CN110526067B - Elevator door opening and closing time accurate acquisition system - Google Patents
Elevator door opening and closing time accurate acquisition system Download PDFInfo
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- CN110526067B CN110526067B CN201910896592.2A CN201910896592A CN110526067B CN 110526067 B CN110526067 B CN 110526067B CN 201910896592 A CN201910896592 A CN 201910896592A CN 110526067 B CN110526067 B CN 110526067B
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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
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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Abstract
The invention discloses an elevator door opening and closing time accurate acquisition system which comprises an acceleration data acquisition module, a tentative region acquisition module and a real region acquisition module; the acceleration data acquisition module is used for acquiring acceleration data of the elevator door running in the door opening and closing direction; the temporary area acquisition module is used for acquiring a temporary acceleration data area of the opening and closing action of the elevator door according to the acceleration data acquired in the set direction and determining the starting point and the ending point of the action; the real area acquisition module is used for combining areas which are overlapped or too close in interval time in all the temporary door opening and closing areas to obtain a real elevator door opening and closing area. The elevator door opening and closing time accurate acquisition system provided by the invention can acquire the elevator door opening and closing time accurately.
Description
Technical Field
The invention belongs to the technical field of automation equipment, relates to elevator equipment, and particularly relates to an accurate acquisition system for the opening and closing time of an elevator door.
Background
The elevator is the most common vertical transportation vehicle in modern high-rise buildings, saves time and physical strength of people and provides convenience for daily life. As a special device closely related to the life safety of the public, the safe operation of the elevator is receiving more and more attention from the society. However, because the elevator has a complex structure, the need to ensure safe and reliable operation of the elevator and detect the operation state and fault condition of the elevator become urgent needs for elevator management, maintenance and safe operation.
According to the statistics of the information network of the Chinese industry, China is the largest elevator country of production and consumer in the world and is also the largest elevator exit country. 81 ten thousands of newly-added elevators in 2017 in China, and the national elevator holding amount is 562.7 ten thousands.
The elevator industry in China has been developed for 70 years and is quite large at present. In the future, the whole industry will present the following development trends:
(1) domestic elevators will gradually expand the market share; (2) the elevator maintenance and repair market will be gradually standardized and expanded; (3) the elevator supervision will be intelligent.
At present, some enterprises in China develop a plurality of remote monitoring systems, and property, elevator operation companies and government departments can remotely monitor the state of an elevator in real time, find abnormal conditions and can acquire related information in time; however, since these systems are based on wireless network bases such as GPRS/GSM or 3G/4G, the following disadvantages are present:
a. the real-time running information of the elevator collected by the system is transmitted through wireless communication networks such as mobile, communication or telecommunication, so that the data flow is quite large, and in addition, the charging of a wireless network operator is based on the flow, so that the operation cost of the elevator remote monitoring system is high, and 24-hour uninterrupted monitoring cannot be realized.
b. The elevator fault early warning system has simple functions, has no database management function, can only carry out simple elevator running state monitoring, has no maintenance quality management monitoring function, and cannot carry out early warning of elevator faults.
c. The system compatibility is poor, the control can be only carried out on a few elevator types, the elevator faults cannot be accurately analyzed and judged, and specific fault positions of the elevator cannot be accurately given.
The existing monitoring mode generally knows the condition in the elevator by a camera arranged in the elevator or by receiving an alarm signal sent in the elevator; elevator faults cannot be predicted.
In view of the above, nowadays, there is an urgent need to design a new abnormality identification method for elevator and other equipment, so as to overcome the above-mentioned defects existing in the existing monitoring method for elevator and other equipment.
Disclosure of Invention
The invention provides an elevator door opening and closing time accurate acquisition system which can acquire elevator door opening and closing time.
In order to solve the technical problem, according to one aspect of the present invention, the following technical solutions are adopted:
an elevator door opening and closing time accurate acquisition system, comprising:
the acceleration data acquisition module is used for acquiring the acceleration data of the elevator door running in the door opening and closing direction;
the temporary area acquisition module is used for acquiring a temporary acceleration data area of the opening and closing action of the elevator door according to the acceleration data acquired in the set direction and determining the starting point and the ending point of the action;
and the real area acquisition module is used for combining the areas which are overlapped or too close in interval time in all the temporary door opening and closing areas to obtain a real elevator door opening and closing area.
As an embodiment of the present invention, the tentative region acquisition module includes a data smoothing unit that eliminates fluctuations in the acquired acceleration data using low-pass filtered smoothed data.
As an embodiment of the present invention, the tentative region acquisition module includes:
the door opening and closing area acquisition unit is used for finding out the maximum value and the minimum value of the acceleration signal of the elevator door in the door opening and closing direction in a set area and combining the maximum value and the minimum value into a door opening or closing area;
the area combination unit is used for combining the areas found by the door opening and closing area acquisition unit to form an opening-closing combination;
and all door opening and closing area acquisition units are used for judging whether the adjacent door opening and closing combinations belong to the same door opening and closing movement and determining all door opening and closing areas.
As an embodiment of the present invention, the method for acquiring the maximum value and the minimum value of the acceleration signal by the door opening and closing area acquiring unit includes: the value of the acceleration signal is maximum in the set area, and acceleration signals with acceleration values close to the acceleration signal are arranged on two sides of the acceleration signal, so that the acceleration signal is considered to be the maximum value of the acceleration signal in the set area; and the value of the acceleration signal is minimum in the set region, and acceleration signals with acceleration values close to the acceleration signal are arranged on two sides of the acceleration signal, so that the acceleration signal is considered to be the minimum value of the acceleration signal in the set region.
As an embodiment of the present invention, the tentative region acquisition module includes:
the door opening and closing combination acquisition unit is used for finding out wave crests and wave troughs in all acceleration signal curves of the elevator door, finding out wave crests and wave troughs of which the distances between the wave crests and the wave troughs are smaller than a set number of sampling points, using the corresponding wave crests, wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a door opening or closing combination at one time, and using the partial data as a first batch of acceleration signals; the combination of the door opening is wave crest-wave trough or wave trough-wave crest, and the combination of the door closing is wave trough-wave crest or wave crest-wave trough;
the temporary switch door area acquisition unit is used for calculating a median y of signal values of the first batch of acceleration signals, taking the median y as a third standard line, making a value of the first standard line parallel to a time axis as y + c, a value of the second standard line as y + d, a value of the fourth standard line as y-d, a value of the fifth standard line as y-c, and filtering extreme points by the first standard line and the fifth standard line; determining the starting point of a wave crest through a second standard line, taking N points forward as a door opening starting point, determining the end point of a wave trough through a fourth standard line, and taking M points backward as a door closing end point; the area from the door opening starting point to the door closing end point is a temporary door opening and closing area; the N points comprise signal values in a short time before the door is opened, and the M points comprise signal points in a short time after the door is closed; wherein c and d are set values.
As an embodiment of the present invention, the tentative region acquisition module includes an elevator door state identification unit configured to calculate a difference between accelerations of every two adjacent points in a continuously set number of points, and if a difference between a plurality of continuously set adjacent data points is greater than a threshold, the elevator door is considered to be in a motion state.
As an embodiment of the present invention, the tentative region acquisition module further includes an elevator door start and stop node accurate acquisition unit, configured to accurately find an elevator door start and stop node after determining the door opening and closing region.
As an embodiment of the present invention, the tentative region acquisition module includes:
the door opening and closing curve acquiring unit is used for acquiring a door opening and closing curve;
and the door opening and closing curve accurate acquisition unit is used for intercepting the door opening or closing curve obtained by the door opening and closing curve acquisition unit into a plurality of sections of data segments, and taking the section with the longest length or the section containing the most data points as the accurate door opening or closing data curve.
As an embodiment of the present invention, the tentative region acquisition module includes an elevator door motion state identification unit configured to identify whether the elevator door is in a motion state; and calculating the difference between adjacent acceleration data in a plurality of continuous acceleration data, if the set quantity difference exceeds a set threshold, judging that the acceleration data is not stable any more, and considering that the elevator door is in a motion state.
As an embodiment of the present invention, a mode of the tentative region acquisition module cutting the tentative acceleration data region into pieces of data includes: and acquiring acceleration data of which the acceleration data is higher than a set threshold in the temporary acceleration data area, and taking the area as a section of intercepted data if the acceleration data which is continuously set is higher than the set threshold.
The invention has the beneficial effects that: the elevator door opening and closing time accurate acquisition system provided by the invention can acquire the elevator door opening and closing time accurately.
The invention can be used for judging the abnormal operation of equipment, can obtain the acceleration data of the equipment (such as an elevator) according to the operation condition of the equipment, and can judge whether the equipment (such as the elevator) operates abnormally (such as the time for opening and closing the door is prolonged because the door is clamped by foreign matters) according to the acceleration data.
Drawings
Fig. 1 is a schematic diagram showing the components of an elevator door opening and closing time accurate acquisition system in one embodiment of the invention.
Fig. 2 is a flowchart of a method for accurately acquiring the opening and closing time of an elevator door according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a composition of a tentative region acquisition module according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a acceleration curve in the process of opening and closing the door of the elevator in one embodiment of the invention.
Fig. 5 is a sectional view of the acceleration curve during the door opening and closing process of the elevator according to an embodiment of the present invention.
Fig. 6 is a graph showing the velocity and acceleration curves during the opening or closing of an elevator door according to an embodiment of the present invention.
FIG. 7 is a sectional view of a door opening area according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The description in this section is for several exemplary embodiments only, and the present invention is not limited only to the scope of the embodiments described. It is within the scope of the present disclosure and protection that the same or similar prior art means and some features of the embodiments may be interchanged.
In the specification, an "operation action" refers to an action in the operation process of the device, such as an ascending or descending action, a door opening action or a door closing action, or a door opening and closing action. The door opening and closing action refers to door opening action or/and door closing action; the door opening and closing device can be used for opening and closing a door, or opening and closing the door.
The invention discloses an elevator door opening and closing time accurate acquisition system, and fig. 1 is a schematic composition diagram of the elevator door opening and closing time accurate acquisition system in one embodiment of the invention; referring to fig. 1, in an embodiment of the present invention, the system for accurately acquiring the opening and closing time of the elevator door includes: the device comprises an acceleration data acquisition module 1, a temporary area acquisition module 2 and a real area acquisition module 3.
The acceleration data acquisition module 1 is used for acquiring acceleration data of the elevator door running in the door opening and closing direction; the temporary area acquisition module 2 is used for acquiring a temporary acceleration data area of the opening and closing action of the elevator door according to the acceleration data acquired in the set direction and determining the starting point and the ending point of the action; the real area acquisition module 3 is used for merging the areas which are overlapped or too close in interval time in all the temporarily-fixed door opening and closing areas to obtain a real elevator door opening and closing area.
Fig. 2 is a flow chart of a method for accurately acquiring the opening and closing time of an elevator door according to an embodiment of the invention; referring to fig. 2, in an embodiment of the present invention, a method for accurately acquiring door opening and closing time of an elevator by using an elevator door opening and closing time accurate acquisition system includes:
and (3) combining the regions which are overlapped or too close in interval time in all the temporarily-fixed door opening and closing regions to obtain a real elevator door opening and closing region. In an embodiment of the present invention, in step 3, merging the regions that are overlapped or too close to each other in time in all the temporary switch gate regions means merging the two regions into one region.
In an embodiment of the present invention, the tentative region acquisition module 2 includes a data smoothing unit that uses low-pass filtering to smooth the data and eliminate fluctuations in the acquired acceleration data.
FIG. 3 is a schematic diagram illustrating a temporary region acquisition module according to an embodiment of the present invention; referring to fig. 3, in an embodiment of the present invention, the tentative region acquiring module 2 includes: a door opening and closing area acquisition unit 21, an area combination unit 22, and an all-door opening and closing area acquisition unit 23. The door opening and closing area obtaining unit 21 is configured to find a maximum value and a minimum value in a set area in an acceleration signal of the elevator door in a door opening and closing direction, and combine the maximum value and the minimum value into a door opening or closing area; the area combining unit 22 is configured to combine the areas found by the door opening and closing area obtaining unit 21 to form an opening-closing combination; the all-door-opening-and-closing-region acquiring unit 23 is configured to determine whether adjacent door opening-and-closing combinations belong to the same door opening-and-closing movement, and determine all door opening-and-closing regions.
In an embodiment of the invention, the maximum value and the minimum value of the acceleration signal are obtained by a curve of the acceleration signal.
In an embodiment of the invention, the maximum value and the minimum value of the acceleration signal correspond to a peak and a trough of an acceleration curve. In an embodiment of the present invention, the method for acquiring the maximum value and the minimum value of the acceleration signal in the set area by the door opening and closing area acquiring unit 21 includes: the value of the acceleration signal is maximum in the set area, and acceleration signals with acceleration values close to the acceleration signal are arranged on two sides of the acceleration signal, so that the acceleration signal is considered to be the maximum value of the acceleration signal in the set area (the peak of the acceleration signal is obtained in the mode); and (3) the value of the acceleration signal is minimum in the set region, and acceleration signals with acceleration values close to the acceleration signal are arranged on both sides of the acceleration signal, so that the acceleration signal is considered to be the minimum value of the acceleration signal in the set region (the wave trough of the acceleration signal is obtained in the mode). In an embodiment of the present invention, the term "close" refers to data on both the left and right sides, and is not associated with the rightmost end of the rising waveform or the leftmost end of the falling waveform.
In an embodiment of the present invention, the tentative region obtaining module 2 includes: the device comprises an open-close door combination acquisition unit and a temporary open-close door area acquisition unit.
The door opening and closing combination acquiring unit is used for finding out wave crests and wave troughs in all acceleration signal curves of the elevator door, finding out wave crests and wave troughs of which the distances between the wave crests and the wave troughs are smaller than a set number of sampling points, taking the corresponding wave crests, wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a door opening or closing combination at one time, and taking the partial data as a first batch of acceleration signals; the combination of the door opening is wave crest-wave trough or wave trough-wave crest, and the combination of the door closing is wave trough-wave crest or wave crest-wave trough.
The temporary switch door area acquisition unit is used for calculating a median y of signal values of the first batch of acceleration signals, the median y is used as a third standard line, the value of the first standard line parallel to a time axis is y + c, the value of the second standard line is y + d, the value of the fourth standard line is y-d, the value of the fifth standard line is y-c, and the first standard line and the fifth standard line are used for filtering extreme points; determining the starting point of a wave crest through a second standard line, taking N points forward as a door opening starting point, determining the end point of a wave trough through a fourth standard line, and taking M points backward as a door closing end point; the area from the door opening starting point to the door closing end point is a temporary door opening and closing area; the N points comprise signal values in a short time before the door is opened, and the M points comprise signal points in a short time after the door is closed; wherein c and d are set values.
Fig. 4 is a schematic diagram of a acceleration curve in the door opening and closing process of an elevator in an embodiment of the invention, and fig. 5 is a sectional schematic diagram of the acceleration curve in the door opening and closing process of the elevator in an embodiment of the invention; referring to fig. 5, in an embodiment of the present invention, the method of the present invention includes the following steps: the method comprises the steps of firstly finding out a median y1 of an elevator door opening and closing curve, intercepting 4 standard lines which are respectively y1+400, y1+10, y1-10 and y1-400, and intercepting a continuous curve in a region when 5 continuous points or more are within a standard line 1 and a standard line 2 or within a standard line 4 and a standard line 5. Then, finding a peak combination to form a one-time complete door opening and closing curve, and concretely implementing as follows: first, it is determined whether the door opening/closing curve starts from an upward peak or a downward valley. Because the curve of the opening and closing door is greatly interfered by the ascending and descending (the acceleration sensor is relatively deviated to a certain degree with the elevator, and the Y axis is influenced by the acceleration sensor to generate fluctuation when the elevator ascends and descends), the starting wave crest direction is directly determined by the opening and closing door in a section of non-ascending and descending section, and the starting wave crest direction is accidental, so that statistics is carried out by the trend of the first wave crest in a plurality of sections of non-ascending and descending sections, and the frequency is more than that of the actual opening and closing door. Taking fig. 5 as an example, the sequence of the truncated peaks is, at the beginning, an upward peak, a downward valley (in the present method, the whole section within the standard line 4 and the standard line 5 is a valley), and an upward peak. Therefore, after all the peaks and troughs are cut from a segment of continuous packet id data, the direction of every two adjacent peaks and troughs is upward and downward, which is the starting end, and downward and upward, which is the ending end. Two starting ends and two ending ends which are nearest form a section of door opening and closing curve, and two rules are different: the distance between two opposite wave crests (such as point A to point B and point C to point D in the figure 5) is not more than 100 points, and the distance between two homodromous waves is not more than 4000 points (such as point A to point D in the figure 4); the abnormal data is discarded.
Fig. 6 is a schematic diagram of speed and acceleration curves during the door opening and closing process of an elevator according to an embodiment of the present invention; referring to fig. 6, in an embodiment of the present invention, the speed and acceleration during the door opening and closing process are shown in fig. 6.
In an embodiment of the present invention, the tentative region obtaining module includes an elevator door state identification unit, configured to calculate a difference between accelerations of every two adjacent points in a continuously set number of points, and if a difference between a plurality of continuously set adjacent data points is greater than a threshold, the elevator door is considered to be in a motion state.
In an embodiment of the present invention, the tentative region acquisition module further includes an elevator door start and stop node accurate acquisition unit, which is configured to accurately find the elevator door start and stop node after determining the door opening and closing region.
In an embodiment of the present invention, the tentative region acquiring module includes: the device comprises a door opening and closing curve acquisition unit and a door opening and closing curve accurate acquisition unit. The door opening and closing curve acquiring unit is used for acquiring a door opening and closing curve; the door opening and closing curve accurate acquisition unit is used for intercepting the door opening or closing curve obtained by the door opening and closing curve acquisition unit into a plurality of sections of data segments, and the section with the longest data point or the section with the largest data point is taken as the accurate door opening or closing data curve.
In an embodiment of the present invention, the tentative region acquisition module includes an elevator door motion state identification unit, configured to identify whether an elevator door is in a motion state; and calculating the difference between adjacent acceleration data in a plurality of continuous acceleration data, if the set quantity difference exceeds a set threshold, judging that the acceleration data is not stable any more, and considering that the elevator door is in a motion state.
In an embodiment of the present invention, a manner of intercepting the tentative acceleration data area into data segments by the tentative area acquisition module includes: and acquiring acceleration data of which the acceleration data is higher than a set threshold in the temporary acceleration data area, and taking the area as a section of intercepted data if the acceleration data which is continuously set is higher than the set threshold.
FIG. 7 is a schematic sectional view of a door opening area according to an embodiment of the present invention; referring to fig. 7, in an embodiment of the present invention, the system for accurately obtaining the door opening and closing time of the elevator further includes a door opening and closing segmentation module, where the door opening and closing segmentation module includes: the device comprises a jerk acquisition unit, a zone segment dividing unit and an operation curve segmenting unit.
The jerk acquisition unit is configured to calculate a jerk at each point in a zone (e.g., a door opening zone, a door closing zone, or a door opening and closing zone). The region division unit is used for identifying all the regions of which the calculated jerk value is smaller than a set value (0.05m/s2) on the time axis to obtain a plurality of regions, and the region division unit comprises: the system comprises a gantry crane starting area, a plurality of acceleration change interval areas and a gantry crane stopping area; the plurality of jerk change interval areas at least comprise a first jerk change interval area and a second jerk change interval area, and intersection points are formed between curves between the first jerk change interval area and the second jerk change interval area and an acceleration median line. The operation curve segmentation unit is used for dividing the whole operation curve into a plurality of sections according to the gantry crane starting area, the gantry crane stopping area, the plurality of jerk change interval areas and the intersection point obtained by the area section division unit.
In an embodiment of the present invention, the segmenting process of the door opening and closing segmenting module specifically includes:
step 41: calculating the acceleration of each point in the area (door opening area);
step 42: all the segments of which the calculated jerk value is less than the set value (0.05m/s2) are identified on the time axis, resulting in a number of segments including: the system comprises a gantry crane starting area, a plurality of acceleration change interval areas and a gantry crane stopping area; the acceleration change interval areas at least comprise a first acceleration change interval area and a second acceleration change interval area, and intersection points are formed between curves between the first acceleration change interval area and the second acceleration change interval area and an acceleration median line;
step 43: and dividing the whole operation curve into a plurality of sections according to the door machine starting area, the door machine stopping area, the jerk change interval areas and the intersection obtained in the step 42.
In an embodiment of the present invention, as shown in fig. 7, the marked sections are the door driving start area, the first speed changing area, the second speed changing area, the third speed changing area (peak), the fourth speed changing area (valley), the fifth speed changing area, the sixth speed changing area, and the door driving stop area, respectively. The middle point is the intersection point of the curve between the wave crest and the wave trough and the median line.
In conclusion, the elevator door opening and closing time accurate acquisition system provided by the invention can acquire the elevator door opening and closing time accurately.
The invention can be used for judging the abnormal operation of equipment, can obtain the acceleration data of the equipment (such as an elevator) according to the operation condition of the equipment, and can judge whether the equipment (such as the elevator) operates abnormally (such as the time for opening and closing the door is prolonged because the door is clamped by foreign matters) according to the acceleration data.
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 description and applications of the invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
Claims (9)
1. An elevator door opening and closing time accurate acquisition system, characterized in that the elevator door opening and closing time accurate acquisition system includes: the acceleration data acquisition module is used for acquiring the acceleration data of the elevator door running in the door opening and closing direction;
the temporary area acquisition module is used for acquiring a temporary acceleration data area of the opening and closing action of the elevator door according to the acceleration data acquired in the set direction and determining the starting point and the ending point of the action;
the real area acquisition module is used for combining areas which are overlapped or too close in interval time in all the temporary door opening and closing areas to obtain a real elevator door opening and closing area;
the tentative region acquisition module includes:
the door opening and closing combination acquiring unit is used for finding out wave crests and wave troughs in all acceleration signal curves of the elevator door, finding out wave crests and wave troughs of which the number of spacing points between the wave crests and the wave troughs is less than a set number, using the corresponding wave crests, wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a door opening or closing combination at one time, and using the partial data as a first batch of acceleration signals; the combination of the door opening is wave crest-wave trough or wave trough-wave crest, and the combination of the door closing is wave trough-wave crest or wave crest-wave trough;
the temporary switch door area acquisition unit is used for calculating a median y of signal values of the first batch of acceleration signals, taking the median y as a third standard line, making a value of the first standard line parallel to a time axis as y + c, a value of the second standard line as y + d, a value of the fourth standard line as y-d, a value of the fifth standard line as y-c, and filtering extreme points by the first standard line and the fifth standard line; determining the starting point of a wave crest through a second standard line, taking N points forward as a door opening starting point, determining the end point of a wave trough through a fourth standard line, and taking M points backward as a door closing end point; the area from the door opening starting point to the door closing end point is a temporary door opening and closing area; the N points comprise signal values in a short time before the door is opened, and the M points comprise signal points in a short time after the door is closed; wherein c and d are set values.
2. The elevator door opening and closing time accurate acquisition system according to claim 1, characterized in that:
the temporary area acquisition module comprises a data smoothing processing unit, and the data are smoothed by low-pass filtering to eliminate the fluctuation of the acquired acceleration data.
3. The elevator door opening and closing time accurate acquisition system according to claim 1, characterized in that:
the tentative region acquisition module further includes:
the door opening and closing area acquisition unit is used for finding out the maximum value and the minimum value of the acceleration signal of the elevator door in the door opening and closing direction in a set area and combining the maximum value and the minimum value into a door opening or closing area;
the area combination unit is used for combining the areas found by the door opening and closing area acquisition unit to form an opening-closing combination;
and all door opening and closing area acquisition units are used for judging whether the adjacent door opening and closing combinations belong to the same door opening and closing movement and determining all door opening and closing areas.
4. The elevator door opening and closing time accurate acquisition system according to claim 3, characterized in that:
the method for acquiring the maximum value and the minimum value of the acceleration signal by the door opening and closing area acquisition unit comprises the following steps: the value of the acceleration signal is maximum in the set area, and acceleration signals with acceleration values close to the acceleration signal are arranged on two sides of the acceleration signal, so that the acceleration signal is considered to be the maximum value of the acceleration signal in the set area; and the value of the acceleration signal is minimum in the set region, and acceleration signals with acceleration values close to the acceleration signal are arranged on two sides of the acceleration signal, so that the acceleration signal is considered to be the minimum value of the acceleration signal in the set region.
5. The elevator door opening and closing time accurate acquisition system according to claim 1, characterized in that:
the temporary area obtaining module comprises an elevator door state identification unit and is used for calculating the difference value of the acceleration of every two adjacent points in the points with the continuously set number, and if the difference value of a plurality of continuously set adjacent data points is larger than a threshold value, the elevator door is considered to be in a motion state.
6. The elevator door opening and closing time accurate acquisition system according to claim 5, characterized in that:
the temporary area acquisition module further comprises an elevator door starting and stopping node accurate acquisition unit which is used for accurately finding the elevator door starting and stopping nodes after the door opening and closing area is determined.
7. The elevator door opening and closing time accurate acquisition system according to claim 1, characterized in that:
the tentative region acquisition module includes:
the door opening and closing curve acquiring unit is used for acquiring a door opening and closing curve;
and the door opening and closing curve accurate acquisition unit is used for intercepting the door opening or closing curve obtained by the door opening and closing curve acquisition unit into a plurality of sections of data segments, and taking the section with the longest length or the section containing the most data points as the accurate door opening or closing data curve.
8. The elevator door opening and closing time accurate acquisition system according to claim 7, characterized in that:
the temporary area acquisition module comprises an elevator door motion state identification unit and is used for identifying whether the elevator door is in a motion state or not; and calculating the difference between adjacent acceleration data in a plurality of continuous acceleration data, if the set quantity difference exceeds a set threshold, judging that the acceleration data is not stable any more, and considering that the elevator door is in a motion state.
9. The elevator door opening and closing time accurate acquisition system according to claim 7, characterized in that:
the mode of the temporary region acquisition module for intercepting the temporary acceleration data region into data segments comprises the following steps: and acquiring acceleration data of which the acceleration data are higher than a set threshold value in the temporary acceleration data area, and taking the area as a section of intercepted data if a plurality of continuous acceleration data are higher than the set threshold value.
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| CN110921446B (en) * | 2019-12-10 | 2022-04-12 | 佳格科技(浙江)股份有限公司 | Equipment attribute acquisition system |
| CN112723069B (en) * | 2020-12-16 | 2023-06-09 | 长沙慧联智能科技有限公司 | TOF visual detection-based elevator door running state monitoring method and system |
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| JPH043792A (en) * | 1989-11-21 | 1992-01-08 | Mitsubishi Electric Corp | Control device for elevator and control method |
| CN105883558B (en) * | 2016-06-27 | 2018-09-11 | 广州广日电梯工业有限公司 | A kind of elevator switch door time self learning system and method |
| CN106586752B (en) * | 2017-01-23 | 2019-01-22 | 大连奥远电子股份有限公司 | A kind of system acquiring elevator cage door switching information |
| CN208166259U (en) * | 2018-03-21 | 2018-11-30 | 大连凯晟科技发展有限公司 | A kind of Elevator Aiming Storey Precision, switch gate time detection device |
| JP6553251B1 (en) * | 2018-05-25 | 2019-07-31 | 東芝エレベータ株式会社 | Elevator control method and elevator using the same |
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