CN212269131U - Elevator outage fault monitoring system - Google Patents
Elevator outage fault monitoring system Download PDFInfo
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- CN212269131U CN212269131U CN201922375168.1U CN201922375168U CN212269131U CN 212269131 U CN212269131 U CN 212269131U CN 201922375168 U CN201922375168 U CN 201922375168U CN 212269131 U CN212269131 U CN 212269131U
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Abstract
The utility model provides an elevator outage fault monitoring system, which belongs to the field of electrical monitoring equipment and is used for monitoring an elevator which comprises an elevator controller and a signal processing board which are connected by a canbus bus, wherein the elevator outage fault monitoring system comprises a monitoring platform and a data collector which is in signal connection with the canbus and the monitoring platform between the elevator controller and the signal processing board; the data acquisition unit comprises a photoelectric isolator, a singlechip and a wireless communication module; the photoelectric isolator, the singlechip and the wireless communication module are sequentially in signal connection. The elevator power failure fault monitoring system solves the problem that information cannot be obtained and timely disposed (urgent repair) when the conventional elevator has an elevator power failure fault; the loss caused by elevator faults is reduced, and the operation and maintenance level of the elevator is improved.
Description
Technical Field
The utility model belongs to the technical field of elevator equipment, a elevator monitoring system is related to, especially, relate to an elevator outage fault monitoring system.
Background
In recent years, with a large increase in the amount of elevator use and a continuous increase in the use time of elevators, elevator failure phenomena inevitably show an increasing trend. In the running process of the elevator, the power failure fault is inevitable, and once the elevator is abnormally powered off, the consequences of the elevator are serious, so that the monitoring of the power failure fault of the elevator is one of the problems which need to be solved urgently inside and outside the industry. Generally, the reasons for the power failure of the elevator mainly include the following aspects: (1) electrical faults, such as relay damage, converter faults, earth leakage protection faults, and the like; (2) and human factors such as the power supply of the elevator is shut down by human error. If information can not be obtained in time when the elevator power failure fault occurs, the information is not dealt with in time (urgent repair), so that the safety problem of elevator fault personnel is caused, and the operation quality of the elevator is influenced.
To solve the above technical problems, the following methods are generally adopted at present: (1) a power failure signal is taken out through a normally closed contact of the phase sequence relay JXW, and the phase sequence relay loses power when power fails; (2) the elevator is monitored whether in a power-off state or not by acquiring the logic combination of a plurality of detection signals aiming at a certain elevator through a monitoring interface of an elevator controller. However, although the first method can monitor the power failure of the elevator, the first method is difficult to judge whether the elevator is trapped after the power failure, and the like, and the first method has the defects of low stability, complex installation and the like, and is difficult to popularize and apply; the second method has the problems that different elevator types are different in monitoring signals obtained from the monitoring interfaces and difficult to popularize, and some elevator manufacturers hide fault signals of part of the monitoring interfaces, so that the accuracy of the elevator power-off warning signals extracted by the method is low, and the using effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is above-mentioned technical problem to solve to provide an elevator outage fault monitoring system and monitoring method that stability, accuracy are high, easily installation are promoted.
In order to solve the technical problem, the utility model adopts the technical scheme that:
the utility model provides an elevator outage fault monitoring system, the elevator outage fault monitoring system comprises a monitoring platform and a data acquisition unit, the elevator controller is connected with the signal processing board through a canbus bus, and the data acquisition unit is connected with the canbus bus between the elevator controller and the signal processing board and the monitoring platform through signals; the data acquisition unit comprises a photoelectric isolator, a singlechip and a wireless communication module; the photoelectric isolator, the singlechip and the wireless communication module are sequentially in signal connection.
Furthermore, the elevator controller is connected with the signal processing board through a canbus bus, one group of serial interfaces of the single chip microcomputer is connected with the canbus bus through the photoelectric isolator, and the other group of serial interfaces of the single chip microcomputer is connected with the wireless communication module.
Furthermore, the data acquisition unit further comprises a power management module, the power management module is electrically connected with the photoelectric isolator, the single chip microcomputer and the wireless communication module, and the power management module is further connected with a standby power supply.
Further, the power management module comprises a charge and discharge management unit, an LM2576 voltage stabilizing circuit and an RT8059 voltage stabilizing circuit which are connected with each other, a power supply of the elevator is connected to the charge and discharge management unit through the LM2576 voltage stabilizing circuit, the RT8059 voltage stabilizing circuit is connected to the single chip microcomputer and the wireless communication module, and the charge and discharge management unit is connected to the standby power supply.
Furthermore, the type of the single chip microcomputer is STM32L433Rx, the wireless communication module is a BC35-G NBIOT module, and the photoelectric isolator is a unidirectional photoelectric isolator.
Compared with the prior art, the technical scheme of the utility model have following advantage:
the elevator fault monitoring system of the utility model has the advantages that the data acquisition unit is connected with the elevator controller and the canbus bus of the control box or the signal processing board; the data collector extracts operation data from the canbus bus and monitors the operation condition of the elevator. The elevator power failure fault monitoring system solves the problem that information cannot be obtained in time and the information cannot be dealt with (urgent repair) in time when an elevator power failure occurs; the loss caused by elevator faults is reduced, the operation maintenance level of the elevator is improved, the installation cost is low, and the elevator is simple and practical; the data acquisition interfaces are unified, and no matter what type of elevator or elevator of the manufacturer, the data acquisition interfaces are provided with a control box and a controller; because the elevator signals are acquired through the elevator can bus, the operation data of the elevator is really acquired, and the fault signals of the elevator are logically combined by the system, so that the elevator man-trapping fault and the like are inferred, the condition that a manufacturer conceals the fault signals does not exist, and the fault judgment success rate is high.
Drawings
Fig. 1 is a connection diagram of a data collector and an elevator can bus provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a data acquisition device provided in an embodiment of the present invention;
fig. 3 is a block diagram of a power management module according to an embodiment of the present invention;
fig. 4 is a TP5400 circuit diagram provided by an embodiment of the present invention;
FIG. 5 is a simulation diagram of the LM2576 circuit;
fig. 6 is a circuit diagram of RT 8059.
Fig. 7 is a logic diagram for judging power failure of an elevator provided by the embodiment of the invention;
FIG. 8 is a graph of the formation of a man-carried signal;
FIG. 9 is a graph illustrating the formation of a power-off shutdown signal;
FIG. 10 is a graph illustrating the formation of a power down distress signal;
FIG. 11 is a graph of the formation of a power down leveling fault signal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
This embodiment provides an elevator outage fault monitoring system, monitoring system is used for the monitoring including elevator controller and signal processing board, with the elevator of can bus connection between elevator controller and the signal processing board, specifically, elevator outage fault monitoring system includes monitoring platform and data collection station, data collection station with can bus and monitoring platform signal connection between elevator controller and the signal processing board, specifically, data collection station is connected through serial transmission's mode with elevator controller, signal processing board, like can bus connection, the connection relation picture is shown in fig. 1, data collection station follows elevator controller and signal processing board (control box) can bus and draws operating data. The Canbus bus comprises a power supply (Vcc) and a ground (Gnd), and also comprises two data lines (Canbus + and Canbus-), and signals are transmitted in a differential mode, so that data can be transmitted in two directions. As shown in fig. 2, the data acquisition device includes a photoelectric isolator 1, a single chip microcomputer 2, and a wireless communication module 3, the photoelectric isolator 1, the single chip microcomputer 2, and the wireless communication module 3 are electrically connected in sequence, wherein the wireless communication module is an NBIOT module 3. The data acquisition unit is connected to an elevator controller and a canbus bus of an operation control box or a signal processing board through a photoelectric isolator 1; the singlechip 2 in the data acquisition unit is used for acquiring elevator running signals of the canbus bus, and the elevator running signals are wirelessly transmitted to the monitoring platform through the NBIOT module 3 after being filtered to a certain extent. In order to not influence the work of the original elevator system, the signal of the photoelectric isolator 1 is transmitted in a single direction, namely, the signal can only be output and can not be input, and the characteristic that the data acquisition unit is only monitored and not controlled is reflected. In this embodiment, the single chip microcomputer 2 is of a model STM32L433Rx (semiconductor corporation by jew), and the wireless communication module is a BC35-G NB-IOT module (shanghai mobile telecommunications technology, ltd).
Specifically, a group of serial interfaces of the single chip microcomputer 2 in the data acquisition unit are connected to the canbus bus through the photoelectric isolator 1, the other group of serial interfaces of the single chip microcomputer 2 is connected to the wireless communication module, received elevator data (an internal call signal, an elevator running signal, a door closing signal and an elevator stop running signal) are sent to the monitoring platform through the wireless communication module 3, and the wireless communication module (the NBIOT module 3) is used, so that network equipment is simplified, fault nodes are reduced, and the installation is facilitated.
Furthermore, the data acquisition unit further comprises a power management module 4, the power management module 4 is electrically connected with the photoelectric isolator 1, the single chip microcomputer 2 and the wireless communication module 3, and the power management module 4 is further connected with a standby power supply 5. The power supply for maintaining normal work of the data collector is collected from a canbus bus of the elevator (a direct-current 24V power supply), when the elevator is powered off, the 3.7V lithium battery is used as a standby power supply 5 to supply power to the data collector, and the power supply management module 4 is used for managing the working power supply and the standby power supply.
Further, as shown in fig. 3, the power management module 4 includes a charging and discharging management unit 401, an LM2576 voltage regulator circuit 402, and an RT8059 voltage regulator circuit 403 that are connected to each other, the power supply of the elevator is connected to the charging and discharging management unit 401 through the LM2576 voltage regulator circuit 402, the RT8059 voltage regulator circuit 403 is connected to the single chip microcomputer 2 and the wireless communication module 3, and the charging and discharging management unit 401 is further connected to the backup power supply.
The charge and discharge management unit 401 is used for high-precision voltage and charge current regulation, pre-charging, charge state indication and charge cut-off; optionally, the charging and discharging management unit 401 adopts a TP5400 chip, the chip is a battery charging and 5V constant voltage boost controller dedicated to a single lithium battery, the charging unit integrates functions of high-precision voltage and charging current regulator, pre-charging, charging state indication, charging cutoff and the like, and can output a maximum charging current of 1A. The VFM switch type DC/DC boost converter manufactured by the CMOS process and having extremely low no-load current of the boost circuit has extremely low no-load power consumption (less than 10uA), and the boost output driving current capacity reaches 1A.
In the TP5400 circuit of fig. 4, the voltage that VUSB provides for the USB debug interface is the input voltage. BAT is the power lithium battery charging voltage, and this pin connects the lithium cell. The VOUT pin outputs +5V voltage which can be generated by boosting the power lithium battery and is supplied to a subsequent circuit.
Further, the LM2576 voltage stabilizing circuit 402 and the RT8059 voltage stabilizing circuit 403 are both used for circuit voltage reduction; the lithium battery power supply management circuit can boost a 3.7V lithium battery by 5V, but the lithium battery power supply management circuit cannot be directly used as a power supply to directly supply power to modules such as an NB-IOT (NB-IOT) and the like, the power supply voltage range of components on the modules such as the NBIOT and the like is generally 1.8V-3.6V, the recommended voltage is 3.3V, (BC35-G power supply range is 3.1V-4.2V, the recommended voltage is 3.8V, and the modules such as the NB-IOT and the like can normally work by using 3.3V), therefore, the 5V level needs to be converted into 3.3V to be supplied to the modules such as the NB-IOT and the like and a singlechip module, and RT. As shown in fig. 5, the RT8059 voltage regulator 403 is a high-efficiency pulse width step-down DC/DC converter, and has an input voltage of 2.8V to 5.5V and an output voltage adjustable range: 0.6V-Vin, the output current can reach 1A. The output is regulated to 3.3V in the circuit, so that the NBIOT and other modules work normally. In addition, the voltage of the external direct supply source is 24V, and the voltage needs to be reduced to 5V through an LM2576 voltage stabilizing device. The LM2576 voltage regulator circuit 402 is a 3A current output buck switching type integrated voltage regulator circuit produced by the national semiconductor company of America, and comprises two series of LM2576 and LM2576 HV; the protection circuit has a perfect protection circuit, including current limitation, thermal shutdown and power failure and the like; the high-efficiency voltage stabilizing circuit can be formed by using few peripheral devices.
The highest input voltage of LM2576 is 40V, the output voltage can be selected to be 5V, and the circuit diagram is shown in FIG. 6.
Example 2
The embodiment provides a method for monitoring the power failure fault of an elevator by adopting the system in embodiment 1, which comprises the following steps:
s1, obtaining a can signal of an elevator can bus, wherein the can signal comprises an inside signal, a door closing signal, an operation signal and an operation stopping signal; after the monitoring platform receives the signals, whether the elevator is powered off or not can be judged according to the logic combination of the signals, and whether the phenomena of power failure people trapping fault or power failure leveling fault and the like exist after the power failure or not can be judged.
And S2, acquiring the level change condition of the stop operation signal, and judging whether the elevator stops operating unexpectedly by the level change condition of the stop operation signal sent by the elevator controller during the operation of the elevator.
And S3, analyzing the level change condition of the can signal, and determining the running state of the elevator according to the analysis result.
Regardless of the type of elevator or the elevator of that manufacturer, there is a data interface between the control box and the controller. In order to realize long-distance transmission, a canbus bus is generally adopted, and an internal call signal, a door closing signal, an elevator operation signal and an elevator operation stopping signal need to be interacted, so that convenience is provided for centralized monitoring and fault judgment. The data acquisition unit is connected to a canbus bus of the elevator controller and the control box or the signal processing board to acquire can signals, the system can timely and logically judge the elevator power failure man-trapping fault, the elevator power failure level layer fault and the like, relevant personnel are informed of alarming through various means, and various losses caused by the faults are reduced.
Specifically, as shown in fig. 7, the step S3 of analyzing the can signal level variation and determining the elevator operating state according to the analysis result includes:
and S31, judging whether the level change condition of the stop operation signal is changed from low level to high level, if so, judging that the elevator stops operating unexpectedly.
The following steps are also included after step S31:
and S32, judging whether any can signal is received within the time T1 after the elevator stops unexpectedly, and if not, judging that the elevator stops running after power failure, wherein in the embodiment, the time T1 is 0.1S.
S33, judging whether the elevator receives a can signal within T2 after being stopped unexpectedly, further judging whether a person carrying signal is received if no can signal is received within T2, judging that the elevator is in power-off and person carrying fault if the person carrying signal is received, and judging that the elevator is in power-off and stops running if the person carrying signal is not received; if the can signal is received within the time T2, the elevator is electrified again or the standby power supply is switched, whether the operation stopping signal is continuously received is further judged, if yes, whether a person carrying signal exists is further judged, if the person carrying signal exists, the elevator is judged to be in power-off and person carrying fault, if the person carrying signal does not exist, the elevator is judged to be in power-off and level layer fault, and the time T2 is 3 s.
If the can signal is received within the time T2(3s) after the elevator stops unexpectedly, but the can signal is not the elevator stop running signal, the elevator returns to normal running, and people can be released by opening the door on the nearby flat floor.
Further, the step of judging whether the elevator has a person signal during normal operation comprises the following steps:
and S41, receiving an internal calling signal sent by an elevator control box, judging whether the internal calling signal is changed from low level to high level, if so, judging that a person enters the elevator car, and calling the elevator to run, as shown in FIG. 8.
S42, receiving a door closing signal sent by an elevator control box, judging whether the door closing signal is changed from a low level to a high level, if so, judging that an elevator car door is closed and the elevator is ready; the elevator controller controls the starting of the elevator, and simultaneously sends a running signal to the elevator car to prompt the starting of the elevator, and the running signal of the elevator is changed from a low level to a high level at the moment.
S43, further judging whether the number of the internal call signals is multiple, if so, judging that multiple people enter the elevator, and therefore, the operation of the elevator stops at a certain floor, and the operation signal of the elevator is changed from high level to low level; then the door closing signal changes from high level to low level, which indicates that the elevator is opened and a person goes up and down. After completion the elevator is automatically closed again and operation continues … … until the last hall signal changes from high to low indicating that the last person has left the elevator. Therefore, the elevator carries people in the whole process from the setting of the door closing signal of the elevator to the resetting of the last door closing signal, and a people carrying signal is formed.
As shown in fig. 9, the signal change for determining the power failure stop of the elevator is specifically as follows:
the elevator running signal changes from high level to low level, which indicates that the elevator stops in place at the flat floor, and the elevator controller transmits the signal to the control box for display. However, when the elevator is suddenly powered off, the elevator can send an elevator stop operation signal, then the power is cut off, and at the moment, the monitoring platform can receive the elevator stop operation signal (namely, high level), and meanwhile, the monitoring platform cannot receive the can signal within a certain time. The monitoring platform receives the elevator stop operation signal, and then within the time T1 (namely the time delay delta T1, in the embodiment, 0.1s) after the elevator stop operation signal is received, the elevator stop operation signal is not received, which indicates that the elevator is powered off and stops operation, the elevator power-off signal is set at a high level until the elevator is powered on again, the elevator stop operation signal is received, and the elevator stop operation signal is not received.
If the elevator is powered on again (dual power supply switching or standby power supply is started) within T2 time (namely, time delay delta T2, in this embodiment, 3s) after the elevator operation stopping signal is received, if the elevator operation stopping signal can be received and is at a high level, the elevator is still in a fault, and the elevator power-off operation stopping signal is still valid; if the elevator stop running signal is not received within the time T2, the elevator stop running signal is restored to the low level, which indicates that the elevator starts running, people can be released at the nearby flat floor door, and the normal running program is entered. If the elevator is not powered up after time T2 (delay at 2, 3s), the power down stop signal remains active.
As shown in fig. 10, whether the elevator has a power-off man-carrying fault is judged by the following method: when the power-off stop signal of the elevator is at a high level and the manned signal is also at the high level before the power-off of the elevator, the power-off stop operation of the elevator is indicated under the condition of manned, the power-off man trapping fault of the elevator is formed, and emergency rescue needs to be rapidly provided. And after the time T2 (delta T2 is 3s), the elevator is not electrified, and the manned signal before power failure is at a low level, so that the elevator is in idle load power failure, and the elevator stops running after power failure. If the elevator is powered on again within the time T2(Δ T2 ═ 3s), at this time, if the elevator stop operation signal can be received and the elevator stop operation signal is high level, which indicates that the elevator is in a fault, the elevator power-off stop operation signal is still valid, meanwhile, if the elevator occupancy signal before power-off is low level, which indicates that the elevator is not occupied and the elevator is not stranded, but the elevator is still in a power-off flat-floor fault (the reason may be a main board deadlock or a safety circuit fault, etc.), emergency maintenance is required, and the signal changes as shown in fig. 11.
And when the monitoring platform judges that the elevator is in power-off trapping or is in power-off leveling fault, a corresponding alarm signal is sent. The method comprises the steps of sound and light alarm, short message/emergency call, mobile phone app and the like, and informs maintenance personnel of giving an alarm, and the sending of an alarm signal is stopped until the receiving personnel replies.
Compared with the prior art, the embodiment of the utility model, beneficial effect lies in: accessing a data collector to a canbus bus of an elevator controller and a control box or a signal processing board; the data acquisition unit extracts operation data from the canbus bus and monitors the operation of the elevator; the monitoring platform judges whether the operation data is abnormal or not, and sends an alarm signal if the operation data is abnormal. The elevator power failure fault monitoring system solves the problem that information cannot be obtained in time and the information cannot be dealt with (urgent repair) in time when an elevator power failure occurs; the loss caused by elevator faults is reduced, the running quality of the elevator is improved, and the elevator is low in installation cost, simple and practical; the data acquisition interfaces are unified, and no matter what type of elevator or elevator of the manufacturer, the data acquisition interfaces are provided with a control box and a controller; because the elevator signals are acquired through the elevator can bus, the operation data of the elevator is really acquired, and the fault signals of the elevator are logically combined by the system, so that the elevator man-trapping fault and the like are inferred, the condition that a manufacturer conceals the fault signals does not exist, and the fault judgment success rate is high.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. An elevator power failure fault monitoring system is used for monitoring an elevator comprising an elevator controller and a signal processing board, wherein the elevator controller is connected with the signal processing board through a canbus bus; the data acquisition unit comprises a photoelectric isolator, a single chip microcomputer and a wireless communication module, wherein the photoelectric isolator, the single chip microcomputer and the wireless communication module are sequentially in signal connection, the data acquisition unit further comprises a power supply management module, the power supply management module is electrically connected with the photoelectric isolator, the single chip microcomputer and the wireless communication module, and the power supply management module is further connected with a standby power supply.
2. The elevator outage fault monitoring system according to claim 1, wherein the elevator controller and the signal processing board are connected through a canbus bus, one set of serial interfaces of the single-chip microcomputer are connected to the canbus bus through the photoelectric isolator, and the other set of serial interfaces of the single-chip microcomputer are connected to the wireless communication module.
3. The elevator power failure fault monitoring system according to claim 1, wherein the power management module comprises a charging and discharging management unit, an LM2576 voltage stabilizing circuit and an RT8059 voltage stabilizing circuit which are connected with each other, a power supply of the elevator is connected to the charging and discharging management unit through the LM2576 voltage stabilizing circuit, the RT8059 voltage stabilizing circuit is connected to the single chip microcomputer and the wireless communication module, and the charging and discharging management unit is connected to the standby power supply.
4. The elevator outage fault monitoring system according to any one of claims 1-3, wherein the single chip microcomputer is STM32L433Rx in model number, the wireless communication module is a BC35-G NBIOT module, and the photoelectric isolator is a one-way photoelectric isolator.
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| CN201922375168.1U CN212269131U (en) | 2019-12-25 | 2019-12-25 | Elevator outage fault monitoring system |
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| CN201922375168.1U CN212269131U (en) | 2019-12-25 | 2019-12-25 | Elevator outage fault monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071892A (en) * | 2019-12-25 | 2020-04-28 | 深圳技术大学 | Elevator power failure fault monitoring system and method |
| CN114204802A (en) * | 2021-11-17 | 2022-03-18 | 深圳技术大学 | Charging circuit |
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2019
- 2019-12-25 CN CN201922375168.1U patent/CN212269131U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071892A (en) * | 2019-12-25 | 2020-04-28 | 深圳技术大学 | Elevator power failure fault monitoring system and method |
| CN111071892B (en) * | 2019-12-25 | 2023-09-12 | 深圳技术大学 | Elevator power failure monitoring system and method |
| CN114204802A (en) * | 2021-11-17 | 2022-03-18 | 深圳技术大学 | Charging circuit |
| CN114204802B (en) * | 2021-11-17 | 2023-05-16 | 深圳技术大学 | Charging circuit |
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