CN112010219A - Elevator brake real-time state monitoring/early warning system - Google Patents
Elevator brake real-time state monitoring/early warning system Download PDFInfo
- Publication number
- CN112010219A CN112010219A CN202010973845.4A CN202010973845A CN112010219A CN 112010219 A CN112010219 A CN 112010219A CN 202010973845 A CN202010973845 A CN 202010973845A CN 112010219 A CN112010219 A CN 112010219A
- Authority
- CN
- China
- Prior art keywords
- sensor
- brake
- subsystem
- elevator
- module
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007621 cluster analysis Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a real-time state monitoring/early warning system of an elevator brake, which comprises: a tractor, a brake, a sensor subsystem, a logic subsystem and a final element subsystem; the sensor subsystem is connected with the logic subsystem; the logic subsystem is connected with the final element subsystem; the sensor subsystem includes: a sensor component; the elevator brake real-time status monitoring/early warning system comprises: the elevator system, the elevator brake, the sensor component, the input module, the logic processing module and the early warning/output module; the final element subsystem can cut off the power supply of the brake in time when a fault or danger occurs. The invention solves the control of the system power supply by connecting the output switch of the monitoring system into the safety loop, and ensures the safety of personnel and equipment.
Description
Technical Field
The invention relates to the technical field of real-time state monitoring, in particular to a real-time state monitoring/early warning system for an elevator brake.
Background
For a long time, the elevator brake widely adopts the methods of electrical detection, factory equipment detection and mechanical detection and periodic spot check integral test to ensure the normal operation of the brake. This detection method still has obvious disadvantages: (1) if a fault occurs in the detection, an accident has occurred; (2) the periodic spot check time is difficult to control the interval time, and if the interval is too long, the safety between detections cannot be ensured, and the interval is too short, which causes waste. Meanwhile, in the data analysis process, a single path is mostly used for source information data, diagnosis and early warning are carried out according to expert-based experience, and accurate quantitative analysis is lacked.
Patent document CN107814288A discloses an intelligent monitoring and early warning method for an elevator brake, which adopts a non-contact measurement method to collect key parameters and gives the running state of a machine based on SVM cluster analysis. The defects of the prior art are as follows: the monitoring system has the main functions of monitoring the running state of the brake and recording related running data, and is analyzed and judged by expert experience according to the change curve of physical parameters, so that the research on a fault early warning algorithm is lacked; meanwhile, the monitoring system is not subjected to function safety certification, and the reliability and safety in the operation process cannot be effectively guaranteed, so that the requirement of the function safety of the elevator cannot be met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an elevator brake real-time state monitoring/early warning system.
The invention provides an elevator brake real-time state monitoring/early warning system, which comprises: a tractor, a brake, a sensor subsystem, a logic subsystem and a final element subsystem;
the sensor subsystem is connected with the logic subsystem;
the logic subsystem is connected with the final element subsystem;
the sensor subsystem includes: a sensor component;
the elevator brake real-time status monitoring/early warning system comprises: the elevator system, the elevator brake, the sensor component, the input module, the logic processing module and the early warning/output module;
the elevator system and the elevator brake are respectively connected with the sensor component;
the input module is connected with the sensor component;
the input module is connected with the logic processing module;
the logic processing module is connected with the early warning/output module;
the final element subsystem is connected with a brake;
the final element subsystem can cut off the power supply of the brake in time when a fault or danger occurs.
Preferably, the sensor part includes: an alternating voltage sensor, an alternating current sensor;
the alternating current voltage sensor and the alternating current sensor are respectively connected with an elevator system;
and the alternating current voltage sensor and the alternating current sensor are respectively connected with the input module.
Preferably, the sensor part includes: a displacement sensor, a temperature sensor, a direct current voltage sensor, a direct current sensor and a noise sensor;
the displacement sensor, the temperature sensor, the direct current voltage sensor, the direct current sensor and the noise sensor are respectively connected with the elevator brake;
and the displacement sensor, the temperature sensor, the direct-current voltage sensor, the direct-current sensor and the noise sensor are respectively connected with the input module.
Preferably, the sensor subsystem further comprises: a rotary encoder;
the rotary encoder is connected with an elevator system;
the rotary encoder is connected with the input module.
Preferably, the sensor subsystem further comprises: a microswitch;
the microswitch is connected with an elevator brake;
the micro switch is connected with the input module.
Preferably, the method further comprises the following steps: a direct current transmitter, a perforated alternating current transmitter;
the alternating current voltage sensor, the alternating current sensor, the direct current voltage sensor and the direct current sensor are connected in parallel to monitor the coil voltage of the brake on the coil positive electrode and the coil negative electrode of the brake;
the direct current transducer is connected in series on a circuit of the brake to monitor current;
and the perforated alternating current transmitter monitors the output current of the traction machine.
Preferably, the temperature sensor is a J-type wire thermocouple.
Preferably, the displacement sensor is a laser displacement sensor.
Preferably, the rotary encoder is a hadham absolute encoder.
Preferably, the logic subsystem comprises: MCU component, power module, power monitoring module, watchdog module and storage module.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the reading of the encoder, the gap of the brake, the friction noise, the voltage of the brake, the current of the brake, the temperature of the coil and the response time of the microswitch are taken as data objects collected by a monitoring system, so that the problems of recognizing physical phenomena such as over-small braking distance, over-large air gap, abrasion of a friction plate, over-low voltage of the coil, over-low current of the coil, overheating of the coil, insufficient residual voltage, current and spring force of the coil and the like are solved;
2. the output switch of the monitoring system is connected into the safety loop, so that the control of a system power supply is realized, and the safety of personnel and equipment is ensured;
3. the invention adopts the master system and the slave system to simultaneously complete the function of monitoring the running state of the brake, thereby solving the problem that the system enters a safe state when one of the two channels has random faults.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the overall structural framework of the present invention.
Fig. 2 is a hardware block diagram of an elevator brake monitoring system in an embodiment of the present invention.
FIG. 3 is a schematic diagram of the overall framework of a sensor subsystem in an embodiment of the invention.
Fig. 4 is a schematic diagram of the overall layout of the sensor in the embodiment of the present invention.
FIG. 5 is a block diagram of an embodiment of an output circuit module.
Fig. 6 is a schematic view of an elevator safety circuit in an embodiment of the present invention.
In the figure:
k-elevator brake monitoring system output switch; BRAKE for elevator
M-traction machine KM 1-traction machine contactor
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the invention, the elevator brake real-time state monitoring/early warning system provided by the invention comprises: a tractor, a brake, a sensor subsystem, a logic subsystem and a final element subsystem;
the sensor subsystem is connected with the logic subsystem;
the logic subsystem is connected with the final element subsystem;
the sensor subsystem includes: a sensor component;
the elevator brake real-time status monitoring/early warning system comprises: the elevator system, the elevator brake, the sensor component, the input module, the logic processing module and the early warning/output module;
the elevator system and the elevator brake are respectively connected with the sensor component;
the input module is connected with the sensor component;
the input module is connected with the logic processing module;
the logic processing module is connected with the early warning/output module;
the final element subsystem is connected with a brake;
the final element subsystem can cut off the power supply of the brake in time when a fault or danger occurs.
Preferably, the sensor part includes: an alternating voltage sensor, an alternating current sensor;
the alternating current voltage sensor and the alternating current sensor are respectively connected with an elevator system;
and the alternating current voltage sensor and the alternating current sensor are respectively connected with the input module.
Preferably, the sensor part includes: a displacement sensor, a temperature sensor, a direct current voltage sensor, a direct current sensor and a noise sensor;
the displacement sensor, the temperature sensor, the direct current voltage sensor, the direct current sensor and the noise sensor are respectively connected with the elevator brake;
and the displacement sensor, the temperature sensor, the direct-current voltage sensor, the direct-current sensor and the noise sensor are respectively connected with the input module.
Preferably, the sensor subsystem further comprises: a rotary encoder;
the rotary encoder is connected with an elevator system;
the rotary encoder is connected with the input module.
Preferably, the sensor subsystem further comprises: a microswitch;
the microswitch is connected with an elevator brake;
the micro switch is connected with the input module.
Preferably, the method further comprises the following steps: a direct current transmitter, a perforated alternating current transmitter;
the alternating current voltage sensor, the alternating current sensor, the direct current voltage sensor and the direct current sensor are connected in parallel to monitor the coil voltage of the brake on the coil positive electrode and the coil negative electrode of the brake;
the direct current transducer is connected in series on a circuit of the brake to monitor current;
and the perforated alternating current transmitter monitors the output current of the traction machine.
Preferably, the temperature sensor is a J-type wire thermocouple.
Preferably, the displacement sensor is a laser displacement sensor.
Preferably, the rotary encoder is a hadham absolute encoder.
Preferably, the logic subsystem comprises: MCU component, power module, power monitoring module, watchdog module and storage module.
The elevator brake monitoring system can monitor temperature, noise, electric signals, encoder signals and microswitch signals in real time, and realize random fault judgment of the elevator brake and fault early warning of brake failure. And meets the design requirements of hardware safety integrity for SIL2 (safety integrity level, SIL) second level).
Specifically, in one embodiment, the elevator brake real-time status monitoring/early warning system is divided into three subsystems, namely a sensor subsystem, a logic subsystem and a final element subsystem, according to the functional requirements and reliability requirements of the monitoring system.
The sensor subsystem of the elevator brake monitoring system mainly comprises a thermocouple, a voltage and current sensor, a noise sensor, a laser displacement sensor, an encoder and a microswitch signal, and is respectively used for measuring the changes of analog quantity and digital quantity such as coil temperature, voltage and current, brake noise, abrasion degree, brake distance, brake response time and the like in the brake contracting and releasing processes.
1. A voltage current sensor. The voltage and current sensor is connected in parallel to monitor the voltage of the brake coil on the positive pole and the negative pole of the brake coil; the direct current transducer is connected in series on the brake circuit to monitor the current; the perforated alternating current transmitter monitors the output current of the traction machine.
2. A temperature sensor. A J-shaped linear thermocouple with high sensitivity, stability and uniformity is used as a temperature sensor and is embedded into a coil to detect the high temperature generated by the coil under the continuous power supply when an elevator brake works.
3. A noise sensor. In the brake from normal work to the inefficacy in-process, the brake shoe can produce wearing and tearing gradually, and the sound that its band-type brake produced can send the change, installs noise sensor outside the electric appliance cabinet, and mic mouth is towards the brake, and the distance sets up 5m, can monitor the unusual change (intensity of sound, audio frequency) that produces sound of band-type brake to catch the abnormal conditions of braking.
4. And a displacement sensor. The laser displacement sensor is adopted to indirectly measure the gap between the brake wheel and the brake shoe and the abrasion loss of the brake shoe.
5. An encoder. The elevator brake encoder is a Haidenhain absolute value encoder, the incremental signal output is an orthogonal sine and cosine signal, an orthogonal analog signal is converted into a pulse signal, and the orthogonal pulse signal required by people is obtained and used as the output.
6. A micro switch. The 24V digital quantity of the microswitch is provided by the PLC, and the signal is acquired by the data acquisition and control board card, and the microswitch is mainly used for the following two functions: 1. when a coil in the electromagnetic coil is electrified, the armature magnetic disc is pulled to the coil bracket, and the microswitch sends out a signal when the brake is in place, so that the brake-off response time of the brake is judged; 2. when the brake is powered off, the armature disc returns to the initial position again, the microswitch signal returns to the low level again, and the closing response time is deduced according to the low level time obtained by the chip and the power-off time of the brake.
The logic subsystem of the elevator brake monitoring system mainly comprises a high-reliability MCU, a power supply module, a power supply monitoring module, a watchdog module and a storage module.
The final element subsystem of the elevator brake monitoring system is used for timely cutting off the power supply of the traction machine and the brake when judging that a fault or a danger exists, so that the final element subsystem can be regarded as a safety relay output connected into a safety loop. The power supply of the traction machine and the brake is controlled by connecting the relay output of the system into a safety loop.
In an elevator brake monitoring system, the system is divided into a master module and a slave module, and the master module and the slave module can respectively complete the function of monitoring the running state of a brake. And the MCU of the master module and the MCU of the slave module carry out data communication interaction through the SPI. Since the two modules are identical in structure, the functions of the respective modules will be described below with reference to the main module. The AD processing module is used for receiving, collecting and processing analog quantity measured by each sensor; the optocoupler input module is used for acquiring signals of the microswitch so as to judge the brake contracting and opening action condition of the brake; the RTC module is used as a clock module and used for storing and recording the time of failure; the watchdog module is used for realizing a reset function when detecting that the MCU generates a system error; the human-computer interface is used for displaying fault codes and the residual service life of the machine; the EEPROM is used for storing fault information and elevator brake related parameters; the power supply circuit provides power for the system, and the power supply monitoring ensures that the power supply voltage state of the system is kept normal; the relay is used as an output element and is connected in the safety circuit in series, when one relay of the master module and the slave module is disconnected, the safety circuit is automatically disconnected, and the system is powered off and enters a safety state.
The design module of the output circuit is shown in fig. 5, two relays are respectively controlled by respective MCUs at a module A and a module B, and when the initialization of the two MCUs is completed and the mutual information is normal, the two relays are simultaneously opened, the safety loop is switched on, and the test is started. When one MCU can not control the relay in time due to random faults, the other MCU can feed back according to the interactive information so as to cut off the output of the relay, so that the elevator keeps a safe state, and the functional safety of the whole system can be ensured.
The chip of the minimum system module of the microcontroller selects TMS570LC4357 of Ti company, the chip is provided with a lockstep double ARM Cortex-R5F floating-point inner core, can meet the requirements of IEC 61508SIL3 safety standard, integrates ADC interfaces of 41 channels, 5 MibSPI communication interfaces, 4 UART interfaces, 168 GPIO interfaces, I2C communication and EMIF communication interfaces, and can meet the connection with other circuits. The two MCUs communicate in a MibSPI mode, and according to requirements of a PESSRAL circuit, when one of the two channels has random faults, the system enters a safe state. In the method, a main system sends query requests to an auxiliary MCU at the beginning and the end of each cycle, similarly, the auxiliary MCU waits for the MCU to send the query requests at the beginning and the end of each cycle, and if two pieces of information are inconsistent or one MCU system falls into a dead cycle to cause communication failure, the system is in a safe state through relay output. By means of mutual real-time supervision of the two MCUs, the probability of random faults can be greatly reduced, and reliability is improved.
In order to guarantee reliability and safety, the integrated circuit is finally divided into A, B core boards and a bottom board, wherein A, B two identical core boards mainly comprise a minimum module of a microcontroller, an ADC input module and a storage module, the bottom board comprises the rest parts, and two groups of interfaces on the bottom board are respectively in butt joint with A, B two core boards.
According to the invention, the reading of the encoder, the gap of the brake, the friction noise, the voltage of the brake, the current of the brake, the temperature of the coil and the response time of the microswitch are taken as data objects collected by a monitoring system, so that the problems of recognizing physical phenomena such as over-small braking distance, over-large air gap, abrasion of a friction plate, over-low voltage of the coil, over-low current of the coil, overheating of the coil, insufficient residual voltage, current and spring force of the coil and the like are solved;
the output switch of the monitoring system is connected into the safety loop, so that the control of a system power supply is realized, and the safety of personnel and equipment is ensured;
the invention adopts the master system and the slave system to simultaneously complete the function of monitoring the running state of the brake, thereby solving the problem that the system enters a safe state when one of the two channels has random faults.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An elevator brake real-time condition monitoring/warning system, comprising: a tractor, a brake, a sensor subsystem, a logic subsystem and a final element subsystem;
the sensor subsystem is connected with the logic subsystem;
the logic subsystem is connected with the final element subsystem;
the sensor subsystem includes: a sensor component;
the elevator brake real-time status monitoring/early warning system comprises: the elevator system, the elevator brake, the sensor component, the input module, the logic processing module and the early warning/output module;
the elevator system and the elevator brake are respectively connected with the sensor component;
the input module is connected with the sensor component;
the input module is connected with the logic processing module;
the logic processing module is connected with the early warning/output module;
the final element subsystem is connected with a brake;
the final element subsystem can cut off the power supply of the brake in time when a fault or danger occurs.
2. The elevator brake real-time condition monitoring/warning system of claim 1, wherein the sensor component comprises: an alternating voltage sensor, an alternating current sensor;
the alternating current voltage sensor and the alternating current sensor are respectively connected with an elevator system;
and the alternating current voltage sensor and the alternating current sensor are respectively connected with the input module.
3. The elevator brake real-time condition monitoring/warning system of claim 2, wherein the sensor component comprises: a displacement sensor, a temperature sensor, a direct current voltage sensor, a direct current sensor and a noise sensor;
the displacement sensor, the temperature sensor, the direct current voltage sensor, the direct current sensor and the noise sensor are respectively connected with the elevator brake;
and the displacement sensor, the temperature sensor, the direct-current voltage sensor, the direct-current sensor and the noise sensor are respectively connected with the input module.
4. The elevator brake real-time status monitoring/warning system of claim 1, wherein the sensor subsystem further comprises: a rotary encoder;
the rotary encoder is connected with an elevator system;
the rotary encoder is connected with the input module.
5. The elevator brake real-time status monitoring/warning system of claim 1, wherein the sensor subsystem further comprises: a microswitch;
the microswitch is connected with an elevator brake;
the micro switch is connected with the input module.
6. The elevator brake real-time condition monitoring/warning system of claim 3, further comprising: a direct current transmitter, a perforated alternating current transmitter;
the alternating current voltage sensor, the alternating current sensor, the direct current voltage sensor and the direct current sensor are connected in parallel to monitor the coil voltage of the brake on the coil positive electrode and the coil negative electrode of the brake;
the direct current transducer is connected in series on a circuit of the brake to monitor current;
and the perforated alternating current transmitter monitors the output current of the traction machine.
7. The elevator brake real-time condition monitoring/warning system of claim 3, wherein the temperature sensor employs a J-type wire thermocouple.
8. The elevator brake real-time condition monitoring/warning system of claim 3, wherein the displacement sensor is a laser displacement sensor.
9. The elevator brake real-time condition monitoring/warning system of claim 3, wherein the rotary encoder employs a Heidenhain absolute encoder.
10. The elevator brake real-time status monitoring/warning system of claim 1, wherein the logic subsystem comprises: MCU component, power module, power monitoring module, watchdog module and storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973845.4A CN112010219A (en) | 2020-09-16 | 2020-09-16 | Elevator brake real-time state monitoring/early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973845.4A CN112010219A (en) | 2020-09-16 | 2020-09-16 | Elevator brake real-time state monitoring/early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112010219A true CN112010219A (en) | 2020-12-01 |
Family
ID=73521448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010973845.4A Pending CN112010219A (en) | 2020-09-16 | 2020-09-16 | Elevator brake real-time state monitoring/early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112010219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874499A (en) * | 2021-01-15 | 2021-06-01 | 合肥青冠机电科技有限公司 | Brake monitoring system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341332A (en) * | 2009-03-05 | 2012-02-01 | 通力股份公司 | Elevator system |
| CN103249662A (en) * | 2010-10-11 | 2013-08-14 | 通力股份公司 | Method in connection with an emergency stop situation of an elevator, and also a safety arrangement for an elevator |
| CN105417297A (en) * | 2015-12-25 | 2016-03-23 | 辽宁优力安机电设备有限公司 | Start and brake method and start and brake system for elevator with magnetorheological fluid brake |
| CN107814288A (en) * | 2017-09-30 | 2018-03-20 | 南京市特种设备安全监督检验研究院 | A kind of method of elevator brake intellectual monitoring early warning |
| CN108059048A (en) * | 2017-11-13 | 2018-05-22 | 西子电梯科技有限公司 | The detection early warning system and method for early warning of a kind of elevator brake |
| CN212863956U (en) * | 2020-09-16 | 2021-04-02 | 上海交通大学 | Elevator brake real-time state monitoring and early warning system |
-
2020
- 2020-09-16 CN CN202010973845.4A patent/CN112010219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341332A (en) * | 2009-03-05 | 2012-02-01 | 通力股份公司 | Elevator system |
| CN103249662A (en) * | 2010-10-11 | 2013-08-14 | 通力股份公司 | Method in connection with an emergency stop situation of an elevator, and also a safety arrangement for an elevator |
| CN105417297A (en) * | 2015-12-25 | 2016-03-23 | 辽宁优力安机电设备有限公司 | Start and brake method and start and brake system for elevator with magnetorheological fluid brake |
| CN107814288A (en) * | 2017-09-30 | 2018-03-20 | 南京市特种设备安全监督检验研究院 | A kind of method of elevator brake intellectual monitoring early warning |
| CN108059048A (en) * | 2017-11-13 | 2018-05-22 | 西子电梯科技有限公司 | The detection early warning system and method for early warning of a kind of elevator brake |
| CN212863956U (en) * | 2020-09-16 | 2021-04-02 | 上海交通大学 | Elevator brake real-time state monitoring and early warning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874499A (en) * | 2021-01-15 | 2021-06-01 | 合肥青冠机电科技有限公司 | Brake monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203454922U (en) | Detector for cannon servo system | |
| KR101475415B1 (en) | Release detection apparatus for bolt and nut using elastic contact sensor | |
| CN102826437B (en) | Device for recording and monitoring running of staircase | |
| CN103777626A (en) | Diagnostic method and system for whole vehicle faults of electric vehicle | |
| CN110450819B (en) | Vehicle-mounted ATC equipment operation and maintenance system based on non-contact data acquisition | |
| CN106054763B (en) | Intelligent switchboard online monitoring method device | |
| CN212863956U (en) | Elevator brake real-time state monitoring and early warning system | |
| CN110907856A (en) | Power equipment electric leakage detection system based on magnetic field monitoring | |
| CN112010219A (en) | Elevator brake real-time state monitoring/early warning system | |
| CN109188283A (en) | A kind of electromechanical equipment fault location and alarm protecting apparatus | |
| CN209159923U (en) | A kind of electronic automobile-used micro computer fault self-checking system | |
| CN105510862A (en) | Voltage transformer state monitoring system and method | |
| CN113086802A (en) | Elevator safety loop voltage diagnosis system and method | |
| CN110927623A (en) | Power equipment electric leakage detection system | |
| CN204348016U (en) | A kind of train pyrotechnics warning device | |
| CN208239553U (en) | Substation PT N600 ground connection on-line monitoring positioning device | |
| CN114114132B (en) | Method and system for monitoring abnormality of wiring terminal of electric energy metering device | |
| CN205317922U (en) | Voltage transformer state monitoring system | |
| CN103680072A (en) | Earthquake early warning device and method used for elevator | |
| CN114967636A (en) | Simulation detection method for robot power supply controller | |
| CN110047309A (en) | A kind of signal machine control method and device | |
| CN215217807U (en) | Vibration monitoring system of cigarette making machine | |
| CN215641461U (en) | Device for preventing electricity stealing by strong magnetism | |
| CN116062583A (en) | Elevator brake failure protection device and system | |
| CN218415819U (en) | Direct current power supply management module and system with safety function |
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 |