CN206457131U - Elevator power failure warning circuit - Google Patents
Elevator power failure warning circuit Download PDFInfo
- Publication number
- CN206457131U CN206457131U CN201720053591.8U CN201720053591U CN206457131U CN 206457131 U CN206457131 U CN 206457131U CN 201720053591 U CN201720053591 U CN 201720053591U CN 206457131 U CN206457131 U CN 206457131U
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- chip
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of elevator power failure warning circuit, including power circuit, including the first power supply for being electrically connected with city and the stand-by power supply for being coupled to the first power supply；Switch selection circuit, is coupled to the first power supply and stand-by power supply, for selecting the first power supply of connection still to connect stand-by power supply；Delay circuit, is coupled to switch selection circuit, when switch selection circuit connects stand-by power supply, exports time delayed signal；Warning circuit, is coupled to delay circuit with reception delay signal, for reminding staff that elevator power failure needs on-call maintenance；Charged by civil power for stand-by power supply, can effectively utilize power supply；When the first power cut-off, switch selection circuit is connected with stand-by power supply, so that stand-by power supply is powered for delay circuit, it is final to cause loudspeaker sounding to reach the purpose for reminding staff；In addition, working as the first power cut-off time very in short-term, loudspeaker will not sounding.
Description
Technical field
The utility model is related to elevator safety protection technology field, more specifically, it relates to which a kind of elevator power failure is alarmed
Circuit.
Background technology
With the progress and expanding economy of society, built-up state is presented in increasing place, so each
Multiple vertical lifts can be all configured in individual high building, so that the substantial amounts of stream of people uses.But, if there is event suddenly in elevator power supply
Barrier, if distant place switchgear house operator on duty can not have found in time, now, the passenger just on elevator may be alarmed, or even occurs
More serious elevator accident.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of elevator power failure warning circuit,
Switchgear house personnel can be notified in time when elevator power supply breaks down, the efficiency of elevator trimming is improved.
To achieve the above object, the utility model provides following technical scheme：
A kind of elevator power failure warning circuit, including:
Power circuit, including the first power supply for being electrically connected with city and the stand-by power supply for being coupled to first power supply；
Switch selection circuit, is coupled to first power supply and stand-by power supply, for selecting the first power supply of connection still to connect
Connect stand-by power supply；
Delay circuit, is coupled to the switch selection circuit, when the switch selection circuit connects the stand-by power supply,
Export time delayed signal；
Warning circuit, is coupled to the delay circuit to receive the time delayed signal, for reminding staff that elevator stops
Electricity needs on-call maintenance.
By using above-mentioned technical proposal, when the first power supply normal work, when switch selection circuit connects the first power supply,
Delay circuit does not work, now, and the first power supply charges for stand-by power supply；When the first power supply irregular working, switch selection electricity
Road connects stand-by power supply, and now delay circuit works, and to trigger warning circuit work, reminds personnel in work to be tieed up in time
Repair, improve elevator faults maintenance efficiency；Meanwhile, the electricity of stand-by power supply is provided by the first power supply, and electricity can be made to reach effective utilization.
Further, the switch selection circuit includes：
Relay, including normally-closed contact and normally opened contact, the normally-closed contact are coupled to first power supply, normally opened contact
It is coupled to the delay circuit；Coil one end of the relay is coupled to the stand-by power supply；
The first transistor, its colelctor electrode is coupled to the other end of the relay coil, and base stage is coupled to the standby electricity
Source；
Second transistor, its colelctor electrode is coupled to the base stage of the first transistor, and grounded emitter, base stage passes through resistance
Ground connection.
By using above-mentioned technical proposal, when the first power supply normal work, second transistor conducting, the first transistor is cut
Only so that relay does not work, the normally-closed contact closure of relay so that the first power supply is connected as stand-by power supply with stand-by power supply
Charging；Once the first power cut-off, the first transistor conducting, second transistor cut-off so that the coil electricity of relay, relay
The normally opened contact closure of device, now providing high level signal for delay circuit makes delay circuit start working.
Further, the delay circuit includes the one 555 chip and the 2nd 555 chip being sequentially connected, described first
Reset terminal, low triggering end and the high-triggering end of 555 chips, the low triggering end of the 2nd 555 chip and high-triggering end are coupled to institute
State the normally opened contact of relay, and the output end of the one 555 chip is coupled to the reset terminal of the 2nd 555 chip.
By using above-mentioned technical proposal, the one 555 chip constitutes Schmidt trigger, and the 2nd 555 chip constitutes multi resonant
Oscillator, when the first power supply does not work, reset terminal, low triggering end and the high-triggering end of the one 555 chip receive high level
Signal, the one 555 chip is started working, and output high level signal makes second into the 2nd 555 chip after a certain time
555 chips are started working, so that high level signal is exported, if the first electricity before the one 555 chip output high level signal
Source recovers normal, then the 2nd 555 chip do not work so as to when warning circuit behind do not work.
Further, the warning circuit includes the amplifying circuit and coupling for being coupled to the 2nd 555 chip output
It is connected to the loudspeaker of the amplification circuit output end.
By using above-mentioned technical proposal, the amplified circuit amplification of high level signal of the 2nd 555 chip output output
The amplified signal of speakers fit is exported afterwards.
Further, the amplifying circuit includes audio-frequency amplifier, and the 2nd 555 chip output is coupled to the sound
The input of audio amplifier.
By using above-mentioned technical proposal, audio-frequency amplifier is more adapted to loudspeaker.
Further, first power supply includes being used for the first protection component for protecting circuit below, is coupled to described the
The one protection tranformer protection component of component, the transformer for being coupled to the tranformer protection component for decompression, it is coupled to
The rectification circuit of the transformer secondary coil and the mu balanced circuit for being coupled to the rectification circuit；
City is electrically accessed after first power supply, sequentially passes through the first protection component and the tranformer protection component,
After being depressured again by transformer, alternating current is changed into by direct current by rectification circuit, the direct current is after mu balanced circuit
Export stable voltage.
By using above-mentioned technical proposal, the first protection component can play protection circuit below when civil power inputs excessive
Effect, and tranformer protection component can protect transformer not to be burned, after the rectified circuit rectifies of the AC power after decompression
To direct current, and it is that circuit below is powered to obtain stable voltage after mu balanced circuit.
Compared with prior art, the utility model has the advantages that：Charged by civil power for stand-by power supply, can effectively utilize electricity
Source；When the first power cut-off, switch selection circuit is connected with stand-by power supply, so that stand-by power supply supplies for delay circuit
Electricity, it is final to cause loudspeaker sounding to reach the purpose for reminding staff；In addition, when the first power cut-off time is very short, raising one's voice
Device will not sounding.
Brief description of the drawings
Fig. 1 is system block diagram of the present utility model；
Fig. 2 is the circuit theory diagrams of power circuit；
Fig. 3 is the integrated circuit schematic diagram of warning circuit.
Reference：1st, power circuit；10th, the first power supply；11st, the first protection component；12nd, tranformer protection component；13、
Transformer；14th, rectification circuit；15th, mu balanced circuit；16th, stand-by power supply；2nd, switch selection circuit；21st, relay；3rd, be delayed electricity
Road；31st, Schmidt trigger；32nd, multivibrator；4th, warning circuit；41st, amplifying circuit.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of elevator power failure warning circuit, reference picture 1, including power circuit 1, the power circuit 1 include electrically connecting with city
The first power supply 10 and be coupled to the stand-by power supply 16 of the first power supply 10, stand-by power supply 16 is powered acquisition by the first power supply 10,
And when the first power supply 10 does not work, stand-by power supply 16 can work.It is coupled to the first power supply 10 and stand-by power supply 16 is provided with use
In the first power supply of selection connection 10 or the connection switch selection circuit 2 of stand-by power supply 16；Switch selection circuit 2 is coupled to be provided with
Delay circuit 3, when switch selection circuit 2 connects stand-by power supply 16, exports time delayed signal；Delay circuit 3 is coupled to be provided with
Warning circuit 4, the reception delay signal of warning circuit 4, for reminding staff that elevator power failure needs on-call maintenance.When the first electricity
When source 10 does not work, warning circuit 4 works, to remind personnel's on-call maintenance circuit in work.
Reference picture 2, is the circuit theory diagrams of the first power supply 10.First power supply 10 includes being coupled to opening for suppression for civil power
Machine surge and anti-lightning strike first protection component 11, the tranformer protection component 12 for being coupled to the output end of the first protection component 11, use
The transformer 13 for being coupled to tranformer protection component 12 in decompression, the rectification circuit 14 for being coupled to the secondary coil of transformer 13,
And it is coupled to the mu balanced circuit 15 of rectification circuit 14；When in the civil power that the circuit is connected to higher than setting voltage by staff
When, tranformer protection component 12 makes transformer 13 be stopped, and reaches the effect of protection transformer 13.Wherein, tranformer protection
Component 12 include be coupled to the output end of the first protection component 11 be used for generate stable reference voltage reference voltage generating circuit,
It is coupled to being used to generate the bleeder circuit of the sampled signal compared with reference voltage, being coupled to for the output end of the first protection component 11
Reference voltage generating circuit and bleeder circuit are believed be used for benchmark voltage and the sampling for receiving reference voltage and sampled signal
Number size simultaneously exports the comparison circuit of a comparison signal and is coupled to comparison circuit output end to receive comparison signal and export
Control signal is to control the on-off circuit that transformer 13 works, when reference voltage is less than sampled signal, comparison circuit output end
The comparison signal controlling switch circuit of output is worked with stopping transformer 13.
First protection component 11 includes fuse F1, piezo-resistance RU and the thermistor NTC being sequentially connected in series, and fuse
The F1 other end is coupled to the live wire of civil power, and the thermistor NTC other end is coupled to the zero line of civil power.Wherein, thermistor
NTC can effectively suppress surge current during start, and after suppression surge current effect is completed, due to passing through its electric current
Continuous action, thermistor NTC resistance value would fall to very small degree, and the power that it is consumed can be ignored,
Normal operating current will not be impacted；And high-impedance state is presented in piezo-resistance RU under normal circumstances, it is struck by lightning when meeting with
When, short-circuit condition is presented after exceeding threshold value in piezo-resistance RU, then short-circuit between live wire and zero line, then insures before burn-up
Silk F1, to play a part of protection circuit below, to prevent high pressure from making circuit on fire.
First protection component 11 is coupled to piezo-resistance RU two ends, including connects with fuse F1 and piezo-resistance RU tie points
Diode D1, the negative electrode that electric capacity C2, the anode connect is coupled to the electric capacity C2 other ends are coupled to the electric capacity C2 other ends
Diode D2 and positive pole are coupled to diode D1 negative electrodes and negative pole is coupled to the electrochemical capacitor C3 of diode D2 anodes, power supply
Electric current becomes direct current electricity output after the first protection component 11.
Filtering unit in reference voltage generating circuit receives above-mentioned direct current and considered except interference signal, then by voltage stabilizing group
Stable reference voltage is generated after part.Wherein, filtering unit includes being coupled to the resistance R1 of electrochemical capacitor C3 positive poles, positive pole coupling
In the electrochemical capacitor C4 of the resistance R1 other ends, electrochemical capacitor C4 negative pole is coupled to zero line, and direct current passes through by resistance R1 and electricity
More pure direct current is obtained after the RC filter circuits that solution electric capacity C4 is constituted, the direct current is steady by being obtained after voltage-regulator diode D3
Fixed reference voltage.
Bleeder circuit includes the resistance R2 and resistance R3 of series connection, wherein, the resistance R2 other end is coupled to electrochemical capacitor C3
Positive pole, the resistance R3 other end is coupled to the tie point output sampled signal of zero line, resistance R2 and resistance R3.Comparison circuit 33
Including operational amplifier, the in-phase input end of operational amplifier is coupled to resistance R2 and resistance R3 tie point to receive sampling letter
Number, inverting input is coupled to voltage-regulator diode D3 to receive reference voltage, output end output comparison signal.When sampled signal is big
When reference voltage, the output end of operational amplifier exports the comparison signal of high level.In the present embodiment, operational amplifier is used
LM358。
On-off circuit includes being coupled to the switch element of operational amplifier output terminal and is controlled by being used for for switch element
The executive component for controlling transformer 13 to work.In the present embodiment, switch element uses NPN triode, and executive component is using two-way
Controllable silicon, the base stage of NPN triode is coupled to the output end of operational amplifier to receive comparison signal, emitter stage by resistance R6
Zero line is coupled to, colelctor electrode is coupled to the control pole of bidirectional triode thyristor, and two master control poles of bidirectional triode thyristor are connected to change
Depressor 134 and zero line.When comparison signal is high level, NPN triode conducting, the direct connecting to neutral of control pole of bidirectional triode thyristor
Line, causes bidirectional triode thyristor to end, and transformer 13 is stopped.In another embodiment, switch element uses IGCT, brilliant
The control pole of brake tube is coupled to the output end of operational amplifier, negative electrode and anode be respectively coupled to bidirectional triode thyristor control pole and
Zero line.In another embodiment, switch element uses optocoupler.
Become direct current after the effect of the rectified circuit 14 of electric current exported from transformer 13, wherein, rectification circuit 14 can
Using full bridge rectifier 14 or Half bridge rectifier circuit 14, the dc point of output exports burning voltage after mu balanced circuit 15, its
In, mu balanced circuit 15 uses voltage stabilizing chip.
Reference picture 3, switch selection circuit 2 includes relay 21, the first transistor T1 and second transistor T2, relay 21
Including normally-closed contact and normally opened contact, normally-closed contact is coupled to the first power supply 10, and normally opened contact is coupled to delay circuit 3；Relay
Coil one end of device 21 is coupled to stand-by power supply 16；The first transistor T1 colelctor electrode is coupled to the another of the coil of relay 21
End, base stage is coupled to stand-by power supply 16；Second transistor T2 colelctor electrode is coupled to the first transistor T1 base stage, and emitter stage connects
Ground, base stage passes through resistance eutral grounding.Normally-closed contact of the stand-by power supply 16 through diode D3 and relay 21（N/C）Charged.It is standby
When being charged with power supply 16, the first transistor T1 is turned on by diode D4, cause second transistor T2 end, relay 21 because
No current is by the way that without in work, as a result stand-by power supply 16 is constantly in charged state, charging voltage is up to what it set
Voltage adds D3 tube voltage drop.Once the first power supply 10 goes wrong（Such as open circuit）, the first transistor T1 cut-offs, second transistor
T2 is turned on, and relay 21 works, its normally-closed contact（N/C）Disconnect, normally opened contact（N/O）Connect, the charging of stand-by power supply 16 is returned
Road is cut off.Meanwhile, the normally opened contact that delay circuit 3 passes through relay 21（N/O）Work is connected with stand-by power supply 16.
Delay circuit 3 includes the one 555 chip and the 2nd 555 chip being sequentially connected, the low triggering end of the one 555 chip
The normally opened contact of relay 21, and first are coupled to high-triggering end, the low triggering end of the 2nd 555 chip and high-triggering end
The output end of 555 chips is coupled to the reset terminal of the 2nd 555 chip.One 555 chip constitutes Schmidt trigger 31, second
555 chips constitute multivibrator 32, when the first power supply 10 does not work, reset terminal, low triggering end and the height of the one 555 chip
Triggering end receives high level signal, and the one 555 chip is started working, and after a certain time output high level signal to the
The 2nd 555 chip is set to start working in 2 555 chips, so that high level signal is exported, if in the high electricity of the one 555 chip output
First power supply 10 recovers normal before ordinary mail number, then the 2nd 555 chip do not work so as to when warning circuit 4 behind not work
Make.Wherein, above-mentioned certain time is determined by the design parameter of resistance R23 and electric capacity the C12 charging and discharging circuit constituted.
Warning circuit 4 includes being coupled to the amplifying circuit 41 of the 2nd 555 chip output and is coupled to amplifying circuit 41
The loudspeaker of output end.Amplifying circuit 41 uses audio-frequency amplifier, and its input is coupled to the output end of the 2nd 555 chip, when
The output end output high level signal of 2nd 555 chip, i.e. the first power supply 10 power-off exceeded after certain time, and warning circuit 4 is opened
Beginning work is to remind the timely handling failure of staff.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of elevator power failure warning circuit, it is characterised in that including:
Power circuit (1), including the first power supply (10) for being electrically connected with city and it is coupled to the standby of first power supply (10)
Power supply (16)；
Switch selection circuit (2), is coupled to first power supply (10) and stand-by power supply (16), for selecting the first power supply of connection
(10) or connection stand-by power supply (16)；
Delay circuit (3), is coupled to the switch selection circuit (2), when the switch selection circuit (2) connects the standby electricity
During source (16), time delayed signal is exported；
Warning circuit (4), is coupled to the delay circuit (3) to receive the time delayed signal, for reminding staff's elevator
Power failure needs on-call maintenance.
2. elevator power failure warning circuit according to claim 1, it is characterised in that the switch selection circuit (2) includes：
Relay (21), including normally-closed contact and normally opened contact, the normally-closed contact are coupled to first power supply (10), normally opened
Contact is coupled to the delay circuit (3)；Coil one end of the relay (21) is coupled to the stand-by power supply (16)；
The first transistor, its colelctor electrode is coupled to the other end of the relay (21) coil, and base stage is coupled to the standby electricity
Source (16)；
Second transistor, its colelctor electrode is coupled to the base stage of the first transistor, and grounded emitter, base stage is connect by resistance
Ground.
3. elevator power failure warning circuit according to claim 2, it is characterised in that the delay circuit (3) is included successively
The one 555 chip and the 2nd 555 chip of connection, the low triggering end and high-triggering end, the 2nd 555 core of the one 555 chip
The low triggering end and high-triggering end of piece are coupled to the normally opened contact of the relay (21), and the one 555 chip is defeated
Go out the reset terminal that end is coupled to the 2nd 555 chip.
4. elevator power failure warning circuit according to claim 3, it is characterised in that the warning circuit (4) includes coupling
In the 2nd 555 chip output amplifying circuit (41) and be coupled to raising one's voice for the amplifying circuit (41) output end
Device.
5. elevator power failure warning circuit according to claim 4, it is characterised in that the amplifying circuit (41) includes audio
Amplifier, the 2nd 555 chip output is coupled to the input of the audio-frequency amplifier.
6. elevator power failure warning circuit according to claim 1, it is characterised in that first power supply (10) includes being used for
Protect the first protection component (11) of circuit below, be coupled to the tranformer protection component of the first protection component (11)
(12) transformer (13) for being coupled to the tranformer protection component (12), for decompression, it is coupled to the transformer (13)
The rectification circuit (14) of secondary coil and the mu balanced circuit (15) for being coupled to the rectification circuit (14)；
City is electrically accessed after first power supply (10), sequentially passes through the first protection component (11) and the tranformer protection group
Part (12), then after being depressured by transformer (13), alternating current is changed into by direct current by rectification circuit (14), the direct current
Stable voltage is exported after mu balanced circuit (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053591.8U CN206457131U (en) | 2017-01-18 | 2017-01-18 | Elevator power failure warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053591.8U CN206457131U (en) | 2017-01-18 | 2017-01-18 | Elevator power failure warning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206457131U true CN206457131U (en) | 2017-09-01 |
Family
ID=59695698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720053591.8U Expired - Fee Related CN206457131U (en) | 2017-01-18 | 2017-01-18 | Elevator power failure warning circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206457131U (en) |
-
2017
- 2017-01-18 CN CN201720053591.8U patent/CN206457131U/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: 20170901 Termination date: 20200118 |