CN108996380A - A kind of escalator step missing detection guard method - Google Patents
A kind of escalator step missing detection guard method Download PDFInfo
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- CN108996380A CN108996380A CN201810991008.7A CN201810991008A CN108996380A CN 108996380 A CN108996380 A CN 108996380A CN 201810991008 A CN201810991008 A CN 201810991008A CN 108996380 A CN108996380 A CN 108996380A
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- China
- Prior art keywords
- escalator
- proximity sensor
- guard method
- missing detection
- pulse
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
- B66B25/003—Methods or algorithms therefor
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- Escalators And Moving Walkways (AREA)
Abstract
The present invention provides a kind of escalator steps to lack detection guard method; it mainly comprises the steps that A. signal acquisition: first proximity sensor triggered by step upper edge is set at the step revolution of escalator; in the side of the main drive sprocket of step chains, the second proximity sensor of one face gear teeth is set; when escalator operation, the pulse signal that the first proximity sensor and the second proximity sensor generate is sent to the control system of escalator；B. step deletion determines: the pulse signal of comparison the first proximity sensor and the second proximity sensor, when in the time interval for adjacent two pulse that the first proximity sensor issues, the umber of pulse that second proximity sensor issues is more than threshold value, then is determined as step deletion and executes step C；C. escalator start and stop.This method testing agency simple, easy to maintain using structure, detects high reliablity.
Description
Technical field
The present invention relates to escalator technical field, in particular to a kind of escalator step missing detection guard method.
Background technique
Escalator step is caused casualties due to step deletion in order to prevent, and escalator can generally detect step
Deletion condition, once hair find step deletion if stop escalator operation.Carrying out step deletion detection at present is using peace
The movement of the mode of full limit switch and spring mechanism associated working, safety limit switch is completed by spring mechanism, when no ladder
When grade missing, the spring of the mechanism is in compressive state, and safety limit switch is in release conditions；When detecting step deletion
When, the spring of the mechanism is changed into release conditions by compressive state, and triggers safety limit switch movement, to realize to step
The detection of missing.
Since existing testing agency realizes detection function using spring-compressed principle, there are Safe Failures for spring mechanism
A possibility that, and linkage mechanism installation is complicated, is not easy to daily maintenance.
As it can be seen that the prior art has much room for improvement and improves.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of use structures simply, is easy to
The escalator step missing detection guard method of the testing agency of maintenance, detects high reliablity.
In order to achieve the above object, this invention takes following technical schemes:
A kind of escalator step missing detection guard method, mainly comprises the steps that
A. signal acquisition: be arranged at the step revolution of escalator one by step upper edge trigger first close to sensing
Device, in the second proximity sensor of one face gear teeth of side setting of the main drive sprocket of step chains, escalator operation,
The pulse signal that first proximity sensor and the second proximity sensor generate is sent to the control system of escalator；
B. step deletion determines: the pulse signal of comparison the first proximity sensor and the second proximity sensor, when the first close biography
In the time interval for adjacent two pulse that sensor issues, the umber of pulse that the second proximity sensor issues is more than threshold value, then sentences
It is set to step deletion and executes step C；
C. escalator start and stop.
In the step A of the escalator step missing detection guard method, first proximity sensor is provided with
Two, one of them is arranged at the step revolution of the upper leveling of escalator, and the lower leveling of escalator is arranged in another
Step revolution at.
In the step B of the escalator step missing detection guard method, the pulse of two the first proximity sensors
Signal is compared with the pulse signal of the second proximity sensor respectively, as long as once comparison display step deletion, is determined as ladder
Grade lacks and executes step C.
The speed of step is gradually in the step C of the described escalator step missing detection guard method, in shutdown process
Decrease up to stopping.
In the escalator step missing detection guard method, the threshold value refers to the one of main drive sprocket excircle
The number of gear teeth for being included on the section circular arc isometric with step.
In the escalator step missing detection guard method, first proximity sensor and the second close sensing
Device is all made of connecting plate and the fixed frame of escalator is connected and fixed.
The utility model has the advantages that
The present invention provides a kind of escalator steps to lack detection guard method, using two proximity sensors respectively to step
The time interval for adjacent two pulse for being scanned with the gear teeth of main drive sprocket, and being issued by the first proximity sensor
Umber of pulse that interior second proximity sensor issues determines step deletion situation, due to step chains moving distance and main drive sprocket
The distance that outer turns over is equal, therefore regardless of step speed, which should be fixed threshold value, and detection can
By property height, and only need the first proximity sensor and the second proximity sensor to be fixed on corresponding position, structure simply,
It is easily installed and safeguards.
Detailed description of the invention
Fig. 1 is the arrangement of the first proximity sensor in escalator step provided by the invention missing detection guard method
Figure.
Fig. 2 is the arrangement of the second proximity sensor in escalator step provided by the invention missing detection guard method
Figure.
Fig. 3 is the installation of the first proximity sensor in escalator step provided by the invention missing detection guard method
Structure chart.
Fig. 4 is the installation of the second proximity sensor in escalator step provided by the invention missing detection guard method
Structure chart.
Fig. 5 is the signal graph of the first proximity sensor and the second proximity sensor, wherein detection signal A is at upper leveling
The signal of first proximity sensor, detection signal B are the signals of the first proximity sensor at lower leveling, and detection signal C is the
The signal of two proximity sensors.
Specific embodiment
The present invention provides a kind of escalator step missing detection guard method, to make the purpose of the present invention, technical solution
And effect is clearer, clear, the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that this
Place is described, and specific examples are only used to explain the present invention, is not intended to limit the present invention.
Fig. 1-5 is please referred to, it mainly includes following step that the present invention, which provides a kind of escalator step missing detection guard method,
It is rapid:
A. signal acquisition: be arranged at 90 revolution of step of escalator one by step upper edge trigger first close to sensing
The second proximity sensor 2 of a face gear teeth, escalator fortune is arranged in the side of the main drive sprocket 91 of step chains in device 1
When row, the pulse signal that the first proximity sensor and the second proximity sensor generate is sent to the control system of escalator.
When step is mobile, when the first proximity sensor present position is passed through in the upper edge of a step, one will be triggered
Secondary first proximity sensor, to generate pulse signal；Similarly, when main drive sprocket rotates, whenever a gear teeth pass through second
When proximity sensor present position, second proximity sensor will be triggered, to generate pulse signal.First proximity sensor
It is contactless sensor with the second proximity sensor, will not be used there is a phenomenon where spring failure in the prior art
Life and reliability is higher.
Specifically, first proximity sensor 1 and the second proximity sensor 2 are all made of connecting plate 3 and escalator
Fixed frame 92 is connected and fixed.Without other linkage mechanisms, structure is simple, and installation and maintenance are easy.
B. step deletion determines: the pulse signal of comparison the first proximity sensor and the second proximity sensor connects when first
In the time interval T for adjacent two pulse that nearly sensor issues, the umber of pulse X that the second proximity sensor issues is more than threshold
Value, then be determined as step deletion and execute step C.
Preferably, there are two the settings of the first proximity sensor 1, the upper leveling of escalator is arranged in one of them
At step revolution, another is arranged at the step revolution of the lower leveling of escalator.When comparing, two first close biographies
The pulse signal of sensor is compared with the pulse signal of the second proximity sensor respectively, as long as once comparison display step deletion,
Then it is determined as step deletion and executes step C.
Due to might have the generation of interference signal in the course of work, and the presence of interference signal may cause erroneous judgement, from
And the reliability of detection is reduced, two the first proximity sensors are set herein, and compare respectively with the second proximity sensor, only
When having interference component in the signal of two the first proximity sensors and leading to erroneous judgement, it just will cause erroneous judgement, reduce
It judges odds by accident, improves the reliability of detection.And when not interfering with, if being only arranged one first close to sensing
Device, the position for lacking step, which can at most rotate one week, to be just found, and risk is higher, and setting two can be mobile the maximum
Distance is reduced to half, improves safety.
Specifically, the threshold value refers to institute on one section of circular arc isometric with step L of 91 excircle of main drive sprocket
The number of gear teeth for including.
Due to the speed of step chains and the linear velocity of ladder sprocket wheel excircle be it is identical, the every movement of step chains is certain
Distance, ladder sprocket wheel excircle just can rotate identical distance, and the gear teeth that this section of distance is included can successively trigger second and connect
Nearly sensor, to generate the pulse of respective numbers, that is to say, that the moving distance of step is issued with the second proximity sensor
Number of pulses is directly proportional and ratio is fixed.And in the time interval T between adjacent two pulse of the first proximity sensor, ladder
The mobile distance of grade chain is step L, in the case where step does not lack, regardless of step speed, in time interval T
X value is to be fixed as threshold value, if step deletion, time interval T can be elongated, and X value can exceed threshold value.It is carried out using this method
Determine, determines that result is not influenced by the speed of service, high reliablity.
C. escalator start and stop.
Preferably, the speed of step gradually decreases until stopping in shutdown process.Prevent step from stopping suddenly and causing just
It is fallen down in the passenger for taking escalator.
In conclusion escalator step missing detection guard method, using two proximity sensors respectively to step
The time interval for adjacent two pulse for being scanned with the gear teeth of main drive sprocket, and being issued by the first proximity sensor
Umber of pulse that interior second proximity sensor issues determines step deletion situation, due to step chains moving distance and main drive sprocket
The distance that outer turns over is equal, therefore regardless of step speed, which should be fixed threshold value, and detection can
By property height, and the first proximity sensor and the second proximity sensor is only needed to be simply secured to corresponding position, structure
Simply, it is easily installed and safeguards.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to protection scope of the present invention.
Claims (6)
1. a kind of escalator step missing detection guard method, which is characterized in that mainly comprise the steps that
A. signal acquisition: be arranged at the step revolution of escalator one by step upper edge trigger first close to sensing
Device, in the second proximity sensor of one face gear teeth of side setting of the main drive sprocket of step chains, escalator operation,
The pulse signal that first proximity sensor and the second proximity sensor generate is sent to the control system of escalator；
B. step deletion determines: the pulse signal of comparison the first proximity sensor and the second proximity sensor, when the first close biography
In the time interval for adjacent two pulse that sensor issues, the umber of pulse that the second proximity sensor issues is more than threshold value, then sentences
It is set to step deletion and executes step C；
C. escalator start and stop.
2. escalator step missing detection guard method according to claim 1, which is characterized in that described in step A
There are two the settings of first proximity sensor, one of them is arranged at the step revolution of the upper leveling of escalator, another sets
It sets at the step revolution of the lower leveling of escalator.
3. escalator step missing detection guard method according to claim 2, which is characterized in that in step B, two
The pulse signal of first proximity sensor is compared with the pulse signal of the second proximity sensor respectively, as long as once comparison display
Step deletion is then determined as step deletion and executes step C.
4. escalator step missing detection guard method according to claim 1, which is characterized in that in step C, start and stop
The speed of step gradually decreases until stopping in the process.
5. escalator step missing detection guard method according to claim 1, which is characterized in that the threshold value refers to
The number of gear teeth for being included on one section of circular arc isometric with step of main drive sprocket excircle.
6. escalator step missing detection guard method according to claim 1, which is characterized in that described first is close
Sensor and the second proximity sensor are all made of connecting plate and the fixed frame of escalator is connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810991008.7A CN108996380A (en) | 2018-08-28 | 2018-08-28 | A kind of escalator step missing detection guard method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810991008.7A CN108996380A (en) | 2018-08-28 | 2018-08-28 | A kind of escalator step missing detection guard method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562835A (en) * | 2019-10-14 | 2019-12-13 | 重庆春林德奥电气有限公司 | Escalator control system |
| CN111090048A (en) * | 2019-12-19 | 2020-05-01 | 重庆大学 | Vehicle-mounted data self-adaptive time interval transmission method for new energy automobile |
| CN111498665A (en) * | 2020-05-14 | 2020-08-07 | 上海爱登堡电梯江苏有限公司 | Escalator and sidewalk step missing detection device and detection method thereof |
| CN111847207A (en) * | 2020-07-24 | 2020-10-30 | 广州广日电梯工业有限公司 | Escalator step operation safety detection device and detection method thereof |
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| CN103879874A (en) * | 2012-12-19 | 2014-06-25 | 上海三菱电梯有限公司 | Step deficiency detection device for passenger conveying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562835A (en) * | 2019-10-14 | 2019-12-13 | 重庆春林德奥电气有限公司 | Escalator control system |
| CN111090048A (en) * | 2019-12-19 | 2020-05-01 | 重庆大学 | Vehicle-mounted data self-adaptive time interval transmission method for new energy automobile |
| CN111090048B (en) * | 2019-12-19 | 2021-09-24 | 重庆大学 | Vehicle-mounted data self-adaptive time interval transmission method for new energy automobile |
| CN111498665A (en) * | 2020-05-14 | 2020-08-07 | 上海爱登堡电梯江苏有限公司 | Escalator and sidewalk step missing detection device and detection method thereof |
| CN111498665B (en) * | 2020-05-14 | 2022-07-19 | 上海爱登堡电梯江苏有限公司 | Escalator and sidewalk step missing detection device and detection method thereof |
| CN111847207A (en) * | 2020-07-24 | 2020-10-30 | 广州广日电梯工业有限公司 | Escalator step operation safety detection device and detection method thereof |
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