CN203773700U - Power-failure alarm device - Google Patents
Power-failure alarm device Download PDFInfo
- Publication number
- CN203773700U CN203773700U CN201420116197.0U CN201420116197U CN203773700U CN 203773700 U CN203773700 U CN 203773700U CN 201420116197 U CN201420116197 U CN 201420116197U CN 203773700 U CN203773700 U CN 203773700U
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- power
- failure
- circuit
- alarming device
- triode
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Abstract
The utility model discloses a power-failure alarm device which includes a switching circuit, a power-supply circuit and an alarm circuit. The power-supply circuit is connected with the switching circuit and the alarm circuit. The power-failure alarm device is started and stopped through the switching circuit according to input switching signals. When the device is started, the power-supply circuit stores electric energy before power failure and supplies power to the power-failure alarm device after the power failure. The alarm circuit sends out alarm sounds after detecting the power failure so that operators can be notified timely to take corresponding measures to reduce loss and electronic elements used in the circuits are all conventional elements and the circuits are simple in structure and lower in cost.
Description
Technical field
The utility model relates to power supply technique field, particularly a kind of power-failure alarming device.
Background technology
The places such as production line in freezer, security protection, power equipment, bank, telecommunications, factory, railway, machine room, uninterrupted power source, running in 24 hours must guarantee to power incessantly, grid power blackout or other factors cause supply line to have a power failure, and will bring great inconvenience and certain economic loss to people's production, life.Such as: the aquarium fish of raising in family or the cultivation of fishes and shrimps booth or pool aquaculture etc. all need the oxygen supply incessantly of lasting electric energy, if user has a power failure and causes oxygen supply to stop suddenly in bed, can make fishes and shrimps sick even dead, to user, bring certain economic loss.Again for example; though have many enterprises or family that monitoring is installed, implement safeguard protection; if have a power failure or by other people, deliberately cut off the electricity supply and cause monitoring to be lost efficacy, cause user cannot effectively grasp indoor situation, once stolen, cannot obtain associated video evidence and recover damage to property.Therefore,, based on the above-mentioned place that must guarantee uninterrupted power supply, need to notify in time afterwards operator to take corresponding measure to reduce the loss in power failure.
At present on the market common alarm for electricity failure by power cut detection circuit, internal battery, huge control GRM200 power failure alarm host machine forms, can be after power failure sounding alarm reported to the police or sent note to the phone number dial pre-setting in 10 seconds.These common alarm for electricity failure are provided with housing, form an equipment independently, need related accessory (as power interface or socket) to be connected with monitored equipment during use, its complicated structure, power consumption greatly and cost higher.In addition, because common alarm for electricity failure is by socket or data line and equipment connection to be monitored, if socket does not insert firmly or data line wearing and tearing cause junction loose contact, will make alarm for electricity failure lose efficacy, monitoring, alarming effectively can not have a power failure.
In view of this, the utility model provides a kind of power-failure alarming device.
Utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of power-failure alarming device, to solve existing alarm for electricity failure complicated structure, problem that cost is higher.
In order to achieve the above object, the utility model has been taked following technical scheme:
A power-failure alarming device, it comprises:
For open and close the on-off circuit of described power-failure alarming device according to the switching signal of input;
For storage of electrical energy before power failure, the feed circuit of powering to described power-failure alarming device after having a power failure;
For detection of the warning circuit sounding the alarm after having a power failure;
Described feed circuit connecting valve circuit and warning circuit.
Described power-failure alarming device, wherein, described on-off circuit comprises the first triode, the control end that the base stage of described the first triode is power-failure alarming device, the collector and emitter of the first triode connects feed circuit.
Described power-failure alarming device, wherein, described the first triode is NPN triode.
Described power-failure alarming device, wherein, described feed circuit comprise the first resistance, the second resistance, the first diode and storage capacitor, the power end that one end of described the first resistance is power-failure alarming device; The other end of the first resistance connect the first diode positive pole, go back connecting valve circuit, the negative pole of the first diode connects the positive pole of storage capacitor and one end of the second resistance, the minus earth of storage capacitor, the other end of the second resistance connects warning circuit.
Described power-failure alarming device, wherein, described warning circuit comprises the 3rd resistance, the 4th resistance, the 5th resistance, the second triode, unijunction transistor and piezoelectric ceramic piece, the base stage of described the second triode connects the power end of power-failure alarming device by the 5th resistance, the collector of the second triode connects feed circuit, also by the 3rd resistance, connects the first base stage of unijunction transistor, the emitter of described unijunction transistor by the 4th resistance connect the first base stage of unijunction transistor, also by piezoelectric ceramic piece ground connection, the grounded emitter of described the second triode.
Described power-failure alarming device, wherein, described the second triode is NPN triode.
Described power-failure alarming device, wherein, described on-off circuit, feed circuit and warning circuit are integrated on circuit board.
Compared to prior art, a kind of power-failure alarming device that the utility model provides, by on-off circuit, according to the switching signal of input, open and close described power-failure alarming device, during unlatching, feed circuit, in storage of electrical energy before power failure, are powered to described power-failure alarming device after having a power failure, warning circuit sounds the alarm after detecting and having a power failure, can notify in time operator to take corresponding measure to reduce the loss, and the electronic component using in circuit is conventional element, circuit structure is simple, cost is lower.
Accompanying drawing explanation
The structured flowchart of the power-failure alarming device that Fig. 1 provides for the utility model embodiment.
The circuit diagram of the power-failure alarming device that Fig. 2 provides for the utility model embodiment.
Embodiment
The utility model provides a kind of power-failure alarming device, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, the power-failure alarming device that the utility model embodiment provides comprises on-off circuit 100, feed circuit 200 and warning circuit 300, described feed circuit 200 connecting valve circuit 100 and warning circuit 300.Described on-off circuit 100 is for opening and closing described power-failure alarming device according to the switching signal of input.After power-failure alarming device is opened, feed circuit 200 storage of electrical energy before power failure, powers to described power-failure alarming device after having a power failure.Warning circuit 300 sounds the alarm after detecting and having a power failure, and reminds operator to take corresponding power supply measure to reduce the loss.
During concrete enforcement, described on-off circuit 100, feed circuit 200 and warning circuit 300 can be integrated on a circuit board, and described circuit board is arranged in the equipment that needs monitoring, are connected with power module, the control chip of device interior.Like this without the accessories such as housing, socket are set, can simplify the structure of power-failure alarming device.And, the present embodiment is directly fixed on device interior by described power-failure alarming device (being circuit board form) before equipment dispatches from the factory, can avoid existing Shell-Class alarm for electricity failure and equipment connection to be monitored place's loose contact to cause power failure problem that alarm lost efficacy.
It will be appreciated that, the power module of equipment, control chip are prior art.The present embodiment adopts power module to provide power supply so that can storage of electrical energy before power failure for feed circuit 200.The control chip of equipment opens and closes described power-failure alarming device for input switch signal.The present embodiment is not construed as limiting the concrete structure of power module, control chip, as long as it can meet above-mentioned functions.
Please refer to Fig. 2, in the present embodiment, described on-off circuit 100 comprises the first triode Q1, the switching signal of the control end I/O(input that the base stage of described the first triode Q1 (being the 1st end of on-off circuit 100) is power-failure alarming device, during concrete enforcement, be connected with the control chip of equipment), the collector of the first triode Q1 (being the 3rd end of on-off circuit 100) connects the first control end a of feed circuit 200, and the emitter of the first triode Q1 (being the 2nd end of on-off circuit 100) connects the second control end b of feed circuit 200.Described the first triode Q1 is NPN triode.
When signal (Low level effective) is opened in the control end I/O of power-failure alarming device input, the first triode Q1 cut-off starts feed circuit 200, and power module provides voltage to power to power-failure alarming device, and power-failure alarming device starts, and power failure warning function is opened.When signal (high level is effective) is closed in described control end I/O input, the first triode Q1 conducting is closed feed circuit 200, and power module provides voltage cannot input in power-failure alarming device, and power-failure alarming device is not worked, and power failure warning function is closed.
Correspondingly, described feed circuit 200 comprise the first resistance R 1, the second resistance R 2, the first diode D1 and storage capacitor C1.One end of described the first resistance R 1 is that the input end in(of feed circuit 200 is also the power end VCC of power-failure alarming device, the power module of connection device during concrete enforcement, input+5V～+ 15V voltage), the other end of the first resistance R 1 connect the first diode D1 positive pole (be the first control end of feed circuit 200 a), the 2nd end of connecting valve circuit 100 (i.e. the collector of the first triode Q1) also, the negative pole of the first diode D1 connects the positive pole of storage capacitor C1 and one end of the second resistance R 2, the minus earth of storage capacitor C1, the other end of the second resistance R 2 (being the output terminal out of feed circuit 200) connects warning circuit 300.
When signal (Low level effective) is opened in the control end I/O of power-failure alarming device input, the first triode Q1 cut-off, power end VCC input power charges to storage capacitor C1.After power failure, by storage capacitor C1, power to described power-failure alarming device.The capacitance of storage capacitor C1 has determined the length of time of fire alarming.
When signal (high level is effective) is closed in described control end I/O input, the first triode Q1 conducting, is equivalent to make the path short circuit of negative pole of the positive best storage capacitor C1 of the first diode D1, and no current is by the first diode D1, power-failure alarming device is not worked, and power failure warning function is closed.Electric current backflow when described the first diode D1 can prevent from having a power failure on storage capacitor C1, guarantees that the electric energy of storage capacitor C1, only to warning circuit 300 power supplies, has correspondingly guaranteed the 300 lasting times of work of warning circuit.
Described warning circuit 300 comprises the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the second triode Q2, unijunction transistor Q3 and piezoelectric ceramic piece SP1, the power end VCC(that the base stage of described the second triode Q2 connects power-failure alarming device by the 5th resistance R 5 is one end of the first resistance R 1), the output terminal out(that the collector of the second triode Q2 connects feed circuit 200 is the other end of the second resistance R 2), also by the 3rd resistance R 3, connect the first base stage b1 of unijunction transistor Q3, the emitter e of described unijunction transistor Q3 connects the first base stage b1 of unijunction transistor Q3 by the 4th resistance R 4, also by piezoelectric ceramic piece SP1, connect the second base stage b2 of unijunction transistor Q3, the equal ground connection of the second base stage b2 of the emitter of described the second triode Q2 and unijunction transistor Q3.
Wherein, described the second triode Q2 is NPN triode, has power failure detection effect, while having electricity, by the second triode Q2, control electric current and flow to ground, can forbid piezoelectric ceramic piece sounding, during power failure, the second triode Q2 changes current direction, and electric current flows through piezoelectric ceramic piece makes its sounding.Described unijunction transistor Q3 is equivalent to the oscillator of power-failure alarming device, known according to its pipe characteristic, unijunction transistor Q3 interval break-make while having electric current to flow through.Described piezoelectric ceramic piece SP1 is a kind of electrophonic musical element, when its two ends have electric current to flow through, sounds.The interval break-make of unijunction transistor Q3 also flows through at corresponding interval the electric current on piezoelectric ceramic piece SP1, and piezoelectric ceramic piece SP1 sends " beep " sound of interruption.
When the power end VCC of power-failure alarming device input power (high voltage), the second triode Q2 conducting makes electric current can not pass through unijunction transistor Q3 and piezoelectric ceramic piece SP1, thereby while guaranteeing not have a power failure, piezoelectric ceramic piece SP1 does not sound the alarm and more input powers are charged to storage capacitor C1.Be full of the electric current continuing to flow into after electricity and be switched to and flow away by the second triode Q2, avoid large electric current to burn piezoelectric ceramic piece SP1 or its mistake sounding.
When the power end VCC of power-failure alarming device non-transformer (have a power failure), the second triode Q2 cut-off, the electric current on storage capacitor C1 flows through unijunction transistor Q3, makes unijunction transistor Q3 interval break-make, control intermittently sounding of piezoelectric ceramic piece SP1, thereby realize power failure warning function.
Please continue to refer to Fig. 1, the concrete duty of power-failure alarming device that the present embodiment provides comprises following aspect:
One, power-failure alarming device is closed.Now the pass signal of described control end I/O input high level, controls the first triode Q1 conducting, by the path short circuit of the negative pole of the positive best storage capacitor C1 of the first diode D1.
While 1, having electricity, because the short circuit effect of the first triode Q1 causes not having electric current to flow through the first diode D1, just can not charge to storage capacitor C1 yet.Simultaneously, power end VCC input power makes the second triode Q2 conducting, by the other end of the second resistance R 2, be that the output terminal out of feed circuit 200 draws and leads to ground, on piezoelectric ceramic piece SP1 and unijunction transistor Q3, no current does not sound the alarm by, piezoelectric ceramic piece SP1 yet.
While 2, having a power failure, power end VCC, the equal input low level of control end I/O.Power-failure alarming device is not closed to storage capacitor C1 charging owing to having electricity, even the second triode Q2 cut-off, storage capacitor C1 does not have electric current to pass through unijunction transistor Q3 and piezoelectric ceramic piece SP1 yet, and piezoelectric ceramic piece SP1 can not sound the alarm.
Two, power-failure alarming device is opened.Now described control end I/O input low level open signal, control the first triode Q1 cut-off, decontrol the path of negative pole of the positive best storage capacitor C1 of the first diode D1.
While 1, having electricity, due to the first triode Q1 cut-off, the electric current of power end VCC output flows through successively the first resistance R 1, the first diode D1, storage capacitor C1 is charged.Meanwhile, power end VCC input power makes the second triode Q2 conducting, and the output terminal out of feed circuit 200 is drawn and leads to ground.Storage capacitor C1 is full of the electric current continuing to flow into after electricity and is switched to and is flowed away by the second triode Q2, and now the upper no current of piezoelectric ceramic piece SP1 and unijunction transistor Q3 does not sound the alarm by, piezoelectric ceramic piece SP1.
While 2, having a power failure, power end VCC, the equal input low level of control end I/O.Storage capacitor C1 has been full of electricity owing to having electricity, the second triode Q2 cut-off makes the electric current on storage capacitor C1 flow through unijunction transistor Q3 and piezoelectric ceramic piece SP1, unijunction transistor Q3 interval break-make makes piezoelectric ceramic piece SP1 intermittently can send the alarm song of " beep-beep-", remind operator to take corresponding power supply measure to reduce the loss, thereby played the function that has a power failure and report to the police.
Although now the first triode Q1 also ends, because the characteristic of the first diode D1 has been avoided the electric current backflow on storage capacitor C1, guarantee that the electric energy of storage capacitor C1 is only to unijunction transistor Q3 and piezoelectric ceramic piece SP1 power supply.
In sum, the utility model can open and close according to the switching signal of input the power failure warning function of power-failure alarming device, before power failure warning function is opened and had a power failure, the storage capacitor in feed circuit is charged with storage of electrical energy, and by the second triode, control piezoelectric ceramic piece and do not sound; After power failure, by storage capacitor, powered, the second triode is controlled electric current after detecting and having a power failure and is flow through unijunction transistor and piezoelectric ceramic piece, and piezoelectric ceramic piece is sounded the alarm, and notifies in time operator to take corresponding measure to reduce the loss; And the electronic component using in circuit is conventional element, circuit structure is simple, cost is lower.
Simultaneously, each circuit in described power-failure alarming device all can be integrated on circuit board, be set directly at the device interior that needs monitoring, without the accessories such as housing, socket are set as prior art, simplified the structure of power-failure alarming device, also avoid existing Shell-Class alarm for electricity failure and equipment connection to be monitored place's loose contact to cause power failure problem that alarm lost efficacy.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (7)
1. a power-failure alarming device, is characterized in that, comprising:
For open and close the on-off circuit of described power-failure alarming device according to the switching signal of input;
For storage of electrical energy before power failure, the feed circuit of powering to described power-failure alarming device after having a power failure;
For detection of the warning circuit sounding the alarm after having a power failure;
Described feed circuit connecting valve circuit and warning circuit.
2. power-failure alarming device according to claim 1, is characterized in that, described on-off circuit comprises the first triode, the control end that the base stage of described the first triode is power-failure alarming device, and the collector and emitter of the first triode connects feed circuit.
3. power-failure alarming device according to claim 2, is characterized in that, described the first triode is NPN triode.
4. power-failure alarming device according to claim 1, is characterized in that, described feed circuit comprise the first resistance, the second resistance, the first diode and storage capacitor, the power end that one end of described the first resistance is power-failure alarming device; The other end of the first resistance connect the first diode positive pole, go back connecting valve circuit, the negative pole of the first diode connects the positive pole of storage capacitor and one end of the second resistance, the minus earth of storage capacitor, the other end of the second resistance connects warning circuit.
5. power-failure alarming device according to claim 1, it is characterized in that, described warning circuit comprises the 3rd resistance, the 4th resistance, the 5th resistance, the second triode, unijunction transistor and piezoelectric ceramic piece, the base stage of described the second triode connects the power end of power-failure alarming device by the 5th resistance, the collector of the second triode connects feed circuit, also by the 3rd resistance, connect the first base stage of unijunction transistor, the emitter of described unijunction transistor connects the first base stage of unijunction transistor by the 4th resistance, also by piezoelectric ceramic piece ground connection, the grounded emitter of described the second triode.
6. power-failure alarming device according to claim 5, is characterized in that, described the second triode is NPN triode.
7. power-failure alarming device according to claim 1, is characterized in that, described on-off circuit, feed circuit and warning circuit are integrated on circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420116197.0U CN203773700U (en) | 2014-03-14 | 2014-03-14 | Power-failure alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420116197.0U CN203773700U (en) | 2014-03-14 | 2014-03-14 | Power-failure alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203773700U true CN203773700U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420116197.0U Expired - Fee Related CN203773700U (en) | 2014-03-14 | 2014-03-14 | Power-failure alarm device |
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| CN (1) | CN203773700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093055A (en) * | 2015-07-23 | 2015-11-25 | 合肥美的电冰箱有限公司 | Power outage alarm system and household electrical appliance |
| CN105698924A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless vibration sensor based on wifi |
-
2014
- 2014-03-14 CN CN201420116197.0U patent/CN203773700U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093055A (en) * | 2015-07-23 | 2015-11-25 | 合肥美的电冰箱有限公司 | Power outage alarm system and household electrical appliance |
| CN105698924A (en) * | 2016-04-26 | 2016-06-22 | 成都众山科技有限公司 | Wireless vibration sensor based on wifi |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20210314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |