CN110642110A - Method for accurately acquiring door opening and closing time of elevator - Google Patents
Method for accurately acquiring door opening and closing time of elevator Download PDFInfo
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- CN110642110A CN110642110A CN201910897487.0A CN201910897487A CN110642110A CN 110642110 A CN110642110 A CN 110642110A CN 201910897487 A CN201910897487 A CN 201910897487A CN 110642110 A CN110642110 A CN 110642110A
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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
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Abstract
The invention discloses a method for accurately acquiring the opening and closing time of an elevator door, which comprises the following steps: step 1, acquiring acceleration data of an elevator door running in the door opening and closing direction; step 2, 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 3, combining the regions which are overlapped or too close in interval time in all the temporary door opening and closing regions to obtain a real elevator door opening and closing region. The method for accurately acquiring the door opening and closing time of the elevator can acquire the door opening and closing time of the elevator. The method can be used for judging the abnormal operation of the equipment, can acquire the acceleration data of the equipment according to the operation condition of the equipment, can judge whether the equipment operates abnormally or not according to the acceleration data, can judge the equipment fault, can find the abnormal condition which possibly causes the equipment fault, and effectively ensures the use safety of the equipment.
Description
Technical Field
The invention belongs to the technical field of automation equipment, relates to elevator equipment, and particularly relates to a method for accurately acquiring 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 a method for accurately acquiring the door opening and closing time of an elevator, which can acquire the accurate door opening and closing time of the elevator.
In order to solve the technical problem, according to one aspect of the present invention, the following technical solutions are adopted:
the method for accurately acquiring the door opening and closing time of the elevator comprises the following steps:
step 1, acquiring acceleration data of an elevator door running in the door opening and closing direction;
and 3, combining the regions which are overlapped or too close in interval time in all the temporary door opening and closing regions to obtain a real elevator door opening and closing region.
As an embodiment of the present invention, the step 2 further includes a data smoothing step of smoothing the data by using low-pass filtering to eliminate fluctuation of the collected acceleration data.
As an embodiment of the present invention, the step 2 includes:
step 21: finding out the maximum value and the minimum value in the acceleration signal of the elevator door in the door opening and closing direction, and combining the maximum value and the minimum value into a door opening or closing area;
step 22: combining the areas found in step 21 to form an open-close door combination;
step 23: and judging whether the adjacent opening-closing door 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 step 2 specifically includes:
step 2 a: 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 and wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a one-time door opening or closing combination, 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;
and step 2 b: calculating a median y of signal values of the first group of acceleration signals, taking the median y as a third standard line, making a first standard line with the value of y + c parallel to a time axis, a second standard line with the value of y + d, a fourth standard line with the value of y-d, and a fifth standard line with the value of y-c, wherein 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.
As an embodiment of the present invention, the step 2 further includes an elevator door state identification step: and calculating the difference value of the acceleration of each two adjacent points in the points with the continuously set number, and if the difference value of the adjacent data points with the continuously set number is larger than a threshold value, determining that the elevator door is in a motion state.
In step 2, after determining the door opening and closing area, the starting and stopping nodes of the elevator door are accurately found.
As an embodiment of the present invention, the step 2 further includes: and intercepting the door opening or closing curve obtained by the steps into a plurality of sections of data segments, and taking the section with the longest data point or the section with the most data points as an accurate door opening or closing data curve.
As an implementation mode of the invention, the difference value between adjacent acceleration data in a plurality of continuous acceleration data is calculated, if the difference value of the set quantity exceeds the set threshold value, the acceleration data is judged to be no longer stable, and the elevator door is considered to be in a motion state.
As an embodiment of the present invention, the method of dividing the temporary acceleration data area into the pieces of data in the step 2 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 method for accurately acquiring the door opening and closing time of the elevator can acquire the door opening and closing time of the elevator.
The method can be used for judging the abnormal operation of the equipment, can acquire 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 in an abnormal condition (such as the time for opening and closing the door is prolonged because the door is blocked by foreign matters) according to the acceleration data.
Drawings
Fig. 1 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. 2 is a flowchart of step 2 of the method for accurately acquiring the opening and closing time of the elevator door in one embodiment of the invention.
Fig. 3 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. 4 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. 5 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. 6 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 a method for accurately acquiring the door opening and closing time of an elevator, which comprises the following steps:
step 1, acquiring acceleration data of the elevator door running in the door opening and closing direction;
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 step 2 further includes a data smoothing processing step, which uses low-pass filtering to smooth the data, so as to eliminate the fluctuation of the collected acceleration data.
Fig. 2 is a flow chart of step 2 of the method for accurately acquiring the opening and closing time of the elevator door in one embodiment of the invention; referring to fig. 2, in an embodiment of the present invention, the step 2 includes:
step 21: finding out the maximum value and the minimum value in the acceleration signal of the elevator door in the door opening and closing direction, and combining the maximum value and the minimum value into a door opening or closing area;
step 22: combining the areas found in step 21 to form an open-close door combination;
step 23: and judging whether the adjacent opening-closing door combinations belong to the same door opening and closing movement, and determining all door opening and closing areas.
In an embodiment of the present invention, the step 2 specifically includes:
step 2 a: 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 and wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a one-time door opening or closing combination, 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;
and step 2 b: calculating a median y of signal values of the first group of acceleration signals, taking the median y as a third standard line, making a first standard line with the value of y + c parallel to a time axis, a second standard line with the value of y + d, a fourth standard line with the value of y-d, and a fifth standard line with the value of y-c, wherein 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. 3 is a schematic diagram of a acceleration curve in the door opening and closing process of an elevator in one embodiment of the invention, and fig. 4 is a sectional schematic diagram of the acceleration curve in the door opening and closing process of the elevator in one embodiment of the invention; referring to fig. 4, 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. 4 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 4) 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. 5 is a schematic diagram of speed and acceleration curves during the opening and closing of an elevator door according to an embodiment of the present invention; referring to fig. 5, in an embodiment of the present invention, the speed and acceleration during the door opening and closing process are shown in fig. 5.
In an embodiment of the present invention, the step 2 further includes an elevator door status identification step: and calculating the difference value of the acceleration of each two adjacent points in the points with the continuously set number, and if the difference value of the adjacent data points with the continuously set number is larger than a threshold value, determining that the elevator door is in a motion state.
In an embodiment of the present invention, the step 2 further includes an elevator door status identification step: and calculating the difference value of the acceleration of each two adjacent points in the points with the continuously set number, and if the difference value of the two adjacent points exceeds a set threshold value, determining that the elevator is in a running state.
In an embodiment of the invention, a difference value between adjacent acceleration data in a plurality of continuous acceleration data is calculated, if a set quantity difference value exceeds a set threshold value, the acceleration data is judged to be no longer stable, and the elevator door is considered to be in a motion state.
In an embodiment of the present invention, in step 2, after determining the door opening and closing area, the elevator door start and stop nodes are accurately found.
In an embodiment of the present invention, the step 2 further includes: and intercepting the door opening or closing curve obtained by the steps into a plurality of sections of data segments, and taking the section with the longest data point or the section with the most data points as an accurate door opening or closing data curve.
In an embodiment of the invention, a difference value between adjacent acceleration data in a plurality of continuous acceleration data is calculated, if a set quantity difference value exceeds a set threshold value, the acceleration data is judged to be no longer stable, and the elevator door is considered to be in a motion state.
In an embodiment of the present invention, the manner of intercepting the tentative acceleration data area into data segments in step 2 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. 6 is a schematic sectional view of a door opening area according to an embodiment of the present invention; referring to fig. 6, in an embodiment of the present invention, the method of the present invention may further include step 4 specifically including:
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. 6, 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 method for accurately acquiring the door opening and closing time of the elevator can acquire the door opening and closing time of the elevator.
The method can be used for judging the abnormal operation of the equipment, can acquire 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 in an abnormal condition (such as the time for opening and closing the door is prolonged because the door is blocked 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. The method for accurately acquiring the door opening and closing time of the elevator is characterized by comprising the following steps of:
step 1, acquiring acceleration data of an elevator door running in the door opening and closing direction;
step 2, 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 3, combining the regions which are overlapped or too close in interval time in all the temporary door opening and closing regions to obtain a real elevator door opening and closing region.
2. The method for accurately acquiring the opening and closing time of the elevator door according to claim 1, wherein:
the step 2 further comprises a data smoothing processing step, wherein the data are smoothed by low-pass filtering, and the fluctuation of the collected acceleration data is eliminated.
3. The method for accurately acquiring the opening and closing time of the elevator door according to claim 1, wherein:
the step 2 comprises the following steps:
step 21: finding out the maximum value and the minimum value in the acceleration signal of the elevator door in the door opening and closing direction, and combining the maximum value and the minimum value into a door opening or closing area;
step 22: combining the areas found in step 21 to form an open-close door combination;
step 23: and judging whether the adjacent opening-closing door combinations belong to the same door opening and closing movement, and determining all door opening and closing areas.
4. The method for accurately acquiring the opening and closing time of the elevator door according to claim 1, wherein:
the step 2 specifically comprises:
step 2 a: 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 and wave troughs and acceleration signals between the wave crests and the wave troughs as partial data in a one-time door opening or closing combination, 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;
and step 2 b: calculating a median y of signal values of the first group of acceleration signals, taking the median y as a third standard line, making a first standard line with the value of y + c parallel to a time axis, a second standard line with the value of y + d, a fourth standard line with the value of y-d, and a fifth standard line with the value of y-c, wherein 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.
5. The method for accurately acquiring the opening and closing time of the elevator door according to claim 1, wherein:
the step 2 further comprises an elevator door state identification step: and calculating the difference value of the acceleration of each two adjacent points in the points with the continuously set number, and if the difference value of the adjacent data points with the continuously set number is larger than a threshold value, determining that the elevator door is in a motion state.
6. The method for accurately acquiring the opening and closing time of the elevator door according to claim 5, wherein:
in the step 2, after the door opening and closing area is determined, the starting and stopping nodes of the elevator door are accurately found.
7. The method for accurately acquiring the opening and closing time of the elevator door according to claim 1, wherein:
the step 2 further comprises: and intercepting the door opening or closing curve obtained by the steps into a plurality of sections of data segments, and taking the section with the longest data point or the section with the most data points as an accurate door opening or closing data curve.
8. The method for accurately acquiring the opening and closing time of the elevator door according to claim 7, wherein:
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 method for accurately acquiring the opening and closing time of the elevator door according to claim 7, wherein:
the method for intercepting the temporary acceleration data area into data segments in the step 2 comprises the following steps:
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.
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| CN201910897487.0A CN110642110B (en) | 2019-09-23 | 2019-09-23 | Method for accurately acquiring door opening and closing time of elevator |
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| CN108178035A (en) * | 2016-12-08 | 2018-06-19 | 福州鑫奥特纳科技有限公司 | A kind of elevator cage door state monitoring apparatus and monitoring method |
| CN108875710A (en) * | 2018-07-24 | 2018-11-23 | 杭州电子科技大学 | Elevator door speed of service estimation method based on energy threshold algorithm |
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2019
- 2019-09-23 CN CN201910897487.0A patent/CN110642110B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009214952A (en) * | 2008-03-07 | 2009-09-24 | Mitsubishi Electric Corp | Door device of elevator |
| CN108178035A (en) * | 2016-12-08 | 2018-06-19 | 福州鑫奥特纳科技有限公司 | A kind of elevator cage door state monitoring apparatus and monitoring method |
| CN106586752A (en) * | 2017-01-23 | 2017-04-26 | 大连奥远电子股份有限公司 | System for acquiring opening and closing information of elevator cage door |
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