CN208044392U - Distributed Real Time Data Acquisition system - Google Patents
Distributed Real Time Data Acquisition system Download PDFInfo
- Publication number
- CN208044392U CN208044392U CN201820646211.6U CN201820646211U CN208044392U CN 208044392 U CN208044392 U CN 208044392U CN 201820646211 U CN201820646211 U CN 201820646211U CN 208044392 U CN208044392 U CN 208044392U
- Authority
- CN
- China
- Prior art keywords
- signal
- transport
- placing device
- circuit
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses Distributed Real Time Data Acquisition systems,Including signal frequency Acquisition Circuit,Differential feedback circuit and warning circuit,Control terminal receives the signal frequency in the signal transmission passage of signal in the signal frequency Acquisition Circuit acquisition Distributed Real Time Data Acquisition system,With inductance L1 and capacitance C2,After the π type filter circuits filtering of capacitance C3 compositions in input difference feedback circuit,The differential feedback circuit uses transport and placing device AR1,Transport and placing device AR2 and slide rheostat RW1 composition difference channels carry out difference processing,And it devises triode Q2 feedback signals and inputs in the in-phase input end of transport and placing device AR1,Adjust differential feedback circuit output signal,And the triode regulator circuit voltage stabilizing of triode Q3 and voltage-stabiliser tube D7 compositions are used,Last warning circuit receives the signal of differential feedback circuit input,Detection Distributed Real Time Data Acquisition system control terminal receives the signal in the signal transmission passage of signal in real time,When abnormal signal,And can and alarm.
Description
Technical field
The utility model is related to alarm system technical fields, more particularly to Distributed Real Time Data Acquisition system.
Background technology
Today of internet industry fast development, data acquisition have been widely used in internet and field of distributed type,
Data collecting field has occurred that important variation, first, the intelligent data acqusition system in distributed AC servo system application scenario
Significant progress is at home and abroad had been achieved for, and Distributed Real Time Data Acquisition system needs in real time to distributed real-time data
The signal frequency that acquisition system control terminal receives in the signal transmission passage of signal is detected, and can make phase in time
It answers.
So the utility model provides a kind of new scheme to solve the problems, such as this.
Utility model content
For the above situation, to overcome the defect of the prior art, being designed to provide for the utility model distributed real-time
Data collecting system, have be skillfully constructed, the characteristic of human oriented design, Distributed Real Time Data Acquisition system can be detected in real time
Control terminal receives the signal in the signal transmission passage of signal, when abnormal signal, and energy and alarm.
Its technical solution solved is that Distributed Real Time Data Acquisition system, including signal frequency Acquisition Circuit, difference are anti-
Current feed circuit and warning circuit, the signal frequency Acquisition Circuit, differential feedback circuit and warning circuit, the signal frequency acquisition
Circuit acquires the signal frequency in the signal transmission passage of control terminal reception signal in Distributed Real Time Data Acquisition system,
After being filtered with the π type filter circuits of inductance L1 and capacitance C2, capacitance C3 compositions in input difference feedback circuit, the difference is anti-
Current feed circuit carries out difference processing with transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 composition difference channels, designs simultaneously
Comparator AR3 compares transport and placing device AR1, transport and placing device AR2 output signals, and devises triode Q2 feedback signals input transport and placing device
In the in-phase input end of AR1, differential feedback circuit output signal is adjusted, and has used the three of triode Q3 and voltage-stabiliser tube D7 compositions
Pole pipe regulator circuit voltage stabilizing, last warning circuit receive the signal of differential feedback circuit input, when abnormal signal, warning circuit
Work alarm；
The differential feedback circuit includes transport and placing device AR1, the cathode of the homophase input termination diode D1 of transport and placing device AR1 and
The anti-phase input of the collector of triode Q2, transport and placing device AR1 terminates the contact 1 of slide resistor RW1, contact 2 and resistance R5
One end, the other end of the in-phase input end and resistance R5 of the output termination comparator AR3 of transport and placing device AR1, slide rheostat RW1's
The inverting input of one end and transport and placing device AR2 of 3 connecting resistance R4 of contact, the homophase input termination diode D3's of transport and placing device AR2
Cathode, the inverting input of the other end and comparator AR3 of the output terminating resistor R4 of transport and placing device AR2, the output of comparator AR3
Terminate one end of the base stage and resistance R6 of triode Q2, the collector of another termination triode Q3 of resistance R6 and the one of resistance R8
End, one end of the emitter connecting resistance R7 of triode Q2, another termination power+5V of resistance R7, the base stage of triode Q3 connect electricity
The cathode of the other end and voltage-stabiliser tube D7 of resistance R8, the plus earth of voltage-stabiliser tube D7, the one of the emitter connecting resistance R9 of triode Q3
End.
Compared with prior art, the beneficial effects of the utility model are as follows：
1. signal frequency Acquisition Circuit acquires the letter that control terminal in Distributed Real Time Data Acquisition system receives signal
Signal frequency in number transmission channel, with inductance L1 and capacitance C2, capacitance C3 compositions the filtering of π type filter circuits after input it is poor
Divide in feedback circuit, the differential feedback circuit forms differential electrical with transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1
Road carries out difference processing, while devising comparator AR3 and comparing transport and placing device AR1, transport and placing device AR2 output signals, and devises three
Pole pipe Q2 feedback signals input in the in-phase input end of transport and placing device AR1, adjust differential feedback circuit output signal, and used three
The triode regulator circuit voltage stabilizing of pole pipe Q3 and voltage-stabiliser tube D7 compositions, last warning circuit receive the letter of differential feedback circuit input
Number, the letter in the signal transmission passage of Distributed Real Time Data Acquisition system control terminal reception signal can be detected in real time
Number, when abnormal signal, and energy and alarm.
2. differential feedback circuit is carried out with transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 composition difference channels
Difference processing stabilizes the quiescent operation value of signal, by adjust slide rheostat RW1 resistance value also can Regulate signal static state
Working value, while devising comparator AR3 and comparing transport and placing device AR1, transport and placing device AR2 output signals, and it is anti-to devise triode Q2
Feedback signal inputs in the in-phase input end of transport and placing device AR1, when comparator AR3 output signal current potentials are relatively low, is not enough to driving alarm
When circuit works, triode Q2 is PNP triode, and triode Q2 is connected at this time, and power supply+5V is played to be inputted after resistance R7 partial pressures
In the in-phase input end of transport and placing device AR1, the effect of thermal compensation signal is played, while also having the effect of amplified signal, reaches adjusting
The purpose of differential feedback circuit output signal, and used the triode regulator circuit of triode Q3 and voltage-stabiliser tube D7 compositions steady
Pressure, improves the stability of signal.
Description of the drawings
Fig. 1 is the signal acquisition processing circuit module map of the utility model.
Fig. 2 is the signal acquisition processing circuit schematic diagram of the utility model.
Specific implementation mode
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 is in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Embodiment one, Distributed Real Time Data Acquisition system, including signal frequency Acquisition Circuit, differential feedback circuit and report
Alert circuit, the signal frequency Acquisition Circuit, differential feedback circuit and warning circuit, the signal frequency Acquisition Circuit acquisition point
Control terminal receives the signal frequency in the signal transmission passage of signal in cloth real-time data acquisition system, with inductance L1
After being filtered with the π type filter circuits of capacitance C2, capacitance C3 compositions in input difference feedback circuit, the differential feedback circuit uses
Transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 composition difference channels carry out difference processing, while devising comparator
AR3 compares transport and placing device AR1, transport and placing device AR2 output signals, and devises the same of triode Q2 feedback signals input transport and placing device AR1
In phase input terminal, differential feedback circuit output signal is adjusted, and has used the triode of triode Q3 and voltage-stabiliser tube D7 compositions steady
Volt circuit voltage stabilizing, last warning circuit receives the signal of differential feedback circuit input, when abnormal signal, warning circuit work report
It is alert；
The differential feedback circuit with transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 form difference channel into
Row difference processing stabilizes the quiescent operation value of signal, by adjust slide rheostat RW1 resistance value also can Regulate signal it is quiet
State working value, while devising comparator AR3 and comparing transport and placing device AR1, transport and placing device AR2 output signals, and devise triode Q2
Feedback signal inputs in the in-phase input end of transport and placing device AR1, when comparator AR3 output signal current potentials are relatively low, is not enough to driving report
When alert circuit work, triode Q2 is PNP triode, and triode Q2 is connected at this time, and power supply+5V plays defeated after resistance R7 partial pressures
In the in-phase input end for entering transport and placing device AR1, the effect of thermal compensation signal is played, while also having the effect of amplified signal, reaches tune
The purpose of differential feedback circuit output signal is saved, and has used the triode regulator circuit of triode Q3 and voltage-stabiliser tube D7 compositions steady
Pressure improves the stability of signal, the current collection of the cathode and triode Q2 of the homophase input termination diode D1 of transport and placing device AR1
Pole, the contact 1 of the anti-phase input termination slide resistor RW1 of transport and placing device AR1, one end of contact 2 and resistance R5, transport and placing device AR1
Output termination comparator AR3 in-phase input end and resistance R5 the other end, the 3 connecting resistance R4 of contact of slide rheostat RW1
One end and transport and placing device AR2 inverting input, the cathode of the homophase input termination diode D3 of transport and placing device AR2, transport and placing device AR2
Output terminating resistor R4 the other end and comparator AR3 inverting input, the output termination triode Q2's of comparator AR3
One end of base stage and resistance R6, one end of the collector and resistance R8 of another termination triode Q3 of resistance R6, triode Q2's
One end of emitter connecting resistance R7, the other end of the base stage connecting resistance R8 of another termination power+5V of resistance R7, triode Q3 and
The cathode of voltage-stabiliser tube D7, the plus earth of voltage-stabiliser tube D7, one end of the emitter connecting resistance R9 of triode Q3.
Embodiment two, on the basis of embodiment one, the signal frequency Acquisition Circuit uses the letter of model SJ-ADC
Control terminal receives in the signal transmission passage of signal in number frequency collection device J1 acquisition Distributed Real Time Data Acquisition systems
Signal frequency, while with input difference feedback electricity after the π type filter circuits filtering of inductance L1 and capacitance C2, capacitance C3 composition
In road, the anti-interference of signal is improved, one end of the power supply terminating resistor R1 of signal frequency collector J1, resistance R1's is another
One end of termination power+5V and capacitance C1, one end of the output terminating resistor R2 of signal frequency collector J1, signal frequency acquisition
The ground terminal of device J1 is grounded, the other end of another termination capacitor C1 of resistance R2, one end and inductance L1 of capacitance C2 one end, electricity
Feel one end of one end and capacitance C2 of another terminating resistor R3 of L1, the other end ground connection of capacitance C2, another termination of capacitance C3
Ground, another terminating diode D1 of resistance R3, the anode of diode D3.
Embodiment three, on the basis of embodiment two, the warning circuit receives the signal of differential feedback circuit input, when
When control terminal receives the abnormal signal in the signal transmission passage of signal in Distributed Real Time Data Acquisition system, metal-oxide-semiconductor
Q1 is connected, the contact 1 of relay K1,3 contact closures, and the alarm of alarm LS1 work once electrifieds reminds related personnel's maintenance, works as letter
When number normal, the contact 1,2 of relay K1 is closed, and alarm LS1 does not work, the other end of the grid connecting resistance R9 of metal-oxide-semiconductor Q1,
The anode of the contact 5 and diode D2 of the drain electrode contact relay K1 of metal-oxide-semiconductor Q1, the contact 4 of relay K1 and bearing for diode D2
Pole connects power supply+10V, one end of the 1 connecting resistance R10 of contact of relay K1, another termination power+20V of resistance R10, relay
The contact 2 of K1 is grounded, the anode of the 3 device LS1 taking alarm of contact of relay K1, and the one of the cathode connecting resistance R11 of alarm LS1
End, the other end of resistance R11 and the source electrode ground connection of metal-oxide-semiconductor Q1.
The utility model is when specifically used, Distributed Real Time Data Acquisition system, including signal frequency Acquisition Circuit, difference
Divide feedback circuit and warning circuit, the signal frequency Acquisition Circuit, differential feedback circuit and warning circuit, the signal frequency
Acquisition Circuit acquires the signal in the signal transmission passage of control terminal reception signal in Distributed Real Time Data Acquisition system
Frequency, it is described after being filtered with the π type filter circuits of inductance L1 and capacitance C2, capacitance C3 compositions in input difference feedback circuit
Differential feedback circuit carries out difference processing with transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 composition difference channels, surely
The quiescent operation value for having determined signal, by adjust slide rheostat RW1 resistance value also can Regulate signal quiescent operation value, simultaneously
It devises comparator AR3 and compares transport and placing device AR1, transport and placing device AR2 output signals, and devise triode Q2 feedback signals input fortune
In the in-phase input end for putting device AR1, when comparator AR3 output signal current potentials are relatively low, are not enough to driving warning circuit work, three
Pole pipe Q2 is PNP triode, and triode Q2 is connected at this time, and power supply+5V is played inputs the same of transport and placing device AR1 after resistance R7 partial pressures
In phase input terminal, the effect of thermal compensation signal is played, while also having the effect of amplified signal, it is defeated to reach adjusting differential feedback circuit
Go out the purpose of signal, and used the triode regulator circuit voltage stabilizing of triode Q3 and voltage-stabiliser tube D7 compositions, improves signal
Stability, last warning circuit receive the signal of differential feedback circuit input, are controlled when in Distributed Real Time Data Acquisition system
When abnormal signal in the signal transmission passage of terminal received signals, metal-oxide-semiconductor Q1 conductings, the contact 1,3 of relay K1 contacts
It is closed, related personnel's maintenance is reminded in the alarm of alarm LS1 work once electrifieds.
The above is to combine specific implementation mode further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；For belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made by expand and operating method, data replacement, should all fall
Within scope of protection of the utility model.
Claims (3)
1. Distributed Real Time Data Acquisition system, including signal frequency Acquisition Circuit, differential feedback circuit and warning circuit, special
Sign is that the signal frequency Acquisition Circuit, differential feedback circuit and warning circuit, the signal frequency Acquisition Circuit acquisition divide
Control terminal receives the signal frequency in the signal transmission passage of signal in cloth real-time data acquisition system, with inductance L1
After being filtered with the π type filter circuits of capacitance C2, capacitance C3 compositions in input difference feedback circuit, the differential feedback circuit uses
Transport and placing device AR1, transport and placing device AR2 and slide rheostat RW1 composition difference channels carry out difference processing, while devising comparator
AR3 compares transport and placing device AR1, transport and placing device AR2 output signals, and devises the same of triode Q2 feedback signals input transport and placing device AR1
In phase input terminal, differential feedback circuit output signal is adjusted, and has used the triode of triode Q3 and voltage-stabiliser tube D7 compositions steady
Volt circuit voltage stabilizing, last warning circuit receives the signal of differential feedback circuit input, when abnormal signal, warning circuit work report
It is alert；
The differential feedback circuit includes transport and placing device AR1, the cathode of the homophase input termination diode D1 of transport and placing device AR1 and three poles
The collector of pipe Q2, the contact 1 of the anti-phase input termination slide resistor RW1 of transport and placing device AR1, one end of contact 2 and resistance R5,
The other end of the in-phase input end and resistance R5 of the output termination comparator AR3 of transport and placing device AR1, the contact 3 of slide rheostat RW1
The inverting input of one end and transport and placing device AR2 of connecting resistance R4, the cathode of the homophase input termination diode D3 of transport and placing device AR2,
The inverting input of the other end and comparator AR3 of the output terminating resistor R4 of transport and placing device AR2, the output termination of comparator AR3
One end of the base stage and resistance R6 of triode Q2, one end of the collector and resistance R8 of another termination triode Q3 of resistance R6,
One end of the emitter connecting resistance R7 of triode Q2, the base stage connecting resistance R8 of another termination power+5V of resistance R7, triode Q3
The other end and voltage-stabiliser tube D7 cathode, the plus earth of voltage-stabiliser tube D7, one end of the emitter connecting resistance R9 of triode Q3.
2. Distributed Real Time Data Acquisition system as described in claim 1, which is characterized in that the signal frequency Acquisition Circuit
One end of the power supply terminating resistor R1 of signal frequency collector J1 including model SJ-ADC, signal frequency collector J1, electricity
Hinder one end of another termination power+5V and capacitance C1 of R1, one end of the output terminating resistor R2 of signal frequency collector J1, letter
The ground terminal ground connection of number frequency collection device J1, the other end of another termination capacitor C1, one end of capacitance C2 and the inductance of resistance R2
One end of L1, one end of one end and capacitance C2 of another terminating resistor R3 of inductance L1, the other end ground connection of capacitance C2, capacitance C3
The other end ground connection, another terminating diode D1 of resistance R3, the anode of diode D3.
3. Distributed Real Time Data Acquisition system as described in claim 1, which is characterized in that the warning circuit includes MOS
The other end of the grid connecting resistance R9 of pipe Q1, metal-oxide-semiconductor Q1, the contact 5 of the drain electrode contact relay K1 of metal-oxide-semiconductor Q1 and diode D2's
Anode, the contact 4 of relay K1 and the cathode of diode D2 meet power supply+10V, and the one of the 1 connecting resistance R10 of contact of relay K1
The contact 2 at end, another termination power+20V of resistance R10, relay K1 is grounded, the 3 device LS1's taking alarm of contact of relay K1
Anode, one end of the cathode connecting resistance R11 of alarm LS1, the other end of resistance R11 and the source electrode ground connection of metal-oxide-semiconductor Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820646211.6U CN208044392U (en) | 2018-05-03 | 2018-05-03 | Distributed Real Time Data Acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820646211.6U CN208044392U (en) | 2018-05-03 | 2018-05-03 | Distributed Real Time Data Acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208044392U true CN208044392U (en) | 2018-11-02 |
Family
ID=63928747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820646211.6U Expired - Fee Related CN208044392U (en) | 2018-05-03 | 2018-05-03 | Distributed Real Time Data Acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208044392U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379309A (en) * | 2018-12-07 | 2019-02-22 | 河南华兴通信技术有限公司 | Integrated digital microwave predistortion circuit |
| CN109375695A (en) * | 2018-11-29 | 2019-02-22 | 国家电网有限公司 | A kind of information-based remote monitoring system based on big data |
| CN109589134A (en) * | 2019-01-29 | 2019-04-09 | 河南省中医院（河南中医药大学第二附属医院） | Ultrasonic radiography auxiliary monitoring device |
| CN109687880A (en) * | 2018-12-17 | 2019-04-26 | 广东农工商职业技术学院(农业部华南农垦干部培训中心) | Multimedia messages monitoring system signal calibration circuit |
| CN109889795A (en) * | 2019-04-17 | 2019-06-14 | 冯芊雅 | A kind of domestic video monitoring system |
| CN109899342A (en) * | 2019-03-28 | 2019-06-18 | 中国石油大学(华东) | A kind of hydraulic safe early warning system |
| CN110138409A (en) * | 2019-05-30 | 2019-08-16 | 郑州金居建筑科技有限公司 | Intelligent tower crane runs deflection calibration system |
| CN110244814A (en) * | 2019-05-14 | 2019-09-17 | 郑州工业应用技术学院 | A kind of electromechanics low-voltage equipment power compensating circuit |
-
2018
- 2018-05-03 CN CN201820646211.6U patent/CN208044392U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375695A (en) * | 2018-11-29 | 2019-02-22 | 国家电网有限公司 | A kind of information-based remote monitoring system based on big data |
| CN109379309B (en) * | 2018-12-07 | 2023-07-07 | 华兴通信技术有限公司 | Integrated digital microwave predistortion circuit |
| CN109379309A (en) * | 2018-12-07 | 2019-02-22 | 河南华兴通信技术有限公司 | Integrated digital microwave predistortion circuit |
| CN109687880B (en) * | 2018-12-17 | 2021-10-22 | 刘莎莎 | Signal calibration circuit for multimedia information monitoring system |
| CN109687880A (en) * | 2018-12-17 | 2019-04-26 | 广东农工商职业技术学院(农业部华南农垦干部培训中心) | Multimedia messages monitoring system signal calibration circuit |
| CN109589134A (en) * | 2019-01-29 | 2019-04-09 | 河南省中医院（河南中医药大学第二附属医院） | Ultrasonic radiography auxiliary monitoring device |
| CN109589134B (en) * | 2019-01-29 | 2021-07-13 | 河南省中医院（河南中医药大学第二附属医院） | Ultrasonic radiography auxiliary monitoring device |
| CN109899342A (en) * | 2019-03-28 | 2019-06-18 | 中国石油大学(华东) | A kind of hydraulic safe early warning system |
| CN109899342B (en) * | 2019-03-28 | 2024-04-12 | 中国石油大学(华东) | Hydraulic safety early warning system |
| CN109889795A (en) * | 2019-04-17 | 2019-06-14 | 冯芊雅 | A kind of domestic video monitoring system |
| CN109889795B (en) * | 2019-04-17 | 2020-09-18 | 冯芊雅 | Household video monitoring system |
| CN110244814B (en) * | 2019-05-14 | 2020-10-02 | 海南豪杰电子有限公司 | Electromechanical low-voltage equipment power compensation circuit |
| CN110244814A (en) * | 2019-05-14 | 2019-09-17 | 郑州工业应用技术学院 | A kind of electromechanics low-voltage equipment power compensating circuit |
| CN110138409A (en) * | 2019-05-30 | 2019-08-16 | 郑州金居建筑科技有限公司 | Intelligent tower crane runs deflection calibration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208044392U (en) | Distributed Real Time Data Acquisition system | |
| CN109347976B (en) | Robot remote real-time monitoring system based on cloud computing | |
| CN108494418A (en) | A kind of big data signal calibration circuit | |
| CN209992574U (en) | Electric automobile insulation resistance detection circuitry | |
| CN208444170U (en) | Rotary drill wireless remote monitering intelligent Fault Diagnose Systems | |
| CN110348796A (en) | Logistics information collection system | |
| CN109613202A (en) | Corrosive pipeline degree measuring instrument signal calibration device | |
| CN107681638A (en) | Power supply protection equipment for ship electronic chart system | |
| CN207706184U (en) | A kind of anti-disorderly telecommunication distributing box | |
| CN109088608A (en) | A kind of electronic equipment information processing system | |
| CN207263892U (en) | A kind of overload early-warning device of Rubber Conveyor Belt Scrap | |
| CN208077155U (en) | Computer fault alarm system | |
| CN207353817U (en) | A kind of home electronics Overloading protection apparatus | |
| CN209570865U (en) | A kind of supply voltage driving adjusting circuit | |
| CN208401808U (en) | A kind of low-frequency electronic communication system | |
| CN109104180A (en) | electronic information data processing system | |
| CN109687880A (en) | Multimedia messages monitoring system signal calibration circuit | |
| CN208654222U (en) | A kind of grid-connected photovoltaic system | |
| CN207851804U (en) | A kind of computer interactive education system | |
| CN208767773U (en) | Cable production drawing machine overvoltage crowbar | |
| CN208027549U (en) | A kind of electronic information switching system | |
| CN208061056U (en) | A kind of electronic signal monitoring system | |
| CN209676199U (en) | Electronic information enhances circuit | |
| CN207690733U (en) | A kind of quick, intelligent pole-mounted circuit breakers of 10KV | |
| CN209659279U (en) | Electrical communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20190503 |