CN111591848A - Elevator floor recognition system and method - Google Patents
Elevator floor recognition system and method Download PDFInfo
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- CN111591848A CN111591848A CN202010476959.8A CN202010476959A CN111591848A CN 111591848 A CN111591848 A CN 111591848A CN 202010476959 A CN202010476959 A CN 202010476959A CN 111591848 A CN111591848 A CN 111591848A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
-
- 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
- B66B5/0037—Performance analysers
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses an elevator floor recognition system and method, which comprises a sensor module, an acquisition module and a processing module, wherein the sensor module comprises a magnetic encoder for marking floor information and a recognizer for recognizing the marked floor information; the acquisition module is used for acquiring the magnetic signal, generating a PWM signal and outputting the PWM signal; and the processing module is used for processing and analyzing the PWM signal and identifying floor information. The floor is uniquely marked by the magnetic encoder, the magnetic sensor is adopted for identification, the magnetic encoder is small in size, simple to manufacture, low in price and independent in floor information, the floor staggering is avoided, the influence of power failure on floor identification is overcome, the magnetic sensor has the characteristics of quick identification and difficulty in being influenced by the outside, and the elevator floor identification method is convenient to operate and implement, quick in response and suitable for improvement and popularization of the existing elevator.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator floor identification system and method.
Background
Along with the pace of the urbanization process of China, high-rise residential houses are more and more besides commercial office buildings, the significance of the elevator as a vertical transportation means is particularly obvious, and the accurate determination of the elevator floor is related to the personal safety of the public.
In the prior art, floor identification generally has several ways: (1) the floor reached by the car is calculated by reading the number of turns of the traction machine rotation, the disadvantage is: when the 'steel wire rope slipping' system fails, the elevator is easy to generate phenomena such as layer disorder, layer falling and the like; meanwhile, the position of the elevator car is determined by adding an encoder device on an accelerator, for example, the Chinese patent of the publication No. CN102344063A discloses an absolute encoder system arranged on a speed limiter, and the position of the elevator car is determined by utilizing the fixed connection of a speed limiter steel wire rope and the elevator car, which has the following defects: the method needs to add an absolute encoder on the basis of the existing elevator system, and the cost is relatively high; and when the elevator outage, the function of encoder will become invalid, can't solve the staggered floor problem, and install the encoder degree of difficulty additional big, it is not convenient that the maintenance is replaced.
(2) Through the weight acceleration discernment floor, chinese utility model patent like bulletin number CN208361622U discloses an elevator floor acquisition device, requires to the sensor when the floor is higher, and simultaneously, gravity sensor is relatively poor to environmental suitability, and when the floor takes place to be in disorder, can't just in time call the stop floor near, floor information can't acquire floor information during the outage.
(3) Infrared sensor discernment floor, like notice number CN 207108164U's utility model patent discloses an infrared signal passageway scan coding square hole reads floor information in intelligence elevator floor code reader elevator steel band cooperation elevator for the elevator code. The infrared sensor submits to the environment requirements, the cost of the steel belt floor information improvement method is too high, the products of the infrared technology have directionality, the emitter must be aligned with the receiver, and no obstacle can be arranged in the middle.
In addition, a study has also provided that a magnetic strip and an electromagnetic radio frequency device are arranged on the top layer or the bottom layer to be used as floor auxiliary verification, but the specific floor is determined according to a counter, namely, interdependent relations exist among the floors, once the elevator has a power failure fault or the system is disordered, the position of the car needs to be repositioned by the system, the car needs to return to the top layer or the bottom layer for verification during verification, and the working efficiency and the safety are both low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an elevator floor identification system and method, is suitable for the conventional elevator system, realizes unique and corresponding marking and identification on elevator floors, has small volume and high identification speed, is simple, solves the problems of easy layer dislocation, high environmental requirement, time and labor waste of the installation of an identification system, difficult maintenance and detection and the like in the prior art, and solves the problems of elevator layer dislocation and system disorder caused by power failure.
An elevator floor recognition system comprises a sensor module, an acquisition module and a processing module, wherein the sensor module comprises a magnetic encoder and a recognizer, the magnetic encoder comprises a plurality of magnetic stripes with N poles and S poles, and floors are encoded in a mode that the plurality of magnetic stripes are arranged and combined according to different polarities; the identifier is arranged on the elevator car and used for reading the magnetic signal of the magnetic encoder;
the acquisition module is used for acquiring the magnetic signals obtained by the identifier, generating PWM signals and outputting the PWM signals;
the processing module is used for analyzing the PWM signal, identifying the current floor and judging whether the target floor is reached.
Further, the identifier includes: a magnetoresistive sensor for reading a magnetic signal of the magnetic encoder; a decoder for converting the magnetic signal into digital information.
Further, the identifier further comprises a CAN bus for exchanging data communication.
Further, the magnetoresistive sensor is selected from a HALL sensor, a TMR tunnel magnetoresistive sensor, an AMR magnetoresistive sensor or a GMR magnetoresistive sensor.
Further, the PWM wave is pulse width modulated, i.e., a pulse waveform with a variable duty ratio.
Furthermore, the magnetic encoder also comprises a base layer, and the magnetic stripe is fixed on the base layer in a pasting mode.
Further, the magnetic strips have the same length and width, a certain distance is kept between every two adjacent magnetic strips, and the distance between the adjacent magnetic strips in the same pole is larger than the distance between the adjacent magnetic strips in different poles.
Furthermore, the width of each magnetic strip is 1-2cm, the length of each magnetic strip is 2-3cm, and the distance between the magnetic strips is 0-3 cm.
Further, the distance between the adjacent magnetic strips with the same polarity is 1.5-3 cm.
Furthermore, the number of the floor number codes is 2n, wherein n is the number of the magnetic strips.
Furthermore, the coded information formed by arranging and combining the magnetic stripes is unique, and the coded information is recorded in a storage sub-module to form a floor database.
Further, the magnetic encoder is arranged on the floor leveling position or the positions of an upper floor and a lower floor.
Furthermore, the magnetic stripe in the magnetic encoder is a rubber magnet or a self-made magnetic film.
Further, the magnetic resistance sensors are arranged at the top and the bottom of the elevator car.
Further, the distance between the magneto-resistive sensor and the encoder is kept within 2 cm.
Furthermore, the acquisition module comprises a signal conditioning circuit, an operational amplifier circuit, a latch and a push-pull output circuit.
Furthermore, the magnetic encoder is arranged on the floor leveling position, the magnetic resistance sensors are arranged at the top and the bottom of the elevator car, when the elevator goes upwards, the magnetic resistance sensors at the top of the elevator car firstly identify the information of the magnetic encoder, and the identification information of the magnetic resistance sensors is compared with the cached target floor information and analyzed to be the same, so that the target floor arrives; when the elevator descends, the magnetic resistance sensor at the bottom of the elevator car firstly identifies the information of the magnetic encoder, and the identification information of the magnetic resistance sensor is compared with the information of the cached target floor for analysis, so that the target floor arrives.
Further, when a floor fault occurs, the current floor recognition result may be verified with reference to previously recognized floor information.
Furthermore, the magnetic encoders are arranged on an upper floor and a lower floor, when the elevator car moves upwards, the magnetic encoder of the lower floor is read by the magnetic sensor at the top of the car, when the magnetic encoder of the upper floor is read by the magnetic sensor at the top of the car and the magnetic encoder of the lower floor is read by the magnetic sensor at the bottom of the car, floors are checked, and the arrival of the target floors is confirmed; the magnetic encoder is arranged on an upper floor and a lower floor, when the elevator car moves downwards, the magnetic encoder of the upper floor is read by the car bottom sensor, when the magnetic encoder of the upper floor is read by the car top sensor and the magnetic encoder of the lower floor is read by the car bottom sensor, floors are verified, and the arrival of the target floors is confirmed;
furthermore, the acquisition module comprises a signal conditioning circuit, an operational amplifier circuit, a latch and a push-pull output circuit.
An elevator floor identification method, comprising the steps of:
(1) arranging and combining a plurality of magnetic strips with N poles and S poles according to different polarities, coding floors, and installing the combined magnetic strips at the positions of the floors or the positions of upper and lower floors;
(2) reading the magnetic signal of the magnetic encoder by an identifier disposed on the elevator car, the identifier comprising a magnetoresistive sensor and a decoder installation;
(3) decoding and analyzing the magnetic signal read by the identifier to obtain current floor information, comparing the cached target floor coding information with the current floor information, judging whether the target floor is reached, and outputting the current floor information.
As described above, the elevator floor recognition system and method of the present invention have the following advantages:
(1) the magnetic encoder enables the magnetic stripes with N poles and S poles to uniquely mark floors in a way of arrangement and combination, so that the floors are mutually independent, the sensitivity is high, the size of the magnetic encoder is small, floor errors caused by single floor errors are avoided, and the problem of floor disorder after power failure is avoided;
(2) the recognizer adopts a magnetoresistive sensor, the recognition reaction is rapid, the accuracy is high, the influence of dust, vibration and environmental factors is not easily received, the recognition speed is increased, and the safety factor is high;
(3) the magnetic encoder is simple to edit and manufacture, low in price and easy to operate, and is suitable for the existing elevator to be additionally installed and reconstructed;
(4) the identification system has a checking function, so that the occurrence of a wrong floor is prevented, if the wrong floor occurs, the next floor can be automatically adjusted, the checking is not required to enable the lift car to return to the top floor or the bottom floor, the time is saved, and unnecessary turning-back is avoided.
Drawings
Fig. 1 is a schematic structural view of an elevator floor recognition system of the present invention;
fig. 2 is a floor coding method of an 8-floor high elevator in the embodiment of the invention;
FIG. 3 is a schematic view of an embodiment of the present invention with a magnetic encoder positioned in a flat layer position;
fig. 4 is an identification diagram of a magnetic encoder disposed on an upper floor and a lower floor according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, an elevator floor recognition system includes a sensor module, an acquisition module, and a processing module, wherein the sensor module includes a magnetic encoder and a recognizer, the magnetic encoder includes a plurality of magnetic stripes having N poles and S poles, and the floors are encoded by arranging and combining the plurality of magnetic stripes according to different polarities; the identifier is arranged on the elevator car and used for reading a magnetic signal of a magnetic strip of the magnetic encoder;
the acquisition module is used for acquiring the magnetic signals obtained by the identifier, generating PWM signals and outputting the PWM signals;
and the processing module is used for analyzing the PWM signal, identifying the current floor and judging whether the current floor reaches the target floor.
Specifically, the identifier comprises a magneto-resistive sensor for reading the magnetic signal of the magnetic encoder; the decoder is used for converting the magnetic signal into digital information; the CAN bus is used for exchanging data communications.
Specifically, the magnetoresistive sensor is selected from a Hall sensor, a TMR tunnel magnetoresistive sensor, an AMR magnetoresistive sensor or a GMR magnetoresistive sensor.
The elevator floor marking system adopts the magnetic strips to carry out unique coding marking on floors, the identifier adopts the magnetic resistance sensor to obtain floor magnetic signals, the response is rapid, the elevator floor marking system is not influenced by environmental factors, the system structure is simple, the elevator floor marking system is convenient to install on the elevator in the prior art, and the maintenance is time-saving and labor-saving.
As shown in fig. 2, an elevator building with 8 floors is taken as an example, each floor corresponds to encoded information, the magnetic encoder includes a plurality of magnetic strips with N poles and S poles for encoding the floors in a permutation and combination manner, and the magnetic encoder further includes a base layer, and the magnetic strips are fixed on the base layer in a sticking manner.
Specifically, the arrangement and combination mode of the magnetic strips on each layer is unique, and the 1-floor magnetic strip code NNN, the 2-floor magnetic strip code NNS, the 3-floor magnetic strip code NSN, the 4-floor magnetic strip code NSS, the 5-floor magnetic strip code SNN, the 6-floor magnetic strip code SNS, the 7-floor magnetic strip code SSN and the 8-floor magnetic strip code SSS are adopted.
Specifically, the magnetic stripes have the same length and width, a certain distance is kept between every two adjacent magnetic stripes, and the distance between adjacent coding strips in the same pole is larger than the distance between adjacent coding strips in different poles.
Specifically, the total floor number is 2 of the number of the coding magnetic stripesnAnd n is the number of the magnetic coding strips.
Specifically, the coded information is recorded in the storage submodule to form a floor database.
Specifically, the width of each magnetic strip is 1-2cm, the length of each magnetic strip is 2-3cm, and the distance between the magnetic strips is 0-3 cm.
Specifically, the distance between adjacent magnetic strips in the same pole is 1.5-3 cm.
Specifically, the magnetic stripe in the magnetic encoder is a rubber magnet or a self-made magnetic film.
The magnetic encoder is characterized in that the magnetic encoder is simple in magnetic stripe preparation and low in cost, the prepared magnetic stripe is adhered to the substrate layer according to the arrangement and combination mode, and then the magnetic encoder is installed on the floor flat layer position or the upper and lower floor slabs, so that the installation and maintenance are simple; the distance between adjacent homopolar magnetic stripes is larger than the distance between adjacent coding strips of different poles, so that floor information errors caused by the missed reading of the adjacent homopolar magnetic stripes can be prevented, the coding information of each floor is unique and mutually independent, no fault floor information exists, the floor information has uniqueness and independence and is not interfered with each other, the floor information of the elevator cannot be disordered even if power failure or elevator faults occur, and the safety coefficient is high;
it can be seen by the above embodiment that the magnetic encoder carries out only marking to the floor, is difficult for the staggered floor, and easy operation is with low costs, is fit for current elevator and installs additional the popularization.
In an embodiment 3, referring to fig. 3, the magnetic encoder is arranged at the floor leveling position, the magnetoresistive sensors are arranged at the top and the bottom of the elevator car, when the elevator goes upwards, the magnetoresistive sensors at the top of the elevator car firstly identify the information of the magnetic encoder, and the identification information of the magnetoresistive sensors is compared with the cached target floor information and analyzed to be the same, so that the target floor arrives; when the elevator descends, the magnetic encoder information is firstly identified by the magnetic resistance sensor at the bottom of the elevator car, the identification information of the magnetic resistance sensor and the cached target floor information are compared and analyzed to be the same, then the target floor arrives, and when an accident error occurs, the current floor identification result can be verified by referring to the previously identified floor information.
Specifically, the distance between the magnetic resistance sensor and the magnetic encoder is kept within 2 cm.
Specifically, the acquisition module comprises a signal conditioning circuit, an operational amplifier circuit, a latch and a push-pull output circuit.
In another embodiment 4, referring to fig. 4, the magnetic encoders are installed on the upper and lower floors, the magnetic sensors are installed on the top and bottom of the elevator car, when the elevator car goes up, the magnetic encoder on the top of the car reads the magnetic encoder on the lower floor, when the magnetic encoder on the top of the car reads the magnetic encoder on the upper floor and the magnetic encoder on the bottom of the car reads the magnetic encoder on the lower floor, the floor is verified, and the arrival at the target floor is confirmed; when the elevator car descends, the car bottom sensor reads the upper floor magnetic encoder, and when the car top sensor reads the upper floor magnetic encoder and the car bottom sensor reads the lower floor magnetic encoder, the floors are verified and the arrival of the target floors is confirmed;
embodiment 5 referring to fig. 1-4, an elevator floor identification method includes the steps of:
(1) arranging and combining a plurality of magnetic strips with N poles and S poles according to different polarities, coding floors, and installing the combined magnetic strips at the positions of the floors or the positions of upper and lower floors;
(2) reading a magnetic signal of a magnetic strip of the magnetic encoder by an identifier disposed on an elevator car, the identifier comprising a magnetoresistive sensor and a decoder installation;
(3) decoding and analyzing the magnetic signal read by the identifier to obtain current floor information, comparing the cached target floor coding information with the current floor information, judging whether the target floor is reached, and outputting the current floor information.
The elevator floor recognition system and method in the above description are the result of the inventor's actual implementation, and it should not be considered that the specific embodiment of the present invention is limited to this, for example, the position of the magnetic encoder is not limited to the flat floor or the upper and lower floor, but it will be apparent to those skilled in the art that several simple evolutions or substitutions can be made without departing from the spirit of the present invention, and the protection scope of the claims of the present invention is also regarded as being filed more than the present invention.
Claims (10)
1. The elevator floor recognition system is characterized by comprising a sensor module, an acquisition module and a processing module
The sensor module comprises a magnetic encoder and an identifier, the magnetic encoder comprises a plurality of magnetic strips with N poles and S poles, and the floors are encoded in a mode that the magnetic strips are arranged and combined according to different polarities; the identifier is arranged on the elevator car and used for reading a magnetic signal of a magnetic strip of the magnetic encoder;
the acquisition module is used for acquiring the magnetic signals obtained by the identifier, generating PWM signals and outputting the PWM signals;
the processing module is used for analyzing the PWM signal, identifying the current floor and judging whether the target floor is reached.
2. The identification system of claim 1, wherein the identifier comprises:
a magnetoresistive sensor for reading a magnetic signal of the magnetic encoder;
a decoder for converting the magnetic signal into digital information.
3. The identification system of claim 1, wherein said magnetic encoder further comprises a substrate, said magnetic strip adhesively secured to said substrate.
4. The identification system of claim 3, wherein the plurality of magnetic strips have the same length and width as each other, a spacing is maintained between adjacent magnetic strips, and the spacing between adjacent magnetic strips in the same polarity is greater than the spacing between adjacent magnetic strips in different polarities.
5. The identification system of claim 1, wherein the magnetic encoder is disposed at a floor level position or at a position of an upper floor and a lower floor.
6. The identification system of claim 3, wherein the magnetic strip is a rubber magnet or a self-made magnetic film.
7. The identification system of claim 2, wherein the magnetoresistive sensors are mounted on the top and bottom of an elevator car.
8. An identification system as claimed in claim 1, characterized in that the distance of the magnetoresistive sensor from the encoder is kept within 2 cm.
9. The identification system of claim 1, wherein the acquisition module comprises a signal conditioning circuit, an operational amplifier circuit, a latch, and a push-pull output circuit.
10. An elevator floor identification method, characterized by comprising the steps of:
(1) arranging and combining a plurality of magnetic strips with N poles and S poles according to different polarities, coding floors, and installing the combined magnetic strips at the positions of the floors or the positions of upper and lower floors;
(2) reading a magnetic signal of a magnetic strip of the magnetic encoder by an identifier disposed on an elevator car, the identifier comprising a magnetoresistive sensor and a decoder installation;
(3) decoding and analyzing the magnetic signal read by the identifier to obtain current floor information, comparing the cached target floor coding information with the current floor information, judging whether the target floor is reached, and outputting the current floor information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112320516A (en) * | 2020-09-09 | 2021-02-05 | 上海昶屹机电科技有限公司 | Device and method for identifying stopping floor and speed of elevator car |
| CN112340559A (en) * | 2020-11-23 | 2021-02-09 | 武汉市威斯德智能装备有限公司 | Elevator power failure emergency rescue blind floor identification system |
| CN112723070A (en) * | 2020-12-23 | 2021-04-30 | 沈阳格林豪森物业管理有限公司 | Elevator running speed monitoring system and method |
| CN112723067A (en) * | 2020-12-23 | 2021-04-30 | 沈阳格林豪森物业管理有限公司 | Elevator floor monitoring system and method |
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