CN207798875U - A kind of off-line measurement trolley of wind speed and direction - Google Patents
A kind of off-line measurement trolley of wind speed and direction Download PDFInfo
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- CN207798875U CN207798875U CN201721862098.7U CN201721862098U CN207798875U CN 207798875 U CN207798875 U CN 207798875U CN 201721862098 U CN201721862098 U CN 201721862098U CN 207798875 U CN207798875 U CN 207798875U
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- trolley
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Abstract
The utility model provides a kind of off-line measurement trolley of wind speed and direction, a kind of off-line measurement trolley of wind speed and direction, including ontology, pedestal, front wheels and rear wheels, ontology is located at impact faces, two front-wheels are connected by preceding rotation axis with pedestal respectively, two trailing wheels are connected by rear rotation axis with pedestal respectively, and it includes the first~the 4th ultrasonic transducer that body upper surface, which is equipped with ultrasonic transducer group ultrasonic transducer group,.The utility model measures planar wind speed by ultrasonic wave time difference method, the direction of motion and speed of trolley are measured in conjunction with Hall sensor and electronic compass, the wind speed and direction measured is modified to obtain accurate wind speed and direction data, and storage and real-time display are carried out to truthful data, the wind angle of actual wind speed and each reference axis after facilitating tester to observe two-dimensional curve fitting, while test data Long Distant Transmit can be further processed analysis to host computer by RS485.
Description
Technical field
The utility model is related to wind-power electricity generation field of measuring technique, more particularly to a kind of off-line measurement of wind speed and direction is small
Vehicle.
Background technology
Wind energy is exactly kinetic energy caused by air flowing, and the quality moment of wind field wind-resources affects the operation of wind energy conversion system,
An important factor for wind speed and direction is wind field, measurement it is accurate whether directly influence the research of wind field characteristic.
The measurement method of common wind speed and direction mainly has wind vane, vane, wind wheel, ultrasonic wave etc., currently, right both at home and abroad
The measurement method of wind speed and direction is mainly based on ultrasonic Method for Measuring, and ultrasonic wind meter is because with simple, maintenance side is installed
Just it, the features such as high certainty of measurement, is all widely used in industrial production and scientific experiment.Ultrasonic wind meter is in particular/special requirement
Under, it needs when being measured on the pedestal relative to measure ground motion, such as on the automobile of traveling or the ship of navigation is first-class, passes
The ultrasonic wind meter of system is because base motion can not be corrected to measuring the deviation brought to be unable to get accurate data.
Utility model content
(1) the technical issues of solving
To solve the above-mentioned problems, the utility model provides a kind of off-line measurement trolley of wind speed and direction, passes through ultrasound
Wave time difference method measures planar wind speed, and the direction of motion and speed of trolley are measured in conjunction with Hall sensor and electronic compass, right
The wind speed and direction measured is modified to obtain accurate wind speed and direction data, the measurement suitable for pedestal moving process.
(2) technical solution
A kind of off-line measurement trolley of wind speed and direction, including ontology, pedestal, front wheels and rear wheels, the ontology are located at described
Impact faces, two front-wheels are connected by preceding rotation axis with the pedestal respectively, after two trailing wheels pass through respectively
Rotation axis is connected with the pedestal, and the body upper surface is equipped with ultrasonic transducer group, the ultrasonic transducer group packet
Include the first~the 4th ultrasonic transducer, first ultrasonic transducer and second ultrasonic transducer is opposite is located at
The horizontal central line both ends of the body upper surface, first ultrasonic transducer and second ultrasonic transducer constitute super
Acoustic wave transducer transmitting-receiving pair, the third ultrasonic transducer and the 4th ultrasonic transducer it is opposite be located at the ontology
The vertical center line both ends of upper surface, the third ultrasonic transducer and the 4th ultrasonic transducer also constitute ultrasonic waves
It can device transmitting-receiving pair;Speed measuring device is arranged below in the pedestal, and the speed measuring device is located between two front-wheels, one of them
It is stained with magnet steel on the front-wheel;The ontology front is equipped with liquid crystal display, and the liquid crystal display side is equipped with keyboard, described
Keyboard is four rows, three row, 12 key board matrix;The ontology back side is equipped with battery compartment, and the battery compartment both sides are respectively equipped with SD card
Slot and RS485 interfaces;The body interior is equipped with control circuit board, and the control circuit board includes control unit, self-excited driving
Unit, signal condition unit, storage unit, key-press input unit, display unit and RS485 communication units;The base interior
Equipped with direction measuring unit, the speed measuring device is internally provided with pedestal and tests the speed unit;The key-press input unit and the keyboard
Electrical connection inputs start and stop or modification setting test parameter by the keyboard;Described control unit output drive pulse signal is sent
To the input terminal of the self-excited driving unit, the self-excited driving unit carries out self-oscillation to the excitation pulse signal, drives
The emission part of the dynamic ultrasonic transducer transmitting-receiving pair emits ultrasonic signal, and the signal condition unit is to the ultrasonic waves
Can the ultrasonic signal that is received of receiving part of device transmitting-receiving pair be amplified, filter and envelope detection, obtain the ultrasound
The arrival time data of wave signal are sent into described control unit;The direction measuring unit and the UART0 of described control unit mouths
It is connected, the measurement data of trolley travel direction is sent into described control unit;The pedestal tests the speed unit and the control singly
The UART1 mouths of member are connected, and the measurement data of trolley travel speed is sent into described control unit;Described control unit is to acquisition
Test data processing analysis, be calculated the truthful data of wind speed and direction, output connects the storage unit and the display
Unit;The storage unit and SD card slot electrical connection will calculate data and be stored in SD card;The display unit with it is described
Liquid crystal display is electrically connected, the wind angle of actual wind speed and each reference axis after the fitting of real-time display two-dimensional curve;It is described
RS485 communication units are electrically connected with the RS485 interfaces, described control unit also by the RS485 communication units with it is upper
Machine is connected, and the truthful data of the wind speed and direction, which is uploaded to the host computer, is stored and be further processed analysis.
Further, described control unit selects 32 ARM controller LPC1768.
Further, the described first~the 4th ultrasonic transducer selects FUS-200 type ultrasonic transducers.
Further, the self-excited driving unit includes pulse transformer, field-effect tube, the first and second triodes, electricity
Sense, first~third diode, the first~the 4th capacitance and the first~the 9th resistance.
Further, the signal condition unit includes amplifying circuit, filter circuit and envelope detection circuit;The amplification
Circuit includes two panels operational amplifier OP37 and RC network, and the filter circuit is the pressure that single operational amplifier TL082 is core
Voltage source second-order bandpass filter is controlled, the envelope detection circuit selects voltage comparator LM393.
Further, the direction measuring unit selects electronic compass LSM303DLH.
Further, the pedestal unit that tests the speed is selected and integrates normal open switch type Hall sensor A04E.
Further, the key-press input unit includes keyboard scan chip, keyboard, quartz crystal oscillator, the 5th~the 7th electricity
Appearance and the tenth~the 16th resistance, wherein it is four rows, three row, 12 key key that the keyboard scan chip, which selects ZLG7289, the keyboard,
Disk matrix.
Further, the display unit selects Liquid Crystal Module LCD12864.
Further, the RS485 communication units select RS485 drivers MAX487.
(3) advantageous effect
The utility model provides a kind of off-line measurement trolley of wind speed and direction, and plane two is measured by ultrasonic wave time difference method
Wind speed is tieed up, the direction of motion and speed of trolley are measured in conjunction with Hall sensor and electronic compass, the wind speed and direction measured is carried out
It corrects to obtain accurate wind speed and direction data, and storage and real-time display is carried out to truthful data, tester is facilitated to see
The wind angle of actual wind speed and each reference axis after two-dimensional curve fitting is examined, while can be by RS485 by test data long distance
From host computer is sent to be further processed analysis, simple in structure, compact, good portability, system power dissipation is low, detection
Precision is high, fast response time, and stability and good reliability, scalability is strong, easy to operate, has a wide range of application, and is suitable for pedestal
Measurement in moving process.
Description of the drawings
Fig. 1 is a kind of positive structure schematic of the off-line measurement trolley of wind speed and direction involved by the utility model.
Fig. 2 is a kind of structure schematic diagram of the off-line measurement trolley of wind speed and direction involved by the utility model.
Fig. 3 is a kind of system functional block diagram of the off-line measurement trolley of wind speed and direction involved by the utility model.
Fig. 4 is that a kind of self-excited driving element circuit of the off-line measurement trolley of wind speed and direction involved by the utility model is former
Reason figure.
Fig. 5 is that a kind of key-press input unit circuit of the off-line measurement trolley of wind speed and direction involved by the utility model is former
Reason figure.
Specific implementation mode
The embodiment involved by the utility model is described in further details below in conjunction with the accompanying drawings.
In conjunction with Fig. 1~Fig. 3, a kind of off-line measurement trolley of wind speed and direction, including ontology 1, pedestal 2, front-wheel 3 and trailing wheel 4,
Ontology 1 is located above pedestal 2, and two front-wheels 3 are connected by preceding rotation axis with pedestal 2 respectively, after two trailing wheels 4 pass through respectively
Rotation axis is connected with pedestal 2, and 1 upper surface of ontology is equipped with ultrasonic transducer group, and ultrasonic transducer group includes ultrasonic waves
Can device 5~8, ultrasonic transducer 5 and the opposite horizontal central line both ends positioned at 1 upper surface of ontology of ultrasonic transducer 6, it is ultrasonic
Wave transducer 5 and ultrasonic transducer 6 constitute ultrasonic transducer transmitting-receiving pair, 8 phase of ultrasonic transducer 7 and ultrasonic transducer
To the vertical center line both ends positioned at 1 upper surface of ontology, ultrasonic transducer 7 and ultrasonic transducer 8 also constitute ultrasonic waves
It can device transmitting-receiving pair;Speed measuring device 9 is arranged below in pedestal 2, and speed measuring device 9 is located between two front-wheels 3, on one of front-wheel 3
It is stained with magnet steel 10;1 front of ontology is equipped with liquid crystal display 11, and 11 side of liquid crystal display is equipped with keyboard 12, and keyboard 12 is four rows
Three row, 12 key board matrix;1 back side of ontology is equipped with battery compartment 13, and 13 both sides of battery compartment are respectively equipped with SD card slot 14 and RS485 connects
Mouth 15;Ontology 1 is internally provided with control circuit board, and the control circuit board includes control unit, self-excited driving unit, signal condition
Unit, storage unit, key-press input unit, display unit and RS485 communication units;Pedestal 2 is internally provided with direction measuring unit,
Speed measuring device 9 is internally provided with pedestal and tests the speed unit;Key-press input unit is electrically connected with keyboard 12, by keyboard 12 input start and stop or
Modification setting test parameter;Control unit output drive pulse signal gives the input terminal of self-excited driving unit, self-excited driving list
Member carries out self-oscillation to excitation pulse signal, and the emission part of driving ultrasonic transducer transmitting-receiving pair emits ultrasonic signal, letter
The ultrasonic signal that number conditioning unit receives the receiving part of ultrasonic transducer transmitting-receiving pair is amplified, filter and envelope is examined
Wave, the arrival time data for obtaining ultrasonic signal are sent into control unit;The UART0 mouth phases of direction measuring unit and control unit
The measurement data of trolley travel direction is sent into control unit by connection;The pedestal unit that tests the speed is connected with the UART1 of control unit mouths
It connects, the measurement data of trolley travel speed is sent into control unit;Control unit handles analysis to the test data of acquisition, calculates
Obtain the truthful data of wind speed and direction, output connection storage unit and display unit;Storage unit and SD card slot 14 are electrically connected, will
Data are calculated to be stored in SD card;Display unit is electrically connected with liquid crystal display 11, the reality after the fitting of real-time display two-dimensional curve
The wind angle of border wind speed and each reference axis;RS485 communication units are electrically connected with RS485 interfaces 15, and control unit also passes through
RS485 communication units are connected with host computer, by the truthful data of wind speed and direction be uploaded to host computer carry out storage and further
Processing analysis.
Control unit selects the controller LPC1768 of 32 ARM Cortex-M3 kernels, operating frequency to be up to
120MHz, code execution speed are up to 1.25MIPS/MHz, and have abundant interface unit.The high speed processing of LPC1768 itself
Technology will be helpful to improve the measurement accuracy and real-time of ultrasonic wind speed and direction.
Ultrasonic transducer 5~8 selects FUS-200 type ultrasonic transducers, it is that a kind of centre frequency is 200KHz
High frequency piezoelectric ultrasonic transducer, driving voltage 60V, the driving voltage with other common energy converters of identical frequency
(generally 200~400V) is compared, and has outstanding advantages of acoustic-electric high conversion efficiency, driving voltage are low, are easy to be molded.
The resonance characteristic of ultrasonic transducer itself is utilized in self-excited driving unit, then coordinates and make to surpass with external interlock circuit
Acoustic wave transducer generates concussion near resonant frequency.As shown in figure 4, self-excited driving unit includes pulse transformer T1, field effect
It should pipe QT1, triode Q1 and Q2, inductance L1, diode D1~D3, capacitance C1~C4 and resistance R1~R9.Excitation pulse signal
Resistance R1 is produced and sent to by LPC1768, driving FET QT1 is amplified by triode Q1, the access pulse of 12V voltages is become
Depressor T1 rises to 60V controls by the switching of the charge and discharge of capacitance C4 and resistance R9 the RC circuits constituted, generates the concussion of 200KHz,
Ultrasonic transducer LS1 is driven to emit ultrasonic signal.To protect subsequent amplification circuitry, in the receiving part of ultrasonic transducer group
A pair of of anti-paralleled diode D2 and D3 of connection carries out signal limiter.LPC1768 controls triode Q2 by pin level simultaneously,
Add and be connected before excitation pulse signal, after turn off, be effectively reduced the signal interference of pulse transformer T1.
The edge of the ultrasonic signal received to make LPC1768 accurately capture obtains ultrasonic signal and reaches
Correct time, signal condition need to be carried out to the ultrasonic signal that receives.Signal condition unit includes amplifying circuit, filtered electrical
Road and envelope detection circuit;Amplifying circuit includes two panels low noise, high speed width operational amplifier OP37 and RC network, theory amplification
Multiple is about 2200 times, meets the input voltage requirement of subsequent process circuit;Filter circuit is that single operational amplifier TL082 is core
The voltage controlled voltage source second-order bandpass filter of the heart, lower-cut-off frequency 100KHz, upper cut-off frequency 300KHz;Envelope detection electricity
Voltage comparator LM393 is selected on road, and influence that can be by environmental change to the amplitude of ultrasonic signal reduces to minimum, by envelope
Signal after detection is a sinusoidal signal, is at this time the arrival time of acquisition ultrasonic signal.
Direction measuring unit selects electronic compass LSM303DLH, is internally integrated there are one three number of axle word accelerometers and one
Three number of axle word Magnetic Sensors have the characteristics that at low cost, small, precision is high, good environmental adaptability, have digital interface.
Before the use, electronic compass is calibrated, to eliminate the influence in magnetic field nearby, while should be also referred to according to international earth magnetism
Region can just obtain correctly with north geographic pole in the direction value of electronic compass output plus or minus local magnetic declination
For the azimuth of reference.
The pedestal unit that tests the speed is selected and integrates normal open switch type Hall sensor A04E, when the front-wheel 3 for being stained with magnet steel 10 moves
When, magnet steel 10 is inswept fixed speed measuring device 9, the Hall sensor A04E inside speed measuring device 9 nearby changes in magnetic field, into
And causing the change of Hall sensor A04E output voltages, LPC1768 captures voltage jump edge, utilizes two inside LPC1768
A timer conter detects the time between the number of failing edge and two failing edges in the unit interval respectively, and then calculates vehicle
The rotating speed of wheel.It tests the speed compared to common GPS and photoelectric velocity measurement, Hall sensor tests the speed with signal stabilization, simple in structure, energy
The advantages that adapting to harsh environments.
Tester controls trolley start and stop and modification setting test parameter, such as trolley travel speed etc. by keyboard 12
Grade, datum, serial port baud rate etc. are also identified through RS485 interfaces 15 by keyboard 12 and data are uploaded to host computer, such as
Shown in Fig. 5, key-press input unit includes keyboard scan chip U1, keyboard 12, quartz crystal oscillator X1, capacitance C5~C7 and resistance R10
It is four rows, three row, 12 key board matrix that~R16, wherein keyboard scan chip U1, which select ZLG7289, keyboard 12,.Inside ZLG7289
Containing decoder, there is serial line interface, monolithic the repertoire of 12 interface of keyboard, external four rows, three row, 12 key board can be completed
Matrix, when having by key pressing, KEY feet can become low level, and institute's key value can be read using instruction.
Display unit selects Liquid Crystal Module LCD12864, and two-dimensional curve is carried out to the true wind speed and direction data being calculated
The wind angle of real-time display actual wind speed and each reference axis after fitting, facilitates tester to get information about measurement feelings in time
Condition makes it work in the state of high conversion efficiency to determine the combustion adjustment scheme of wind energy conversion system.
Actual wind speed and direction data are also uploaded to host computer by LPC1768 by RS485 communication units, and RS485 is maximum
Communication distance be about 1219m, peak transfer rate 10Mbps, the line between host computer only needs simply to use a pair of double
" A ", the end " B " are connected and communication can be realized by twisted wire, very convenient, fully meet what off-line measurement system was transmitted at a distance
It is required that.RS485 communication units select RS485 driver MAX487, and two Enable Pins of the RE of MAX487 and DE are connected together, are made
The state that MAX487 is in a certain determination can work, and also save the I/O mouths of LPC1768.
The utility model provides a kind of off-line measurement trolley of wind speed and direction, and plane two is measured by ultrasonic wave time difference method
Wind speed is tieed up, the direction of motion and speed of trolley are measured in conjunction with Hall sensor and electronic compass, the wind speed and direction measured is carried out
It corrects to obtain accurate wind speed and direction data, and storage and real-time display is carried out to truthful data, tester is facilitated to see
The wind angle of actual wind speed and each reference axis after two-dimensional curve fitting is examined, while can be by RS485 by test data long distance
From host computer is sent to be further processed analysis, simple in structure, compact, good portability, system power dissipation is low, detection
Precision is high, fast response time, and stability and good reliability, scalability is strong, easy to operate, has a wide range of application, and is suitable for pedestal
Measurement in moving process.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel conception and scope is defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With novel claimed technology contents, all record in detail in the claims.
Claims (10)
1. a kind of off-line measurement trolley of wind speed and direction, including ontology, pedestal, front wheels and rear wheels, the ontology is located at the base
Above, two front-wheels are connected by preceding rotation axis with the pedestal seat respectively, and two trailing wheels turn after passing through respectively
Moving axis is connected with the pedestal, it is characterised in that:The body upper surface is equipped with ultrasonic transducer group, the ultrasonic waves
Energy device group includes the first~the 4th ultrasonic transducer, first ultrasonic transducer and the second ultrasonic transducer phase
To positioned at the horizontal central line both ends of the body upper surface, first ultrasonic transducer and second ultrasonic wave transducer
Device constitutes ultrasonic transducer transmitting-receiving pair, the third ultrasonic transducer and the 4th ultrasonic transducer is opposite is located at
The vertical center line both ends of the body upper surface, the third ultrasonic transducer and the 4th ultrasonic transducer are also constituted
Ultrasonic transducer transmitting-receiving pair;Speed measuring device is arranged below in the pedestal, and the speed measuring device is located between two front-wheels,
It is stained with magnet steel on one of them described front-wheel;The ontology front is equipped with liquid crystal display, and the liquid crystal display side is equipped with
Keyboard, the keyboard are four rows, three row, 12 key board matrix;The ontology back side is equipped with battery compartment, the battery compartment both sides difference
Equipped with SD card slot and RS485 interfaces;The body interior be equipped with control circuit board, the control circuit board include control unit,
Self-excited driving unit, signal condition unit, storage unit, key-press input unit, display unit and RS485 communication units;It is described
Base interior is equipped with direction measuring unit, and the speed measuring device is internally provided with pedestal and tests the speed unit;The key-press input unit with
The keyboard electrical connection inputs start and stop or modification setting test parameter by the keyboard;Described control unit output drive arteries and veins
The input terminal that signal gives the self-excited driving unit is rushed, the self-excited driving unit carries out self-excitation to the excitation pulse signal
Concussion drives the emission part transmitting ultrasonic signal of the ultrasonic transducer transmitting-receiving pair, and the signal condition unit is to described
The ultrasonic signal that is received of receiving part of ultrasonic transducer transmitting-receiving pair is amplified, filters and envelope detection, obtains
The arrival time data of the ultrasonic signal are sent into described control unit;The direction measuring unit and described control unit
UART0 mouthfuls are connected, and the measurement data of trolley travel direction is sent into described control unit;The pedestal test the speed unit with it is described
The UART1 mouths of control unit are connected, and the measurement data of trolley travel speed is sent into described control unit;Described control unit
Analysis is handled to the test data of acquisition, the truthful data of wind speed and direction is calculated, output connects the storage unit and institute
State display unit;The storage unit and SD card slot electrical connection will calculate data and be stored in SD card;The display unit
It is electrically connected with the liquid crystal display, the wind angle of actual wind speed and each reference axis after the fitting of real-time display two-dimensional curve;
The RS485 communication units are electrically connected with the RS485 interfaces, described control unit also by the RS485 communication units with
Host computer is connected, and the truthful data of the wind speed and direction, which is uploaded to the host computer, to be stored and be further processed point
Analysis.
2. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:Described control unit is selected
With 32 ARM controller LPC1768.
3. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:Described first~the 4th
Ultrasonic transducer selects FUS-200 type ultrasonic transducers.
4. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The self-excited driving list
Member includes pulse transformer, field-effect tube, the first and second triodes, inductance, first~third diode, the first~the 4th electricity
Hold and the first~the 9th resistance.
5. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The signal condition list
Member includes amplifying circuit, filter circuit and envelope detection circuit;The amplifying circuit includes two panels operational amplifier OP37 and RC
Network, the filter circuit are the voltage controlled voltage source second-order bandpass filter that single operational amplifier TL082 is core, the envelope
Detecting circuit selects voltage comparator LM393.
6. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The orientation measurement list
Member selects electronic compass LSM303DLH.
7. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The pedestal tests the speed list
Member, which is selected, integrates normal open switch type Hall sensor A04E.
8. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The key-press input list
Member includes keyboard scan chip, keyboard, quartz crystal oscillator, the 5th~the 7th capacitance and the tenth~the 16th resistance, wherein the key
It is four rows, three row, 12 key board matrix that sweeping, which retouches chip and selects ZLG7289, the keyboard,.
9. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The display unit choosing
With Liquid Crystal Module LCD12864.
10. a kind of off-line measurement trolley of wind speed and direction according to claim 1, it is characterised in that:The RS485 communications
Unit selects RS485 drivers MAX487.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111089985A (en) * | 2018-10-23 | 2020-05-01 | 丰田自动车株式会社 | Information processing system, nonvolatile storage medium storing program, and information processing method |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111089985A (en) * | 2018-10-23 | 2020-05-01 | 丰田自动车株式会社 | Information processing system, nonvolatile storage medium storing program, and information processing method |
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Effective date of registration: 20190530 Address after: 030000 Shanxi Taiyuan City Shanxi Comprehensive Reform Demonstration Zone Taiyuan Tanghuai Park Hengjian Company Complex Building 2 Floor 201 Patentee after: Shanxi Luyuan Environmental Protection Group Co., Ltd. Address before: 313000 208, room 2, 212 Hongqi Road, Wuxing District, Huzhou, Zhejiang. Patentee before: Huzhou inspiration Electronic Technology Co., Ltd. |