CN107522054A - A kind of intelligent elevator safety detection control system - Google Patents
A kind of intelligent elevator safety detection control system Download PDFInfo
- Publication number
- CN107522054A CN107522054A CN201710747116.5A CN201710747116A CN107522054A CN 107522054 A CN107522054 A CN 107522054A CN 201710747116 A CN201710747116 A CN 201710747116A CN 107522054 A CN107522054 A CN 107522054A
- Authority
- CN
- China
- Prior art keywords
- module
- elevator
- resistance
- control system
- detection control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
- B66B5/024—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system where the abnormal operating condition is caused by an accident, e.g. fire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a kind of intelligent elevator safety detection control system,Detection module is pressed from both sides including anti-door,Accidental falling detection module,Image capture module,Voice module,Power module,Master controller,Automatic alarm,Display screen,Initiative alarming module,Driver module and communication transmission module,Elevator faults warning system of the present invention is used as detection elevator speed by velocity sensor and pressure sensor respectively and elevator door bears the device of pressure,Once the two indexs exceed setting value,It will send and alarm to elevator monitoring center at once,Urgent braking system can also be started,Effectively prevent the generation of elevator accident,And it is also provided with voice module,Initiative alarming can be carried out and realize speech exchange with Surveillance center,And also there is the function of display elevator operation,Use uninterrupted power source simultaneously,Effectively prevent from influenceing the normal work of system because of power failure,Therefore with easy to use,It is vdiverse in function,The advantages of degree of intelligence is high.
Description
Technical field
The present invention relates to elevator technology field, specifically a kind of intelligent elevator safety detection control system.
Background technology
With the continuous development of modern city, low-rise building is gradually eliminated, and the city of modernization is constantly towards higher
Direction develop, elevator is a most important part inside skyscraper, and elevator is a kind of vertical liter using motor as power
Drop machine, equipped with box-like gondola, multiply people or carrying goods for tier building, great convenience is provided to people, but in recent years
Elevator accident often occurs, be exactly that used during elevator falling and elevator door crush human body, to find out its cause, this kind of accident at its most important 2 points
It is not to occur suddenly, has elevator speed unstable and the insensitive sign of elevator door inductor before general generation, such as
Phenomena such as " section time all standing, elevator door once in a while failure ".Can be greatly if it can in advance predict and carry out Measuring error
Reduce the generation of elevator accident.
The content of the invention
It is an object of the invention to provide a kind of intelligent elevator safety detection control system, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical scheme:
A kind of intelligent elevator safety detection control system, including anti-door folder detection module, accidental falling detection module, image
Acquisition module, voice module, power module, master controller, automatic alarm, display screen, initiative alarming module, driver module and
Communication transmission module, the anti-door press from both sides pressure information when detection module gathers elevator door closing and are transferred to master controller, anticipate
The speed of service information of outer fall detection module collection elevator is simultaneously transferred to master controller, and master controller also passes through interface thereon
Voice module, power module, automatic alarm, display screen, initiative alarming module, driver module and communication transfer mould are connected respectively
Block, the driver module are also respectively connected with brake hard mould and seen and elevator door controller mould module.
As the further scheme of the present invention:The power module includes transformer W, rectifier bridge T, resistance R1 and potentiometer
RP1, the winding N1 of the transformer W one end connection 220V line voltages, transformer W winding N1 other end connection 220V
The other end of alternating current, transformer W winding N2 both ends connect rectifier bridge T port 1 and rectifier bridge T port 3 respectively, whole
The port 2 for flowing bridge T connects electric capacity C1, resistance R5 and diode D1 anode, resistance R5 other end connection relay K, two poles
Pipe D1 negative electrode connection relay K contact K-1, resistance R1 and metal-oxide-semiconductor Q1 drain electrode, the relay K contact K-1 other end
Connect battery E positive pole, electric capacity C1 other end connection resistance R2, electric capacity C3, the relay K other end, battery E it is negative
Pole, rectifier bridge T port 4, triode V1 emitter stage, the pin 2 of triode V2 colelctor electrode and chip IC 1, resistance R1's
Other end connection resistance R3, a potentiometer RP1 fixing end, potentiometer RP1 sliding end, triode V2 emitter stage and
Metal-oxide-semiconductor Q1 grid, potentiometer RP1 another fixing end connection resistance R2 other end and triode V1 base stage, three poles
Pipe V1 colelctor electrode connection resistance R4, resistance the R4 other end connection resistance R3 other end and triode V2 base stage, metal-oxide-semiconductor
The Q1 source electrode connection electric capacity C3 other end and the pin 1 of chip IC 1, the pin 3 of chip IC 1 exports DC voltage U1, described
The model LM7812 of chip IC 1.
As further scheme of the invention:Described image acquisition module uses pinhole cameras.
As further scheme of the invention:The core component of the master controller is AT89C51 single-chip microcomputers.
As further scheme of the invention:The brake hard module is elevator emergency braking system.
As further scheme of the invention:The anti-door folder detection module uses pressure sensor, pressure sensor
It is arranged on elevator door.
As further scheme of the invention:The velocity measuring module uses velocity sensor.
As further scheme of the invention:The communication transmission module includes wire transmission and is wirelessly transferred two
Point, wherein wire transmission is realized based on power carrier communication, is wirelessly transferred and is realized using GPRS chips.
Compared with prior art, the beneficial effects of the invention are as follows:Elevator faults warning system of the present invention passes through speed respectively
Sensor and pressure sensor bear the device of pressure as detection elevator speed and elevator door, once the two indexs surpass
Go out setting value, will send and alarm to elevator monitoring center at once, can also start urgent braking system, effectively prevent elevator accident
Generation, and be also provided with voice module, initiative alarming can be carried out and realize speech exchange with Surveillance center, and also
Function with display elevator operation, while uninterrupted power source is used, effectively prevent from influenceing the normal of system because of power failure
Work, therefore there is the advantages of easy to use, vdiverse in function, degree of intelligence is high.
Brief description of the drawings
Fig. 1 is the overall block diagram of the present invention.
Fig. 2 is the circuit diagram of power module.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1-2, in the embodiment of the present invention, a kind of intelligent elevator safety detection control system, including the folder inspection of anti-door
Survey module, accidental falling detection module, image capture module, voice module, power module, master controller, automatic alarm, display
Screen, initiative alarming module, driver module and communication transmission module, during the anti-door folder detection module collection elevator door closing
Pressure information is simultaneously transferred to master controller, and the speed of service information of accidental falling detection module collection elevator is simultaneously transferred to main control
Device, master controller also connect voice module, power module, automatic alarm, display screen, initiative alarming respectively by interface thereon
Module, driver module and communication transmission module, the driver module are also respectively connected with brake hard mould and seen and elevator door control
Device mould module processed.
As the further scheme of the present invention:The power module includes transformer W, rectifier bridge T, resistance R1 and potentiometer
RP1, the winding N1 of the transformer W one end connection 220V line voltages, transformer W winding N1 other end connection 220V
The other end of alternating current, transformer W winding N2 both ends connect rectifier bridge T port 1 and rectifier bridge T port 3 respectively, whole
The port 2 for flowing bridge T connects electric capacity C1, resistance R5 and diode D1 anode, resistance R5 other end connection relay K, two poles
Pipe D1 negative electrode connection relay K contact K-1, resistance R1 and metal-oxide-semiconductor Q1 drain electrode, the relay K contact K-1 other end
Connect battery E positive pole, electric capacity C1 other end connection resistance R2, electric capacity C3, the relay K other end, battery E it is negative
Pole, rectifier bridge T port 4, triode V1 emitter stage, the pin 2 of triode V2 colelctor electrode and chip IC 1, resistance R1's
Other end connection resistance R3, a potentiometer RP1 fixing end, potentiometer RP1 sliding end, triode V2 emitter stage and
Metal-oxide-semiconductor Q1 grid, potentiometer RP1 another fixing end connection resistance R2 other end and triode V1 base stage, three poles
Pipe V1 colelctor electrode connection resistance R4, resistance the R4 other end connection resistance R3 other end and triode V2 base stage, metal-oxide-semiconductor
The Q1 source electrode connection electric capacity C3 other end and the pin 1 of chip IC 1, the pin 3 of chip IC 1 exports DC voltage U1, described
The model LM7812 of chip IC 1.
Image capture module uses pinhole cameras.The core component of master controller is AT89C51 single-chip microcomputers.Brake hard
Module is elevator emergency braking system.Anti- door folder detection module uses pressure sensor, and pressure sensor is arranged on elevator door.
Velocity measuring module uses velocity sensor.Communication transmission module includes wire transmission and is wirelessly transferred two parts, wherein wired
Transmission is realized based on power carrier communication, is wirelessly transferred and is realized using GPRS chips.
The present invention operation principle be:The velocity sensor in accidental falling detection module in system is arranged on elevator rotation
On rotating motor, so as to accurately monitor elevator speed, and by rate signal real-time Transmission to the single-chip microcomputer in master controller
Carry out signal transacting.Pressure sensor in anti-door folder detection module is provided with elevator door, and under normal circumstances, elevator door is being met
To during barrier can appliance for releasing single go back, but when running into failure or its internal pressure sensor and damaging, its may produce compared with
Big pressure, when running into elevator door and bearing pressure and the speed of service occur beyond setting value or elevator and exceed normal range (NR), lead
Control single-chip microcomputer STC89C52 inside CPU and data processing is carried out to signal by its internal coding, decoder, on the one hand by logical
Interrogate transport module and send alarm signal to elevator monitoring center in wired or wireless manner, realize remote alarms, beat simultaneously
Camera is opened, facilitates monitoring personnel to check elevator information, and brake hard module and elevator door are opened by driver module
Controller, prevent the further generation of elevator accident.Personnel in elevator can also pass through the active of initiative alarming module and center
Contacted, voice module can complete elevator member and Surveillance center's interactions among persons, and electricity can be recorded on display screen
Floor that ladder is currently stopped, the speed of service of elevator, the information such as loading capacity of elevator, the intelligence degree of existing elevator is improved,
The power module that the system uses is as described in Figure 2:220V alternating currents pass through step-down transformer W, rectifier bridge T, electric capacity C1 and electric capacity
After C2 filtering, to the voltage of circuit with stable, circuit normal work is out-of-date, and relay K is powered, and its contact K-1 disconnects, through whole
Flow the grid that filtered DC voltage is supplied to metal-oxide-semiconductor Q1 by R1, turn on metal-oxide-semiconductor, when Q1 is turned on voltage by RP1,
Turn on V1, then V2 is also switched on, and at this moment V1, V2 emitter and collector voltage no longer change that (it is acted on completely and voltage stabilizing
Pipe is the same).RP1 is adjusted, can obtain stable output voltage, R1, RP1 and R3 ratio determine to be added in the magnitude of voltage of system, regulation
It is convenient, the driving voltage of system is disclosure satisfy that, when running into civil power power-off, relay K dead electricity, its contact K-1 adhesives, by battery
E powers to circuit, it is ensured that the normal operation of system.
Elevator faults warning system of the present invention is used as detection elevator operation by velocity sensor and pressure sensor respectively
Speed and elevator door bear the device of pressure, once the two indexs exceed setting value, will be sent out at once to elevator monitoring center
Deliver newspaper police, can also start urgent braking system, effectively prevent the generation of elevator accident, and is also provided with voice module, can
Automatic speech prompting, prevent that people are panic, and also there is the function of smoke warning and fire alarm, while use uninterrupted electricity
Source, effectively prevents from influenceing the normal work of system because of power failure, thus with it is easy to use, vdiverse in function, degree of intelligence is high
Advantage.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (8)
1. a kind of intelligent elevator safety detection control system, including anti-door folder detection module, accidental falling detection module, image are adopted
Collect module, voice module, power module, master controller, automatic alarm, display screen, initiative alarming module, driver module and lead to
Interrogate transport module, it is characterised in that the anti-door presss from both sides pressure information when detection module gathers elevator door closing and is transferred to master
Controller, the speed of service information of accidental falling detection module collection elevator are simultaneously transferred to master controller, and master controller also passes through
Interface thereon connect respectively voice module, power module, automatic alarm, display screen, initiative alarming module, driver module and
Communication transmission module, the driver module are also respectively connected with brake hard mould and seen and elevator door controller mould module.
A kind of 2. intelligent elevator safety detection control system according to claim 1, it is characterised in that the power module
One end connection 220V civil power electricity including transformer W, rectifier bridge T, resistance R1 and potentiometer RP1, the winding N1 of the transformer W
Pressure, the other end of transformer W winding N1 other end connection 220V alternating currents, transformer W winding N2 both ends connect respectively
Rectifier bridge T port 1 and rectifier bridge T port 3 are connect, rectifier bridge T port 2 connects electric capacity C1, resistance R5 and diode D1
Anode, resistance the R5 other end connection relay K, diode D1 negative electrode connection relay K contact K-1, resistance R1 and MOS
Pipe Q1 drain electrode, relay K contact K-1 other end connection battery E positive pole, electric capacity C1 other end connection resistance
R2, electric capacity C3, the relay K other end, battery E negative pole, rectifier bridge T port 4, triode V1 emitter stage, three poles
Pipe V2 colelctor electrode and the pin 2 of chip IC 1, resistance R1 other end connection resistance R3, a potentiometer RP1 fixing end,
The grid of potentiometer RP1 sliding end, triode V2 emitter stage and metal-oxide-semiconductor Q1, potentiometer RP1 another fixing end connection
The resistance R2 other end and triode V1 base stage, triode V1 colelctor electrode connection resistance R4, resistance R4 other end connection
The resistance R3 other end and triode V2 base stage, metal-oxide-semiconductor Q1 the source electrode connection electric capacity C3 other end and the pin of chip IC 1
1, the pin 3 of chip IC 1 exports DC voltage U1, the model LM7812 of the chip IC 1.
3. a kind of intelligent elevator safety detection control system according to claim 1, it is characterised in that described image gathers
Module uses pinhole cameras.
A kind of 4. intelligent elevator safety detection control system according to claim 1, it is characterised in that the master controller
Core component be AT89C51 single-chip microcomputers.
A kind of 5. intelligent elevator safety detection control system according to claim 1, it is characterised in that the brake hard
Module is elevator emergency braking system.
A kind of 6. intelligent elevator safety detection control system according to claim 1, it is characterised in that the anti-door folder inspection
Survey module and use pressure sensor, pressure sensor is arranged on elevator door.
A kind of 7. intelligent elevator safety detection control system according to claim 1, it is characterised in that the velocity measuring
Module uses velocity sensor.
A kind of 8. intelligent elevator safety detection control system according to claim 1, it is characterised in that the communication transfer
Module includes wire transmission and is wirelessly transferred two parts, and wherein wire transmission is realized based on power carrier communication, wireless to pass
It is defeated to be realized using GPRS chips.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710747116.5A CN107522054A (en) | 2017-08-11 | 2017-08-11 | A kind of intelligent elevator safety detection control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710747116.5A CN107522054A (en) | 2017-08-11 | 2017-08-11 | A kind of intelligent elevator safety detection control system |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107522054A true CN107522054A (en) | 2017-12-29 |
Family
ID=60682305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710747116.5A Pending CN107522054A (en) | 2017-08-11 | 2017-08-11 | A kind of intelligent elevator safety detection control system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107522054A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109052080A (en) * | 2018-09-14 | 2018-12-21 | 钟祥博谦信息科技有限公司 | A kind of elevator control system and method |
CN110589649A (en) * | 2019-09-04 | 2019-12-20 | 杭州吉时语科技有限公司 | Intelligent emergency system of elevator |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009155069A (en) * | 2007-12-27 | 2009-07-16 | Mitsubishi Electric Corp | Elevator door control device |
CN202575614U (en) * | 2012-03-30 | 2012-12-05 | 上海市金山区青少年活动中心 | Automatic fault alarm system for elevator |
CN104340825A (en) * | 2014-10-13 | 2015-02-11 | 华建龙 | Visual mechanical safety device for preventing elevator from clamping people up, down, left and right |
CN104828682A (en) * | 2015-05-08 | 2015-08-12 | 吴江骏达电梯部件有限公司 | Elevator provided with multiple safety devices |
CN205170098U (en) * | 2015-12-11 | 2016-04-20 | 程旗 | Elevator fault alarm system |
CN106770997A (en) * | 2016-12-05 | 2017-05-31 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of food inspection cloud system |
CN106934898A (en) * | 2017-03-23 | 2017-07-07 | 合肥智慧殿投资管理有限公司 | A kind of prison intelligent entrance guard safety-protection system |
-
2017
- 2017-08-11 CN CN201710747116.5A patent/CN107522054A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009155069A (en) * | 2007-12-27 | 2009-07-16 | Mitsubishi Electric Corp | Elevator door control device |
CN202575614U (en) * | 2012-03-30 | 2012-12-05 | 上海市金山区青少年活动中心 | Automatic fault alarm system for elevator |
CN104340825A (en) * | 2014-10-13 | 2015-02-11 | 华建龙 | Visual mechanical safety device for preventing elevator from clamping people up, down, left and right |
CN104828682A (en) * | 2015-05-08 | 2015-08-12 | 吴江骏达电梯部件有限公司 | Elevator provided with multiple safety devices |
CN205170098U (en) * | 2015-12-11 | 2016-04-20 | 程旗 | Elevator fault alarm system |
CN106770997A (en) * | 2016-12-05 | 2017-05-31 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of food inspection cloud system |
CN106934898A (en) * | 2017-03-23 | 2017-07-07 | 合肥智慧殿投资管理有限公司 | A kind of prison intelligent entrance guard safety-protection system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109052080A (en) * | 2018-09-14 | 2018-12-21 | 钟祥博谦信息科技有限公司 | A kind of elevator control system and method |
CN110589649A (en) * | 2019-09-04 | 2019-12-20 | 杭州吉时语科技有限公司 | Intelligent emergency system of elevator |
CN110589649B (en) * | 2019-09-04 | 2024-04-16 | 杭州吉时语科技有限公司 | Intelligent emergency system of elevator |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205170098U (en) | Elevator fault alarm system | |
CN202594553U (en) | Elevator long-range automatic alarm and multimedia advertisement integration machine system | |
CN207731442U (en) | A kind of distributed intelligence electric fire monitoring system | |
CN107522054A (en) | A kind of intelligent elevator safety detection control system | |
CN206767346U (en) | A kind of high definition visual type elevator internet-of-things terminal | |
CN206336868U (en) | Agreement docking style single elevator front-end data acquisition device | |
CN104355218B (en) | A kind of Internet of Things monitoring system of escalator | |
CN207258944U (en) | A kind of failure self-diagnosis device with elevator control-reminding | |
CN207226707U (en) | A kind of door-opened elevator accidental movement protects system | |
CN206814171U (en) | A kind of elevator emergency rescue device | |
CN108069326A (en) | A kind of elevator door safety control system | |
CN106163055A (en) | A kind of emergency lighting controller able circuit | |
CN106389030B (en) | A kind of internet intelligent electric wheelchair control system | |
CN212269131U (en) | Elevator outage fault monitoring system | |
CN205320152U (en) | Self -checking camera | |
CN206798877U (en) | A kind of special integral control system of elevator | |
CN206946230U (en) | Data signal acquisition terminal | |
CN206283448U (en) | A kind of power supply energy-storage system for security protection building | |
CN209217791U (en) | A kind of novel elevator emergency power supply detection control circuit | |
CN205484517U (en) | Grid voltage current monitoring system | |
CN210574326U (en) | Parking area safety monitoring device | |
CN205068700U (en) | Transmission line overhauls protection against electric shock early warning system | |
CN207304593U (en) | A kind of family endowment with sound feedback and reserve battery looks after safely gateway apparatus | |
CN209535094U (en) | A kind of outstanding wheel monitoring device of rescue | |
CN203545372U (en) | Automatic levelling device for lift |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171229 |