CN207074236U - A kind of power failure alarm - Google Patents
A kind of power failure alarm Download PDFInfo
- Publication number
- CN207074236U CN207074236U CN201720682784.XU CN201720682784U CN207074236U CN 207074236 U CN207074236 U CN 207074236U CN 201720682784 U CN201720682784 U CN 201720682784U CN 207074236 U CN207074236 U CN 207074236U
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Abstract
The utility model discloses a kind of power failure alarm, including：Voltage conversion unit, collection power system voltage carry out rectification processing, output voltage signal；Signal isolation unit, receiving voltage signal, signal conversion is carried out, export isolation voltage signal；Amplifying unit, isolation voltage signal is amplified processing, output identification voltage signal；Signal behavior unit, identification voltage signal is received, carry out voltage ratio compared with output control voltage signal；Ring unit, control voltage signal and identification voltage signal are received, exports voice signal.The utility model is selected monitoring voltage, reduces the damage to buzzer, can be used peak of power consumption and offpeak period respectively, reliability enhancing, be simplified circuit, cost is low, suitable for promoting.
Description
Technical field
Monitoring field is the utility model is related to, more particularly to a kind of power failure alarm.
Background technology
Power system by power plant, send and become electric line, the electrical energy production formed for links such as distribution substation and electricity consumptions with disappearing
Charge system.Its function is that the primary energy of nature changed into electric energy by generation power device, then through transmission of electricity, power transformation and
Distribution supplies power to each user.To realize this function, power system also has corresponding in links and different levels
Information and control system, the production process of electric energy is measured, adjusted, controlled, protect, communicates and dispatched, to ensure to use
Family obtains safety, high-quality electric energy.
When power system is broken down, strong change occurs in voltage, and the alarm of common direct sensing holds
It is fragile, and when running into the catastrophe failures such as short circuit, power system can be cut off automatically, at failure initial stage, it is necessary to failure
Prompted.
The content of the invention
Goal of the invention of the present utility model is：Solve the problems, such as failure power failure accurately detection and alarm.For existing
A kind of the problem of with the presence of technology, there is provided power failure alarm.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of power failure alarm, including：
Voltage conversion unit, collection power system voltage carry out rectification processing, output voltage signal；
Signal isolation unit, receiving voltage signal, signal conversion is carried out, export isolation voltage signal；
Amplifying unit, isolation voltage signal is amplified processing, output identification voltage signal；
Signal behavior unit, identification voltage signal is received, carry out voltage ratio compared with output control voltage signal；
Ring unit, control voltage signal and identification voltage signal are received, exports voice signal.
Further scheme is：The output end of voltage conversion unit is also connected with voltage protection circuit and filter circuit.
Further scheme is：Voltage conversion unit includes：Rectifier bridge D1, rectifier bridge D1 input are also associated with fusing
Resistance F1, rectifier bridge D1 output end output voltage signals.
Further scheme is：Signal isolation unit includes：Photoelectric tube U1, photoelectric tube U1 positive input 1 connect electricity
Position meter R3, photoelectric tube U1 negative input 2 are grounded, and photoelectric tube U1 output forward ends 4 are connected with resistance R4, photoelectric tube U1 outputs
Negative end 3 is connected with resistance R1, resistance R1 other ends ground connection；Photoelectric tube U1 exports negative end 3 as the defeated of signal isolation unit
Go out end.
Further scheme is：Amplifying unit includes：Transistor Q1, transistor Q1 colelctor electrode are connected with resistance R6, electricity
The resistance R6 other end is connected with power supply VCC, and transistor Q1 emitter stage is connected with resistance R5, and resistance R5 other end ground connection is brilliant
Output end of the body pipe Q1 emitter stage as amplifying unit, the input of transistor Q1 ground level as amplifying unit.
Further scheme is：Signal behavior unit (5) includes:Comparator U2 and door U4A and comparator U3, comparator
U2 negative input and the input that comparator U3 positive input is signal behavior unit (5), comparator U2 forward direction
The negative input that input is connected with reference voltage regulation resistance R7, comparator U3 is connected with reference voltage regulation resistance R8,
Comparator U2 and the connection of comparator U3 output ends and door U4A, with door U4A output control voltage signals.
Further scheme is：Ring unit includes：Transistor Q2, transistor Q2 colelctor electrode are connected with resistance R9, electricity
R9 other end access identification voltage signal is hindered, transistor Q2 ground level is connected with resistance R10, resistance R10 other end access
Control voltage signal, transistor Q2 emitter stage are connected with buzzer U5.
Further scheme is：Voltage protection circuit includes：Voltage-stabiliser tube D3 and controllable silicon D2, voltage-stabiliser tube D3 negative end connect
Resistance R2 and electric capacity C1, resistance R2 and electric capacity C1 other end ground connection are connected to, voltage-stabiliser tube D3 is connected with controllable silicon D2 forward end
Connect, voltage-stabiliser tube D3 negative end is also connected with controllable silicon D2 control terminal.
Further scheme is：Filter circuit is filter capacitor C2.
In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are：
1. comparator U2 and comparator U3 set scope range of the fluctuation of voltage by voltage-regulation resistance R7 and R8 respectively, voltage is adjusted
Economize on electricity resistance R7 sets a ceiling voltage, and voltage-regulation resistance R8 sets a low-voltage, discharged limit fault, only worked as electricity
Force system voltage in the scope fluctuation of setting, influence light emitting diode in photoelectric tube U1 it is luminous when, can just send alarm
Sound.Monitoring voltage is selected, reduces the damage to buzzer, when can use peak of power consumption and ebb respectively
Section, reliability enhancing, simplifies circuit, and cost is low, suitable for promoting.
2. voltage-stabiliser tube D3 and controllable silicon D2, voltage-stabiliser tube D3 negative end are connected with resistance R2 and electric capacity C1, resistance R2 and electricity
Hold C1 other end ground connection, voltage-stabiliser tube D3 is connected with controllable silicon D2 forward end, and voltage-stabiliser tube D3 negative end is also connected with controllable
Silicon D2 control terminal.This voltage protection circuit, aerial drainage element controllable silicon D2 is added, when overtension, voltage-stabiliser tube D3 conductings,
Controllable silicon D2 conductings simultaneously, accelerate the release of electric current.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
Embodiment 1
Fig. 1 is shown：A kind of power failure alarm, including：
Voltage conversion unit 1, collection power system voltage carry out rectification processing, output voltage signal；
Signal isolation unit 3, receiving voltage signal, signal conversion is carried out, export isolation voltage signal；
Amplifying unit 4, isolation voltage signal is amplified processing, output identification voltage signal；
Signal behavior unit 5, identification voltage signal is received, carry out voltage ratio compared with output control voltage signal；
Ring unit 6, control voltage signal and identification voltage signal are received, exports voice signal.Voltage conversion unit 1
Output end is also connected with voltage protection circuit 2 and filter circuit.
Embodiment 2
Fig. 1 is shown：On the basis of embodiment one, voltage conversion unit 1 includes：Rectifier bridge D1, rectifier bridge D1's is defeated
Enter end and be also associated with fusing resistor F1, fusing resistor F1 other end connection power supply V1, rectifier bridge D1 output ends output voltage letter
Number.
Voltage protection circuit 2 includes：Voltage-stabiliser tube D3 and controllable silicon D2, voltage-stabiliser tube D3 negative end are connected with resistance R2 and electricity
Hold C1, resistance R2 and electric capacity C1 other end ground connection, voltage-stabiliser tube D3 is connected with controllable silicon D2 forward end, and voltage-stabiliser tube D3's is negative
Controllable silicon D2 control terminal is also connected with to end；Filter circuit is filter capacitor C2；Filter capacitor C2 connection rectifier bridge D1 output ends
Forward end 3, voltage-stabiliser tube D3 connection rectifier bridge D1 output ends forward end 3.
Signal isolation unit 3 includes：Photoelectric tube U1, photoelectric tube U1 positive input 1 connect potentiometer R3, photoelectric tube U1
Negative input 2 be grounded, photoelectric tube U1 output forward ends 4 are connected with resistance R4, and photoelectric tube U1 outputs negative end 3 is connected with electricity
Hinder R1, resistance R1 other ends ground connection；Photoelectric tube U1 exports output end of the negative end 3 as signal isolation unit 3.
Amplifying unit 4 includes：Transistor Q1, transistor Q1 colelctor electrode are connected with resistance R6, and the resistance R6 other end connects
Power supply VCC is connected to, transistor Q1 emitter stage is connected with resistance R5, resistance R5 other end ground connection, transistor Q1 emitter stage
As the output end of amplifying unit 4, the input of transistor Q1 ground level as amplifying unit 4；Potentiometer R3 connection voltage-stabiliser tubes
D3 forward end；Power supply VCC connections resistance R4, transistor Q1 ground level connection photoelectric tube U1 output negative ends 3.
Signal behavior unit 5 includes:Comparator U2 and door U4A and comparator U3, comparator U2 negative input and ratio
Positive input compared with device U3 is the input of signal behavior unit 5, and comparator U2 positive input is connected with reference voltage
It is defeated that regulation resistance R7, comparator U3 negative input are connected with reference voltage regulation resistance R8, comparator U2 and comparator U3
Go out end connection and door U4A, with door U4A output control voltage signals；Reference voltage regulation resistance R7 and R8 are also attached to power supply
VCC, comparator U2 negative input connect transistor Q1 emitter stage with comparator U3 positive input.Only work as crystal
Positive input setting of the identification voltage signal of pipe Q1 emitter stages output in comparator U2 negative input and comparator U3
Point range in, while export high level, high level just exported with door U4A.
Ring unit 6 includes：Transistor Q2, transistor Q2 colelctor electrode are connected with resistance R9, resistance R9 another termination
Enter and identify voltage signal, transistor Q2 ground level is connected with resistance R10, and resistance R10 other end Access Control voltage signal is brilliant
Body pipe Q2 emitter stage is connected with buzzer U5；High level is just exported in U4A, transistor Q2 conductings, identifies voltage signal ability
Control buzzer U5 is converted into voice signal.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
- A kind of 1. power failure alarm, it is characterised in that including：Voltage conversion unit (1), collection power system voltage carry out rectification processing, output voltage signal；Signal isolation unit (3), receiving voltage signal, signal conversion is carried out, export isolation voltage signal；Amplifying unit (4), isolation voltage signal is amplified processing, output identification voltage signal；Signal behavior unit (5), identification voltage signal is received, carry out voltage ratio compared with output control voltage signal；Ring unit (6), control voltage signal and identification voltage signal are received, exports voice signal.
- 2. a kind of power failure alarm as claimed in claim 1, it is characterised in that the output end of voltage conversion unit (1) is also Connect voltage protection circuit (2) and filter circuit.
- 3. a kind of power failure alarm as claimed in claim 1, it is characterised in that voltage conversion unit (1) includes：Rectifier bridge D1, rectifier bridge D1 input are also associated with fusing resistor F1, rectifier bridge D1 output end output voltage signals.
- 4. a kind of power failure alarm as claimed in claim 1, it is characterised in that signal isolation unit (3) includes：Photoelectric tube U1, photoelectric tube U1 positive input 1 connect potentiometer R3, and photoelectric tube U1 negative input 2 is grounded, and photoelectric tube U1 is exported just Resistance R4 is connected with to end 4, photoelectric tube U1 outputs negative end 3 is connected with resistance R1, resistance R1 other ends ground connection；Photoelectric tube U1 is defeated Go out output end of the negative end 3 as signal isolation unit (3).
- 5. a kind of power failure alarm as claimed in claim 1, it is characterised in that amplifying unit (4) includes：Transistor Q1, Transistor Q1 colelctor electrode is connected with resistance R6, and the resistance R6 other end is connected with power supply VCC, transistor Q1 emitter stage connection There is a resistance R5, resistance R5 other end ground connection, the output end of transistor Q1 emitter stage as amplifying unit (4), transistor Q1 Input of the ground level as amplifying unit (4).
- 6. a kind of power failure alarm as claimed in claim 1, it is characterised in that signal behavior unit (5) includes:Comparator U2 and door U4A and comparator U3, comparator U2 negative input and comparator U3 positive input are signal behavior unit (5) input, comparator U2 positive input are connected with reference voltage regulation resistance R7, comparator U3 negative input The connection of reference voltage regulation resistance R8, comparator U2 and comparator U3 output end and door U4A are connected with, with door U4A output controls Voltage signal.
- 7. a kind of power failure alarm as claimed in claim 1, it is characterised in that ring unit (6) includes：Transistor Q2, Transistor Q2 colelctor electrode is connected with resistance R9, resistance R9 other end access identification voltage signal, and transistor Q2 ground level connects Resistance R10, resistance R10 other end Access Control voltage signal are connected to, transistor Q2 emitter stage is connected with buzzer U5.
- 8. a kind of power failure alarm as claimed in claim 2, it is characterised in that voltage protection circuit (2) includes：Voltage-stabiliser tube D3 and controllable silicon D2, voltage-stabiliser tube D3 negative end are connected with resistance R2 and electric capacity C1, resistance R2 and electric capacity C1 other end ground connection, Voltage-stabiliser tube D3 is connected with controllable silicon D2 forward end, and voltage-stabiliser tube D3 negative end is also connected with controllable silicon D2 control terminal.
- 9. a kind of power failure alarm as claimed in claim 2, it is characterised in that filter circuit is filter capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682784.XU CN207074236U (en) | 2017-06-13 | 2017-06-13 | A kind of power failure alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682784.XU CN207074236U (en) | 2017-06-13 | 2017-06-13 | A kind of power failure alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207074236U true CN207074236U (en) | 2018-03-06 |
Family
ID=61512838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720682784.XU Expired - Fee Related CN207074236U (en) | 2017-06-13 | 2017-06-13 | A kind of power failure alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207074236U (en) |
-
2017
- 2017-06-13 CN CN201720682784.XU patent/CN207074236U/en not_active Expired - Fee Related
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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: 20180306 Termination date: 20180613 |