CN109160411B - Detection control method and system for escalator - Google Patents
Detection control method and system for escalator Download PDFInfo
- Publication number
- CN109160411B CN109160411B CN201811224689.0A CN201811224689A CN109160411B CN 109160411 B CN109160411 B CN 109160411B CN 201811224689 A CN201811224689 A CN 201811224689A CN 109160411 B CN109160411 B CN 109160411B
- Authority
- CN
- China
- Prior art keywords
- escalator
- load
- information
- detection
- control system
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
- B66B25/003—Methods or algorithms therefor
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses a detection control method and a detection control system for an escalator, which comprise the following steps: starting and operating the escalator; detecting the current passing through the frequency converter in real time to obtain real-time current information; outputting real-time current information; the main control system acquires the real-time current information, obtains the load ratio of the escalator by calculating the real-time current information, the no-load reference current information and the full-load reference current information, and outputs the load ratio information; the detection device detects the condition of the escalator load, obtains the detection information of the escalator load and outputs the detection information; and the main control system controls the escalator to be switched into a corresponding mode to operate according to the load ratio information and the detection information. The escalator control system can be accurately switched to operate in a corresponding mode, energy consumption is saved, and the safety factor of the escalator is improved.
Description
Technical Field
The invention relates to the technical field of detection of escalators, in particular to a detection control method and system of an escalator.
Background
In the running process of the existing escalator, whether pedestrians enter the escalator or not is judged directly through a photoelectric switch, so that an energy-saving low-speed running mode or a high-energy-consumption full-speed running mode is selected.
The detection device of the traditional escalator is easily interfered by external signals, so that the escalator frequently and mistakenly enters a full-speed running mode, and the energy consumption of the escalator is increased; when detection device trouble, do not have the emergence that the device can detect its trouble in advance, when the pedestrian gets into, can not effectual entering full speed mode, when the pedestrian of staircase is more, the detection device of trouble can't detect the pedestrian that gets into escalator, leads to the staircase to transship easily, reverses trouble such as, has greatly reduced escalator's degree of safety coefficient, increases the maintenance and repair expense of staircase equipment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a detection control method and a detection control system for an escalator.
The technical scheme is as follows:
the detection control method of the escalator comprises the following steps:
starting and operating the escalator;
detecting the current passing through the frequency converter in real time to obtain real-time current information;
outputting real-time current information;
the main control system acquires the real-time current information, obtains the load ratio of the escalator by calculating the real-time current information, the no-load reference current information and the full-load reference current information, and outputs the load ratio information;
the detection device detects the condition of the escalator load, obtains the detection information of the escalator load and outputs the detection information;
and the main control system controls the escalator to be switched into a corresponding mode to operate according to the load ratio information and the detection information.
The detection device detects the passing condition of the pedestrian, and when the detection device detects that the pedestrian enters the pedal, the detection device acquires the detection information of the escalator in the loading process.
The detection control method of the escalator further comprises the following steps:
before the escalator is started to run, no-load reference current information and full-load reference current information are preset, and the preset no-load reference current information and the preset full-load reference current information are stored in a storage unit.
The detection control method of the escalator further comprises the following steps:
when the main control system obtains the real-time current information, the main control system also calls the no-load reference current information and the full-load reference current information from the storage unit.
The operation mode of the escalator at least comprises a first operation mode, a second operation mode and a fault mode; the operating speed of the first operating mode is slower than the operating speed of the second operating mode; when the escalator is in a failure mode, the escalator stops running and enters a maintenance and overhaul state.
The detection control method of the escalator further comprises the following steps:
when the output load ratio information is smaller than a preset threshold value, the main control system controls the escalator to carry out a first operation mode; and when the output load ratio information is larger than a preset threshold value, the main control system controls the escalator to be switched to a corresponding fault mode or a second operation mode for operation.
The detection control method of the escalator further comprises the following steps:
when the output load ratio information is larger than a preset threshold value, if the detection device detects that a pedestrian enters the pedal, the detection information collected by the detection device displays that the escalator is a load, and the main control system controls the escalator to be switched to a second operation mode;
when the output load ratio information is larger than a preset threshold value, if the detection device cannot detect that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is in no-load, and the main control system controls the escalator to be switched to a fault mode.
The first operation mode is a low-speed operation mode, and the second operation mode is a high-speed operation mode.
When the main control system controls the escalator to be switched to a failure mode, the light-emitting device sends out an alarm signal.
The detection control system of the escalator comprises a pedal, a server, a main control system, a storage unit, a detection device and a light-emitting device, wherein the pedal is electrically connected with the main control system; the server is provided with a transmitting end, the master control system is provided with a receiving end, and the transmitting end is electrically connected with the receiving end;
the pedal is used for loading pedestrians or goods and enabling the pedestrians or the goods to reach a specified place;
the frequency converter is used for detecting the current passing through the frequency converter in real time and outputting the real-time current information;
the storage unit is used for storing no-load reference current information and full-load reference current information;
the main control system is used for acquiring real-time current information of the escalator; the escalator load-carrying ratio calculation device is used for calling no-load reference current information and full-load reference current information in the storage unit, calculating the load ratio of the escalator and outputting the load ratio information; the escalator control system is used for controlling the escalator to be switched to a corresponding first operation mode, a second operation mode and a fault mode for operation;
the detection device is used for detecting the condition of the escalator load, acquiring the detection information of the escalator load and outputting the detection information;
and the light-emitting device is used for sending out an alarm signal when the escalator is in a failure mode.
It should be noted that:
1. the first operation mode and the second operation mode are opposite in operation speed.
2. The value of the preset threshold value of the escalator is 1.
The following illustrates the advantages or principles of the invention:
1. the detection control method of the escalator comprises the steps that a main control system can obtain load ratio information of a pedal by calculating real-time current information, no-load reference current information and full-load reference current information, can accurately detect the load condition of the pedal by verifying the load ratio information and detection information, controls the pedal to be switched to a corresponding mode to operate, prevents the pedal from entering a high-speed operation mode due to interference information, and further reduces the energy consumption of the pedal in operation;
if the load ratio information shows that the pedal has a load, and the detection device does not detect the passing condition of pedestrians or detects that the information shows that the pedal has no load, the fault of the detection device can be detected in advance, the escalator stops running in time, the dangerous conditions such as overload and reversion of the escalator are avoided, the safety coefficient of the escalator is improved, the escalator can be maintained in time when small faults occur, and the subsequent equipment maintenance cost is reduced.
2. The detection device obtains detection information and can provide parameter support and preparation for the main control system to control the switching operation mode of the escalator.
3. Before the escalator is started to operate, the preset no-load reference current information and the preset full-load reference current information are permanently stored in the storage unit, so that the data information of the escalator in the long-term use process is prevented from being lost.
4. The no-load reference current information and the full-load reference current information are preset and stored, so that the main control system can be directly and quickly called to calculate when calculating the load ratio, the calculation process of the main control system can be simplified, and the calculation of the main control system is more efficient.
5. The escalator has a first operation mode, a second operation mode and a fault mode, the escalator can be more energy-saving due to the matched operation between the first operation mode and the second operation mode, the escalator can be switched to the fault mode when a detection device of the escalator breaks down, and the main control system controls the escalator to stop operating and timely enter a maintenance state.
6. When the output load ratio information is smaller than the preset threshold value, the running speed of the escalator in the first running mode is lower than that in the second running mode, so that the energy consumption can be saved; when the output load ratio information is larger than the preset threshold value, the main control system controls the escalator to be switched to the corresponding operation mode, and the escalator can be accurately switched to the corresponding mode to operate through the relationship between the load ratio information and the preset threshold value.
7. Through the size relation between the load ratio information and the preset threshold value, the energy consumption can be saved when the escalator is in the first operation mode; whether the detection device breaks down or not can be judged in time, and the escalator is prevented from entering a second running mode due to interference of the detection device when no load exists; whether the detection device is abnormal or not is judged in advance according to the load ratio information, a fault is reported in time, the situation that the escalator is overloaded or has a reversal fault is prevented, and the life and property safety of pedestrians is further guaranteed through double protection of the load ratio information and the detection device.
8. The first operation mode is a low-speed operation mode, the second operation mode is a high-speed operation mode, the low-speed operation mode saves more energy than the high-speed operation mode, and when the escalator is loaded, the low-speed operation mode is switched to the high-speed operation mode, so that the trip time of pedestrians is not delayed.
9. When the detection device of the escalator breaks down, the alarm signal sent by the light-emitting device can be timely found by workers and further safety protection operation can be carried out.
10. The detection control system of the escalator comprises a pedal, a server, a main control system, a storage unit, a detection device and a light-emitting device, wherein the pedal is electrically connected with the main control system; the server is provided with a transmitting end, the master control system is provided with a receiving end, and the transmitting end is electrically connected with the receiving end; the pedal is used for loading pedestrians or goods and enabling the pedestrians or the goods to reach a specified place; the frequency converter is used for detecting the current passing through the frequency converter in real time and outputting the real-time current information; the storage unit is used for storing no-load reference current information and full-load reference current information; the main control system is used for acquiring real-time current information of the escalator; the escalator load-carrying ratio calculation device is used for calling no-load reference current information and full-load reference current information in the storage unit, calculating the load ratio of the escalator and outputting the load ratio information; the escalator control system is used for controlling the escalator to be switched to a corresponding first operation mode, a second operation mode and a fault mode for operation; the detection device is used for detecting the condition of the escalator load, acquiring the detection information of the escalator load and outputting the detection information; and the light-emitting device is used for sending out an alarm signal when the escalator is in a failure mode.
Drawings
Fig. 1 is a flow chart of a detection control method of an escalator according to an embodiment of the present invention.
Detailed Description
The following provides a detailed description of embodiments of the invention.
As shown in fig. 1, the detection control method of the escalator includes the following steps: starting and operating the escalator; detecting the current passing through the frequency converter in real time to obtain real-time current information; outputting real-time current information; the main control system acquires the real-time current information, obtains the load ratio of the escalator by calculating the real-time current information, the no-load reference current information and the full-load reference current information, and outputs the load ratio information; the detection device detects the condition of the escalator load, obtains the detection information of the escalator load and outputs the detection information; and the main control system controls the escalator to be switched into a corresponding mode to operate according to the load ratio information and the detection information.
The detection control method of the escalator further comprises the following steps: before the escalator is started to run, presetting no-load reference current information and full-load reference current information, and storing the preset no-load reference current information and the preset full-load reference current information in a storage unit; when the main control system obtains the real-time current information, the main control system also calls the no-load reference current information and the full-load reference current information from the storage unit.
When no-load reference current information and full-load reference current information are preset, a preset threshold value is also preset, and the preset threshold value is stored in a storage unit; when the main control system calls the no-load reference current information and the full-load reference current information from the storage unit, a preset threshold value is called, and the value of the preset threshold value is 1.
The detection device detects the passing condition of the pedestrian, and when the detection device detects that the pedestrian enters the pedal, the detection device acquires the detection information of the escalator in the loading process; the operation mode of the escalator at least comprises a first operation mode, a second operation mode and a fault mode; the operating speed of the first operating mode is slower than the operating speed of the second operating mode; when the escalator is in a failure mode, the escalator stops running and enters a maintenance and overhaul state.
The detection control method of the escalator further comprises the following steps: when the output load ratio information is smaller than a preset threshold value, the main control system controls the escalator to carry out a first operation mode; when the output load ratio information is larger than a preset threshold value, the main control system controls the escalator to be switched to a corresponding fault mode or a second operation mode to operate; when the output load ratio information is larger than a preset threshold value, if the detection device detects that a pedestrian enters the pedal, the detection information collected by the detection device displays that the escalator is a load, and the main control system controls the escalator to be switched to a second operation mode; when the output load ratio information is larger than a preset threshold value, if the detection device cannot detect that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is in no-load, and the main control system controls the escalator to be switched to a fault mode.
When the main control system controls the escalator to be switched to a fault mode, the light-emitting device sends out an alarm signal; the first operation mode is a low-speed operation mode, and the second operation mode is a high-speed operation mode.
The master control system can calculate the load ratio when the pedal runs according to the following formula:
wherein T represents a load ratio, I0Expressed as real-time current information, IeExpressed as no-load reference current information, IfRepresented as full load reference current information.
The detection control system of the escalator comprises a pedal, a server, a main control system, a storage unit, a detection device and a light-emitting device, wherein the pedal is electrically connected with the main control system; the server is provided with a transmitting end, the master control system is provided with a receiving end, and the transmitting end is electrically connected with the receiving end; the pedal is used for loading pedestrians or goods and enabling the pedestrians or the goods to reach a specified place; the frequency converter is used for detecting the current passing through the frequency converter in real time and outputting the real-time current information; the storage unit is used for storing no-load reference current information and full-load reference current information; the main control system is used for acquiring real-time current information of the escalator; the escalator load-carrying ratio calculation device is used for calling no-load reference current information and full-load reference current information in the storage unit, calculating the load ratio of the escalator and outputting the load ratio information; the escalator control system is used for controlling the escalator to be switched to a corresponding first operation mode, a second operation mode and a fault mode for operation; the detection device is used for detecting the condition of the escalator load, acquiring the detection information of the escalator load and outputting the detection information; and the light-emitting device is used for sending out an alarm signal when the escalator is in a failure mode.
The embodiment has the following advantages:
1. the detection control method of the escalator comprises the steps that a main control system can obtain load ratio information of a pedal by calculating real-time current information, no-load reference current information and full-load reference current information, can accurately detect the load condition of the pedal by verifying the load ratio information and detection information, controls the pedal to be switched to a corresponding mode to operate, prevents the pedal from entering a high-speed operation mode due to interference information, and further reduces the energy consumption of the pedal in operation;
if the load ratio information shows that the pedal has a load, and the detection device does not detect the passing condition of pedestrians or detects that the information shows that the pedal has no load, the fault of the detection device can be detected in advance, the escalator stops running in time, the dangerous conditions such as overload and reversion of the escalator are avoided, the safety coefficient of the escalator is improved, the escalator can be maintained in time when small faults occur, and the subsequent equipment maintenance cost is reduced.
2. The detection device obtains detection information and can provide parameter support and preparation for the main control system to control the switching operation mode of the escalator.
3. Before the escalator is started to operate, the preset no-load reference current information and the preset full-load reference current information are permanently stored in the storage unit, so that the data information of the escalator in the long-term use process is prevented from being lost.
4. The no-load reference current information and the full-load reference current information are preset and stored, so that the main control system can be directly and quickly called to calculate when calculating the load ratio, the calculation process of the main control system can be simplified, and the calculation of the main control system is more efficient.
5. The escalator has a first operation mode, a second operation mode and a fault mode, the escalator can be more energy-saving due to the matched operation between the first operation mode and the second operation mode, the escalator can be switched to the fault mode when a detection device of the escalator breaks down, and the main control system controls the escalator to stop operating and timely enter a maintenance state.
6. When the output load ratio information is smaller than the preset threshold value, the running speed of the escalator in the first running mode is lower than that in the second running mode, so that the energy consumption can be saved; when the output load ratio information is larger than the preset threshold value, the main control system controls the escalator to be switched to the corresponding operation mode, and the escalator can be accurately switched to the corresponding mode to operate through the relationship between the load ratio information and the preset threshold value.
7. Through the size relation between the load ratio information and the preset threshold value, the energy consumption can be saved when the escalator is in the first operation mode; whether the detection device breaks down or not can be judged in time, and the escalator is prevented from entering a second running mode due to interference of the detection device when no load exists; whether the detection device is abnormal or not is judged in advance according to the load ratio information, a fault is reported in time, the situation that the escalator is overloaded or has a reversal fault is prevented, and the life and property safety of pedestrians is further guaranteed through double protection of the load ratio information and the detection device.
8. The first operation mode is a low-speed operation mode, the second operation mode is a high-speed operation mode, the low-speed operation mode saves more energy than the high-speed operation mode, and when the escalator is loaded, the low-speed operation mode is switched to the high-speed operation mode, so that the trip time of pedestrians is not delayed.
9. When the detection device of the escalator breaks down, the alarm signal sent by the light-emitting device can be timely found by workers and further safety protection operation can be carried out.
10. The detection control system of the escalator comprises a pedal, a server, a main control system, a storage unit, a detection device and a light-emitting device, wherein the pedal is electrically connected with the main control system; the server is provided with a transmitting end, the master control system is provided with a receiving end, and the transmitting end is electrically connected with the receiving end; the pedal is used for loading pedestrians or goods and enabling the pedestrians or the goods to reach a specified place; the frequency converter is used for detecting the current passing through the frequency converter in real time and outputting the real-time current information; the storage unit is used for storing no-load reference current information and full-load reference current information; the main control system is used for acquiring real-time current information of the escalator; the escalator load-carrying ratio calculation device is used for calling no-load reference current information and full-load reference current information in the storage unit, calculating the load ratio of the escalator and outputting the load ratio information; the escalator control system is used for controlling the escalator to be switched to a corresponding first operation mode, a second operation mode and a fault mode for operation; the detection device is used for detecting the condition of the escalator load, acquiring the detection information of the escalator load and outputting the detection information; and the light-emitting device is used for sending out an alarm signal when the escalator is in a failure mode.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (8)
1. The detection control method of the escalator is characterized by comprising the following steps:
starting and operating the escalator;
detecting the current passing through the frequency converter in real time to obtain real-time current information;
outputting real-time current information;
the main control system acquires the real-time current information, obtains the load ratio of the escalator by calculating the real-time current information, the no-load reference current information and the full-load reference current information, and outputs the load ratio information;
the detection device detects the condition of the escalator load, obtains the detection information of the escalator load and outputs the detection information;
the main control system controls the escalator to be switched into a corresponding mode to operate according to the load ratio information and the detection information;
the escalator at least comprises a first operation mode, a second operation mode and a fault mode; the operating speed of the first operating mode is slower than the operating speed of the second operating mode; when the escalator is in a failure mode, the escalator stops running and enters a maintenance state;
when the output load ratio information is larger than a preset threshold value, if the detection device detects that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is a load, and the main control system controls the escalator to be switched to a second operation mode;
when the output load ratio information is larger than a preset threshold value, if the detection device cannot detect that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is in no-load, and the main control system controls the escalator to be switched to a fault mode.
2. The escalator detection control method according to claim 1, wherein the detection device detects the passing condition of the pedestrian, and when the detection device detects that the pedestrian enters the step, the detection device collects the detection information of the escalator under load.
3. The escalator detection control method as claimed in claim 1, further comprising the steps of:
before the escalator is started to run, no-load reference current information and full-load reference current information are preset, and the preset no-load reference current information and the preset full-load reference current information are stored in a storage unit.
4. A detection and control method for an escalator as claimed in claim 3, further comprising the steps of:
when the main control system obtains the real-time current information, the main control system also calls the no-load reference current information and the full-load reference current information from the storage unit.
5. The escalator detection control method as claimed in claim 1, further comprising the steps of:
and when the output load ratio information is smaller than a preset threshold value, the main control system controls the escalator to carry out a first operation mode.
6. An escalator detection and control method as claimed in any one of claims 1-5, wherein said first mode of operation is a low speed mode of operation and said second mode of operation is a high speed mode of operation.
7. A detection and control method as claimed in any one of claims 1 to 5, characterized in that when the main control system controls the escalator to switch to a failure mode, the light emitting device emits an alarm signal.
8. The detection control system of the escalator is characterized by comprising a pedal, a server, a master control system, a storage unit, a detection device and a light-emitting device, wherein the pedal is electrically connected with the master control system; the server is provided with a transmitting end, the master control system is provided with a receiving end, and the transmitting end is electrically connected with the receiving end;
the pedal is used for loading pedestrians or goods and enabling the pedestrians or the goods to reach a specified place;
the frequency converter is used for detecting the current passing through the frequency converter in real time and outputting real-time current information;
the storage unit is used for storing no-load reference current information and full-load reference current information;
the main control system is used for acquiring real-time current information of the escalator; the escalator load-carrying ratio calculation device is used for calling no-load reference current information and full-load reference current information in the storage unit, calculating the load ratio of the escalator and outputting the load ratio information; the escalator control system is used for controlling the escalator to be switched to a corresponding first operation mode, a second operation mode and a fault mode for operation;
the detection device is used for detecting the condition of the escalator load, acquiring the detection information of the escalator load and outputting the detection information;
the light-emitting device is used for sending out an alarm signal when the escalator is in a fault mode;
the main control system controls the escalator to be switched to a corresponding mode to operate according to the load ratio information and the detection information;
when the load ratio information output by the main control system is larger than a preset threshold value, if the detection device detects that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is a load, and the main control system controls the escalator to be switched to a second operation mode;
when the load ratio information output by the main control system is larger than a preset threshold value, if the detection device cannot detect that a pedestrian enters the pedal, the detection information acquired by the detection device displays that the escalator is in no-load, and the main control system controls the escalator to be switched to a fault mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224689.0A CN109160411B (en) | 2018-10-19 | 2018-10-19 | Detection control method and system for escalator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224689.0A CN109160411B (en) | 2018-10-19 | 2018-10-19 | Detection control method and system for escalator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109160411A CN109160411A (en) | 2019-01-08 |
| CN109160411B true CN109160411B (en) | 2020-07-17 |
Family
ID=64878728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811224689.0A Active CN109160411B (en) | 2018-10-19 | 2018-10-19 | Detection control method and system for escalator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109160411B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100509605C (en) * | 2007-01-31 | 2009-07-08 | 武汉捷能自动化技术有限公司 | Energy-saving controller of automatic elevator |
| JP2010064884A (en) * | 2008-09-12 | 2010-03-25 | Toshiba Elevator Co Ltd | Passenger conveyor |
| JP2011063399A (en) * | 2009-09-18 | 2011-03-31 | Toshiba Elevator Co Ltd | Warning device of passenger conveyor |
| CN102234057A (en) * | 2010-05-07 | 2011-11-09 | 上海三菱电梯有限公司 | Control device for escalator and automatic sidewalk |
| CN102491159B (en) * | 2011-12-15 | 2014-04-16 | 日立电梯（广州）自动扶梯有限公司 | Staircase power control system |
| CN108163690A (en) * | 2017-12-29 | 2018-06-15 | 通力电梯有限公司 | Equipment, escalator and the method that escalator is monitored online is monitored online |
-
2018
- 2018-10-19 CN CN201811224689.0A patent/CN109160411B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109160411A (en) | 2019-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107966692B (en) | Laser radar with self-checking function | |
| CN101749197B (en) | Wind power plant and method for operating obstacle or hazard lighting of a wind power plant | |
| CN106672763B (en) | Monitoring method of the elevator door light curtain to elevator cage door closed state | |
| CN102192009B (en) | Device and method for monitoring working condition of diesel engine intelligently | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN207684680U (en) | Band-type brake coil control circuit, band-type brake control power-supply device and elevator | |
| KR101294684B1 (en) | Streetlamp remote control system using ubiquitus sensor network | |
| CN105121324A (en) | Elevator having a safety chain with a series connection of safety switch arrangements | |
| CN101691189A (en) | Method for detecting overload crane by detecting power | |
| CN109160411B (en) | Detection control method and system for escalator | |
| CN204038800U (en) | Elevator traction steel band rope break detection device | |
| CN104743446A (en) | Braking torque detecting method and system of crane brake | |
| JP2008129663A (en) | Photovoltaic power generation system having remote display function | |
| CN110552872A (en) | Intelligent water pump controller and control method | |
| US20230078868A1 (en) | Device and method for diagnosing failure of inverter initial charging circuit | |
| CN206705428U (en) | A kind of elevator safety loop detects circuit | |
| CN202785145U (en) | Elevator traction system protection device based on current detection | |
| CN210914853U (en) | Elevator car stopping system and elevator | |
| CN204595591U (en) | The remote switch apparatus control system that a kind of bringing onto load detects | |
| CN205442362U (en) | Separated type automatic escalator control system | |
| CN109292556B (en) | Control method and device of elevator brake, band-type brake power supply and storage medium | |
| CN215682711U (en) | Processing system for dealing with line leakage in direct-current lighting power supply | |
| CN212435999U (en) | Railway projection lamp capable of remotely dimming and automatically alarming fault | |
| CN103269122B (en) | Power distribution automatic terminal and method for improving reliability of breaker | |
| EP4397614A1 (en) | Method and system for detecting person trapped by elevator car |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |