CN207926157U - Wisdom formula electrical safety hidden danger monitoring and predicting and service system - Google Patents
Wisdom formula electrical safety hidden danger monitoring and predicting and service system Download PDFInfo
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- CN207926157U CN207926157U CN201820464627.6U CN201820464627U CN207926157U CN 207926157 U CN207926157 U CN 207926157U CN 201820464627 U CN201820464627 U CN 201820464627U CN 207926157 U CN207926157 U CN 207926157U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The utility model discloses wisdom formula electrical safety hidden danger monitoring and predicting and service systems,Including signal processing circuit and display circuit,Subtraction circuit and warning circuit,The signal processing circuit will divide two-way to export after the collected ac current signal rectifying and wave-filtering of signal receiving end after operational amplifier A R1 carries out conversion amplification,Display circuit is inputted all the way,Through operational amplifier A R2 input and display devices E1,Another way input subtraction circuit,Warning circuit is inputted after carrying out subtraction with the reference voltage signal generated on resistance R8,When the warning circuit receives the forward voltage signal of subtraction circuit output,Triode Q1 conductings,Relay K1 obtains electric,Normally opened contact is closed,Warning message is sent to user service platform by sender unit E2,Thyristor Q2 conductings,Buzzer LS1 alarms,With real-time monitoring,The characteristic of instant alarming,Effectively the electric current in power distribution cabinet is monitored,And when there are abnormal conditions,Immediately it issues warning signal.
Description
Technical field
The utility model is related to current monitoring technique fields, are taken more particularly to wisdom formula electrical safety hidden danger monitoring and warning
Business system.
Background technology
Final stage device of the power distribution cabinet as distribution system, from conversational implication, power distribution cabinet is exactly to be integrated with for electric energy
The cabinet of the electrical equipment of distribution, the effect of power distribution cabinet are to carry out distribution and control to electrical equipment, overload, short occur in circuit
When road and electric leakage, power distribution cabinet can also provide power-off protection, thus power distribution cabinet is ensureing user security, reliable and convenient electricity consumption side
Face plays considerable effect, but power distribution cabinet also electrical equipment, it is also possible to it is existing to will appear overload, short circuit and electric leakage
As this can have an impact the performance of power distribution cabinet, while reduce the safety of user power utilization, reduce power quality.
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, the utility model to be designed to provide wisdom formula electrical
Security risk monitoring and predicting and service system, have in real time monitoring, instant alarming characteristic, effectively to the electric current in power distribution cabinet into
It has gone monitoring, and when there are abnormal conditions, has issued warning signal immediately.
Its technical solution solved is wisdom formula electrical safety hidden danger monitoring and predicting and service system, including signal processing electricity
Road and display circuit, subtraction circuit and warning circuit, the signal processing circuit is by the collected alternating current of signal receiving end
Divide two-way to export after operational amplifier A R1 carries out conversion amplification after stream signal rectification filtering, display circuit is inputted all the way, through fortune
The reference voltage signal generated on calculation amplifier AR2 input and display device E1, another way input subtraction circuit and resistance R8 carries out
Warning circuit is inputted after subtraction, when the warning circuit receives the forward voltage signal of subtraction circuit output, triode
Q1 is connected, and relay K1 obtains electric, and normally opened contact is closed, and warning message is sent to user service platform by sender unit E2, brilliant
Brake tube Q2 conductings, buzzer LS1 alarms；
The warning circuit includes power supply+12V, power supply+12V connect triode Q1 emitter and reset switch S1 one
End, one end of the base stage connecting resistance R12 of triode Q1, the pin 1 of the collector connecting relay K1 of triode Q1, pin 3 and steady
The cathode of diode D3 and the gate pole of thyristor Q2, the pin 4 of relay K1 is pressed to be grounded, the pin 2 of relay K1 connects signal
The anode of transmitter E2, zener diode D3 and the pin 4 of relay K1, the one of another terminating resistor R11 of reset switch S1
End, the anode of another termination thyristor Q2 of resistance R11, the cathode of thyristor Q2 meet the pin 1 of buzzer LS1, buzzer LS1
Pin 2 be grounded.
Due to the use of above technical scheme, the utility model has the following advantages that compared with prior art；
1, warning circuit described in the warning circuit is in the forward voltage signal for receiving subtraction circuit output through resistance R12
When, the signal received is divided two-way to export, is grounded all the way through relay K1 by triode Q1 conductings, the collector of triode Q1,
At this point, relay K1 obtain it is electric, normally opened contact be closed, warning information is sent to user service platform by sender unit E2, another
Road inputs the gate pole of thyristor Q2, and the gate pole for thyristor Q2 provides trigger signal, at this point, reset switch S1 is in closed form
State, thyristor Q2 conductings, buzzer LS1 send out alarm signal, and until maintenance personal disconnects reset switch S1, thyristor Q2 is cut
Only, relay K1 is stopped, and normally opened contact disconnects, and sender unit E2 is stopped, buzzer LS1 stop alarms, if this
Alarm circuit still receives the forward voltage signal of subtraction circuit output, and thyristor Q2 will be connected again, and relay K1 is again
Electricly secondary, normally opened contact is closed, and sender unit E2 continues transmission warning information and continues to report to user service platform buzzer LS1
Alert, until maintenance personal has repaired power distribution cabinet, triode Q2 cut-offs, relay K1 is stopped, and sender unit E2 stops hair
Warning message is sent, when reset switch S1 is again off by maintenance personal, thyristor Q2 cut-offs, buzzer K1 stop alarms, tool
There is the characteristics of monitoring, instant alarming in real time, effectively abnormal current in power distribution cabinet is monitored, and the exception to monitoring
Current signal carries out instant alarming, and stop alarm when maintenance personal has repaired power distribution cabinet had both improved the peace of user power utilization
Full property and power quality, and protect power distribution cabinet.
2, the adder that the subtraction circuit is formed using operational amplifier A R3 and resistance R10, resistance R9 is as subtraction
Device carries out subtraction fortune by the inversion signal of signal processing circuit output and as the voltage signal on the resistance R8 of reference signal
It calculates, and the signal generated after subtraction is output to warning circuit after the amplification of operational amplifier A R3 reverse phases through diode D2,
When the absolute value of the voltage signal of signal processing circuit output is more than the voltage signal on resistance R7, subtraction circuit output is positive
Voltage signal, diode D2 conductings, inputs a signal into warning circuit, when the absolute value of the voltage signal of signal processing circuit output
When less than voltage signal on resistance R7, subtraction circuit exports reverse voltage signal, and diode D2 cut-offs, subtraction circuit is without output
Signal has the characteristics that simple in structure, effect is good, effectively by signal and the benchmark pre-warning signal of signal processing circuit output into
It has gone and has compared, while having controlled the work of warning circuit, played the effect of instant alarming.
Description of the drawings
Fig. 1 is the circuit module figure of the utility model wisdom formula electrical safety hidden danger monitoring and predicting and service system.
Fig. 2 is the circuit diagram of the utility model wisdom formula electrical safety hidden danger monitoring and predicting and service system.
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.
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
Wisdom formula electrical safety hidden danger monitoring and predicting and service system includes signal processing circuit and display circuit, subtraction circuit
And warning circuit, the signal processing circuit by after the collected ac current signal rectifying and wave-filtering of signal receiving end through operation
Amplifier AR1 divides two-way to export after carrying out conversion amplification, inputs display circuit all the way, through operational amplifier A R2 input display dresses
Set E1, the reference voltage signal generated on another way input subtraction circuit and resistance R8 carries out input alarm electricity after subtraction
Road, when the warning circuit receives the forward voltage signal of subtraction circuit output, triode Q1 conducting, relay K1 obtain it is electric,
Normally opened contact is closed, and warning message is sent to user service platform, thyristor Q2 conductings, buzzer LS1 by sender unit E2
Alarm；
The warning circuit includes power supply+12V, power supply+12V connect triode Q1 emitter and reset switch S1 one
End, one end of the base stage connecting resistance R12 of triode Q1, the pin 1 of the collector connecting relay K1 of triode Q1, pin 3 and steady
The cathode of diode D3 and the gate pole of thyristor Q2, the pin 4 of relay K1 is pressed to be grounded, the pin 2 of relay K1 connects signal
The anode of transmitter E2, zener diode D3 and the pin 4 of relay K1, the one of another terminating resistor R11 of reset switch S1
End, the anode of another termination thyristor Q2 of resistance R11, the cathode of thyristor Q2 meet the pin 1 of buzzer LS1, buzzer LS1
Pin 2 be grounded；
In order to achieve the purpose that instant alarming, the warning circuit are receiving subtraction circuit output just through resistance R12
When to voltage signal, triode Q1 conductings, the signal received is divided two-way to export by the collector of triode Q1, all the way through relay
Device K1 ground connection, at this point, relay K1 obtains electric, normally opened contact is closed, and warning information is sent to user service by sender unit E2
Platform, zener diode D3 play pressure stabilization function, protective relay K1, and another way inputs the gate pole of thyristor Q2, are thyristor Q2
Gate pole trigger signal is provided, at this point, reset switch S1 be in closed state, thyristor Q2 is connected, and buzzer LS1 sends out alarm
Signal, until maintenance personal disconnects reset switch S1, thyristor Q2 cut-offs, relay K1 is stopped, and normally opened contact disconnects,
Sender unit E2 is stopped, buzzer LS1 stop alarms, if warning circuit still receives subtraction circuit output at this time
Forward voltage signal, thyristor Q2 will be connected again, relay K1 again it is electric, normally opened contact be closed, sender unit E2 after
Supervention send warning information to continue to alarm to user service platform buzzer LS1, until maintenance personal has repaired power distribution cabinet, triode
Q2 ends, and relay K1 is stopped, and sender unit E2 stops sending warning message, when maintenance personal by reset switch S1 again
When secondary disconnection, thyristor Q2 cut-offs, buzzer K1 stop alarms have the characteristics that monitoring, instant alarming in real time, effectively to matching
Abnormal current is monitored in electric cabinet, and the abnormal current signal to monitoring carries out instant alarming, until maintenance personal ties up
Stop alarm when fixing power distribution cabinet, had not only improved safety and the power quality of user power utilization, but also protected power distribution cabinet.
The signal processing circuit includes rectifier bridge D1, and the pin 1 of rectifier bridge D1 is grounded, and the pin 2 of rectifier bridge D1 connects letter
Number input terminal, one end of one end and capacitance C1 of the 3 connecting resistance R1 of pin of rectifier bridge D1, it is defeated that the pin 4 of rectifier bridge D1 connects signal
Enter end, the other end ground connection of capacitance C1, one end of one end and resistance R2 of another termination capacitor C2 of resistance R1, capacitance C2's is another
One end is grounded, and one end of the inverting input and resistance R3 of another termination operational amplifier A R1 of resistance R2, resistance R3's is another
One end of terminating resistor R4, resistance R5, the other end ground connection of resistance R5, the homophase input terminating resistor R6 of operational amplifier A R1
One end, the other end ground connection of resistance R6, the other end of the output terminating resistor R4 of operational amplifier A R1；
In order to improve the interference free performance of the current signal monitored, the signal processing circuit will be believed using rectifier bridge D1
The ac current signal rectification of number input terminal input is the low of DC current signal input resistance R1, capacitance C1 and capacitance C2 compositions
Inverting input through resistance R2 input operational amplifiers AR1 after bandpass filter circuit filters DC current signal, is put by operation
The Current Voltage converter amplifier circuit that big device AR1 and resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6 are formed will be whole
It flows filtered current signal and is converted to voltage signal, and divide two-way to export after carrying out reverse phase amplification, input display circuit all the way,
Another way input subtraction circuit, wherein the π type filter circuits of resistance R1, capacitance C1 and capacitance C2 compositions are filtered, and are filtered out miscellaneous
Wave, improves the interference free performance of monitoring signals, and resistance R3, resistance R4 and resistance R5 composition T-type circuits are converted as Current Voltage
The feedback resistance of amplifying circuit improves the stability of Current Voltage converter amplifier circuit, has spy simple in structure, stability is good
Point realizes detection in real time, the effect adjusted in real time, effectively raises the interference free performance of circuit.
The display circuit includes operational amplifier A R2, and the anti-phase input of operational amplifier A R2 terminates operational amplifier
The output end of AR2, the output end of the homophase input termination operational amplifier A R1 of operational amplifier A R2, operational amplifier A R2's
Output termination current display device E1；
Check that the real-time current monitored, the display circuit utilize operational amplifier in order to facilitate user and maintenance personal
AR2 shows the signal input and display device E1 that signal processing circuit exports, wherein operational amplifier A R2 is as voltage
Follower, there are two effects, first, as buffer stage, improve rear class impedance, second is that playing buffer action, have simple in structure, anti-
The characteristics of interference, the accuracy of signal is effectively raised, and facilitates user and maintenance personal checks.
The subtraction circuit includes power supply+12V, and power supply+12V connects one end of adjustable resistance R7, and adjustable resistance R7's is another
Terminating resistor R8, the inverting input of one end of feedback resistance R10 and operational amplifier A R3 and operational amplifier A R1 it is defeated
Outlet, the other end ground connection of resistance R8, one end of the homophase input terminating resistor R9 of operational amplifier A R3, resistance R9's is another
End ground connection, the output end of operational amplifier A R3 connect the anode of the other end and diode D2 of feedback resistance R10, diode D2's
The other end of cathode connecting resistance R12；
In order to detect whether monitoring signals exceed early warning value, the subtraction circuit utilizes operational amplifier A R3 and resistance
The adder that R10, resistance R9 are formed is as subtracter, by the inversion signal of signal processing circuit output and as reference signal
Voltage signal on resistance R8 carries out subtraction, and the signal generated after subtraction is put through operational amplifier A R3 reverse phases
Warning circuit is output to through diode D2, wherein pre-warning signal is arranged as reference signal setter in adjustable resistance R7, leads to after big
The resistance value changed on adjustable resistance R7 is crossed, changes current signal early warning value, resistance R7 is as sampling resistor, the electricity on resistance R7
Signal is pressed to input subtracter as benchmark pre-warning signal value, when the absolute value of the voltage signal of signal processing circuit output is more than electricity
When hindering the voltage signal on R7, subtraction circuit exports forward voltage signal, and diode D2 conductings input a signal into warning circuit,
When the absolute value of the voltage signal of signal processing circuit output is less than the voltage signal on resistance R7, subtraction circuit output is reversed
Voltage signal, diode D2 cut-offs, subtraction circuit non-output signal have the characteristics that simple in structure, effect is good, effectively will letter
The signal of number processing circuit output is compared with benchmark pre-warning signal, while controlling the work of warning circuit, is played
The effect of instant alarming.
When the utility model is specifically used, the signal processing circuit inputs a signal into the friendship of end input using rectifier bridge D1
Galvanic electricity stream signal rectification is the low-pass filter circuit of DC current signal input resistance R1, capacitance C1 and capacitance C2 composition by direct current
Current signal filtering after the inverting input through resistance R2 input operational amplifiers AR1, by operational amplifier A R1 and resistance R2,
The Current Voltage converter amplifier circuit that resistance R3, resistance R4, resistance R5 and resistance R6 are formed believes the electric current after rectifying and wave-filtering
Number voltage signal is converted to, and divides two-way to export after being amplified, inputs display circuit all the way, another way input subtraction circuit,
Have the characteristics that simple in structure, stability is good, realizes detection in real time, the effect adjusted in real time, effectively raise circuit
Interference free performance, the signal input display that signal processing circuit export by the display circuit using operational amplifier A R2 fills
It sets E1 to be shown, wherein operational amplifier A R2 is as voltage follower, and there are two effects, first, as buffer stage, improves
Rear class impedance has the characteristics that simple in structure, jamproof second is that playing buffer action, effectively raises the accuracy of signal, and
It facilitates user and maintenance personal checks, the subtraction circuit is formed using operational amplifier A R3 and resistance R10, resistance R9
Adder is believed as subtracter by the inversion signal of signal processing circuit output and as the voltage on the resistance R8 of reference signal
Number carry out subtraction, and by the signal generated after subtraction through operational amplifier A R3 reverse phases amplification after it is defeated through diode D2
Go out to warning circuit, wherein pre-warning signal is arranged as reference signal setter in adjustable resistance R7, by changing adjustable resistance R7
On resistance value, change current signal early warning value, for resistance R7 as sampling resistor, the voltage signal on resistance R7 is pre- as benchmark
Alert signal value inputs subtracter, when the absolute value of the voltage signal of signal processing circuit output is more than the voltage signal on resistance R7
When, subtraction circuit exports forward voltage signal, and diode D2 conductings input a signal into warning circuit, when signal processing circuit is defeated
When the absolute value of the voltage signal gone out is less than the voltage signal on resistance R7, subtraction circuit exports reverse voltage signal, diode
D2 ends, and subtraction circuit non-output signal has the characteristics that simple in structure, effect is good, effectively exports signal processing circuit
Signal compared with benchmark pre-warning signal, while controlling the work of warning circuit, play the effect of instant alarming,
The warning circuit is when receiving the forward voltage signal of subtraction circuit output through resistance R12, triode Q1 conductings, triode
The signal received is divided two-way to export by the collector of Q1, all the way through relay K1 be grounded, at this point, relay K1 obtain it is electric, it is normally opened
Warning information is sent to user service platform by contact closure, sender unit E2, and zener diode D3 plays pressure stabilization function, protection
Relay K1, another way input the gate pole of thyristor Q2, and the gate pole for thyristor Q2 provides trigger signal, at this point, reset switch
S1 is in closed state, and thyristor Q2 conductings, buzzer LS1 sends out alarm signal, until maintenance personal breaks reset switch S1
It opens, thyristor Q2 cut-offs, relay K1 is stopped, and normally opened contact disconnects, and sender unit E2 is stopped, buzzer LS1
Stop alarm, if warning circuit still receives the forward voltage signal of subtraction circuit output at this time, thyristor Q2 will be led again
It is logical, relay K1 again it is electric, normally opened contact is closed, and sender unit E2 continues transmission warning information to user service platform bee
Ring device LS1 continues to alarm, and until maintenance personal has repaired power distribution cabinet, triode Q2 cut-offs, relay K1 is stopped, signal hair
Device E2 is sent to stop sending warning message, when reset switch S1 is again off by maintenance personal, thyristor Q2 cut-offs, buzzer K1
Stop alarm has the characteristics that monitoring, instant alarming in real time, is effectively monitored to abnormal current in power distribution cabinet, and right
The abnormal current signal monitored carries out instant alarming, and stop alarm when maintenance personal has repaired power distribution cabinet both improved
The safety of user power utilization and power quality, and protect power distribution cabinet.
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 (4)
1. wisdom formula electrical safety hidden danger monitoring and predicting and service system, including signal processing circuit and display circuit, subtraction circuit
And warning circuit, which is characterized in that the signal processing circuit is by the collected ac current signal rectification of signal receiving end
Divide two-way to export after operational amplifier A R1 carries out conversion amplification after filtering, display circuit is inputted all the way, through operational amplifier
The reference voltage signal generated on AR2 input and display device E1, another way input subtraction circuit and resistance R8 carries out subtraction
After input warning circuit, when the warning circuit receives the forward voltage signal of subtraction circuit output, triode Q1 conductings, after
Electric appliance K1 obtains electric, and normally opened contact is closed, and warning message is sent to user service platform by sender unit E2, and thyristor Q2 is led
It is logical, buzzer LS1 alarms；
The warning circuit includes power supply+12V, and power supply+12V connects one end of the emitter and reset switch S1 of triode Q1, and three
One end of the base stage connecting resistance R12 of pole pipe Q1, two pole of pin 1, pin 3 and voltage stabilizing of the collector connecting relay K1 of triode Q1
The pin 4 of the cathode of pipe D3 and the gate pole of thyristor Q2, relay K1 is grounded, and the pin 2 of relay K1 connects sender unit
The anode of E2, zener diode D3 and the pin 4 of relay K1, one end of another terminating resistor R11 of reset switch S1, resistance
The cathode of the anode of another termination thyristor Q2 of R11, thyristor Q2 connects the pin 1 of buzzer LS1, the pin 2 of buzzer LS1
Ground connection.
2. wisdom formula electrical safety hidden danger monitoring and predicting and service system as described in claim 1, which is characterized in that at the signal
Reason circuit includes rectifier bridge D1, and the pin 1 of rectifier bridge D1 is grounded, and the pin 2 of rectifier bridge D1 connects signal input part, rectifier bridge D1's
The pin 4 of one end of one end and capacitance C1 of 3 connecting resistance R1 of pin, rectifier bridge D1 connects signal input part, the other end of capacitance C1
Ground connection, one end of one end and resistance R2 of another termination capacitor C2 of resistance R1, the other end ground connection of capacitance C2, resistance R2's is another
One end of the inverting input and resistance R3 of one termination operational amplifier A R1, another terminating resistor R4 of resistance R3, resistance R5
One end, the other end ground connection of resistance R5, one end of the homophase input terminating resistor R6 of operational amplifier A R1, resistance R6's is another
End ground connection, the other end of the output terminating resistor R4 of operational amplifier A R1.
3. wisdom formula electrical safety hidden danger monitoring and predicting and service system as described in claim 1, which is characterized in that the display electricity
Road includes operational amplifier A R2, the output end of the anti-phase input termination operational amplifier A R2 of operational amplifier A R2, operation amplifier
The output end of the homophase input termination operational amplifier A R1 of device AR2, the output termination display device E1 of operational amplifier A R2.
4. wisdom formula electrical safety hidden danger monitoring and predicting and service system as described in claim 1, which is characterized in that the subtraction electricity
Road includes power supply+12V, and power supply+12V connects one end of adjustable resistance R7, another terminating resistor R8, the feedback resistance of adjustable resistance R7
The output end of one end of R10 and the inverting input of operational amplifier A R3 and operational amplifier A R1, the other end of resistance R8
Ground connection, one end of the homophase input terminating resistor R9 of operational amplifier A R3, the other end ground connection of resistance R9, operational amplifier A R3
Output end connect feedback resistance R10 the other end and diode D2 anode, the cathode connecting resistance R12's of diode D2 is another
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820464627.6U CN207926157U (en) | 2018-03-30 | 2018-03-30 | Wisdom formula electrical safety hidden danger monitoring and predicting and service system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820464627.6U CN207926157U (en) | 2018-03-30 | 2018-03-30 | Wisdom formula electrical safety hidden danger monitoring and predicting and service system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926157U true CN207926157U (en) | 2018-09-28 |
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ID=63596973
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820464627.6U Expired - Fee Related CN207926157U (en) | 2018-03-30 | 2018-03-30 | Wisdom formula electrical safety hidden danger monitoring and predicting and service system |
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| Country | Link |
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| CN (1) | CN207926157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220870A (en) * | 2020-02-28 | 2020-06-02 | 成都领派科技有限公司 | Gas fire extinguishing equipment monitoring circuit |
-
2018
- 2018-03-30 CN CN201820464627.6U patent/CN207926157U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220870A (en) * | 2020-02-28 | 2020-06-02 | 成都领派科技有限公司 | Gas fire extinguishing equipment monitoring circuit |
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Address after: 467000 Huatuo Electric Power Industrial Park, north of the east section of Shenma Avenue, high tech Zone, Pingdingshan City, Henan Province Patentee after: Huatuo Power Equipment Group Co.,Ltd. Address before: 467000 courtyard 5, Fengyuan street, high tech Zone, Pingdingshan City, Henan Province Patentee before: HENAN HUATUO ELECTRIC POWER EQUIPMENT Co.,Ltd. |
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Granted publication date: 20180928 |
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