CN112408170A - Multifunctional elevator light curtain protection device - Google Patents
Multifunctional elevator light curtain protection device Download PDFInfo
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- CN112408170A CN112408170A CN202011275893.2A CN202011275893A CN112408170A CN 112408170 A CN112408170 A CN 112408170A CN 202011275893 A CN202011275893 A CN 202011275893A CN 112408170 A CN112408170 A CN 112408170A
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- light curtain
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- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000036541 health Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000035807 sensation Effects 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
Abstract
The invention discloses a multifunctional elevator light curtain protection device, which comprises a light curtain MCU (microprogrammed control unit) connected with an elevator control system through RS485 communication, wherein the elevator control system directly reads light curtain data acquired by the light curtain MCU to judge whether a light curtain is shielded and send out a door opening instruction; the light curtain controlled by the light curtain MCU is powered by a DC24V power supply communicated by RS 485. The invention can cancel the power control box of the light curtain, not only can reduce the cost and the power consumption, but also can improve the response speed of the light curtain protection.
Description
Technical Field
The invention relates to a multifunctional elevator light curtain protection device, and belongs to the technical field of elevators.
Background
The elevator light curtain is a safety protection device for elevator door made by utilizing photoelectric induction principle, and is applicable to all elevators to protect the safety of passengers getting in and out of elevator. The traditional elevator light curtain consists of a power supply control box, an infrared transmitter and a receiver which are arranged on two sides of an elevator car door, and a special flexible cable. A plurality of infrared transmitting tubes are arranged in the light curtain transmitting end, the transmitting receiving tubes are sequentially opened under the control of the MCU, and light rays transmitted by one transmitting head are received by a plurality of receiving heads to form multi-path scanning. By such a continuous scanning of the door area from top to bottom, a dense infrared protective light curtain is formed. When any beam of light is blocked, the light curtain judges that the light is blocked because the photoelectric conversion cannot be realized, and therefore an interrupt signal is output. The interrupt signal is processed and converted (traditional light curtain) by the power supply control box into a dry contact signal or a high-low level signal, the control system outputs a door opening signal immediately after receiving the signal given by the light curtain, the car door stops closing and rotates reversely to open until the elevator door can be normally closed after a passenger or an obstacle leaves a warning area, and therefore the purpose of safety protection is achieved, and the occurrence of accidents of people being caught in the elevator can be avoided.
However, the conventional elevator light curtain has the following problems because a special power supply control box is adopted for power supply and signal transmission:
1. the power control box has low energy conversion rate and large energy consumption;
2. the hardware cost is high;
3. the data transmission is delayed, and the response speed is slow.
Disclosure of Invention
The invention aims to provide a multifunctional elevator light curtain protection device. The invention can cancel the power control box of the light curtain, not only can reduce the cost and the power consumption, but also can improve the response speed of the light curtain protection.
The technical scheme of the invention is as follows: the utility model provides a multi-functional elevator light curtain protection device which characterized in that: the elevator door opening device comprises a light curtain MCU connected with an elevator control system through RS485 communication, wherein the elevator control system directly reads light curtain data collected by the light curtain MCU to judge whether a light curtain is shielded and send a door opening instruction; the light curtain controlled by the light curtain MCU is powered by a DC24V power supply communicated by RS 485.
Among the foretell multifunctional elevator light curtain protection device, built-in electric motor car shelters from the model data in the light curtain MCU, scans the during operation at the light curtain, shelters from the model data and compares with built-in electric motor car according to the actual data of sheltering from who gathers to judge whether there is the electric motor car to get into, and pack into communication data with the result of judging and send elevator control system through the RS485 communication, if the electric motor car gets into, then elevator control system sends the instruction of opening the door and triggers audio alert device and remind the passenger to shift out the electric motor car.
In the above multifunctional elevator light curtain protection device, the electric vehicle shielding model data is a quantity-time curve composed of shielding time and shielding quantity, that is, a shielding quantity variation curve varying with time.
In the multifunctional elevator light curtain protection device, a gyroscope sensor is integrated on a PCB of the light curtain, the gyroscope sensor reads a running speed curve and car door vibration conditions of an elevator car door when the elevator is stopped and is opened and closed, and reads the running speed curve, horizontal vibration and vertical vibration of the elevator when the elevator is running; the light curtain MCU converts the data read by the gyroscope sensor into RS485 communication data and transmits the data to the elevator control system, and the elevator control system can perform statistical analysis according to the uploaded data to generate the running health condition of the elevator.
In the multifunctional elevator light curtain protection device, when in installation and debugging, an elevator technician debugs the whole comfortable sensation of the elevator according to the data counted by the elevator control system.
In the multifunctional elevator light curtain protection device, in a normal use stage, the elevator control system sends statistical data to the remote monitoring platform through the Internet of things system, and corresponding basis for maintenance according to needs is provided for maintenance personnel.
Compared with the prior art, the light curtain MCU is communicated with the elevator central control system in an RS485 communication mode, and the light curtain can be supplied with power by using the DC24V power supply in the RS485 communication, so that a special power supply control box can be omitted. Because the DC24V power supply of elevator control system is very stable switching regulated power supply, can provide good power supply for the light curtain, reduced the intermediate link of energy conversion, can reduce the energy consumption, and directly reduced the hardware cost, in addition, DC24V power supply can change through high low potential, increases high low level identification circuit in the light curtain, realizes the automatic identification car front and back door light curtain (when the elevator has front and back door control needs). Because the light curtain MCU is connected with the elevator control system by RS485 communication, the system directly reads the communication data to judge whether the light curtain is shielded and sends out a door opening instruction to protect passengers. The main advantages of adopting the RS485 communication mode to connect with the control system are that: a, the response speed of data communication transmission is higher than that of the DI point which is output by adopting a common dry contact and then input into a system; and b, the communication data can integrate a lot of information, so that conditions are provided for realizing multiple functions.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
fig. 2 is a normal elevator operation curve in the embodiment;
fig. 3 is an elevator operation curve in which an abnormality occurs in the embodiment.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. A multifunctional elevator light curtain protection device is shown in figure 1: the elevator door opening device comprises a light curtain MCU connected with an elevator control system through RS485 communication, wherein the elevator control system directly reads light curtain data collected by the light curtain MCU to judge whether a light curtain is shielded and send a door opening instruction; the light curtain controlled by the light curtain MCU is powered by a DC24V power supply communicated by RS 485.
The built-in electric motor car shelters from model data in the light curtain MCU, when the light curtain scans the work, shelters from model data with built-in electric motor car according to the actual data of sheltering from of gathering and compares to judge whether there is the electric motor car to get into, and pack into communication data and send elevator control system through the RS485 communication with the result of judging, if the electric motor car gets into, then elevator control system sends the instruction of opening the door and triggers audio alert device and reminds the passenger to shift out the electric motor car.
The electric vehicle shielding model data is a quantity-time curve composed of shielding time and shielding quantity. When the samples are collected, various types of electric vehicles (the electric vehicles should be driven by a driver or a person pushed by the driver) can be used for passing through the light curtain at a set speed, the shielding number of the receiving heads in the light curtain is collected at fixed time intervals, and the shielding number is fitted into a curve. At present, the existing light curtain only collects whether the shielding exists, and the length of the electric vehicle and the bicycle is approximate, so that the judgment cannot be carried out through continuous shielding time. The shielding model is adopted to better distinguish the electric vehicle due to the fact that the outline of the bicycle is more hollow and the shielding quantity of the receiving heads of the light curtain is obviously less when the bicycle passes through the shielding model. When the electric vehicle passes through the light curtain, the shielding number is collected in real time, when the shielding exceeds a certain threshold value continuously, the comparison program is started, the shielding number and the shielding time are fitted into a curve, and the shielding time of various electric vehicles in the model data is subjected to proportional pull-up or amplification according to the continuous shielding time and the shielding time of the electric vehicles, so that the time axis coordinates are matched, and then the comparison quantity axis is judged to be the electric vehicle after the matching degree reaches the set threshold value. In order to eliminate the influence of comparison of a driver or a person who pushes a vehicle in a model, when model data are manufactured, the highest shielding number is used as a central line, and rectangular frames are drawn towards two sides. When the comparison is carried out, the matching of the curves in the rectangular frame is removed, so that the problem of inaccurate matching caused by different shapes and dresses of drivers or pushers can be solved.
A gyroscope sensor is integrated on a PCB of the light curtain, the gyroscope sensor reads the running speed curve and car door vibration condition of the elevator car door when the elevator is stopped and switches on and off, and reads the running speed curve, horizontal vibration and vertical vibration of the elevator when the elevator is running; the light curtain MCU converts the data read by the gyroscope sensor into RS485 communication data and transmits the data to the elevator control system, and the elevator control system can perform statistical analysis according to the uploaded data to generate the running health condition of the elevator. Because the car door and the car are movably mounted, a movable gap must exist between the car door and the car, when the elevator runs, the vibration of the elevator car can be amplified when being transmitted to the car door, and therefore the gyroscope sensor is arranged on the PCB (positioned on the car door) of the light curtain, so that the vibration quantity of the car running can be more sensitive, and the vibration condition can be better reflected.
And when the elevator is installed and debugged, the elevator technician debugs the whole comfortable sensation of the elevator according to the data counted by the elevator control system.
In the normal use stage, the elevator control system sends the statistical data to the remote monitoring platform through the internet of things system, and provides corresponding basis for maintenance according to needs for maintenance personnel.
Fig. 2 is a graph of a normal operating elevator curve (time on the abscissa, unit s, velocity on the ordinate, unit m/s) formed by data measured by a gyro sensor, if the measured data forms an elevator curve as shown in fig. 3 during the commissioning or use of the elevator: two obvious jitters are found in the curve of the graph 3 through comparison, a specific abnormal position point is calculated according to time and speed to carry out corresponding inspection and adjustment, if the curve is steep and broken in the running process, abnormal parking in the running process of the elevator can be judged, and then the fault is judged and eliminated by combining with the fault record of a control system; after a period of recording accumulation and statistics, the change of the failure rate and the operation comfort of the elevator is analyzed, and the evaluation conclusion of the health condition of the elevator is comprehensively formed and is referred to by elevator maintenance and technicians. Similarly, because the gyroscope sensor is arranged in the light curtain, n operation curves for opening and closing the doors can be formed and recorded in the door opening and closing process after the elevator is stopped, and the smoothness of the operation curves can comprehensively reflect the operation conditions of the elevator car doors for reference.
Claims (6)
1. The utility model provides a multi-functional elevator light curtain protection device which characterized in that: the elevator door opening device comprises a light curtain MCU connected with an elevator control system through RS485 communication, wherein the elevator control system directly reads light curtain data collected by the light curtain MCU to judge whether a light curtain is shielded and send a door opening instruction; the light curtain controlled by the light curtain MCU is powered by a DC24V power supply communicated by RS 485.
2. The multifunctional elevator light curtain protection device of claim 1, characterized in that: the built-in electric motor car shelters from model data in the light curtain MCU, when the light curtain scans the work, shelters from model data with built-in electric motor car according to the actual data of sheltering from of gathering and compares to judge whether there is the electric motor car to get into, and pack into communication data and send elevator control system through the RS485 communication with the result of judging, if the electric motor car gets into, then elevator control system sends the instruction of opening the door and triggers audio alert device and reminds the passenger to shift out the electric motor car.
3. The multifunctional elevator light curtain protection device of claim 2, characterized in that: the electric vehicle shielding model data is a quantity-time curve composed of shielding time and shielding quantity.
4. The multifunctional elevator light curtain protection device of claim 1, characterized in that: a gyroscope sensor is integrated on a PCB of the light curtain, the gyroscope sensor reads the running speed curve and car door vibration condition of the elevator car door when the elevator is stopped and switches on and off, and reads the running speed curve, horizontal vibration and vertical vibration of the elevator when the elevator is running; the light curtain MCU converts the data read by the gyroscope sensor into RS485 communication data and transmits the data to the elevator control system, and the elevator control system can perform statistical analysis according to the uploaded data to generate the running health condition of the elevator.
5. The multifunctional elevator light curtain protection device of claim 4, characterized in that: and when the elevator is installed and debugged, the elevator technician debugs the whole comfortable sensation of the elevator according to the data counted by the elevator control system.
6. The multifunctional elevator light curtain protection device of claim 4, characterized in that: in the normal use stage, the elevator control system sends the statistical data to the remote monitoring platform through the internet of things system, and provides corresponding basis for maintenance according to needs for maintenance personnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275893.2A CN112408170A (en) | 2020-11-16 | 2020-11-16 | Multifunctional elevator light curtain protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275893.2A CN112408170A (en) | 2020-11-16 | 2020-11-16 | Multifunctional elevator light curtain protection device |
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| CN112408170A true CN112408170A (en) | 2021-02-26 |
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| CN202011275893.2A Pending CN112408170A (en) | 2020-11-16 | 2020-11-16 | Multifunctional elevator light curtain protection device |
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Citations (9)
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|---|---|---|---|---|
| CN2438698Y (en) * | 2000-08-05 | 2001-07-11 | 绵阳市天九科学技术开发有限公司 | Source for protector of infrared veiling elevator door |
| CN201415906Y (en) * | 2009-06-29 | 2010-03-03 | 广州都盛机电有限公司 | Infrared control light curtain of novel elevator door |
| CN202880635U (en) * | 2012-09-29 | 2013-04-17 | 宁波微科光电有限公司 | Elevator light curtain controller with voice prompt function |
| CN202953679U (en) * | 2012-09-28 | 2013-05-29 | 宁波微科光电有限公司 | Classified amplifying high-sensitivity elevator light curtain |
| JP2013133180A (en) * | 2011-12-26 | 2013-07-08 | Mitsubishi Electric Corp | Control device of elevator door |
| CN203877711U (en) * | 2014-03-28 | 2014-10-15 | 宁波赛福特电子有限公司 | Infrared curtain without power supply box |
| CN105026300A (en) * | 2013-03-18 | 2015-11-04 | 通力股份公司 | Elevator, light curtain for monitoring the opening of a moving door of a floor level and/or the opening of a moving door of an elevator car, and method for giving a door-open command or a door-close command in an elevator |
| CN108313846A (en) * | 2017-12-13 | 2018-07-24 | 浙江新再灵科技股份有限公司 | A kind of elevator platform velocity-measuring system and method based on gyroscope |
| CN111762649A (en) * | 2020-07-14 | 2020-10-13 | 猫岐智能科技（上海）有限公司 | Elevator article detection system and method, article detection system, elevator light curtain and elevator equipment |
-
2020
- 2020-11-16 CN CN202011275893.2A patent/CN112408170A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438698Y (en) * | 2000-08-05 | 2001-07-11 | 绵阳市天九科学技术开发有限公司 | Source for protector of infrared veiling elevator door |
| CN201415906Y (en) * | 2009-06-29 | 2010-03-03 | 广州都盛机电有限公司 | Infrared control light curtain of novel elevator door |
| JP2013133180A (en) * | 2011-12-26 | 2013-07-08 | Mitsubishi Electric Corp | Control device of elevator door |
| CN202953679U (en) * | 2012-09-28 | 2013-05-29 | 宁波微科光电有限公司 | Classified amplifying high-sensitivity elevator light curtain |
| CN202880635U (en) * | 2012-09-29 | 2013-04-17 | 宁波微科光电有限公司 | Elevator light curtain controller with voice prompt function |
| CN105026300A (en) * | 2013-03-18 | 2015-11-04 | 通力股份公司 | Elevator, light curtain for monitoring the opening of a moving door of a floor level and/or the opening of a moving door of an elevator car, and method for giving a door-open command or a door-close command in an elevator |
| CN203877711U (en) * | 2014-03-28 | 2014-10-15 | 宁波赛福特电子有限公司 | Infrared curtain without power supply box |
| CN108313846A (en) * | 2017-12-13 | 2018-07-24 | 浙江新再灵科技股份有限公司 | A kind of elevator platform velocity-measuring system and method based on gyroscope |
| CN111762649A (en) * | 2020-07-14 | 2020-10-13 | 猫岐智能科技（上海）有限公司 | Elevator article detection system and method, article detection system, elevator light curtain and elevator equipment |
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Application publication date: 20210226 |