CN107498769A - Rolling mill roller skew correction circuitry - Google Patents
Rolling mill roller skew correction circuitry Download PDFInfo
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- CN107498769A CN107498769A CN201710717729.4A CN201710717729A CN107498769A CN 107498769 A CN107498769 A CN 107498769A CN 201710717729 A CN201710717729 A CN 201710717729A CN 107498769 A CN107498769 A CN 107498769A
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- deflection angle
- signal
- triode
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- 238000005096 rolling process Methods 0.000 title claims abstract description 26
- 238000012937 correction Methods 0.000 title claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000006641 stabilisation Effects 0.000 claims abstract description 6
- 238000011105 stabilization Methods 0.000 claims abstract description 6
- 239000003381 stabilizer Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/585—Measuring, controlling or regulating detecting defects, e.g. foreign matter between the moulds, inaccurate position, breakage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of rolling mill roller skew correction circuitry, including deflection angle signal acquisition circuit, deflection angle deviation signal process circuit and drive circuit, the collection rolling mill roller deflection angle signal of angular displacement sensor H1 collections, when the current potential of output signal is below+4V, triode Q1 is turned on, resistance R1 and resistance R2, R5, R6 is in parallel, raise the signal potential in inflow lc circuit, stabilization is more than+4V, when the current potential of output signal is more than+8V, triode Q2 is turned on, reduce the signal potential in inflow lc circuit, stabilization is below+8V, improve the precision of measurement；Angle signal is deflected compared with the two threshold values deflection angle signal for the window circuit that operational amplifier A R2, AR3 forms, opposite, the scaling abnormal deflection angle deviation signal of output, directly make positive, the reverse deviation correcting signal of rolling mill roller motor after drive circuit is changed into proportional pulse width rectangular pulse deviation signal, quickly, accurate correction, improves correction accuracy.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to rolling mill roller skew correction circuitry.
Background technology
In the processing of PVC electrical adhesive tapes, calender technique is an important link, it is necessary to its efficiency high, precise operation,
This is a feature of PVC calenders work, and roller deflection is difficult to control during the work of PVC calenders, is often occurred inclined
Tiltedly, some deflections can all influence the processing effect of product, how PVC rolling mill rollers are accurately rectified a deviation and improve work and imitated
Rate, is the technical problem that PVC calenders are studied always, and researcher is always constantly to the improved purpose of PVC calenders,
The scheme mainly used at present is by gathering rolling mill roller deflective displacement or tach signal, and analysis is judged to rolling mill roller
Skew correction, but precision is inaccurate, error is still very big.
So the present invention provides a kind of new scheme to solve this problem.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the present invention is to provide rolling mill roller deflection
Correcting circuit, have be skillfully constructed, the characteristic of human oriented design, using rolling mill roller angle excursion signal as calendar rolls
The signal source of cylinder skew correction, it is effectively improved the precision of rolling mill roller skew correction.
Its technical scheme solved is rolling mill roller skew correction circuitry, including deflection angle signal acquisition circuit, deflection
Angular displacement signal processing circuit and drive circuit, it is characterised in that the deflection angle signal acquisition circuit gathers rolling mill roller
Angle signal is deflected, and deflection angle signal stabilization is inputted in deflection angle deviation signal process circuit in+4-+8V, deflection angle is inclined
Difference signal process circuit utilizes ± 0 to 30 deflection angle deviation signal of window circuit principle output abnormality, and this signal is driving
The drive signal of circuit, the regulation of deflection angle deviation signal is changed into proportional pulse width rectangular pulse deviation by drive circuit to be believed
Number, it that is to say roller motor forward drive signal or roller motor reverse drive signals；
The deflection angle signal acquisition circuit includes model TDJ-1 angular displacement sensor H1, angular displacement sensor H1 power supply
Termination+3V, angular displacement sensor H1 earth terminal ground connection, angular displacement sensor H1 output end output 0-+10V deflection angle are inclined
Difference signal, is two branch circuits through resistance R1-R2 parallel connections partial pressure, and a branch circuit flows through triode Q1 emitter stage, collection through resistance R1
Electrode, flow into the lc circuit that inductance L1 and electric capacity C4 is composed in parallel, another branch circuit is through resistance R2 connection resistance R3, R5
The emitter stage of one end and triode Q1 base stage and triode Q2, resistance R5 another termination triode Q2 colelctor electrode and electricity
R6 one end and voltage-stabiliser tube DZ1 anode are hindered, the lc circuit finally composed in parallel by resistance R6 inflows inductance L1 and electric capacity C4
It is interior, wherein resistance R3 another terminating resistor R4 one end and triode Q2 base stage, resistance the R4 other end, voltage-stabiliser tube DZ1
Negative electrode and voltage-stabiliser tube DZ1 anode altogether end points ground connection, the negative electrode connecting resistance R6 of the voltage-stabiliser tube other end.
Preferably, the deflection angle deviation signal process circuit includes operational amplifier A R2, AR3, deflection angle signal acquisition
The deflection angle signal for the lc circuit output that circuit is finally composed in parallel by inductance L1 and electric capacity C4 divides two-way to flow into deflection angular displacement
In signal processing circuit, flow directly into all the way in operational amplifier A R2 in-phase input end, another way is flowed into through resistance R16 and transported
In calculation amplifier AR3 in in-phase input end, it is respectively connected between the in-phase input end and output end of operational amplifier A R2, AR3 anti-
Current feed circuit, operational amplifier A R2 feedback circuits are parallel with resistance R17 and electric capacity C5, and operational amplifier A R3 feedback circuits are parallel with
Resistance R18 and electric capacity C1, operational amplifier A R2 inverting input receive power supply+5V resistance after resistance R7-R9 connects partial pressure
R8 voltage, operational amplifier A R3 inverting input receive power supply+5V resistance R9 after resistance R7-R9 partial pressures voltage.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art：
The collection rolling mill roller deflection angle signal of 1, angular displacement sensor H1 collection, when the current potential of output signal is below+4V,
Triode Q1 is turned on, and resistance R1 and resistance R2, R5, R6 are in parallel, raise the signal potential in inflow lc circuit, stable in+4V
More than, when the current potential of output signal is more than+8V, triode Q2 conductings, resistance R3 is short-circuited, and makes the signal in inflow lc circuit
Current potential reduces, stable below+8V, improves the precision of measurement；
2, the two threshold values deflection angle signal for the window circuit that deflection angle signal forms with operational amplifier A R2, AR3 is compared
Compared with exporting opposite, scaling abnormal deflection angle deviation signal, be changed into proportional pulse width rectangle through drive circuit
Directly make positive, the reverse deviation correcting signal of rolling mill roller motor after pulse deviation signal, quick, accurate correction, improve school
Positive precision.
Brief description of the drawings
Fig. 1 is the module map of rolling mill roller skew correction circuitry of the present invention.
Fig. 2 is the circuit theory diagrams of rolling mill roller skew correction circuitry of the present invention.
Embodiment
For the present invention foregoing and other technology contents, feature and effect, in following cooperation with reference to figures 1 through accompanying drawing 2
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following examples, it is with specification
Accompanying drawing is reference.
Each exemplary embodiment of the present invention is described below with reference to accompanying drawings.
Embodiment one, rolling mill roller skew correction circuitry, the deflection angle signal acquisition circuit gather rolling mill roller
Angle signal is deflected, and by deflection angle signal stabilization in+4-+8V, is input in deflection angle deviation signal process circuit, deflection angle
Deviation signal process circuit utilizes the deflection angle deviation signal of window circuit principle output abnormality, and this signal is the drive of drive circuit
The regulation of deflection angle deviation signal is changed into proportional pulse width rectangular pulse deviation signal by dynamic signal, drive circuit, namely
It is roller motor forward drive signal or roller motor reverse drive signals；The deflection angle signal acquisition circuit selects model
TDJ-1 angular displacement sensor H1 collection rolling mill roller deflection angle signals, its output signal voltage scope is 0-+10V, angle position
Displacement sensor H1 power supply termination+3V, angular displacement sensor H1 earth terminal ground connection, angular displacement sensor H1 output end output
0-+10V deflection angle deviation signal, is two branch circuits through resistance R1-R2 parallel connections partial pressure, and a branch circuit flows through three poles through resistance R1
Pipe Q1 emitter stage, colelctor electrode, flow into the lc circuit that inductance L1 and electric capacity C4 is composed in parallel, another branch circuit is through resistance R2
Connect resistance R3, R5 one end and triode Q1 base stage and triode Q2 emitter stage, the resistance R5 pole of another termination three
Pipe Q2 colelctor electrode and resistance R6 one end and voltage-stabiliser tube DZ1 anode, inductance L1 and electric capacity C4 is finally flowed into by resistance R6
In the lc circuit composed in parallel, wherein resistance R3 another terminating resistor R4 one end and triode Q2 base stage, resistance R4's
End points is grounded the anode of the other end, voltage-stabiliser tube DZ1 negative electrode and voltage-stabiliser tube DZ1 altogether, and the negative electrode connecting resistance R6's of voltage-stabiliser tube is another
One end, when the current potential of angular displacement sensor H1 output signals is below+4V, triode Q1 conductings, resistance R1 and resistance R2,
R5, R6 are in parallel, the signal potential rise flowed into lc circuit, stable more than+4V, when angular displacement sensor H1 output signals
When current potential is more than+8V, triode Q2 conductings, resistance R3 is short-circuited, and the signal potential flowed into lc circuit reduces, it is stable+
Below 8V, therefore deflection angle signal acquisition circuit flows into the signal potential stabilization of deflection angle deviation signal process circuit in+4V-+
In 8V.
Embodiment two, on the basis of embodiment one, the deflection angle deviation signal process circuit will deflect angle signal with
Two threshold values deflection angle signal of the window circuit of operational amplifier A R2, AR3 composition is compared, and is exported opposite, ratio and is put
Big abnormal deflection angle deviation signal, the lc circuit that deflection angle signal acquisition circuit is finally composed in parallel by inductance L1 and electric capacity C4
The deflection angle signal of output divides two-way to flow into deflection angle deviation signal process circuit, flows directly into operational amplifier A R2 all the way
In-phase input end in, another way is flowed into operational amplifier A R3 in in-phase input end through resistance R16, operational amplifier A R2,
Feedback circuit is respectively connected between AR3 in-phase input end and output end, operational amplifier A R2 feedback circuits are parallel with resistance
R17 and electric capacity C5, operational amplifier A R3 feedback circuits are parallel with resistance R18 and electric capacity C1, and electric capacity C1 is compensating electric capacity, is prevented
Self-excitation, operational amplifier A R2 inverting input receive power supply+5V resistance R8 after resistance R7-R9 connects partial pressure voltage, are
Voltage corresponding to 0 to 30 positivity bias, operational amplifier A R3 inverting input receive power supply+5V through resistance R7-R9 partial pressures
Resistance R9 voltage afterwards, it is voltage corresponding to 0 to -30 Reversal value.
Embodiment three, on the basis of embodiment two, the drive circuit is by opposite, scaling abnormal deflection angle
Bias changing signal is proportional pulse width rectangular pulse deviation signal, including forward drive circuit and reverse driving circuit,
Reverse driving circuit includes diode D1, and diode D1 anode connects operational amplifier A R2 output end, diode D1 negative electrode
Connecting resistance R10 and one end with electric capacity C2, resistance R10 and electric capacity C2 another terminating resistor R12 one end and triode Q3's
Base stage, triode Q3 emitter stage and resistance R12 other end ground connection, triode Q3 colelctor electrode connecting resistance R13 one end, electricity
Another termination power+5V of R13 are hindered, when promising 0 to 30 positivity bias exports, triode Q3 conductings, triode Q3 current collection
Pole exports low level effective impulse to roller motor, roller motor reversal, positive correction is carried out, until there is the invalid arteries and veins of high level
Punching；Forward drive circuit includes diode D2, and diode D2 anode connects operational amplifier A R2 output end, diode D2's
Negative electrode connecting resistance R11 and one end with electric capacity C3, resistance R11 and electric capacity C3 another terminating resistor R15 one end and triode
Q4 base stage, triode Q4 emitter stage and resistance R15 other end ground connection, the one of triode Q4 colelctor electrode connecting resistance R14
End, another termination power+5V of resistance R14, similarly, and when promising 0 to -30 Reversal value exports, triode Q4 conductings, three poles
Pipe Q4 colelctor electrode exports low level effective impulse and rotates forward, reversely rectified a deviation to roller motor, roller motor, until occurring high
Level idler Pulse.
When the present invention is specifically used, rolling mill roller deflection angle letter is gathered from model TDJ-1 angular displacement sensor H1
Number, 0-+10V deflection angle deviation signal is exported, is two branch circuits through resistance R1-R2 parallel connections partial pressure, as angular displacement sensor H1
When the current potential of output signal is below+4V, triode Q1 conductings, resistance R1 and resistance R2, R5, R6 are in parallel, flow into lc circuit
Signal potential rise, it is stable more than+4V, when the current potential of angular displacement sensor H1 output signals is more than+8V, triode
Q2 is turned on, and resistance R3 is short-circuited, and the signal potential flowed into lc circuit reduces, stable below+8V, therefore is deflected angle signal and adopted
The signal potential that collector flows into deflection angle deviation signal process circuit is stable in+4V-+8V, divides two-way to flow into deflection afterwards
In angular displacement signal processing circuit, flow directly into all the way in operational amplifier A R2 in-phase input end, with operational amplifier A R2
Inverting input upper 0 to 30 positivity biases of resistance R8 corresponding to voltage be compared, resistance R17 and electric capacity C5 composition
Feedback circuit it is anti-phase it is scaling after, drive reverse driving circuit, triode Q3 conductings, triode Q3 colelctor electrode exports low electricity
Flat effective impulse roller motor reversal, carries out positive correction, until there is high level idler Pulse, another way to roller motor
Flowed into through resistance R16 in operational amplifier A R3 in in-phase input end, the resistance R9 with operational amplifier A R3 inverting input
Voltage corresponding to upper 0 to -30 positivity bias is compared, and the anti-phase ratio of feedback circuit of resistance R18 and electric capacity C1 compositions is put
After big, forward drive circuit, triode Q4 conductings are driven, triode Q3 colelctor electrode exports low level effective impulse to roller electricity
Machine, roller motor is rotated forward, reversely rectified a deviation, until there is high level idler Pulse.
Described above is to combine embodiment further description made for the present invention, it is impossible to assert the present invention
Specific implementation is limited only to this；For belonging to the present invention and for those skilled in the technology concerned, based on skill of the present invention
Under the premise of art scheme thinking, the expansion made and operating method, the replacement of data, should all fall the scope of the present invention it
It is interior.
Claims (3)
1. rolling mill roller skew correction circuitry, including deflection angle signal acquisition circuit, deflection angle deviation signal process circuit and
Drive circuit, it is characterised in that deflection angle signal acquisition circuit collection rolling mill roller deflection angle signal, and by deflection angle
Signal stabilization is inputted in+4-+8V in deflection angle deviation signal process circuit, and deflection angle deviation signal process circuit utilizes window
± 0 to 30 deflection angle deviation signal of circuit theory output abnormality, this signal be drive circuit drive signal, drive circuit
The regulation of deflection angle deviation signal is changed into proportional pulse width rectangular pulse deviation signal, that is to say that roller motor is positive and drive
Dynamic signal or roller motor reverse drive signals；
The deflection angle signal acquisition circuit includes model TDJ-1 angular displacement sensor H1, angular displacement sensor H1 power supply
Termination+3V, angular displacement sensor H1 earth terminal ground connection, angular displacement sensor H1 output end output 0-+10V deflection angle are inclined
Difference signal, is two branch circuits through resistance R1-R2 parallel connections partial pressure, and a branch circuit flows through triode Q1 emitter stage, collection through resistance R1
Electrode, flow into the lc circuit that inductance L1 and electric capacity C4 is composed in parallel, another branch circuit is through resistance R2 connection resistance R3, R5
The emitter stage of one end and triode Q1 base stage and triode Q2, resistance R5 another termination triode Q2 colelctor electrode and electricity
R6 one end and voltage-stabiliser tube DZ1 anode are hindered, the lc circuit finally composed in parallel by resistance R6 inflows inductance L1 and electric capacity C4
It is interior, wherein resistance R3 another terminating resistor R4 one end and triode Q2 base stage, resistance the R4 other end, voltage-stabiliser tube DZ1
Negative electrode and voltage-stabiliser tube DZ1 anode altogether end points ground connection, the negative electrode connecting resistance R6 of the voltage-stabiliser tube other end.
2. rolling mill roller skew correction circuitry as claimed in claim 1, it is characterised in that the deflection angle deviation signal processing
Circuit includes operational amplifier A R2, AR3, the LC that deflection angle signal acquisition circuit is finally composed in parallel by inductance L1 and electric capacity C4
The deflection angle signal of circuit output divides two-way to flow into deflection angle deviation signal process circuit, flows directly into operational amplifier all the way
In AR2 in-phase input end, another way is flowed into operational amplifier A R3 in in-phase input end through resistance R16, operational amplifier
Feedback circuit is respectively connected between AR2, AR3 in-phase input end and output end, operational amplifier A R2 feedback circuits are parallel with electricity
R17 and electric capacity C5 is hindered, operational amplifier A R3 feedback circuits are parallel with resistance R18 and electric capacity C1, and operational amplifier A R2's is anti-phase
Input receives power supply+5V resistance R8 after resistance R7-R9 connects partial pressure voltage, operational amplifier A R3 inverting input
Receive power supply+5V resistance R9 after resistance R7-R9 partial pressures voltage.
3. rolling mill roller skew correction circuitry as claimed in claim 2, it is characterised in that the drive circuit includes positive drive
Dynamic circuit and reverse driving circuit, forward drive circuit include diode D1, and diode D1 anode connects operational amplifier A R2's
Output end, diode D1 negative electrode connecting resistance R10 and electric capacity C2 one end, resistance R10 and electric capacity C2 another terminating resistor R12
One end and triode Q3 base stage, triode Q3 emitter stage and resistance R12 other end ground connection, triode Q3 colelctor electrode
Connecting resistance R13 one end, another termination power+5V of resistance R13；
Reverse driving circuit includes diode D2, and diode D2 anode connects operational amplifier A R2 output end, diode D2's
Negative electrode connecting resistance R11 and electric capacity C3 one end, resistance R11 and electric capacity C3 another terminating resistor R15 one end and triode Q4
Base stage, triode Q4 emitter stage and resistance R15 other end ground connection, triode Q4 colelctor electrode connecting resistance R14 one end,
Another termination power+5V of resistance R14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717729.4A CN107498769B (en) | 2017-08-21 | 2017-08-21 | Rolling mill roller skew correction circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717729.4A CN107498769B (en) | 2017-08-21 | 2017-08-21 | Rolling mill roller skew correction circuitry |
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| Publication Number | Publication Date |
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| CN107498769A true CN107498769A (en) | 2017-12-22 |
| CN107498769B CN107498769B (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710717729.4A Active CN107498769B (en) | 2017-08-21 | 2017-08-21 | Rolling mill roller skew correction circuitry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194358A (en) * | 2018-09-30 | 2019-01-11 | 蔡长明 | Hydrographic water resource data transmission system based on Internet of Things |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139308A (en) * | 1995-06-09 | 1997-01-01 | 三菱电机株式会社 | Rectifier control system |
| CN204367268U (en) * | 2014-12-22 | 2015-06-03 | 天津市津南区伟超橡塑制品厂 | Be provided with the rolling equipment of gap automatic adjusting mechanism |
| CN206374106U (en) * | 2016-11-05 | 2017-08-04 | 上海美尔耐密胺制品有限公司 | A kind of melamine dishware forming machine |
-
2017
- 2017-08-21 CN CN201710717729.4A patent/CN107498769B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139308A (en) * | 1995-06-09 | 1997-01-01 | 三菱电机株式会社 | Rectifier control system |
| CN204367268U (en) * | 2014-12-22 | 2015-06-03 | 天津市津南区伟超橡塑制品厂 | Be provided with the rolling equipment of gap automatic adjusting mechanism |
| CN206374106U (en) * | 2016-11-05 | 2017-08-04 | 上海美尔耐密胺制品有限公司 | A kind of melamine dishware forming machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194358A (en) * | 2018-09-30 | 2019-01-11 | 蔡长明 | Hydrographic water resource data transmission system based on Internet of Things |
| CN109194358B (en) * | 2018-09-30 | 2020-05-26 | 蔡长明 | Hydrology water resource data transmission system based on thing networking |
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| Publication number | Publication date |
|---|---|
| CN107498769B (en) | 2019-08-06 |
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Effective date of registration: 20190705 Address after: 071800 Zhugezhuang Industrial Park, Xiong County, Baoding City, Hebei Province Applicant after: Baoding Dipeng Industrial Co., Ltd. Address before: 457000 fan County Industrial Cluster, Puxian Industrial Park, Puyang, Henan Province Applicant before: Puyang Tai Pu adhesive article Co., Ltd |
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