CN111532925B - Elevator power supply protection method - Google Patents
Elevator power supply protection method Download PDFInfo
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- CN111532925B CN111532925B CN202010226827.XA CN202010226827A CN111532925B CN 111532925 B CN111532925 B CN 111532925B CN 202010226827 A CN202010226827 A CN 202010226827A CN 111532925 B CN111532925 B CN 111532925B
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/033—Details with several disconnections in a preferential order, e.g. following priority of the users, load repartition
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/07—Details with automatic reconnection and with permanent disconnection after a predetermined number of reconnection cycles
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Abstract
The application relates to an elevator power supply protection method, which divides an elevator power supply into a first level power supply and a second level power supply, wherein the first level power supply is higher in importance level than the second level power supply. And detecting the output state of the first-level power supply and the output state of the second-level power supply, cutting off the first-level power supply with abnormal output state and/or the second-level power supply with abnormal output state according to the output state of the first-level power supply and the output state of the second-level power supply, and starting processing responses of different levels. Therefore, according to the elevator power supply protection method, when the output abnormality exists in a certain level of power supply, only the level of power supply with the output abnormality is cut off, corresponding processing response is started, and the processing response with different levels is adopted according to different output abnormality conditions, so that the output of the elevator power supply is prevented from being directly stopped when the output abnormality occurs, and the elevator emergency stop trapping probability is reduced.
Description
Technical Field
The application relates to the technical field of elevators, in particular to an elevator power supply protection method.
Background
In the traditional technical scheme, power supplies of an elevator system are all multiplexed output power supplies and have the overcurrent and overvoltage protection function. When the power supply of the elevator system detects that a certain level of voltage is over-current and over-voltage, the elevator system enters a protection mode, output is stopped, and the elevator can be emergently braked and stops running.
However, with the increase of the use of the electrical devices of the elevator system, the power output abnormality of the elevator system is easily triggered, so that the power protection is caused, and the probability of people trapping of the elevator is increased.
Disclosure of Invention
Therefore, it is necessary to provide a power protection method for an elevator, aiming at the problem that power protection is caused by abnormal power output of an elevator system, and further the probability of people trapping of the elevator is increased.
The application provides an elevator power supply protection method, which comprises the following steps:
dividing an elevator power supply into a first level power supply and a second level power supply, wherein the first level power supply is higher in importance level than the second level power supply;
detecting an output state of the first level power supply and an output state of the second level power supply;
and according to the output state of the first-level power supply and the output state of the second-level power supply, cutting off the output of the first-level power supply with abnormal output state and/or the output of the second-level power supply with abnormal output state, and starting processing responses of different levels.
In one embodiment, the first class power supply is a core power supply, which includes a power supply that powers a main control board, a converter driver board, a safety electronics board, and/or a motor current sensor.
In one embodiment, the second-level power supply is a common power supply, and the common power supply comprises a power supply for supplying power to an input/output board, an expansion electronic board, an outside-hall call board and/or an inside-car control board.
In one embodiment, the cutting off the output of the first-stage power supply with abnormal output state and/or the output of the second-stage power supply with abnormal output state and starting different levels of processing response according to the output state of the first-stage power supply and the output state of the second-stage power supply comprises:
judging whether the first-level power supply and/or the second-level power supply have abnormal output or not;
if the abnormal output of the first-level power supply is judged, the output of the first-level power supply is cut off, and a second-level processing response is started;
if the abnormal output of the second-level power supply is judged, the output of the second-level power supply is cut off, and a third-level processing response is started;
and if the second-level power supply and the first-level power supply are judged to have abnormal output at the same time, cutting off the output of the second-level power supply and the output of the first-level power supply, and starting first-level processing response.
In one embodiment, cutting off the output of the first class power supply comprises:
and cutting off the output of the first-level power supply by adopting one of a relay, a metal-oxide semiconductor field effect transistor and an insulated gate bipolar transistor.
In one of the embodiments, the first and second electrodes are,
initiating the second level processing response, comprising:
controlling elevator emergency braking to bring the elevator into a safe state;
generating and outputting a first-grade power supply abnormal signal to a main control panel of the elevator;
initiating the third level processing response comprising:
controlling the elevator to be close to a flat floor and opening the elevator door;
controlling the elevator to stop responding to external calls and/or internal calls;
and generating and outputting a second-level power supply abnormal signal to a main control panel of the elevator.
In one embodiment, initiating the first-level processing response comprises:
controlling elevator emergency braking to bring the elevator into a safe state;
and generating and outputting a first-level power supply abnormal signal and a second-level power supply abnormal signal to a main control panel of the elevator.
In one embodiment, the elevator power protection method further comprises:
after the second-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of a main control panel of the elevator or not;
if the first-level power supply which is abnormally output is not the power supply of the main control board, the first-level power supply is put into the main control board again at preset intervals;
judging whether the first-level power supply is restarted successfully or not;
if the first-level power supply is judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of switching in the first-level power supply again at the preset time interval until the preset restart times are met.
In one embodiment, the elevator power protection method further comprises:
after the third-level processing response is started, switching on the second-level power supply again at preset time intervals;
judging whether the second-level power supply is restarted successfully or not;
if the second-level power supply is judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of switching in the second-level power supply again at the preset time interval until the preset restart times are met.
In one embodiment, the elevator power protection method further comprises:
after the third-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of a main control panel of the elevator or not;
if the first-level power supply which is abnormally output is not the power supply of the main control board, the first-level power supply is put into the main control board again at preset intervals;
switching on the second-level power supply again at preset intervals;
judging whether the first-level power supply and the second-level power supply are restarted successfully or not;
if the first-level power supply and the second-level power supply are judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of putting the first-level power supply and the second-level power supply again at the preset time interval until the preset restart times are met.
According to the elevator power supply protection method, the elevator power supply is divided into the first-level power supply and the second-level power supply, and the importance level of the first-level power supply is higher than that of the second-level power supply. And detecting the output state of the first-level power supply and the output state of the second-level power supply, cutting off the first-level power supply with abnormal output state and/or the second-level power supply with abnormal output state according to the output state of the first-level power supply and the output state of the second-level power supply, and starting processing responses of different levels. Therefore, according to the elevator power supply protection method, when the output abnormality exists in a certain level of power supply, only the level of power supply with the output abnormality is cut off, corresponding processing response is started, and the processing response with different levels is adopted according to different output abnormality conditions, so that the output of the elevator power supply is prevented from being directly stopped when the output abnormality occurs, and the elevator emergency stop trapping probability is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a method for protecting an elevator power supply according to an embodiment of the present application;
fig. 2 is a block diagram of an elevator power supply structure provided in an embodiment of the present application;
fig. 3 is another elevator power protection method provided by the embodiment of the application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present application provides a power protection method for an elevator, including:
step S10, dividing the elevator power supply into a first level power supply and a second level power supply, wherein the importance level of the first level power supply is higher than that of the second level power supply;
step S20, detecting the output state of the first level power supply and the output state of the second level power supply;
step S30 is to cut off the output of the first-stage power supply with abnormal output state and/or the output of the second-stage power supply with abnormal output state according to the output state of the first-stage power supply and the output state of the second-stage power supply, and to start processing responses of different levels.
Referring to fig. 2 together, the elevator power protection method can be applied to the elevator power supply of fig. 2. The elevator power supply can comprise an Electromagnetic Interference (EMI) circuit, an overvoltage protection and surge suppression circuit, a phase sequence detection circuit, an instant stop detection circuit, a multi-path power supply output circuit, a current and voltage sampling circuit, a main chip and a fault signal output circuit. It can be understood that the circuit described above in this application does not limit the hardware that can be used in this application, as long as it can implement the elevator power protection method provided in this application.
The EMI circuit can be connected with an input end of an alternating current power supply, and is used for filtering interference of external power grid high-frequency pulses to an elevator power supply and reducing electromagnetic interference to the outside during switching of the elevator power supply. The overvoltage protection and surge suppression circuit can be connected with an input end of an alternating current power supply and is used for performing overvoltage protection on the elevator power supply, preventing input voltage from exceeding the input range of the power supply and controlling surge current generated when the elevator power supply is powered on within an allowable range. The phase sequence detection circuit and the instantaneous stop detection circuit can be connected with the input end of the alternating current power supply, wherein the phase sequence detection circuit is used for detecting the phase of the three-phase power supply, and the instantaneous stop detection circuit is used for detecting whether the condition that the power grid stops inputting instantaneously occurs or not. And the multi-path power supply output circuit is connected with a module consisting of the EMI circuit and the overvoltage protection and surge suppression circuit and is used for converting the power supply of the power grid into the required multi-path power supply to be output.
The current and voltage sampling circuit can sample the voltage and the current of the first-level power supply and the second-level power supply, and the sampling result can be used for judging whether the elevator power supply has an overcurrent or overvoltage phenomenon. The main chip is connected with the current and voltage sampling circuit and used for receiving a current and voltage detection signal transmitted by the current and voltage sampling circuit, judging whether the first-level power supply and the second-level power supply have an over-current and over-voltage phenomenon or not according to the current and voltage detection signal, if the first-level power supply and/or the second-level power supply have the over-current and over-voltage phenomenon, generating a corresponding control signal, cutting off the first-level power supply with abnormal output state and/or the second-level power supply with abnormal output state, and starting processing responses of different levels. In one embodiment, the different levels of processing response may be switching of control switches that control the first level power supply and/or the second level power supply in the presence of over-current and over-voltage phenomena.
In step S10, since the multi-path power output circuit in the elevator power supply can output voltages of a plurality of levels, the elevator power supply can be divided into a first-level power supply and a second-level power supply according to the elevator power supply corresponding to the output voltages of the plurality of levels, and the division can be based on the importance of the elevator power supply. Of course, the elevator power supply can be divided into a plurality of grades according to actual needs, the elevator power supply is not particularly limited in this application, and measures after abnormal power supply output is judged can be adjusted correspondingly. In one embodiment, the output voltage levels may include voltages of 5V, 15V, -15V, 24V, 48V, and so on. For example, the power source of the elevator corresponding to 5V may be divided into a first class power source and a second class power source, and the first class power source may be more important than the second class power source.
In one embodiment, the first class power supply is a core power supply that includes a power supply that powers the main control board, the inverter driver board, the safety electronics board, and/or the motor current sensor. The core power supply may further include other important power supplies for supplying power to the safety loop or the safety component, which may be specifically set according to the actual needs of the elevator operation, and this is not specifically limited in this application. In one embodiment, the second-level power supply is a common power supply, and the common power supply comprises a power supply for supplying power to the input/output board, the expansion electronic board, the hall calling board and/or the car interior control board. The common power supply can also comprise a power supply for supplying power to non-core components such as a station announcement clock, a monitoring screen, an axial flow fan, a weighing sensor, a seismic sensor or a debugging tool in the elevator, and the common power supply can be specifically set according to the actual operation needs of the elevator, and the common power supply is not specifically limited in this application.
In steps S20 and S30, the voltage and current of the first and second power supplies may be sampled separately by using a current-voltage sampling circuit, that is, the current and voltage sampling process of the first power supply and the current and voltage sampling process of the second power supply are not interfered by each other. Since the number of power supplies is large and the number of power supplies having a failure is not fixed in the elevator power supply system, in this embodiment, there may be failure situations: the first-level power supply has an overcurrent and overvoltage output state, the second-level power supply has an overcurrent and overvoltage output state, and the first-level power supply and the second-level power supply both have overcurrent and overvoltage output states. Therefore, it is possible to cut off the output of the first-stage power supply having an abnormal output state and/or the output of the second-stage power supply having an abnormal output state, and to start a processing response of a different level, in accordance with the output state of the first-stage power supply and the output state of the second-stage power supply.
It can be understood that the main chip may judge the above-mentioned fault condition according to the current-voltage detection signals of the first-level power supply and the second-level power supply transmitted by the current-voltage sampling circuit, select the first-level power supply and/or the second-level power supply that needs to be cut off according to the judged fault condition, and start different levels of processing responses. It can be understood that the first-level power supply with abnormal output state and/or the second-level power supply with abnormal output state are cut off and processing response with different levels is started according to the output state of the first-level power supply and the output state of the second-level power supply, so that the situation that the output of all elevator power supplies is directly stopped for emergency braking when only a certain or part of elevator power supplies are abnormal in output can be avoided, and the probability of elevator people trapping is reduced.
In summary, according to the elevator power protection method provided by the application, the elevator power is divided into the first-level power and the second-level power, and the importance level of the first-level power is higher than that of the second-level power. And detecting the output state of the first-level power supply and the output state of the second-level power supply, cutting off the first-level power supply with abnormal output state and/or the second-level power supply with abnormal output state according to the output state of the first-level power supply and the output state of the second-level power supply, and starting processing responses of different levels. Therefore, according to the elevator power supply protection method, when the output abnormality exists in a certain level of power supply, only the level of power supply with the output abnormality is cut off, corresponding processing response is started, and the processing response with different levels is adopted according to different output abnormality conditions, so that the output of the elevator power supply is prevented from being directly stopped when the output abnormality occurs, and the elevator emergency stop trapping probability is reduced.
In one embodiment, according to the output state of the first-level power supply and the output state of the second-level power supply, cutting off the output of the first-level power supply with abnormal output state and/or cutting off the output of the second-level power supply with abnormal output state, and starting different levels of processing response, comprises: judging whether the first-level power supply and/or the second-level power supply have abnormal output or not; if the abnormal output of the first-level power supply is judged, the output of the first-level power supply is cut off, and a second-level processing response is started; if the abnormal output of the second-level power supply is judged, the output of the second-level power supply is cut off, and a third-level processing response is started; and if the second-level power supply and the first-level power supply are judged to have abnormal output at the same time, cutting off the output of the second-level power supply and the output of the first-level power supply, and starting first-level processing response.
In this embodiment, since the same level voltage of the power output from the multi-channel power output circuit can be divided into the first level power output and the second level power output, when the main chip detects that there is an abnormal output (overvoltage or overcurrent) in a certain level power, the main chip can be divided into the first level processing response, the second level processing response, and the third level processing response. It will be appreciated that since the first stage power source is of a higher priority than the second stage power source, a third stage process response is initiated when an anomalous output is detected from the second stage power source only, a second stage process response is initiated when an anomalous output is detected from the first stage power source only, and a first stage process response is initiated when an anomalous output is detected from both the first stage power source and the second stage power source. In this embodiment, the first level processing response and the second level processing response may be elevator emergency braking to enable the elevator to enter a safe state, and the third level processing response may be closing and opening the elevator door, so that the elevator safety is ensured and the probability of elevator trapping is reduced. Therefore, according to the difference of the level power supply with abnormal output, the processing response of different levels is adopted, the situation that all power supply output is interrupted due to a certain power supply fault in the traditional scheme to cause the emergency braking of the elevator can be avoided, and the probability of people trapping of the elevator can be reduced.
In one embodiment, initiating a second level of processing response comprises: controlling emergency braking of the elevator to bring the elevator into a safe state; and generating and outputting a first-grade power supply abnormal signal to a main control panel of the elevator. Because the first-level power supply output is abnormal, namely the core power supply output is abnormal, the elevator has potential safety hazards, the main chip can generate a second-level processing response signal and output the signal through the fault signal output circuit, so that the emergency braking of the elevator can be controlled through the device with the emergency braking function, the elevator enters a safe state, the elevator cannot be started temporarily, and the safety of passengers is ensured. In this embodiment, the output abnormality of the first-stage power supply does not affect the output of the second-stage power supply, so that the normal output of the second-stage power supply can be maintained. It can be understood that when the main chip judges that the output of the first-level power supply is abnormal, the first-level power supply abnormal signal can be generated and output to the main control panel of the elevator through the fault signal output circuit, the investigation range can be reduced when the elevator is maintained, and therefore the maintenance efficiency of workers is improved.
In one embodiment, cutting off the output of the first stage power supply comprises: the output of the first stage power supply is cut off using a relay, a metal-oxide semiconductor field effect transistor, and an insulated gate bipolar transistor or other type of control switch. It will be appreciated that one or other type of control switch, such as a relay, a metal-oxide semiconductor field effect transistor (MOS) and an Insulated Gate Bipolar Transistor (IGBT), may be used to switch off the output of the second stage power supply.
In one embodiment, initiating a third level process response comprises: controlling the elevator to be close to a flat floor and opening the elevator door; controlling the elevator to stop responding to external calls and/or internal calls; and generating and outputting a second-level power supply abnormal signal to a main control panel of the elevator. In this embodiment, the output of the first stage power supply may be maintained. Because the output of the second-level power supply is abnormal, namely the output of the common power supply is abnormal, the elevator does not have large potential safety hazard at the moment, the elevator can be controlled to be in a near flat layer, the elevator door is opened, the phenomenon that the elevator is trapped by people is avoided, and the safety of passengers is ensured. The third-stage processing response signal can be generated through the main chip and output through the fault signal output circuit, so that the elevator can be controlled to be in the near leveling range through the elevator control circuit with the elevator leveling and door opening functions, and the elevator door can be opened. In the embodiment, the output of the second-level power supply is abnormal and does not influence the output of the first-level power supply, so that the normal output of the first-level power supply can be maintained, and the elevator can be safely leveled and opened. It can be understood that when the main chip judges that the output of the second-level power supply is abnormal, the fault signal output circuit can generate and output a second-level power supply abnormal signal to the main control panel of the elevator, and the troubleshooting range can be reduced when the elevator is maintained, so that the maintenance efficiency of workers is improved.
In one embodiment, initiating a first level of processing response comprises: controlling emergency braking of the elevator to bring the elevator into a safe state; and generating and outputting a first-level power supply abnormal signal and a second-level power supply abnormal signal to a main control panel of the elevator. Because the first-level power supply and the second-level power supply output abnormally, namely the core power supply and the common power supply output abnormally, the elevator has potential safety hazards, can be controlled to be braked emergently to enter a safe state, so that the elevator cannot be started temporarily, and the safety of passengers is ensured. It can be understood that when the first-level power supply and the second-level power supply both output abnormal signals, the abnormal signals of the first-level power supply and the second-level power supply can be output to a main control panel of the elevator, and the inspection range can be reduced when the elevator is maintained, so that the maintenance efficiency of workers is improved.
It should be noted that the main chip of the elevator power supply system can generate the first-level power supply abnormal signal and/or the second-level power supply abnormal signal according to the overcurrent and overvoltage phenomenon of the first-level power supply and/or the second-level power supply, and send the first-level power supply abnormal signal and/or the second-level power supply abnormal signal to the main control panel of the elevator through the fault signal output circuit. In one embodiment, the fault signal output circuit of the elevator power supply can transmit the first-level power supply abnormal signal and/or the second-level power supply abnormal signal to the elevator main control board in an IO mode or a communication mode, and the elevator main control board can display fault code information according to the first-level power supply abnormal signal and/or the second-level power supply abnormal signal so as to remind a worker of a fault position and improve maintenance efficiency of the worker.
In one embodiment, the elevator power protection method further comprises: after the second-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of the main control panel of the elevator or not; if the first-level power supply which is abnormally output is not the power supply of the main control panel, the first-level power supply is put into the main control panel again at preset intervals; judging whether the first-level power supply is restarted successfully or not; if the first-level power supply is judged to be restarted successfully, controlling the elevator to be started; otherwise, returning to the step of switching in the first-level power supply again at preset time intervals until the preset restart times are met. In this embodiment, after the second-stage processing response is started, it is determined whether or not the first-stage power supply in which the abnormal output occurs is the power supply of the main control panel of the elevator. If the first-level power supply with abnormal output is the power supply of the main control panel of the elevator, prohibiting the first-level power supply from trying to restart and prohibiting the elevator from restarting; if the first-level power supply is not the power supply of the elevator main control panel, the first-level power supply can be switched on again by closing the control switch of the first-level power supply with abnormal output, and the elevator can be restarted after the first-level power supply is restarted successfully.
In one embodiment, the elevator power protection method further comprises: after the third-level processing response is started, switching in the second-level power supply again at preset time intervals; judging whether the second-level power supply is restarted successfully or not; if the second-level power supply is judged to be restarted successfully, controlling the elevator to be started; otherwise, returning to the step of switching in the second-level power supply again at preset time intervals until the preset restart times are met. In this embodiment, after the third-level processing response is started, the second-level power supply can be turned on again by closing the control switch of the abnormally outputted second-level power supply, and the elevator can be restarted after the restart of the second-level power supply succeeds.
In one embodiment, the elevator power protection method further comprises: after the first-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of the main control panel of the elevator or not; if the first-level power supply which is abnormally output is not the power supply of the main control panel, the first-level power supply is put into the main control panel again at preset intervals; switching into the second-level power supply again at preset intervals; judging whether the first-level power supply and the second-level power supply are restarted successfully or not; if the first-level power supply and the second-level power supply are judged to be restarted successfully, controlling the elevator to be started; otherwise, returning to the step of putting the first-level power supply and the second-level power supply again at preset time intervals until the preset restart times are met.
In the present embodiment, after the second-stage processing response is started, it is first determined whether the first-stage power supply or the second-stage power supply is the first-stage power supply or the second-stage power supply in which the abnormal output has occurred. And if the abnormal output is the first-level power supply, judging whether the first-level power supply with the abnormal output is the power supply of the main control panel of the elevator. If the first-level power supply with abnormal output is the power supply of the main control panel of the elevator, prohibiting the first-level power supply from trying to restart and prohibiting the elevator from restarting; if the first-level power supply is not the power supply of the elevator main control panel, the first-level power supply can be switched on again by controlling the control switch of the first-level power supply, and the elevator can be restarted after the first-level power supply is restarted successfully. And if the abnormal output occurs to the second-level power supply, switching on the second-level power supply again by closing the control switch of the abnormal output second-level power supply, and restarting the elevator after the second-level power supply is restarted successfully.
It should be noted that, the success of restarting the first-level power supply can be determined by detecting the current and voltage output by the first-level power supply and according to the detection result. If the current and voltage output by the first-level power supply is not abnormal, judging that the first-level power supply is successfully restarted, and trying to restart the elevator; if the current and voltage output by the first-level power supply is abnormal, the first-level power supply is judged to fail to restart, and the output of the first-level power supply is cut off again. At this time, after a preset time interval, the output of the first-level power supply may be resumed again, and the current and voltage output by the first-level power supply may be detected to determine whether the restart of the first-level power supply is successful again. If the first-level power supply is not restarted successfully for the preset times, the attempt to start the first-level power supply can be stopped, and a restart failure signal for multiple times is output, so that a worker can conveniently overhaul. In one embodiment, the preset time may be 10 minutes, and the preset number of times may be 3 times, or may be set according to actual needs. It is understood that the method for judging the restart success of the second-level power supply is the same as the method for judging the restart success of the first-level power supply.
The elevator power supply protection method provided by the application further has a power supply restarting function, and whether the output of the first-level power supply and the output of the second-level power supply with abnormal output need to be recovered or not can be judged according to the type of the elevator power supply. In one embodiment, if the output exception is the second level power supply, a restart may be attempted; if the first-level power supply is abnormal in output, whether the first-level power supply is the power supply of the elevator main control panel or not needs to be judged, if the first-level power supply is the power supply of the elevator main control panel, the first-level power supply is forbidden to try restarting, the elevator is forbidden to restart, if the first-level power supply is not the power supply of the elevator main control panel, the first-level power supply is allowed to try restarting, and the elevator can be restarted after the first-level power supply is restarted successfully. Therefore, whether the restarting can be attempted by judging the power supplies with different grades can be used for attempting the restarting of the elevator on the premise of ensuring the safe operation of the elevator, so that the probability of people trapping of the elevator is further reduced. It should be noted that the main chip may implement a corresponding power source restart mechanism according to a power supply object of the first-level power source and/or the second-level power source.
Referring to fig. 3, in one embodiment, it may be determined whether there is an over-current and over-voltage phenomenon in all elevator power supplies, and if so, it may be further determined whether the output of the second-stage power supply is over-current and over-voltage. If the second-level power supply has the output overcurrent and overvoltage phenomenon, the output of the second-level power supply is cut off, and the fault information of the second-level power supply is output to the elevator main control board. After waiting for 10 minutes, the second-level power supply can be restarted by 3 times of attempts, and if the 3 times of attempts are failed, the elevator is prohibited from being restarted; and if the second-level power supply is restarted successfully, allowing the second-level power supply to output, and allowing the elevator to start.
After the output abnormity judgment of the second-level power supply is completed, whether the output of the first-level power supply is over-current and over-voltage can be continuously judged. If the first-level power supply has the output overcurrent and overvoltage phenomenon, the output of the first-level power supply is cut off, and the fault information of the first-level power supply is output to the elevator main control board. After waiting for 10 minutes, whether the first-level power supply is the power supply of the elevator main control panel is judged, and certainly, after judging whether the first-level power supply is the power supply of the elevator main control panel, the first-level power supply can be restarted after waiting for 10 minutes. If the output voltage does not supply power to the elevator main control panel, the first-level power supply can be restarted by 3 times of attempts, and if the restarting of the 3 times of attempts fails, the elevator is prohibited from being restarted; and if the first-level power supply is restarted successfully, allowing the first-level power supply to output, and allowing the elevator to be started. If the output voltage is supplied to the main control panel, the attempt of restarting is forbidden, and the elevator is forbidden to restart. It should be noted that, in this embodiment, the order of determining whether there is an output abnormality in the first-stage power supply and the second-stage power supply is not limited.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An elevator power supply protection method is characterized by comprising the following steps:
dividing an elevator power supply into a first level power supply and a second level power supply according to the importance degree of the elevator power supply, wherein the importance level of the first level power supply is higher than that of the second level power supply;
detecting an output state of the first level power supply and an output state of the second level power supply;
and according to the output state of the first-level power supply and the output state of the second-level power supply, cutting off the output of the first-level power supply with abnormal output state and/or the output of the second-level power supply with abnormal output state, and starting processing responses of different levels.
2. The elevator power protection method of claim 1, wherein the first level power supply is a core power supply comprising a power supply that powers a main control board, a converter drive board, a safety electronics board, and/or a motor current sensor.
3. The elevator power protection method of claim 1, wherein the second level power supply is a common power supply, and the common power supply comprises a power supply for supplying power to an input/output board, an expansion electronic board, an outside-hall call board, and/or an inside-car console board.
4. The elevator power protection method according to claim 1, wherein said switching off the output of the first-stage power supply having an abnormal output state and/or the output of the second-stage power supply having an abnormal output state according to the output state of the first-stage power supply and the output state of the second-stage power supply, and initiating different levels of processing responses comprises:
judging whether the first-level power supply and/or the second-level power supply have abnormal output or not;
if the abnormal output of the first-level power supply is judged, the output of the first-level power supply is cut off, and a second-level processing response is started;
if the abnormal output of the second-level power supply is judged, the output of the second-level power supply is cut off, and a third-level processing response is started;
and if the second-level power supply and the first-level power supply are judged to have abnormal output at the same time, cutting off the output of the second-level power supply and the output of the first-level power supply, and starting first-level processing response.
5. The elevator power protection method of claim 4, wherein cutting off the output of the first level power supply comprises:
and cutting off the output of the first-level power supply by adopting one of a relay, a metal-oxide semiconductor field effect transistor and an insulated gate bipolar transistor.
6. The elevator power protection method according to claim 4,
initiating the second level processing response, comprising:
controlling elevator emergency braking to bring the elevator into a safe state;
generating and outputting a first-grade power supply abnormal signal to a main control panel of the elevator;
initiating the third level processing response comprising:
controlling the elevator to be close to a flat floor and opening the elevator door;
controlling the elevator to stop responding to external calls and/or internal calls;
and generating and outputting a second-level power supply abnormal signal to a main control panel of the elevator.
7. The elevator power protection method of claim 4, wherein initiating the first level of processing response comprises:
controlling elevator emergency braking to bring the elevator into a safe state;
and generating and outputting a first-level power supply abnormal signal and a second-level power supply abnormal signal to a main control panel of the elevator.
8. The elevator power protection method of claim 4, further comprising:
after the second-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of a main control panel of the elevator or not;
if the first-level power supply which is abnormally output is not the power supply of the main control board, the first-level power supply is put into the main control board again at preset intervals;
judging whether the first-level power supply is restarted successfully or not;
if the first-level power supply is judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of switching in the first-level power supply again at the preset time interval until the preset restart times are met.
9. The elevator power protection method of claim 4, further comprising:
after the third-stage processing response is started, switching on the second-stage power supply again at preset time intervals;
judging whether the second-level power supply is restarted successfully or not;
if the second-level power supply is judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of switching in the second-level power supply again at the preset time interval until the preset restart times are met.
10. The elevator power protection method of claim 4, further comprising:
after the first-level processing response is started, judging whether the first-level power supply with abnormal output is the power supply of a main control panel of the elevator or not;
if the first-level power supply which is abnormally output is not the power supply of the main control board, the first-level power supply is put into the main control board again at preset intervals;
switching on the second-level power supply again at preset intervals;
judging whether the first-level power supply and the second-level power supply are restarted successfully or not;
if the first-level power supply and the second-level power supply are judged to be restarted successfully, controlling the elevator to be started;
otherwise, returning to the step of putting the first-level power supply and the second-level power supply again at the preset time interval until the preset restart times are met.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655257A (en) * | 2008-08-18 | 2010-02-24 | 松下电器产业株式会社 | Electronic equipment |
| JP4515078B2 (en) * | 2003-11-18 | 2010-07-28 | 三菱電機株式会社 | Elevator control device |
| CN102135587A (en) * | 2011-01-31 | 2011-07-27 | 吕强 | Fault monitoring method and system of power line |
| JP2013203513A (en) * | 2012-03-28 | 2013-10-07 | Toshiba Elevator Co Ltd | Elevator |
| CN103370269A (en) * | 2010-12-14 | 2013-10-23 | 通力股份公司 | Interface unit, conveying system and method |
| CN106865374A (en) * | 2017-01-04 | 2017-06-20 | 广州广日电梯工业有限公司 | A kind of elevator detection means, system and detection method |
| CN109896369A (en) * | 2019-03-05 | 2019-06-18 | 日立电梯（中国）有限公司 | Building backup power equipment, control method, device and elevator device |
| CN110844732A (en) * | 2019-11-19 | 2020-02-28 | 亚洲富士电梯股份有限公司 | Intelligent monitoring management system for elevator fault testing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5623558B2 (en) * | 2013-01-11 | 2014-11-12 | 東芝エレベータ株式会社 | Elevator control device |
| CN110579720B (en) * | 2018-06-08 | 2022-08-30 | 台达电子工业股份有限公司 | Power supply monitor |
-
2020
- 2020-03-27 CN CN202010226827.XA patent/CN111532925B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4515078B2 (en) * | 2003-11-18 | 2010-07-28 | 三菱電機株式会社 | Elevator control device |
| CN101655257A (en) * | 2008-08-18 | 2010-02-24 | 松下电器产业株式会社 | Electronic equipment |
| CN103370269A (en) * | 2010-12-14 | 2013-10-23 | 通力股份公司 | Interface unit, conveying system and method |
| CN102135587A (en) * | 2011-01-31 | 2011-07-27 | 吕强 | Fault monitoring method and system of power line |
| JP2013203513A (en) * | 2012-03-28 | 2013-10-07 | Toshiba Elevator Co Ltd | Elevator |
| CN106865374A (en) * | 2017-01-04 | 2017-06-20 | 广州广日电梯工业有限公司 | A kind of elevator detection means, system and detection method |
| CN109896369A (en) * | 2019-03-05 | 2019-06-18 | 日立电梯（中国）有限公司 | Building backup power equipment, control method, device and elevator device |
| CN110844732A (en) * | 2019-11-19 | 2020-02-28 | 亚洲富士电梯股份有限公司 | Intelligent monitoring management system for elevator fault testing |
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|---|---|
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