CN115009949B - Elevator star-sealing state detection method - Google Patents
Elevator star-sealing state detection method Download PDFInfo
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- CN115009949B CN115009949B CN202210829012.XA CN202210829012A CN115009949B CN 115009949 B CN115009949 B CN 115009949B CN 202210829012 A CN202210829012 A CN 202210829012A CN 115009949 B CN115009949 B CN 115009949B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2827—Testing of electronic protection circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of elevator detection, and discloses a method for detecting the star-sealed state of an elevator, which comprises the following steps: (1) the detection unit detects the power supply state of the power supply circuit; (2) when the power supply circuit is switched from power on to power off, the main controller controls the detection switch to be closed so as to input a low-voltage variable-frequency alternating-current power supply to the star-closing circuit and detect a current value I in a loop of the detection switch; (3) when the current value I in the loop is smaller than or equal to the threshold value Y, the main controller judges that the star sealing circuit is open, further judges that the star sealing module is abnormal and sends a fault signal to the control system, and the control system prohibits the elevator equipment from running; when the current value I in the loop is larger than the threshold value Y, the main controller judges that the star sealing circuit is closed, and the star sealing circuit is normal. The method for detecting the star-sealed state of the elevator can detect whether the star-sealed module works normally, ensure the use safety of the elevator and improve the safety level of the elevator.
Description
Technical Field
The invention relates to the technical field of elevator detection, in particular to an elevator star-sealed state detection method.
Background
The existing elevator equipment is often provided with a star sealing module, the star sealing module can prevent abnormal acceleration rotation of a motor on an elevator, and the visible star sealing module is a very important protection device in an elevator system. The method comprises the following steps: in daily use, the braking device effectively controls the motor to stop running; a steel wire traction rope is wound on a motor shaft of the motor, a lift car and a counterweight are respectively hung at two ends of the steel wire traction rope, and the gravity between the lift car and the counterweight is often unbalanced; when the braking device breaks down, so that the motor can run freely, the lift car or the counterweight rotates towards the direction of the weight with the acceleration by drawing the motor shaft through the steel wire traction rope, and further the faults of the lift car rushing to the top or squatting at the bottom and the like are caused, and great potential safety hazards exist; the star sealing module can effectively solve the problems, namely: the star sealing module is connected to a motor winding of the motor, is opened in a normal working state and is closed in an abnormal working state; when the motor rotates in an abnormal working state, the motor winding can generate electric energy, and the closed star sealing module returns the electric energy to the motor winding, so that the rotating speed of the motor shaft is restrained, and the effect of controlling the motor to rotate in an accelerated manner is achieved. Therefore, the star sealing module is an important protection device in the elevator system; however, there is no special device or method for detecting whether the star-sealed module is operating normally in the market temporarily, when the star-sealed module has abnormality or wiring error and the elevator system has fault, the car may have fault such as top rushing or bottom squating, and the elevator obviously poses certain threat to users, so there is a need for further improvement of the existing elevator.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the detection method for the star-sealed state of the elevator.
The purpose of the invention is realized as follows:
an elevator star-sealed state detection method is realized, and an elevator star-sealed state detection device for realizing the elevator star-sealed state detection method comprises the following steps:
the input end of the power supply module is electrically connected with a power supply terminal;
the output end of the power supply module is electrically connected with the master controller;
the output end of the power supply module is electrically connected with the detection unit, and the detection unit is electrically connected with a star sealing module on the elevator equipment; the detection unit sends a detection signal to the master controller, and the master controller sends a control signal to the detection unit;
the star sealing module comprises more than one group of star sealing circuits, the star sealing circuits are electrically connected with motor windings on the traction machine, and the more than one group of star sealing circuits are closed to enter a star sealing state; the detection unit comprises more than one group of detection switches which correspond to the star sealing circuits one by one, and the detection switches are electrically connected with the corresponding star sealing circuits; the traction machine is electrically connected with a power supply circuit to obtain electric energy required by work;
the elevator star-sealing state detection method comprises the following steps:
(1) the detection unit detects the power supply state of the power supply circuit;
(2) when the power supply circuit is switched from power on to power off, the main controller controls the detection switch to be closed so as to input a low-voltage variable-frequency alternating-current power supply to the star-closing circuit and detect a current value I in a loop of the detection switch;
(3) when the current value I in the loop is smaller than or equal to the threshold value Y, the main controller judges that the star sealing circuit is open, further judges that the star sealing module is abnormal and sends a fault signal to a control system, and the control system prohibits the elevator equipment from running; when the current value I in the loop is larger than the threshold value Y, the main controller judges that the star sealing circuit is closed, and the star sealing circuit is normal.
As a specific scheme: the power supply module comprises a frequency conversion circuit for converting a power supply and outputting a low-voltage frequency conversion alternating current power supply (besides, the low-voltage frequency conversion alternating current power supply can also output a low-voltage direct current power supply); the input end of the frequency conversion circuit is electrically connected with the power supply terminal, and the output end of the frequency conversion circuit is electrically connected with the main controller and the detection switch; and a detection signal output unit is arranged between the main controller and the control system, and the main controller sends a fault signal and a normal signal to the control system through the detection signal output unit.
Specifically, the satellite sealing circuit comprises a first satellite sealing circuit, a second satellite sealing circuit and a third satellite sealing circuit, and the detection switch comprises a first detection switch electrically connected with the first satellite sealing circuit, a second detection switch electrically connected with the second satellite sealing circuit and a third detection switch electrically connected with the third satellite sealing circuit;
the step (2) is specifically as follows: when the power supply circuit is out of power, the main controller controls the first detection switch and the second detection switch to be closed, and a first current value I1 in a loop of the first detection switch and the second detection switch is detected;
when the first current value I1 is smaller than or equal to the threshold value Y, the first star circuit and/or the second star circuit are/is judged to be open, the master controller sends a fault signal to the control system, and the control system prohibits the elevator equipment from running;
the step (3) is specifically as follows: when the first current value I1 is larger than a threshold value Y, the main controller controls the first detection switch and the third detection switch to be closed, controls the second detection switch to be opened, and detects a second current value I2 in a loop of the first detection switch and the third detection switch; or the main controller controls the second detection switch and the third detection switch to be closed, controls the first detection switch to be opened, and detects a third current value I3 in a loop of the second detection switch and the third detection switch;
when the second current value I2 or the third current value I3 is smaller than or equal to the threshold value Y, the third star-closing circuit is judged to be open, the main controller sends a fault signal to the control system, and the control system prohibits the elevator equipment from running;
and when the second current value I2 or the third current value I3 is larger than the threshold value Y, judging that the satellite sealing module normally operates.
As a specific scheme: a first star sealing switch is arranged on the first star sealing circuit, a second star sealing switch is arranged on the second star sealing circuit, and a third star sealing switch is arranged on the third star sealing circuit; in a star closing state, the first star closing switch, the second star closing switch and the third star closing switch are closed;
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite circuit and/or the second satellite circuit is open, specifically: when the first current value I1 is smaller than or equal to a threshold value Y, judging that the first satellite sealing switch and/or the second satellite sealing switch are not closed, or the circuit between the first satellite sealing switch and the power supply circuit is disconnected, or the circuit between the first satellite sealing switch and the second satellite sealing switch is disconnected, or the circuit between the second satellite sealing switch and the power supply circuit is disconnected;
when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third star sealing circuit is open, specifically: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third satellite closing switch is not closed, or the circuit between the first satellite closing switch and the third satellite closing switch is opened, or the circuit between the second satellite closing switch and the third satellite closing switch is opened, or the circuit between the third satellite closing switch and the power supply circuit is opened.
As another specific scheme: a first satellite sealing switch is arranged on the first satellite sealing circuit, the second satellite sealing circuit is normally on, and a third satellite sealing switch is arranged on the third satellite sealing circuit; in a star closing state, the first star closing switch and the third star closing switch are closed;
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite sealing circuit and/or the second satellite sealing circuit are/is open, specifically: when the first current value I1 is smaller than or equal to the threshold value Y, judging that the first satellite sealing switch is not closed, or a circuit between the first satellite sealing switch and the power supply circuit is disconnected, or a circuit between the first satellite sealing switch and the second satellite sealing circuit is disconnected, or the second satellite sealing circuit is disconnected with the power supply circuit;
when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third satellite sealing circuit is open, specifically: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third satellite closing switch is not closed, or the circuit between the first satellite closing switch and the third satellite closing switch is opened, or the circuit between the second satellite closing circuit and the third satellite closing switch is opened, or the circuit between the third satellite closing switch and the power supply circuit is opened.
Specifically, the main controller detects the power supply state of the power supply circuit through the detection unit; when the power supply circuit is switched from power on to power off, the main controller controls the detection switch to be closed specifically as follows: after delaying for n seconds, the main controller controls the detection switch to be closed; n.gtoreq.1, preferably 2 seconds.
Specifically, when the control system prohibits the elevator equipment from running due to the abnormality of the satellite sealing module, the control system sends a maintenance and overhaul instruction to a cloud server, and the cloud server issues a maintenance and overhaul task to maintenance personnel; and when the maintenance personnel finish maintenance tasks, sending related signals to the cloud server, and filing and archiving the maintenance conditions of the maintenance by the cloud server.
The invention has the following beneficial effects:
whether the star module of sealing on with effective detection elevator equipment normally operates and whether the wiring is correct through setting up the elevator and sealing star state detection device, and then effectively guarantee the security of elevator equipment use, promote elevator equipment's security level, ensure user safety in utilization.
The elevator star-sealed state detection device comprises a power supply module, a main controller and a detection unit; a frequency conversion circuit in the power supply module inverts a single-phase alternating current power supply of a power grid into two paths of low-voltage frequency conversion alternating current power supplies (or low-voltage direct current power supplies), wherein one path of the low-voltage frequency conversion alternating current power supplies is supplied to the main controller, and the other path of the low-voltage frequency conversion alternating current power supplies is supplied to the detection unit, so that power supply is realized; the detection unit is connected with the star sealing module; the main controller sends a control signal to the detection unit to control the detection unit to complete the star-sealing state detection work, receives the control signal fed back by the detection unit, analyzes and processes the detection signal, feeds back the analysis and processing result to a control system on the elevator equipment, and the control system executes a corresponding control instruction according to the actual situation. The elevator star-sealing state detection device is a device which is independently arranged relative to elevator equipment, can effectively detect the running condition and the wiring condition of a star-sealing module, and ensures the normal and effective running of the star-sealing module; the elevator star-sealed state detection device is independently arranged, so that the elevator star-sealed state detection device can be additionally arranged on the existing elevator equipment on the market, and the elevator star-sealed state detection device is good in universality, strong in adaptability and low in use cost.
In the detection method, a main controller controls a detection switch to be closed so as to input a low-voltage variable-frequency alternating-current power supply to a satellite sealing circuit and detect a current value I in a detection switch loop; when the current value I in the loop is smaller than or equal to the threshold value Y, the main controller judges that the star sealing circuit is open, further judges that the star sealing module is abnormal and sends a fault signal to the control system, and the control system prohibits the elevator equipment from running; when the current value I in the loop is larger than the threshold value Y, the main controller judges that the star sealing circuit is closed and the star sealing circuit is normal; the detection method can effectively, quickly and accurately detect the operation condition and the wiring condition of the satellite sealing module by conducting the corresponding circuit and detecting the current value in the circuit; when the satellite sealing module is judged to be abnormal, maintenance personnel are arranged to go to the site in time for maintenance and repair, the fault of the satellite sealing module is repaired, and the elevator equipment is ensured to be put into use again as soon as possible.
Drawings
Fig. 1 is a circuit diagram of the connection of an elevator star state detection device and an elevator device in the first embodiment of the invention.
Fig. 2 is a partial circuit diagram illustrating the closing of the first detection switch and the second detection switch during the detection process according to the first embodiment of the present invention.
Fig. 3 is a partial circuit diagram illustrating the closing of the first detection switch and the third detection switch during the detection process according to the first embodiment of the present invention.
Fig. 4 is a partial circuit diagram illustrating the closing of the second detection switch and the third detection switch during the detection process according to the first embodiment of the present invention.
Fig. 5 is a detection flow chart in the first embodiment of the present invention.
Fig. 6 is a circuit diagram of the connection of the elevator star state detection device and the elevator equipment in the second embodiment of the invention.
Fig. 7 is a partial circuit diagram illustrating the closing of the first detection switch and the second detection switch during the detection process according to the second embodiment of the present invention.
Fig. 8 is a partial circuit diagram illustrating the closing of the first detection switch and the third detection switch during the detection process according to the second embodiment of the present invention.
Fig. 9 is a partial circuit diagram illustrating the closing of the second detection switch and the third detection switch during the detection process according to the second embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
First embodiment
Referring to fig. 1-5, the elevator star shape state detection device 100 according to the present embodiment includes,
the power supply system comprises a power supply module 1, wherein the input end of the power supply module 1 is electrically connected with a power supply terminal so as to input an AC220V single-phase power supply to the power supply module 1, and the power supply terminal in the embodiment is an external power grid;
the output end of the power supply module 1 is electrically connected with the main controller 2 so as to supply electric energy to the main controller 2; the master controller 2 sends a fault signal and a normal signal (i.e., a detection result) to the control system 4 on the elevator apparatus;
the output end of the power supply module 1 is electrically connected with the detection unit 3 so as to supply electric energy to the detection unit 3; the detection unit 3 is electrically connected with a star sealing module 8 on the elevator equipment; the main controller 2 is connected with the detection unit 3, the detection unit 3 sends a detection signal to the main controller 2, and the main controller 2 sends a control signal to the detection unit 3 so as to guide the detection unit 3 to complete detection work;
the star sealing module 8 in the embodiment comprises more than one group of star sealing circuits, the star sealing circuits are electrically connected with the motor winding on the tractor 5, when the more than one group of star sealing circuits are closed, the elevator equipment enters a star sealing state, the motor winding can generate electric energy in the star sealing state, and the closed star sealing module 8 returns the electric energy to the motor winding, so that the rotating speed of a motor shaft is inhibited, and the effect of controlling the tractor 5 to rotate in an accelerating manner is achieved; the traction machine 5 is a power source for lifting the lift car and is electrically connected with a power supply terminal through a power supply circuit 6, a steel wire traction rope is wound on a motor shaft of the traction machine 5, two ends of the steel wire traction rope are respectively connected with the lift car and a counterweight, and a control system controls whether the traction machine 5 works or not; the detection unit 3 comprises more than one group of detection switches which correspond to the star sealing circuits one by one, and the detection switches are electrically connected with the corresponding star sealing circuits; the traction machine 5 is electrically connected with a power supply circuit 6 to obtain electric energy required for work.
The elevator star-sealing state detection device 100 is a device which is independently arranged relative to elevator equipment, can effectively detect the running condition and the wiring condition of the star-sealing module 8, and ensures that the star-sealing module 8 normally and effectively runs; because the elevator star state detection device 100 is arranged independently, the device can be additionally arranged on the existing elevator equipment on the market, and the device has good universality, strong adaptability and low use cost.
Further, the power supply module 1 includes a frequency conversion circuit 101 for converting a power grid single-phase ac power supply into a low-voltage variable-frequency ac power supply (or into a low-voltage dc power supply, in addition, and outputting the low-voltage variable-frequency ac power supply (or the low-voltage dc power supply); the input end of the frequency conversion circuit 101 is electrically connected with a power supply terminal, the output end of the frequency conversion circuit 101 is electrically connected with the main controller 2 and the detection switch, namely, the power supply module 1 inputs a low-voltage variable-frequency alternating-current power supply to the main controller 2 and the detection unit 3.
Furthermore, a power supply switch 10 is arranged on the power supply circuit 6, the star sealing module 8 is electrically connected between the power supply switch 10 and the traction machine 5, and the control system 4 controls the power supply switch 10 to be opened or closed, so as to control whether the traction machine 5 works or not.
Further, a detection signal output unit 9 is arranged between the master controller 2 and the control system 4, and the master controller 2 sends a fault signal and a normal signal to the control system 4 through the detection signal output unit 9. In this embodiment, the detection signal output unit 9 is a relay; when the detection result is a star-sealed state fault (namely the main controller 2 sends a fault signal to the control system 4), the relay contact is disconnected; when the star-sealed state is normal (namely the main controller 2 sends a normal signal to the control system 4), the relay contact is closed.
Referring to fig. 2 to 5, the method for detecting the star-sealed state of the elevator according to the embodiment includes:
(1) the detection unit 3 detects the power supply state of the power supply circuit 6, namely whether voltage and current exist on the power supply circuit 6 or not is detected;
(2) when the power supply circuit 6 is changed from power on to power off, the main controller 2 judges that the power supply terminal stops supplying power, and then the main controller 2 controls the detection switch to be closed according to a set detection program so as to input a low-voltage variable-frequency alternating-current power supply to the star-closing circuit and detect a current value I in a detection switch loop;
(3) when the current value I in the loop is less than or equal to the threshold value Y, the low-voltage variable frequency power supply input to the star-sealing circuit flows into the motor winding to obtain smaller current, the main controller 2 judges that the star-sealing circuit is broken, and then judges that the star-sealing module 8 is abnormal and sends a fault signal to the control system 4, and the control system 4 prohibits the elevator equipment from running; when the current value I in the loop is larger than the threshold value Y, the low-voltage variable frequency power supply input to the star sealing circuit generates large current through short circuit of a closed contact in the star sealing circuit, and the main controller 2 judges that the star sealing circuit is closed and the star sealing circuit is normal.
The detection method can effectively, quickly and accurately detect the running condition and the wiring condition of the satellite sealing module 8 by conducting the corresponding circuit and detecting the current value in the circuit; when the satellite sealing module is judged to be abnormal, corresponding danger elimination measures are taken in time to ensure the use safety of the elevator equipment. It should be noted that: the threshold value Y is a variable value, namely, the current value corresponding to the threshold value Y can be set on site according to the actual parameters of the traction machine 5; alternatively, the minimum current value when the star circuit is closed is used as the threshold value Y, and if the minimum current value is smaller than the minimum current value (threshold value Y), the star circuit is open.
Further, the star sealing circuit comprises a first star sealing circuit 81, a second star sealing circuit 82 and a third star sealing circuit 83, and the detection switch comprises a first detection switch 31 electrically connected with the first star sealing circuit 81, a second detection switch 32 electrically connected with the second star sealing circuit 82 and a third detection switch 33 electrically connected with the third star sealing circuit 83; the connection point of the first star circuit 81 and the power supply circuit 6 is a, the connection point of the second star circuit 82 and the power supply circuit 6 is B, and the connection point of the third star circuit 83 and the power supply circuit 6 is C;
referring to fig. 2, the step (2) is specifically: when the power supply circuit 6 is not powered, namely the connection point a, the connection point B and the connection point C have no power supply signal, the main controller 2 controls the first detection switch 31 and the second detection switch 32 to be closed, and inputs a low-voltage variable-frequency alternating-current power supply to the connection point a and the connection point B respectively to detect a first current value I1 in loops of the first detection switch 31 and the second detection switch 32;
when the first current value I1 is smaller than or equal to the threshold value Y, the main controller 2 judges that the first star circuit 81 and/or the second star circuit 82 are broken, the main controller 2 sends a fault signal to the control system 4, and the control system 4 prohibits the elevator equipment from running;
the step (3) is specifically as follows: when the first current value I1 is greater than the threshold value Y, it indicates that the first star circuit 81 and the second star circuit 82 are normally closed respectively; referring to fig. 3, subsequently, the master controller controls the first detection switch 31 and the third detection switch 33 to be closed, controls the second detection switch 32 to be opened, and inputs a low-voltage variable-frequency alternating-current power supply to the first star circuit 81 and the third star circuit 83, respectively, to detect a second current value I2 in the loops of the first detection switch 31 and the third detection switch 33; or, referring to fig. 4, the master controller controls the second detection switch 32 and the third detection switch 33 to be closed, controls the first detection switch 31 to be opened, inputs the low-voltage variable-frequency ac power to the second star circuit 82 and the third star circuit 83, respectively, and detects a third current value I3 in the loops of the second detection switch 32 and the third detection switch 33;
when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, the main controller 2 judges that the third star-closing circuit 83 is broken, the main controller 2 sends a fault signal to the control system 4, and the control system 4 prohibits the elevator equipment from running;
when the second current value I2 or the third current value I3 is greater than the threshold value Y, it indicates that the third detection switch 33 is normally closed, and it is determined that the star sealing module 8 normally operates.
The elevator star state detection device 100 performs the above-described detection task each time the power supply circuit 6 changes from powered to non-powered.
Further, a first satellite sealing switch is arranged on the first satellite sealing circuit 81, a second satellite sealing switch is arranged on the second satellite sealing circuit 82, and a third satellite sealing switch is arranged on the third satellite sealing circuit 83; in the star-sealing state, the first star-sealing switch, the second star-sealing switch and the third star-sealing switch are closed;
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first star circuit 81 and/or the second star circuit 82 are open, specifically: when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite sealing switch and/or the second satellite sealing switch is not closed, that is, the first satellite sealing switch and/or the second satellite sealing switch is opened between A1 and A2 and/or the second satellite sealing switch and B1 and B2, or the first satellite sealing switch and the power supply circuit 6 are opened, that is, the first satellite sealing switch and the second satellite sealing switch are opened, or the second satellite sealing switch and the power supply circuit 6 are opened, that is, the second satellite sealing switch and B1 are opened;
when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third star circuit 83 is open, specifically: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third satellite switch is not closed, i.e., the circuit between C1 and C2 is opened, or the circuit between the first satellite switch and the third satellite switch is opened, i.e., the circuit between A2 and C2 is opened, or the circuit between the second satellite switch and the third satellite switch is opened, i.e., the circuit between B2 and C2 is opened, or the circuit between the third satellite switch and the power supply circuit 6 is opened, i.e., the circuit between C and C1 is opened.
The specific fault can be judged by the detection method, so that maintenance personnel can carry out maintenance and overhaul with pertinence.
Further, the main controller detects the power supply state of the power supply circuit 6 through the detection unit 3; when the power supply circuit 6 is changed from power to no power, the main controller 2 controls the detection switch to be closed specifically as follows: after 2 seconds of delay, the master controller 2 starts to control the detection switch to be closed.
Further, when the control system 4 prohibits the elevator equipment from running due to the abnormality of the satellite sealing module 8, the control system 4 sends a maintenance and overhaul instruction to the cloud server 7, and the cloud server 7 issues a maintenance and overhaul task to maintenance personnel; when the maintenance personnel finish the maintenance and repair task, relevant signals are sent to the cloud server 7, and the cloud server 7 archives and archives the maintenance and repair condition. When the star sealing module 8 is abnormal, the cloud server 7 can timely arrange maintenance personnel to go to the site for maintenance and repair, repair the fault of the star sealing module 8 and ensure that the elevator equipment is put into use again as soon as possible.
Second embodiment
Referring to fig. 6, the elevator star shape state detecting device 100 according to the present embodiment is different from the first embodiment in that: a first star sealing switch is arranged on the first star sealing circuit 81, the second star sealing circuit 82 is normally open, and a third star sealing switch is arranged on the third star sealing circuit 83; and in the star-sealed state, the first star-sealed switch and the third star-sealed switch are closed.
Referring to fig. 7 to 9, the detection method according to the present embodiment differs from the first embodiment in that:
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first star circuit 81 and/or the second star circuit 82 are open, specifically: when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite closing switch is not closed, that is, the first satellite closing switch is opened between A1 and A2, or the first satellite closing switch is opened from the power supply circuit 6, that is, the first satellite closing switch is opened from A1, or the first satellite closing switch is opened from the second satellite closing circuit 82, that is, the first satellite closing switch is opened from A2 to B2, or the second satellite closing circuit 82 is opened from the power supply circuit 6, that is, the second satellite closing switch is opened from B1 or B2;
when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third satellite sealing circuit 83 is open, specifically: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third star switch is not closed, that is, between C1 and C2 is opened, or the circuit between the first star switch and the third star switch is opened, that is, between A2 and C2 is opened, or the circuit between the second star circuit 82 and the third star switch is opened, that is, between B2 and C2 is opened, or the circuit between the third star switch and the power supply circuit 6 is opened, that is, between C and C1 is opened.
Other parts not described above are substantially the same as those of the first embodiment, and are not explained in detail here.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An elevator star-sealed state detection method is realized, and an elevator star-sealed state detection device for realizing the elevator star-sealed state detection method comprises the following steps:
the power supply system comprises a power supply module (1), wherein the input end of the power supply module (1) is electrically connected with a power supply terminal;
the output end of the power supply module (1) is electrically connected with the master controller (2);
the output end of the power supply module (1) is electrically connected with the detection unit (3), and the detection unit (3) is electrically connected with a star sealing module (8) on the elevator equipment; the detection unit (3) sends a detection signal to the main controller (2), and the main controller (2) sends a control signal to the detection unit (3);
the star sealing module (8) comprises more than one group of star sealing circuits, the star sealing circuits are electrically connected with a motor winding on the tractor (5), and more than one group of star sealing circuits are closed to enter a star sealing state; the detection unit (3) comprises more than one group of detection switches which are in one-to-one correspondence with the star sealing circuits, and the detection switches are electrically connected with the corresponding star sealing circuits; the traction machine (5) is electrically connected with a power supply circuit (6);
the method is characterized in that: the elevator star-sealing state detection method comprises the following steps:
(1) the detection unit (3) detects the power supply state of the power supply circuit (6);
(2) when the power supply circuit (6) is changed from power on to power off, the main controller (2) controls the detection switch to be closed so as to input a power supply to the star-closing circuit and detect a current value I in a detection switch loop;
(3) when the current value I in the loop is smaller than or equal to the threshold value Y, the main controller (2) judges that the star-sealing circuit is open, further judges that the star-sealing module (8) is abnormal and sends a fault signal to the control system (4), and the control system (4) prohibits the elevator equipment from running; when the current value I in the loop is larger than the threshold value Y, the main controller (2) judges that the star sealing circuit is closed, the star sealing circuit is normal, and the main controller (2) sends a normal signal to the control system (4);
the star sealing circuit comprises a first star sealing circuit (81), a second star sealing circuit (82) and a third star sealing circuit (83), and the detection switch comprises a first detection switch (31) electrically connected with the first star sealing circuit (81), a second detection switch (32) electrically connected with the second star sealing circuit (82) and a third detection switch (33) electrically connected with the third star sealing circuit (83);
the step (2) is specifically as follows: when the power supply circuit (6) is power-free, the main controller (2) controls the first detection switch (31) and the second detection switch (32) to be closed, and detects a first current value I1 in a loop of the first detection switch (31) and the second detection switch (32);
when the first current value I1 is smaller than or equal to the threshold value Y, the first star circuit (81) and/or the second star circuit (82) are/is judged to be broken, the main controller (2) sends a fault signal to the control system (4), and the control system (4) prohibits the elevator equipment from operating;
the step (3) is specifically as follows: when the first current value I1 is larger than a threshold value Y, the main controller controls the first detection switch (31) and the third detection switch (33) to be closed, controls the second detection switch (32) to be opened, and detects a second current value I2 in a loop of the first detection switch (31) and the third detection switch (33); or the master controller controls the second detection switch (32) and the third detection switch (33) to be closed, controls the first detection switch (31) to be opened, and detects a third current value I3 in a loop of the second detection switch (32) and the third detection switch (33);
when the second current value I2 or the third current value I3 is smaller than or equal to the threshold value Y, the third star circuit (83) is judged to be broken, the main controller (2) sends a fault signal to the control system (4), and the control system (4) prohibits the elevator equipment from operating;
and when the second current value I2 or the third current value I3 is larger than the threshold value Y, judging that the star sealing module (8) normally operates.
2. The elevator star shape state detection method according to claim 1, characterized in that: the power supply module (1) comprises a frequency conversion circuit (101) for converting a power supply and outputting a low-voltage frequency conversion alternating current power supply; the input end of the frequency conversion circuit (101) is electrically connected with the power supply terminal, and the output end of the frequency conversion circuit (101) is electrically connected with the main controller (2) and the detection switch; a detection signal output unit (9) is arranged between the main controller (2) and the control system (4), and the main controller (2) sends a fault signal and a normal signal to the control system (4) through the detection signal output unit (9).
3. The elevator star shape state detection method according to claim 1, characterized in that: a first star sealing switch is arranged on the first star sealing circuit (81), a second star sealing switch is arranged on the second star sealing circuit (82), and a third star sealing switch is arranged on the third star sealing circuit (83); in a star closing state, the first star closing switch, the second star closing switch and the third star closing switch are closed;
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite sealing circuit (81) and/or the second satellite sealing circuit (82) are/is open, specifically: when the first current value I1 is smaller than or equal to a threshold value Y, the first satellite sealing switch and/or the second satellite sealing switch are/is judged not to be closed, or a circuit between the first satellite sealing switch and the power supply circuit (6) is opened, or a circuit between the first satellite sealing switch and the second satellite sealing switch is opened, or a circuit between the second satellite sealing switch and the power supply circuit (6) is opened.
4. The elevator star shape state detection method according to claim 3, characterized in that: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third star sealing circuit (83) is open, specifically: when the second current value I2 or the third current value I3 is smaller than or equal to the threshold value Y, the third star sealing switch is judged not to be closed, or the circuit between the first star sealing switch and the third star sealing switch is disconnected, or the circuit between the second star sealing switch and the third star sealing switch is disconnected, or the circuit between the third star sealing switch and the power supply circuit (6) is disconnected.
5. The elevator star shape state detection method according to claim 1, characterized in that: a first star sealing switch is arranged on the first star sealing circuit (81), the second star sealing circuit (82) is normally open, and a third star sealing switch is arranged on the third star sealing circuit (83); in a sealed star state, the first sealed star switch and the third sealed star switch are closed;
when the first current value I1 is less than or equal to the threshold value Y, it is determined that the first satellite sealing circuit (81) and/or the second satellite sealing circuit (82) are open, specifically: when the first current value I1 is smaller than or equal to the threshold value Y, the first satellite sealing switch is judged not to be closed, or a circuit between the first satellite sealing switch and the power supply circuit (6) is disconnected, or a circuit between the first satellite sealing switch and the second satellite sealing circuit (82) is disconnected, or the second satellite sealing circuit (82) is disconnected with the power supply circuit (6).
6. The method for detecting the star-sealed state of the elevator according to claim 5, characterized in that: when the second current value I2 or the third current value I3 is less than or equal to the threshold value Y, it is determined that the third star sealing circuit (83) is open, specifically: when the second current value I2 or the third current value I3 is smaller than or equal to the threshold value Y, the third satellite sealing switch is judged not to be closed, or the circuit between the first satellite sealing switch and the third satellite sealing switch is disconnected, or the circuit between the second satellite sealing circuit (82) and the third satellite sealing switch is disconnected, or the circuit between the third satellite sealing switch and the power supply circuit (6) is disconnected.
7. The method for detecting the star-sealed state of the elevator according to claim 1, characterized in that: the main controller detects the power supply state of the power supply circuit (6) through the detection unit (3); when the power supply circuit (6) is changed from power on to power off, the main controller (2) controls the detection switch to be closed specifically as follows: after delaying for n seconds, the main controller (2) controls the detection switch to be closed; n is more than or equal to 1.
8. The elevator star shape state detection method according to claim 1, characterized in that: when the control system (4) prohibits the elevator equipment from running due to the abnormality of the satellite sealing module (8), the control system (4) sends a maintenance and overhaul instruction to the cloud server (7), and the cloud server (7) issues a maintenance and overhaul task to maintenance personnel; when the maintenance personnel finish maintenance and repair tasks, relevant signals are sent to the cloud server (7), and the cloud server (7) builds files and archives the maintenance and repair conditions.
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| CN202210829012.XA CN115009949B (en) | 2022-07-15 | 2022-07-15 | Elevator star-sealing state detection method |
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| CN202210829012.XA CN115009949B (en) | 2022-07-15 | 2022-07-15 | Elevator star-sealing state detection method |
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| CN103376409A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Method and circuit for detecting phase loss of three-phase motor |
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| CN111675063A (en) * | 2020-07-07 | 2020-09-18 | 广东卓梅尼技术股份有限公司 | Elevator traction machine fault determination method and system based on current monitoring technology |
| CN114415007A (en) * | 2021-12-29 | 2022-04-29 | 沈阳远大智能工业集团股份有限公司 | Detection method and device for star-sealed contactor for elevator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103376409A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Method and circuit for detecting phase loss of three-phase motor |
| CN109975646A (en) * | 2019-04-24 | 2019-07-05 | 重庆理工大学 | A kind of motor winding open circuit On-line self-diagnosis method of wye connection |
| CN111610468A (en) * | 2020-05-30 | 2020-09-01 | 中化二建集团有限公司 | Star-delta starting main loop wiring detection method |
| CN111675063A (en) * | 2020-07-07 | 2020-09-18 | 广东卓梅尼技术股份有限公司 | Elevator traction machine fault determination method and system based on current monitoring technology |
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