscillator; Frequency is 40Mhz; Immediately following shaping chip 74LVC1G02 ﹙ U11 ﹚, so the sampling clock that draws at last is highly stable, degree of trembling is less than 5nS at the back for it.Intelligent control module 1 also is electrically connected with data-carrier store 4 and program storage 5.Data-carrier store 4 adopts general SDRAM, and concrete chip is MT48LC4M32B2B5, and capacity is the 16M byte, and access speed can reach 200M, under the control of intelligent control module 1, and the access that the geological data of sampling and data-carrier store 4 can be reliable and stable.The chip of program storage 5 is selected the serial flash EPCS16 of U.S. altera corp, and capacity is the 2M byte.In the present embodiment, debug and the interface that uses that downloads is jtag interface, jtag interface is electrically connected with intelligent control module 1, and jtag interface is ten pin jtag interfaces.
Present embodiment comprises that also wherein every group of pre-amplification circuit 21 is all to having one group of second-order low-pass filter circuit 22 and one group of gain adjusting circuit 26 by three-component acceleration transducer 7, three groups of pre-amplification circuits 21, three groups of second-order low-pass filter circuit 22, circulating sampling circuit 23, buffer amplifier circuit 24, A/D converter 25 and three groups of three-component intelligence acceleration load modules that gain adjusting circuit 26 constitutes.Three-component acceleration transducer 7 is existing high performance three-component acceleration transducer; Three-component acceleration transducer 7 includes three output terminals; Three output terminals of three-component acceleration transducer 7 are corresponding one by one with three groups of pre-amplification circuits 21, and the output terminal of each three-component acceleration transducer 7 all is electrically connected with the input end of pre-amplification circuit 21.Pre-amplification circuit 21 adopts is that model is that the instrument amplifier of INA128U is as the circuit core element; It has good performance, and offset voltage is 50 microvolts to the maximum, and temperature is floated and is 0.5uV/ ℃; Low input bias current 5nA; High cmrr minimum value 120dB, input protection voltage are ± 40V that the low-power consumption quiescent current is 700uA.The control end of three groups of pre-amplification circuits 21 is electrically connected with intelligent control module 1 through one group of corresponding gain adjusting circuit 26 respectively; Three groups of gain adjusting circuits 26 all adopt the main gain-adjusted element of high-speed analog switch ADG604 effect (referring to accompanying drawing 2), and high-speed analog switch ADG604 includes control end A0 port and A1 port, Enable Pin EN port; The single-ended conduction terminal D port of multichannel compound circuit and multichannel compound circuit multichannel conduction terminal S1 port, S2 port, S3 port and S4 port; Can select to constitute different conduction path between the different S1 of conducting, S2, S3, S4 port and the D port through A0 port, A1 port and Enable Pin EN port.Control end A0 port, the A1 port of high-speed analog switch ADG604 are electrically connected with intelligent control module 1; Receive control signal according to A0 port, A1 port; Select different S1, S2, S3, the S4 ports of conducting; Transfer to after the S1 of current signal through gating, S2, S3, the stack of S4 port and regulate instrument amplifier in the pre-amplification circuit 21, regulate the enlargement factor of pre-amplification circuit 21, thereby reach the effect of Gain Adjustable.The output terminal of three groups of pre-amplification circuits 21 input end of the second-order low-pass filter circuit 22 corresponding with a group respectively is electrically connected; That second-order low-pass filter in the second-order low-pass filter circuit 22 adopts is OPA735AIDBV, it can various switch conductions or by the time undesired signal that produces carry out filtering.The output terminal of second-order low-pass filter circuit 22 all is electrically connected with three sampling input ports of circulating sampling circuit 23.Circulating sampling circuit 23 main elements are high-speed analog switch ADG604; The S4 port ground connection of high-speed analog switch ADG604; S1 port, S2 port, S3 port are electrically connected with the output terminal of one group of second-order low-pass filter circuit 22 respectively; The A0 port of high-speed analog switch ADG604 and A1 port are electrically connected with intelligent control module 1; The D port of high-speed analog switch ADG604 is electrically connected with the input end of buffer amplifier circuit 24, is provided with like this, and intelligent control module 1 follow procedure is set the conducting state of control A0 port and A1 port; Reach through different A0 ports and A1 port conducting state and to select in S1 port, S2 port, the S3 port port and the conducting of D port, reach three tunnel sampled data timesharing from the effect of S1 port, S2 port, S3 port through D port transmission to buffer amplifier circuit 24.The output terminal of buffer amplifier circuit 24 is electrically connected with the input end of A/D converter 25, and the master chip that buffer amplifier circuit 24 adopts is ADA4941-1, and it can convert single-ended signal into the difference amplifying signal, supplies A/D converter 25 to use.The control end of A/D converter 25 and output terminal all are electrically connected with intelligent control module 1, and what A/D converter 25 adopted is the AD7760 analog to digital converter that U.S. ADI company produces, and conversion ratio is up to 2.5MSPS; Precision reaches 24, and its conversion regime is and string mode twice of continuous acquisition; 16 of parallel acquisitions are effective values for the first time, and 16 most-significant bytes of parallel acquisition are the data significance bit for the second time, and least-significant byte is the functional representation position; Can get preceding 24 of 32 figure places that twice collection draw thus is the data significance bits; High-order preceding, low level after, can under the control of intelligent control module, can carry out effective analog to digital conversion like this.
The communication output module of present embodiment comprises CAN bus controller 31, CAN bus driver 33, CAN EBI 34, digital isolating chip 32 and surge protection module 35.Intelligent control module 1 is electrically connected with the input end and the control end of CAN bus controller 31, and what CAN bus controller 31 adopted is the MCP2510 chip, and it has the SPI interface; Communication speed is 1Mb/s; WV is 2.7V～5.5V, and the electric current during work is 5 milliamperes, and quiescent current is 10 microamperes.Its control end is electrically connected nuclear with intelligent control module 1 and is connected, and receives its control to carry out data communication.The output terminal of CAN bus controller 31 is electrically connected with CAN bus driver 33 through digital isolating chip 32; The IL712 chip that numeral isolating chip 32 selects U.S. NVE company to produce; Its transfer rate is up to 150Mbps, and isolation reaches 2500VRMS, enough satisfies the requirement of communication speed.CAN bus driver 33 is selected general 82C250 chip.The output terminal of CAN bus driver 33 is electrically connected with surge protection module 35, and surge protection module 35 includes two surge absorbers, in order to absorb the momentary pulse high pressure, prevents that instantaneous pressure from destroying internal circuit.The output terminal of CAN bus driver 33 is electrically connected with CAN EBI 34, and CAN EBI 34 is selected the gold-plated socket of high-quality 2 cores, is that the key of communication robust property guarantees.
Present embodiment need insert complete detection system when using, and complete detection system comprises that network control host computer, CAN2.0 communication bus and three-component intelligence acceleration detector are present embodiment.Network control host computer is the maincenter of this detection system; It gets geological data to collection and calculates, analyzes and obtain a result and show; Three-component intelligence acceleration detector is that present embodiment is the source that obtains geological data; In whole detection system, play crucial effects, the CAN2.0 communication bus is the bridge of network control host computer and three-component intelligence acceleration detector, and various command, detecting parameter, technical parameter and a large amount of image data are all accomplished through it.Intelligent control module 1 carries out the download and the debugging of program through jtag interface 6; At working stage, the user at first resets intelligent control module 1 through reset circuit 12, the data in 1 fetch program of the intelligent control module storer 5; Carry out work then; Three-component acceleration transducer 7 carries out test job, and 7 tests of three-component acceleration transducer produce three groups of induction electromotive forces, and these three groups of induction electromotive forces amplify through three groups of pre-amplification circuits 21 respectively; The gain size of pre-amplification circuit 21 is regulated through ride gain regulating circuit 26 by intelligent control module 1; When certain group induction electromotive force was more weak, intelligent control module 1 was regulated corresponding beneficial regulating circuit 26, transfers the gain of pre-amplification circuit 21 big; When certain group induction electromotive force was strong, intelligent control module 1 was regulated corresponding beneficial regulating circuit 26, and the gain of pre-amplification circuit 21 is turned down; After three groups of pre-amplification circuit 21 gain sizes are confirmed; Single-ended signal transmission to circulating sampling circuit 23 after induction electromotive force gain amplified, in three input ends of circulating sampling circuit 23 circulation conductings one is with single-ended signal transmission to buffer amplifier circuit 24; Buffer amplifier circuit 24 converts single-ended signal into differential signal; A/D converter 25 converts differential signal into digital data transmission to intelligent control module 1, and intelligent control module 1 deposits the data that receive in data-carrier store 4, after gathered data is accomplished; Intelligent control module 1 transfers to CAN bus controller 31 through the CAN2.0 communications protocol with the gathered data signal with the data that receive; CAN bus controller 31 transfers to CAN bus driver 33 with the transmission of gathered data signal through digital isolating chip 32 according to network state, and CAN bus driver 33 is through CAN EBI 34; The gathered data signal is transferred to the CAN bus, supply the special purpose computer in the networked system to carry out analytical calculation.
Above-described embodiment is a kind of preferable scheme of the utility model, is not the utility model is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (9)
1. three-component intelligence acceleration detector; Supply power by stabilized voltage supply; Comprise intelligent control module, program storage and data-carrier store; Intelligent control module is electrically connected with clock circuit and reset circuit, and described program storage and data-carrier store all are electrically connected with intelligent control module, it is characterized in that: described three-component intelligence acceleration detector also includes three-component intelligence acceleration load module and communication output module; Described three-component intelligence acceleration load module is electrically connected with described intelligent control module, and described communication output module is electrically connected with described intelligent control module.
2. three-component intelligence acceleration detector according to claim 1; It is characterized in that: described three-component intelligence acceleration load module comprises three-component acceleration transducer, three groups of pre-amplification circuits, circulating sampling circuit, buffer amplifier circuit and A/D converters; Said three-component acceleration transducer includes three output terminals; Three output terminals of said three-component acceleration transducer are respectively to there being one group of pre-amplification circuit; Three output terminals of said three-component acceleration transducer are electrically connected with the input end of corresponding pre-amplification circuit respectively; The output terminal of said pre-amplification circuit is electrically connected with the input end of said circulating sampling circuit; Said circulating sampling circuit control end is electrically connected with described intelligent control module; The output terminal of said circulating sampling circuit is electrically connected with the input end of said buffer amplifier circuit, and the output terminal of said buffer amplifier circuit is electrically connected with the input end of A/D converter, and the output terminal of said A/D converter and control end all are electrically connected with intelligent control module.
3. three-component intelligence acceleration detector according to claim 2; It is characterized in that: described three-component intelligence acceleration load module also comprises three groups of second-order low-pass filter circuit; The all corresponding one group of pre-amplification circuit of described each group second-order low-pass filter circuit, the output terminal of said pre-amplification circuit is electrically connected with the input end of said circulating sampling circuit through corresponding second-order low-pass filter circuit.
4. three-component intelligence acceleration detector according to claim 2; It is characterized in that: described three-component intelligence acceleration load module also comprises three groups of gain adjusting circuits; The all corresponding one group of pre-amplification circuit of described every group of gain adjusting circuit, the control end of said pre-amplification circuit all are electrically connected with intelligent control module through corresponding gain adjusting circuit.
5. three-component intelligence acceleration detector according to claim 1; It is characterized in that: described communication output module comprises CAN bus controller, CAN bus driver and CAN EBI; The input end of said CAN bus controller and control end all are electrically connected with said intelligent control module; The output terminal of said CAN bus controller is electrically connected with the input end of said CAN bus driver, and the output terminal of said CAN bus driver is electrically connected with described CAN EBI.
6. three-component intelligence acceleration detector according to claim 5; It is characterized in that: described communication output module also comprises digital isolating chip, and the output terminal of said CAN bus controller is electrically connected with described CAN bus driver through described digital isolating chip.
7. according to claim 5 or 6 described three-component intelligence acceleration detectors, it is characterized in that: the output terminal of said CAN bus driver also is electrically connected with the surge protection module.
8. according to claim 1 or 2 or 3 or 4 or 5 or 6 described three-component intelligence acceleration detectors; It is characterized in that: described three-component intelligence acceleration detector also includes the program debug download interface, and the output terminal of described program debug download interface is electrically connected with described intelligent control module.
9. three-component intelligence acceleration detector according to claim 8, it is characterized in that: described program debug download interface is a jtag interface.
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| CN2011202896542U CN202217066U (en) | 2011-08-11 | 2011-08-11 | Three-component intelligent acceleration detector |
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| CN2011202896542U CN202217066U (en) | 2011-08-11 | 2011-08-11 | Three-component intelligent acceleration detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132570A (en) * | 2017-05-25 | 2017-09-05 | 嘉兴易声电子科技有限公司 | Digital hydrophone system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132570A (en) * | 2017-05-25 | 2017-09-05 | 嘉兴易声电子科技有限公司 | Digital hydrophone system |
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Owner name: SHANXI JINMINGHAI TECHNOLOGY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: YIWU ZHENXING GEOL SURVEY INSTRUMENT CO., LTD. Effective date: 20130409 |
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Free format text: CORRECT: ADDRESS; FROM: 315000 JINHUA, ZHEJIANG PROVINCE TO: 030021 TAIYUAN, SHAANXI PROVINCE |
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Effective date of registration: 20130409 Address after: 030021 Shanxi province Taiyuan city Berlin District million Lijing Garden Residential Building 8, unit 1, No. 902 Patentee after: Shanxi Jinminghai Technology Development Co., Ltd. Address before: 315000, Jinhua, Zhejiang province Yiwu Xuefeng West Road 768, Beiyuan Pioneering Park research and development building, B District, 5 floor Patentee before: Yiwu Zhenxing Geological Survey Instrument Co., Ltd. |
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Granted publication date: 20120509 Termination date: 20180811 |