CN103253572A - Method and device for detecting elevator power failure emergency power source in automatic timing mode - Google Patents
Method and device for detecting elevator power failure emergency power source in automatic timing mode Download PDFInfo
- Publication number
- CN103253572A CN103253572A CN2013101740070A CN201310174007A CN103253572A CN 103253572 A CN103253572 A CN 103253572A CN 2013101740070 A CN2013101740070 A CN 2013101740070A CN 201310174007 A CN201310174007 A CN 201310174007A CN 103253572 A CN103253572 A CN 103253572A
- Authority
- CN
- China
- Prior art keywords
- elevator
- power failure
- failure emergency
- emergency source
- electrical power
- 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.)
- Granted
Links
Images
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to a method and device for detecting an elevator power failure emergency power source in an automatic timing mode. Particularly, the method and device is used for detecting output voltage of the elevator power failure emergency power source by changing-over of input and output of the elevator power failure emergency power source in a timing mode. The method comprises the steps of (1) automatically detecting whether power supply of an elevator is normal or not; (2) if a judging result of the step (1) is that the power supply of the elevator is normal, cutting off the input of the elevator power failure emergency power source, changing over to the output of the elevator power failure emergency power source, and if the judging result is that the power supply of the elevator is not normal, outputting alarm; (3) detecting whether an output voltage value of the elevator power failure emergency power source is normal or not; (4) if a judging result of the step (3) is that the output voltage value of the elevator power failure emergency power source is normal, returning to the step (2), and if the judging result is that the output voltage value of the elevator power failure emergency power source is not normal, outputting alarm. Due to simulation of power failure of the elevator power failure emergency power source, automatic timing detection of the elevator power failure emergency power source is achieved, potential safety hazards of the elevator power failure emergency power source can be effectively eliminated, and safe operation of the elevator is ensured all the time. The method and device for detecting the elevator power failure emergency power source in the automatic timing mode is convenient to install, low in cost and strong in feasibility.
Description
Technical field
The present invention relates to self-timing method of inspection and the device of elevator power failure emergency source of electrical power, input and the output by regularly switching elevator power failure emergency source of electrical power detects its output voltage specifically.
Background technology
Along with being on the increase of skyscraper, requirement to elevator is also improving, the elevator that need install rescue apparatus during stoppage of power supply (UPS) additional also is being on the increase, during in order to building power failure or elevator faults, can be in conjunction with automatically switch UPS power supply of apparatus for controlling elevator, thereby with the elevator slow running to nearby floor, open the door emit be stranded in the elevator personnel, avoid personnel to be trapped in the elevator and (wait repair and maintenance to want more than one hour usually) to alleviate client's strong reflection for a long time.Play the effect of instant rescue.
Elevator emergency power failure deliverance apparatus, majority in usefulness is and the same with the UPS of computer on the market product at present, input AC220V, output also is AC220V, under the situation of power supply input dead electricity, UPS just exports AC220V, power can with the power match of elevator traction machine, see Appendix 1, we tentatively are called this commercially available UPS universal elevator power failure emergency plan
At present, no matter give elevator supply with general still special-purpose UPS power failure emergency flat layer device, all have following shortcoming:
1, several Nian Houhui of the storage battery of UPS are aging gradually, but conventional device can't judge whether it is aging.
2, existing UPS device is placed on hoistway or machine room, just exports buzzer warning, and this type of alarm can't be realized remote alarms.
If 3 UPS installation at the scene itself is no problem, if battery wears out gradually after several years and can not use, though UPS sends buzzing and reports to the police, but because this UPS is loaded in well arrives, small and weak buzzer can't play the warning effect, the consequence of bringing is: in case the elevator supply system cut-off, rescue apparatus during stoppage of power supply can not work, and elevator is out of service.If the rescue group can not arrive in the very nick of time, personnel even (especially old man etc.) have uncomfortablely in the elevator cage, and the personnel that may cause injure, and make troubles and dispute perhaps for estate management side, building.
If 4 UPS are in installation process, because workmen's carelessness, though UPS is not in place or is in place, but ups power does not connect, or the switch of UPS self do not open work, will cause UPS to be in uncharged state for a long time yet, and battery pack is inevitable also for a long time can not floating charge and damage, UPS can not use and elevator device can't be known, and can not rescue when real elevator has electricity.
Even 5, UPS all connects, but the output existing problems of reporting to the police.Can't be with the unusual timely building attendant there that is delivered to of equipment.
Therefore, need a kind of self-timing method of inspection of elevator power failure emergency source of electrical power especially, to address the above problem.
Summary of the invention
To the objective of the invention is to detect the problem that elevator power failure emergency source of electrical power exists in order solving, a kind of self-timing method of inspection and device of elevator power failure emergency source of electrical power to be provided.Judging constantly whether elevator emergency device is available, and output alarm signal gives elevator control gear, is in good working order to guarantee elevator power failure emergency source of electrical power.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of self-timing method of inspection to elevator power failure emergency source of electrical power comprises the steps:
Whether (1) detect the power supply of elevator automatically normal;
(2) if the judged result of step (1) for being, is cut off the input of elevator power failure emergency source of electrical power, do not cut off the supply regular power power supply of elevator operation, switch the output of elevator power failure emergency source of electrical power, if judged result is for denying output alarm;
(3) whether the output voltage values of detection elevator power failure emergency source of electrical power is normal;
(4) if the judged result of step (3) for being, is returned step (2), if judged result is for denying output alarm.
Whether the power supply that continues the detection elevator is normal, if normal, the self-timing of proceeding elevator power failure emergency source of electrical power detects, if mal, be the power cut-off that external power grid is supplied with elevator, the input and the output that recover elevator power failure emergency source of electrical power, elevator power failure emergency source of electrical power normal operation.
After described detection was finished, release elevator power failure emergency source of electrical power electric energy at regular time and quantity was to prolong its service life.
Automatic checkout equipment detect the power supply of elevator normal after, finish timing by setting-up time, by the time behind the setting-up time, automatic checkout equipment only cuts off the I/O of elevator power failure emergency source of electrical power, the situation during the simulant elevator outage and do not influence the normal use of elevator.
When elevator power failure emergency source of electrical power is detected, export the signal that elevator power failure emergency source of electrical power is being detected to elevator control center.
Described output alarm comprises to elevator monitoring chamber output alarm, by internet or the long-range output alarm of wireless network.
The present invention also provides a kind of self-timing detecting device of elevator power failure emergency source of electrical power, it is characterized in that, comprising:
Handover module: the input and the output that are used for switching elevator power failure emergency source of electrical power; Alarm output module: be used for output alarm signal or/and detection signal;
The energy module of releasing: the energy that is used for the power down ladder power failure emergency source of electrical power of releasing at regular time and quantity;
UPS I/O detection module: the output voltage when cutting off the power supply for detection of the input of the civil power of elevator power failure emergency source of electrical power and elevator power failure emergency source of electrical power;
Control module: be used for the module operation of releasing of control handover module, UPS I/O detection module, alarm output module, energy, the testing result of detection module is carried out logic judge, send instruction according to judged result and give handover module, handover module or the energy module of releasing.
Described detecting device also comprises timing module, is used for realizing that the timing to elevator power failure emergency source of electrical power detects.
The described energy module of releasing comprises energy bleeder resistance, energy bleed off relay or contactless switch or power model.
Being provided with communication between described alarm output module and local panalarm and the remote alarms terminal is connected.
The present invention is by elevator power failure emergency source of electrical power (UPS) being simulated power failure (elevator running is also in operation), and after elevator power failure emergency source of electrical power (UPS) outage, can give elevator (but cutting off it to the output of the elevator power supply of normal operation this moment) by automatic out-put supply, by the detection to output voltage, the self-timing of finishing elevator power failure emergency source of electrical power (UPS) detects, can effectively get rid of the potential potential safety hazard of elevator power failure emergency source of electrical power, guarantee its safe operation constantly.The present invention is easy for installation, and cost is low, and feasibility is strong, can be widely used in the detection of the power failure emergency source of electrical power of every field.
Description of drawings
Fig. 1 is diagram of circuit of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is schematic diagram of the present invention.
The specific embodiment
Further understand and understanding for making architectural feature of the present invention and the effect reached had, cooperate detailed explanation in order to preferred embodiment and accompanying drawing.
Embodiment 1
Referring to Fig. 1, as shown in the figure, a kind of self-timing method of inspection of elevator power failure emergency source of electrical power comprises the steps:
Whether (1) detect the power supply of elevator automatically normal;
The electric power system of elevator provides three-phase four-wire system or three-phase five-wire mode civil power.
If electric power system has electricity, elevator normally moves, and elevator power failure emergency source of electrical power is not worked; The automatic checkout equipment of elevator power failure emergency source of electrical power is in and detects timing or automatic detected state.
If electric power system does not have electricity, elevator has a power failure, and elevator power failure emergency source of electrical power UPS enters mode of operation.
(2) if the judged result of step (1) for being, is cut off the input of elevator power failure emergency source of electrical power, switch the output of elevator power failure emergency source of electrical power, if judged result is not, output alarm;
Situation when its objective is the simulant elevator outage, at this moment elevator power failure emergency source of electrical power (UPS) can automatic out-put supply (circuit that this moment, UPS outputed to elevator supply cuts off when also simulateding outage simultaneously), automatic checkout equipment (ZDS) enters trace routine, detect the voltage of UPS mouth, see Fig. 3.
Wherein, normal in the power supply of guaranteeing elevator, when elevator power failure emergency source of electrical power (UPS) is off position, detecting device is judged by internal logic, under situation about arriving the detection time of device inner setting, just can cut off the input of elevator power failure emergency source of electrical power, the automatic out-put supply of UPS, for this out-put supply is detected, device has also cut off (guarantee the normal operation of elevator) of elevator power failure emergency source of electrical power (UPS) to elevator supply simultaneously, and it exports whether normal detection to elevator power failure emergency source of electrical power (UPS).
Detect in the process of elevator power failure emergency source of electrical power (UPS) at detecting device, also need to monitor the elevator supply state always, if elevator supply mal, stop immediately detecting elevator power failure emergency source of electrical power (UPS), make UPS self enter the power failure standby mode of operation immediately, be the power supply of elevator rescue flat bed.
Automatic checkout equipment is after the power supply that detects elevator is normal, can carry out timing according to preestablishing the timing assay intervals time, time is up repeats top detection to UPS automatically, enters the next round timing again after finishing, and detects with the timing of realization to elevator power failure emergency source of electrical power (UPS) self.Make it be in good work readiness for action forever.(pitch time can be 2 hours, 2 days, or 2 months, decide according to reality)
When elevator normally moves, after described automatic checkout equipment (on the backstage) cuts off the input of elevator power failure emergency source of electrical power (UPS), the judgement of elevator power failure emergency source of electrical power (UPS) internal processes can think that the elevator supply mal is (actual just to UPS simulation outage, the power supply of elevator does not cut off the power supply), UPS enters mode of operation automatically, the output power supply, the mouth of elevator power failure this moment emergency source of electrical power has been switched to the testing program to elevator power failure emergency source of electrical power (UPS) from elevator control cabinet.Can not influence the normal use of elevator.
The output alarm function of described automatic checkout equipment comprises to elevator monitoring chamber output alarm, far module by internet or the long-range output alarm of wireless network.
(3) whether the output voltage of detection elevator power failure emergency source of electrical power (UPS) is normal;
Detect the output voltage of elevator power failure emergency source of electrical power within the specific limits, namely think normal, for example, output voltage range is AC180-230V, if detect its voltage less than certain value, for example, output voltage is less than 180V, then think battery behavior weaken already or damage, should can also decide according to the battery behavior of each producer or the data that provide by (UPS) output voltage values.
(4) if the judged result of step (3) for being, is recovered the input and output of power failure emergency source of electrical power, return step (2), if judged result is for denying output alarm.
Wherein, can preestablish the normal range of UPS output voltage values, judge by testing result and the comparison of above-mentioned scope.If judged result is mal, output alarm.Warning comprises to the building Control Room reports to the police, and by internet or long-range output alarm such as wireless network or mobile communication, can also export the signal that elevator power failure emergency source of electrical power is being detected to elevator control center.If judged result is normal, enter the detection of next round.The electric energy of emergency source of electrical power of elevator can also being had a power failure discharges within the specific limits, is of value to the long-time running of battery, prolongs its service life to greatest extent.
After detection is finished, recover normal input and the output of elevator power failure emergency source of electrical power (UPS), elevator power failure emergency source of electrical power be input as civil power, be output as elevator control cabinet, automatic checkout equipment enters a new round and detects time status, after reaching setting-up time, device begins next round elevator power failure emergency source of electrical power (UPS) is detected.
The principle of work of embodiment 1 is: by the simulation outage of timing to elevator power failure emergency source of electrical power (UPS), namely cut off power failure emergency source of electrical power (UPS) input end power supply (power supply of the normal operation of elevator this moment does not cut off), detect the whether normally output of UPS mouth, (circuit that this moment, UPS outputed to elevator supply cuts off when also simulateding outage simultaneously, to avoid the influence to the normal operation of elevator).Normal then recover line status before the simulation outage, detecting device carries out the detection timing of next round, during mal, and output alarm then.
Embodiment 2
As Fig. 2, shown in Figure 3, present embodiment provides a kind of self-timing detecting device 1 of elevator power failure emergency source of electrical power, comprising:
The energy module 13 of releasing, the energy of the elevator power failure emergency source of electrical power that is used for releasing;
UPS I/O detection module 14 is for detection of the civil power input of elevator power failure emergency source of electrical power and the output voltage of elevator power failure emergency source of electrical power;
Described detecting device also comprises clock timing device 16, is used for realizing that the timing to elevator power failure emergency source of electrical power detects.
The described energy module of releasing comprises energy bleeder resistance 131.
Described alarm output module is provided with communication with local panalarm with the remote alarms terminal and is connected.
Use is as follows:
1, the self-timing detecting device of elevator power failure emergency source of electrical power is started working, and detection module detects the civil power input of power failure emergency source of electrical power.
2, control module is carried out the logic judgement to testing result, if the testing result mal sends and instructs to the alarm output module output alarm signal, if testing result is normal, according to the setting-up time timing.
3, finish timing after, handover module cuts off the input of power failure emergency source of electrical power, switches the output of power failure emergency source of electrical power, the power failure emergency source of electrical power is thought the elevator outage, the power failure emergency source of electrical power starts, the output power supply.
4, detection module detects the output voltage of power failure emergency source of electrical power, control module is carried out logic to testing result and is judged, if testing result mal, transmission is instructed to the alarm output module output alarm signal, if testing result is normal, the energy module of releasing discharges the portion of energy of power failure emergency source of electrical power.Wherein, after the output voltage of detection power failure emergency source of electrical power is normal, also can implement energy and discharge.
5, recover the output of power failure emergency source of electrical power, continue according to the setting-up time timing, treat to begin after timing is finished lower whorl and detect.
More than show and described the advantage of groundwork, principal character and the invention of invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and the specification sheets is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (10)
1. the self-timing method of inspection to elevator power failure emergency source of electrical power is characterized in that, comprises the steps:
Whether (1) detect the power supply of elevator automatically normal;
(2) if the judged result of step (1) for being, is cut off the input of elevator power failure emergency source of electrical power, do not cut off the supply regular power power supply of elevator operation, switch the output of elevator power failure emergency source of electrical power, if judged result is for denying output alarm;
(3) whether the output voltage values of detection elevator power failure emergency source of electrical power is normal;
(4) if the judged result of step (3) for being, is returned step (2), if judged result is for denying output alarm.
2. the self-timing method of inspection to elevator power failure emergency source of electrical power according to claim 1, it is characterized in that, whether the power supply that continues the detection elevator is normal, if it is normal, the self-timing of proceeding elevator power failure emergency source of electrical power detects, if mal, namely external power grid is supplied with the power cut-off of elevator, recover input and the output of elevator power failure emergency source of electrical power, elevator power failure emergency source of electrical power normal operation.
3. the self-timing method of inspection to elevator power failure emergency source of electrical power according to claim 1 is characterized in that, after described detection was finished, release elevator power failure emergency source of electrical power electric energy at regular time and quantity was to prolong its service life.
4. the self-timing method of inspection to elevator power failure emergency source of electrical power according to claim 1, it is characterized in that, after automatic checkout equipment detects the power supply normally of elevator, finish timing by setting-up time, by the time behind the setting-up time, automatic checkout equipment only cuts off the I/O of elevator power failure emergency source of electrical power, the situation in simulant elevator when outage and do not influence the normal use of elevator.
5. the self-timing method of inspection to elevator power failure emergency source of electrical power according to claim 1 is characterized in that, when elevator power failure emergency source of electrical power is detected, exports the signal that elevator power failure emergency source of electrical power is being detected to elevator control center.
6. the self-timing method of inspection to elevator power failure emergency source of electrical power according to claim 1 is characterized in that, described output alarm comprises to elevator monitoring chamber output alarm, by internet or the long-range output alarm of wireless network.
7. the self-timing detecting device of an elevator power failure emergency source of electrical power is characterized in that, comprising:
Handover module: the input and the output that are used for switching elevator power failure emergency source of electrical power; Alarm output module: be used for output alarm signal or/and detection signal;
The energy module of releasing: the energy that is used for the power down ladder power failure emergency source of electrical power of releasing at regular time and quantity;
UPS I/O detection module: the output voltage when cutting off the power supply for detection of the input of the civil power of elevator power failure emergency source of electrical power and elevator power failure emergency source of electrical power;
Control module: be used for the module operation of releasing of control handover module, UPS I/O detection module, alarm output module, energy, the testing result of detection module is carried out logic judge, send instruction according to judged result and give handover module or the energy module of releasing.
8. the self-timing detecting device of elevator power failure emergency source of electrical power according to claim 7 is characterized in that, described detecting device also comprises timing module, is used for realizing that the timing to elevator power failure emergency source of electrical power detects.
9. the self-timing detecting device of elevator power failure emergency source of electrical power according to claim 7 is characterized in that, the described energy module of releasing comprises energy bleeder resistance or energy bleed off relay or contactless switch or power model.
10. the self-timing detecting device (ZDS) of elevator power failure emergency source of electrical power according to claim 7 is characterized in that, is provided with communication between described alarm output module and local panalarm and the remote alarms terminal and is connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310174007.0A CN103253572B (en) | 2013-05-13 | 2013-05-13 | Method and device for detecting elevator power failure emergency power source in automatic timing mode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310174007.0A CN103253572B (en) | 2013-05-13 | 2013-05-13 | Method and device for detecting elevator power failure emergency power source in automatic timing mode |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103253572A true CN103253572A (en) | 2013-08-21 |
CN103253572B CN103253572B (en) | 2015-04-29 |
Family
ID=48957858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310174007.0A Active CN103253572B (en) | 2013-05-13 | 2013-05-13 | Method and device for detecting elevator power failure emergency power source in automatic timing mode |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103253572B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105417313A (en) * | 2015-12-28 | 2016-03-23 | 陈勇 | Anti-dropping device for elevator car body |
CN106115406A (en) * | 2016-07-13 | 2016-11-16 | 四川宏喜特种设备科技有限公司 | Elevator safety monitoring method and device |
WO2019019561A1 (en) * | 2017-07-28 | 2019-01-31 | 郑州云海信息技术有限公司 | Detection and maintenance method and device for server power supply system |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07245882A (en) * | 1994-03-02 | 1995-09-19 | Fujitsu Ltd | Battery monitor |
JP2007076758A (en) * | 2005-09-12 | 2007-03-29 | Mitsubishi Electric Corp | Control device of elevator |
CN2930056Y (en) * | 2006-07-20 | 2007-08-01 | 中国人民武装警察部队学院 | Automatic maintenance device for UPS accumulator |
CN201261667Y (en) * | 2008-09-12 | 2009-06-24 | 浙江省特种设备检验研究院 | Monitoring device for elevator standby power |
CN101552487A (en) * | 2008-12-18 | 2009-10-07 | 张坚 | Uninterrupted power supply for battery pack vulcanization prevention and online capacity measurement |
US7880438B1 (en) * | 2006-06-07 | 2011-02-01 | American Power Conversion Corporation | UPS battery replacement |
CN202929179U (en) * | 2012-12-04 | 2013-05-08 | 山大华天(烟台)电子科技有限公司 | Intelligent discharging detection system for storage battery |
CN203269252U (en) * | 2013-05-13 | 2013-11-06 | 黄一宸 | Automatic timed detecting device of elevator blackout emergency power source |
-
2013
- 2013-05-13 CN CN201310174007.0A patent/CN103253572B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07245882A (en) * | 1994-03-02 | 1995-09-19 | Fujitsu Ltd | Battery monitor |
JP2007076758A (en) * | 2005-09-12 | 2007-03-29 | Mitsubishi Electric Corp | Control device of elevator |
US7880438B1 (en) * | 2006-06-07 | 2011-02-01 | American Power Conversion Corporation | UPS battery replacement |
CN2930056Y (en) * | 2006-07-20 | 2007-08-01 | 中国人民武装警察部队学院 | Automatic maintenance device for UPS accumulator |
CN201261667Y (en) * | 2008-09-12 | 2009-06-24 | 浙江省特种设备检验研究院 | Monitoring device for elevator standby power |
CN101552487A (en) * | 2008-12-18 | 2009-10-07 | 张坚 | Uninterrupted power supply for battery pack vulcanization prevention and online capacity measurement |
CN202929179U (en) * | 2012-12-04 | 2013-05-08 | 山大华天(烟台)电子科技有限公司 | Intelligent discharging detection system for storage battery |
CN203269252U (en) * | 2013-05-13 | 2013-11-06 | 黄一宸 | Automatic timed detecting device of elevator blackout emergency power source |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105417313A (en) * | 2015-12-28 | 2016-03-23 | 陈勇 | Anti-dropping device for elevator car body |
CN106115406A (en) * | 2016-07-13 | 2016-11-16 | 四川宏喜特种设备科技有限公司 | Elevator safety monitoring method and device |
WO2019019561A1 (en) * | 2017-07-28 | 2019-01-31 | 郑州云海信息技术有限公司 | Detection and maintenance method and device for server power supply system |
Also Published As
Publication number | Publication date |
---|---|
CN103253572B (en) | 2015-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN203269252U (en) | Automatic timed detecting device of elevator blackout emergency power source | |
CN202625540U (en) | Elevator safety circuit detection system | |
CN106946110A (en) | A kind of elevator malfunction failure monitoring system and method | |
CN106185519B (en) | A kind of building hoist compulsory maintenance maintenance monitoring system and its application with fault detection capability | |
CN204216675U (en) | Based on power distribution cabinet electric leakage monitoring and the guard system of CAN formula | |
CN105381565A (en) | Intelligent inspection system and method for fire water supply system | |
CN102009886A (en) | Method and device for automatically identifying abnormal shutdown failures of elevator | |
CN103227662A (en) | Safety detection method and system of electric power communication equipment based on state control | |
CN103253572B (en) | Method and device for detecting elevator power failure emergency power source in automatic timing mode | |
CN110197566A (en) | Based on the cable passage on-line monitoring of ubiquitous Internet of Things application and linkage disposal plant | |
CN104505949A (en) | Mine power network monitoring and guaranteeing system | |
CN104383653A (en) | Intelligent inspection system for fire pump | |
CN204246722U (en) | A kind of fire pump intelligent inspection system | |
CN206975520U (en) | A kind of middle-placed switch cabinet humid control and monitoring system | |
CN201522537U (en) | Hanging earth wire state checking and reporting device in contact network overhaul operation | |
CN102647013A (en) | Charge control and protection method for storage battery | |
CN204009553U (en) | A kind of fire fighting smoke remover control box supervising device | |
CN201995078U (en) | Monitoring device for hanging and connecting of ground wire for overhauling operation of contact net based on video image | |
CN111026097B (en) | Fault self-diagnosis and early warning method for inspection robot | |
CN204360505U (en) | Wireless fire disaster audible-visual annunciator | |
CN103972925B (en) | The grid-connected proterctive equipment of distributed photovoltaic | |
CN207810975U (en) | Overhauling elevator safety guarantee control device | |
CN204014230U (en) | A kind of road lamp remote monitoring apparatus | |
CN103368149B (en) | Low-voltage distribution system fault monitoring method | |
CN204124971U (en) | A kind of elevator single armed brake detecting device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |