CN110526054B - Elevator passenger detection method, controller, system and storage medium - Google Patents
Elevator passenger detection method, controller, system and storage medium Download PDFInfo
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- CN110526054B CN110526054B CN201910877512.9A CN201910877512A CN110526054B CN 110526054 B CN110526054 B CN 110526054B CN 201910877512 A CN201910877512 A CN 201910877512A CN 110526054 B CN110526054 B CN 110526054B
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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
- B66B1/34—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
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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
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/002—Indicators
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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
- B66B5/0012—Devices monitoring the users of the elevator system
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Abstract
The embodiment of the invention discloses an elevator passenger detection method, a controller, a system and a storage medium, wherein the bottom of a car of an elevator is provided with an induction pad comprising a plurality of arrays of capacitors, and the method comprises the following steps: acquiring signal variation of a capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the change of an electric field; determining an induction value of each capacitor based on the signal variation of each capacitor; generating a binary image by using the induction value of each capacitor and the position of each capacitor in the induction pad; detecting a number of passengers within the elevator car based on the binary image. The embodiment of the invention solves the problem of poor accuracy and stability caused by determining the number of passengers in the elevator car by elevator load, the human body is sensed by the capacitor to form a binary image, the number of passengers in the elevator car can be accurately detected based on the binary image, and the accuracy of the elevator man-trapping fault alarm is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of elevators, in particular to an elevator passenger detection method, a controller, a system and a storage medium.
Background
Along with social progress and improvement of living standard of people, the dependence degree of people on elevators in life is higher and higher, and people put forward higher requirements on the aspects of elevator riding quality, efficiency, safety and the like when using the elevators.
In the aspects of elevator trapping rescue and elevator taking efficiency, at present, most elevators judge whether a car is full of people or not by detecting elevator load, the situation of people in the car is determined by the elevator load, and the situation is always considered to be a technical scheme with low accuracy and poor stability by the industry.
In summary, the existing method for detecting passengers in the elevator car has the problems of poor accuracy and poor stability.
Disclosure of Invention
The embodiment of the invention provides an elevator passenger detection method, a controller, a system and a storage medium, which aim to solve the problem of poor accuracy and stability in passenger detection in the conventional elevator.
In a first aspect, an embodiment of the present invention provides an elevator passenger detection method, where a bottom of a car of an elevator is provided with a sensing pad including a plurality of arrays of capacitors, and the elevator passenger detection method includes:
acquiring signal variation of a capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the change of an electric field;
determining an induction value of each capacitor based on the signal variation of each capacitor;
generating a binary image by using the induction value of each capacitor and the position of each capacitor in the induction pad;
detecting a number of passengers within the elevator car based on the binary image.
In a second aspect, an embodiment of the present invention provides an elevator passenger detection controller, in which a sensing pad including a plurality of capacitors in an array is disposed at a bottom of a car of an elevator, and the elevator passenger detection controller includes:
the signal acquisition module is used for acquiring the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the electric field variation;
the analog-to-digital conversion module is used for determining the induction value of each capacitor based on the signal variation of each capacitor;
a processor for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image.
In a third aspect, an embodiment of the present invention provides an elevator passenger detection system, including:
the inductive pad comprises a plurality of arrays of capacitors and is arranged at the bottom of the elevator car;
an elevator passenger detection controller connected with the sensor mat, comprising:
the signal acquisition module is used for acquiring the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the electric field variation;
the analog-to-digital conversion module is used for determining the induction value of each capacitor based on the signal variation of each capacitor;
a processor for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image;
and the voice broadcasting module is used for generating voice information based on the binary image and broadcasting the voice information.
In a fourth aspect, embodiments of the present invention provide a storage medium having a computer program stored thereon, which when executed by a processor, implements an elevator passenger detection method according to any of the embodiments of the present invention.
The elevator passenger detection method is applied to an elevator provided with an induction pad formed by capacitors, the signal variation of the capacitors in the induction pad is collected, the induction value of each capacitor is determined based on the signal variation of each capacitor, a binary image is generated by adopting the induction value of each capacitor and the position of each capacitor in the induction pad, and then the number of passengers in an elevator car is detected based on the binary image. The problem of with the elevator load confirm the quantity of passenger in the car cause accuracy and poor stability is solved, form binary image through electric capacity response human body, can accurately confirm the quantity of passenger in the elevator car based on binary image, improved the accuracy of elevator trapping trouble alarm.
Drawings
Fig. 1 is a flowchart of an elevator passenger detection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor pad according to an embodiment of the present invention;
fig. 3 is a flowchart of an elevator passenger detection method according to a second embodiment of the present invention;
fig. 4 is a block diagram of an elevator passenger detection controller according to a third embodiment of the present invention;
fig. 5 is a block diagram of an elevator passenger detection system according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of an elevator passenger detection method according to an embodiment of the present invention, where the elevator passenger detection method according to an embodiment of the present invention is suitable for detecting passengers in an elevator car, and the method may be executed by an elevator passenger detection apparatus/system, as shown in fig. 1, the elevator passenger detection method according to an embodiment of the present invention may specifically include the following steps:
s101, collecting the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the change of an electric field.
Fig. 2 shows a sensing mat according to an embodiment of the present invention, which is formed by a plurality of capacitor arrays and can be installed on the bottom of an elevator car, and the size of the sensing mat is consistent with that of the bottom of the elevator car, so that the bottom of the whole elevator car is covered by the plurality of capacitors of the arrays.
The main response electric capacity field change condition of electric capacity, in the object in the elevator car, the live body is with the electric field, consequently, electric capacity in this response pad only detects the live body, and this response pad is different from piezoelectric sensor, and it can not receive the pressure influence, consequently can not receive the influence of the hardness change of elevator car bottom, long service life.
After a passenger enters an elevator car, the passenger generally stands in the elevator, the sole of the passenger is in the sensing range of the sensing pad, or the passenger sits in the elevator or lies in the elevator under special conditions, and the electric field carried by the body of the passenger influences the capacitance in the sensing pad, so that the output signal of the capacitance changes. The output signal of the capacitor may be a voltage signal or a current signal. The signal variation may be a variation of an output signal of the capacitor with respect to a reference signal, and the reference signal may be a signal acquired when no passenger is in the elevator car and output by the capacitor.
In the embodiment of the present invention, the signal output by the capacitor may be collected by the signal collection module and quantized to be used as the signal variation, for example, the voltage value, the current value, and the like of the signal output by the capacitor may be collected to be used as the signal variation, for example, when no one is in the elevator car, the voltage value of the output signal of the capacitor is quantized to 0, and when a passenger enters the elevator, the voltage value of the output signal of the capacitor that is collected is the signal variation.
And S102, determining the induction value of each capacitor based on the signal variation of each capacitor.
Specifically, the output signal of the capacitor may be converted from an analog signal to a digital signal, for example, the signal variation may be a voltage, when the voltage is greater than a preset threshold, it is determined that the capacitor senses a human body, the sensing value of the capacitor may be 1, otherwise, the sensing value is 0.
And S103, generating a binary image by using the induction value of each capacitor and the position of each capacitor in the induction pad.
Specifically, as shown in fig. 2, the position of the capacitor in the sensing pad is fixed, and the sensing value of each capacitor is 1 or 0, a binary image may be generated according to the position of each capacitor in the sensing pad and the sensing value, optionally, each capacitor corresponds to a pixel on the binary image, and the sensing value of the capacitor is 1, the color of the pixel is black, otherwise, the pixel is white, so as to obtain a binary image.
And S104, detecting the number of passengers in the elevator car based on the binary image.
In the embodiment of the invention, the binary image can be identified to determine the number of passengers in the elevator car, for example, the black area in the binary image can be identified to obtain the sole image, the hip image (the passenger sits in the elevator) and the like of the passenger, and then the number of the passengers can be determined through the sole image and the hip image.
The elevator passenger detection method is applied to an elevator provided with an induction pad formed by capacitors, the signal variation of the capacitors in the induction pad is collected, the induction value of each capacitor is determined based on the signal variation of each capacitor, a binary image is generated by adopting the induction value of each capacitor and the position of each capacitor in the induction pad, and then the number of passengers in an elevator car is detected based on the binary image. The problem of with the elevator load confirm the quantity of passenger in the car cause accuracy and poor stability is solved, through the human body of electric capacity response in order forming binary image, can accurately confirm the quantity of passenger in the elevator car based on binary image, improved the accuracy of the stranded trouble alarm of elevator.
Example two
Fig. 3 is a flowchart of an elevator passenger detection method according to a second embodiment of the present invention, and the first embodiment of the present invention is optimized based on the first embodiment of the present invention, as shown in fig. 3, the elevator passenger detection method according to the second embodiment of the present invention may specifically include the following steps:
s201, collecting the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the change of an electric field.
S202, for each capacitor, when the signal variation of the capacitor is larger than a preset threshold value, determining that the induction value of the capacitor is a first preset value.
The preset threshold is the signal variation of a signal output by the capacitor when the capacitor senses the electric field of a passenger. For example, in the embodiment of the present invention, if the capacitor outputs an analog signal, a voltage value of the analog signal may be used as the signal variation, and if the voltage value is greater than a preset threshold, the sensing value of the capacitor is determined to be 1.
S203, when the signal variation of the capacitor is smaller than a preset threshold value, determining that the induction value of the capacitor is a second preset value.
For example, if the voltage value of the analog signal output by the capacitor is smaller than the preset threshold, the sensing value of the capacitor is determined to be 0.
Of course, in practical applications, the signal variation may also be a current value, and a person skilled in the art may select a voltage value or a current value as the signal variation of the capacitor, which is not limited in this embodiment of the present invention.
S204, determining an initial image based on the position of each capacitor in the sensing pad, wherein each pixel in the initial image corresponds to one capacitor.
Specifically, a blank image may be initialized, the number of pixels of the image may be equal to the number of capacitors, each pixel on the initial image corresponds to one capacitor in the sensing pad, and of course, a plurality of pixels may correspond to one capacitor for the accuracy of the subsequent image recognition.
And S205, converting the initial image into a binary image as a sensing image by using the sensing value of each capacitor.
Since it is determined in S202 to S203 that the sensing value of the capacitor is 0 or 1 according to the signal variation of the capacitor, the color of the pixel corresponding to the capacitor may be set to black when the sensing value of the capacitor is a first preset value (for example, 1), and the color of the pixel corresponding to the capacitor may be set to white when the sensing value of the capacitor is a second preset value (for example, 0).
S206, determining the number of passengers in the elevator car based on a black area in the binary image, wherein the black area is an image area corresponding to the situation that the passengers are sensed by the capacitor.
In a preferred embodiment of the present invention, the black region of the binary image includes a sole image region, and the black region in the binary image may be subjected to image recognition to extract a plurality of sole images, and a sole image pair is determined in the plurality of sole images, where the sole image pair is an image pair composed of sole images belonging to the same passenger sole; counting the number of the pair of the sole images as a first number, and counting the number of the sole images except for the sole image in the pair of the sole images as a second number; the sum of the first number and the second number is calculated as the number of passengers in the elevator car.
The number of pairs of symmetrical soles with the same size is matched according to the sole images, when the matched pair of soles is found out, the soles of passengers with the matched pair except the soles standing with one leg or with one leg as an artificial limb are described, and the number N of the passengers in the elevator car is determined to be the number of pairs of soles plus the number of the matched pair of soles.
According to the embodiment of the invention, the sole image is identified from the binary image, the number of passengers is determined according to the sole image, and the number of the determined passengers is high in accuracy and strong in applicability and is not interfered by the environment because most of the passengers take the elevator to stand.
Further, if the black area of the binary image further includes a hip image area, image recognition may be performed on the black area in the binary image to determine whether a hip image exists; and if so, counting the number of the hip images to obtain a third number, and updating the number of passengers in the elevator car by adopting the third number.
Specifically, after the number of passengers is determined according to the number of soles, whether hip images of the passengers exist or not can be identified from a black area of the binary image, the hip images can be formed after the passengers sit at the bottom of the elevator car and are sensed by capacitance, if the hip images exist, the number of the hip images is counted to obtain a third number, and the number of the passengers N is updated by the third number, namely N is the number of pairs of soles + the number of soles that cannot be matched and the number of the hip images.
According to the embodiment of the invention, the hip image is identified from the binary image, and the number of the passengers determined according to the sole image is updated according to the hip image, so that the situation that the passengers sitting in the elevator cannot be counted is avoided, and the accuracy of detecting the number of the passengers is further improved.
In another optional embodiment of the present invention, the black region of the binary image further includes an image region with an area larger than a preset area, and then image recognition may be further performed on the black region in the binary image to determine whether there is an image with an area larger than the preset area; if so, counting the number of the images with the area larger than the preset area to obtain a fourth number, and updating the number of passengers in the elevator car by adopting the fourth number.
Specifically, when a general passenger lies in the elevator car, the size of the corresponding image is generally long, and the area is also large, for example, the area is larger than the areas of the sole image and the hip image, an area may be preset, when the area of the image in the black area is larger than the area, it may be determined that the passenger lies at the bottom of the elevator car, and the number of image areas with the area larger than the preset area is counted to obtain a fourth number, and the fourth number is adopted, namely the number of the sole pairs + the number of the hip images + the number of the large-area image areas, which are paired and cannot be matched.
According to the embodiment of the invention, the image areas with the areas larger than the preset area are identified from the binary image, and the number of the image areas with the areas larger than the preset area is counted to update the number of the passengers, so that the situation that the passengers lying in the elevator cannot be counted is avoided, and the accuracy of detecting the number of the passengers is further improved.
In another optional embodiment, if an image with an area larger than a preset area exists in the black region, counting the duration of the image with the area larger than the preset area; and generating alarm information for expressing the passenger falling down when the duration is longer than the preset duration.
Namely, if the image with the area larger than the preset area exists, the situation that a lying passenger exists in the elevator is shown, and if the time length of the lying passenger exceeds the preset time length, the situation that the passenger possibly falls down is shown, warning information can be generated and sent to a control center of the elevator to inform rescue workers of timely rescue.
S207, first voice information is generated based on the number of passengers in the elevator car and a preset maximum number, wherein the first voice information is overload reminding voice information when the number of the passengers is larger than the preset maximum number, or reminding voice information of the number of passengers which can be taken when the number of the passengers is smaller than the preset maximum number.
In the embodiment of the invention, a storage module can be arranged, and the storage module can be used for storing the maximum number of passengers, human body related parameters and the like of the elevator, such as the size and the shape of the sole of the human body, the proportion of the size of the sole to the width of the human body and the like.
The elevator can bear the weight of the maximum number of passengers and can be directly written in the storage module, the maximum number calculated according to the area required by the standing of the ordinary passengers can be obtained after the area of the bottom of the car is calculated, namely the maximum number is the area of the bottom of the car divided by the area required by the standing of the human body, and the maximum number can be obtained by counting the number of the soles in the binary image after the car is filled with the passengers.
If the detected number of the passengers is larger than the preset maximum number, generating overload reminding voice information, for example, reminding people to ask passengers to be safe and not to be crowded as much as possible, and suggesting people X to select to wait for the next elevator, so that intelligent reminding is realized, and user experience is improved.
If the number of passengers is smaller than the preset maximum number, generating reminding voice information of the number capable of taking, for example, reminding people that the elevator can go up (down) and can still take XX people, thereby realizing intelligent reminding in the peak period of elevator use and improving the transportation efficiency of the elevator.
And S208, generating voice information based on the binary image.
Specifically, in an optional embodiment of the present invention, the area of the white area in the binary image may be calculated, and when the area is smaller than the preset area, second voice information is generated, where the second voice information is voice information for reminding a passenger of the next elevator due to congestion of the elevator.
Specifically, the white area in the binary image is an area corresponding to the situation that a passenger is not detected by the capacitor, namely, the area where no passenger stands in the elevator car, if the area of the white area is smaller than a preset value, it indicates that the elevator is crowded, the number of passengers reaches or exceeds the maximum number, the elevator riding experience of the passengers can be influenced, second voice information can be generated to remind the passengers to take the next elevator, on one hand, the situation that the passengers are crowded in the elevator can be avoided, the elevator riding experience of the passengers is improved, on the other hand, the safety problem caused by overload can be avoided, and the safe operation of the elevator is ensured.
In another preferred embodiment of the present invention, a black region and a white region having an area larger than a preset value may also be determined based on the binary image; and generating third voice information when the black area is close to the first side and the white area is far away from the first side, wherein the third voice information is the voice information for reminding passengers to lean against the elevator, and the first side is the side, close to the elevator car door, in the binary image.
Specifically, if the black area in the binary image is close to the side corresponding to the elevator car door, the white area is far away from the side corresponding to the elevator car door, and the area of the white area is larger, which indicates that a passenger stands on the side of the elevator car door, and a vacancy is left in the elevator car, the passenger can be reminded to move inwards to take more passengers, so that the transportation efficiency of the elevator is improved.
And S209, broadcasting the voice information.
Specifically, the embodiment of the invention can be provided with the loudspeaker inside and outside the elevator car so as to broadcast the voice information through the loudspeaker.
The elevator passenger detection method is applied to an elevator provided with an induction pad formed by capacitors, the signal variation of the capacitors in the induction pad is collected, the induction value of each capacitor is determined based on the signal variation of each capacitor and a preset threshold value, a binary image is generated by adopting the induction value of each capacitor and the position of each capacitor in the induction pad, a black area in the binary image is an area corresponding to an area where a passenger in an elevator car is located, and then the number of passengers in the elevator car is determined based on the black area in the binary image. The problem of with the elevator load confirm the quantity of passenger in the car cause accuracy and poor stability is solved, through the human body of electric capacity response in order forming binary image, can accurately confirm the quantity of passenger in the elevator car based on binary image, improved the accuracy of the stranded trouble alarm of elevator.
Furthermore, the number of passengers is determined according to the sole images by identifying the sole images from the binary images, and the determined number of passengers is high in accuracy because most passengers take the elevator and stand.
Furthermore, the hip image is identified from the binary image, and the number of the passengers determined according to the sole image is updated according to the hip image, so that the situation that the passengers sitting in the elevator cannot be counted is avoided, and the accuracy of detecting the number of the passengers is further improved.
Furthermore, the number of passengers can be updated by identifying the image areas with the areas larger than the preset area from the binary image and counting the number of the image areas with the areas larger than the preset area, so that the situation that the passengers lying in the elevator cannot be counted is avoided, and the accuracy of detecting the number of the passengers is further improved.
Furthermore, voice information can be generated and played, intelligent elevator taking reminding is achieved, user experience is improved, and safe operation of the elevator is guaranteed.
EXAMPLE III
Fig. 4 is a block diagram of an elevator passenger detection controller according to a third embodiment of the present invention, and as shown in fig. 4, the elevator passenger detection controller according to the third embodiment of the present invention includes:
the signal acquisition module 301 is configured to acquire a signal variation of a capacitor in the sensing pad, where the signal variation is a variation of an output signal when the capacitor senses a change in an electric field;
an analog-to-digital conversion module 302, configured to determine a sensing value of each capacitor based on a signal variation of each capacitor;
a processor 303 for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image.
Optionally, the analog-to-digital conversion module 302 includes:
the first induction value determining submodule is used for determining the induction value of each capacitor as a first preset value when the signal variation of the capacitor is larger than a preset threshold value;
the second induction value determining submodule is used for determining the induction value of the capacitor to be a second preset value when the signal variation of the capacitor is smaller than a preset threshold value;
the preset threshold is the signal variation of a signal output by the capacitor when the capacitor senses the electric field of a passenger.
Optionally, the processor 303 includes:
an initial image determination sub-module for determining an initial image based on the location of each of the capacitors in the sensor pad, each pixel in the initial image corresponding to one of the capacitors;
the induction image conversion sub-module is used for converting the initial image into a binary image as an induction image by adopting the induction value of each capacitor;
in the induction image, the color of the pixel point corresponding to the capacitor with the induction value of the first preset value is black, and the color of the pixel point corresponding to the capacitor with the induction value of the second preset value is white.
Optionally, the processor 303 includes:
the passenger number determining submodule is used for determining the number of passengers in the elevator car based on a black area in the binary image, wherein the black area is an image area corresponding to the situation that the passengers are sensed by the capacitor.
Optionally, the black area includes a sole image area, and the passenger number determination sub-module includes:
the sole image recognition unit is used for carrying out image recognition on the black area in the binary image so as to extract a plurality of sole images;
the sole image matching unit is used for determining a sole image pair in the plurality of sole images, wherein the sole image pair is an image pair formed by sole images belonging to the same passenger sole;
a sole pair number determining unit for counting the number of the pair of sole images as a first number;
a sole number counting unit for counting the number of sole images other than the sole image of the sole image pair as a second number;
a passenger number determination unit for calculating a sum of the first number and the second number as the number of passengers in the elevator car.
Optionally, the black region further includes a hip image region, and the passenger number determination sub-module further includes:
a hip image recognition unit for performing image recognition on a black region in the binary image to determine whether a hip image exists;
the hip image counting unit is used for counting the number of the hip images to obtain a third number;
a first passenger number updating unit for updating the number of passengers in the elevator car with the third number.
Optionally, the black region further includes an image region having an area larger than a preset area, and the passenger number determination sub-module further includes:
the large-area image recognition unit is used for carrying out image recognition on a black area in the binary image so as to determine whether an image with an area larger than a preset area exists;
the large-area image quantity counting unit is used for counting the quantity of the images with the areas larger than the preset area to obtain a fourth quantity;
a second passenger number updating unit for updating the number of passengers in the elevator car with the fourth number.
Confidence, the apparatus further comprising:
a voice message generation module 304 for generating first voice messages based on the number of passengers in the elevator car and a preset maximum number;
the first voice message is overload reminding voice message when the number of passengers is larger than the preset maximum number, or reminding voice message of the number of passengers which can be taken when the number of passengers is smaller than the preset maximum number.
Optionally, the voice information generating module further includes:
the voice information generation submodule is used for generating voice information based on the binary image;
and the voice information broadcasting submodule is used for broadcasting the voice information.
Optionally, the voice information generation sub-module includes:
the first area calculation unit is used for calculating the area of a white area in the binary image, wherein the white area is an area corresponding to the situation that a passenger is not detected by the capacitor;
and the second voice information generating unit is used for generating second voice information when the area is smaller than the preset area, and the second voice information is voice information for reminding passengers of taking the next elevator in case of congestion of the elevator.
Optionally, the voice information generation sub-module includes:
a second area calculation unit for determining a black area and a white area having an area larger than a preset value based on the binary image;
and the third voice information generating unit is used for generating third voice information when the black area is close to the first side and the white area is far away from the first side, the third voice information is voice information for reminding passengers to lean towards the inside of the elevator, and the first side is the side, close to the elevator car door, in the binary image.
The elevator passenger detection controller provided by the embodiment of the invention is used for executing the elevator passenger detection method and system provided by the embodiment of the invention, so that the elevator passenger detection controller has corresponding beneficial effects.
Example four
Fig. 5 is a block diagram of a structure of an elevator passenger detection system according to a fourth embodiment of the present invention, as shown in fig. 5, the elevator passenger detection system according to the fourth embodiment of the present invention may be connected to an elevator control system and an elevator monitoring system, and specifically may include:
a sensing pad 401 comprising a plurality of arrays of capacitors, the sensing pad mounted to the bottom of the elevator car;
an elevator passenger detection controller 402 connected to the sensor mat 401, comprising:
the signal acquisition module is used for acquiring the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the electric field variation;
the analog-to-digital conversion module is used for determining the induction value of each capacitor based on the signal variation of each capacitor;
a processor for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image;
the voice broadcasting module is used for generating voice information based on the binary image and broadcasting the voice information;
and a speaker 403 for broadcasting voice information.
Optionally, the elevator passenger detection controller 402 further comprises:
the car door detection module is used for detecting the opening or closing state of the car door;
the storage module is used for storing the maximum number of passengers borne by the elevator and the sole data of the passengers;
and the interface module is used for being connected with the elevator control system and the elevator monitoring system.
It should be noted that, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to part of the description of the method embodiment.
The elevator passenger detection system provided by the embodiment of the invention is used for executing the elevator passenger detection method provided by the embodiment of the invention, so that the elevator passenger detection system has corresponding beneficial effects.
Embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements an elevator passenger detection method according to any of the embodiments of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the elevator passenger detection controller and the elevator passenger detection system, the units and modules included in the embodiment are only divided according to the functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. The elevator passenger detection method is characterized in that a sensing pad comprising a plurality of arrays of capacitors is arranged at the bottom of a car of an elevator, and comprises the following steps:
acquiring signal variation of a capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the change of an electric field;
determining an induction value of each capacitor based on the signal variation of each capacitor;
generating a binary image by using the induction value of each capacitor and the position of each capacitor in the induction pad;
detecting a number of passengers within the elevator car based on the binary image;
the black area includes a sole image area, wherein the black area is an image area corresponding to when a passenger is sensed by a capacitor, and the detecting the number of passengers in the elevator car based on the binary image includes:
performing image recognition on a black area in the binary image to extract a plurality of sole images;
determining a sole image pair in the plurality of sole images, wherein the sole image pair is an image pair formed by sole images belonging to the same passenger sole;
counting the number of the pair of sole images as a first number;
counting the number of the sole images other than the sole image of the pair of sole images as a second number;
calculating a sum of the first number and the second number as a number of passengers in the elevator car;
further comprising:
performing image recognition on a black area in the binary image to determine whether a hip image exists;
if yes, counting the number of the hip images to obtain a third number;
updating the number of passengers in the elevator car with the third number.
2. The method of claim 1, wherein determining the sensed value of each capacitor based on the amount of change in the signal for each capacitor comprises:
for each capacitor, when the signal variation of the capacitor is larger than a preset threshold value, determining that the induction value of the capacitor is a first preset value;
when the signal variation of the capacitor is smaller than a preset threshold value, determining that the induction value of the capacitor is a second preset value;
the preset threshold is the signal variation of a signal output by the capacitor when the capacitor senses the electric field of a passenger.
3. The method of claim 1 or 2, wherein said generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing pad comprises:
determining an initial image based on the location of each of the capacitances in the sensor pad, each pixel in the initial image corresponding to one of the capacitances;
converting the initial image into a binary image as an induction image by adopting the induction value of each capacitor;
in the induction image, the color of the pixel point corresponding to the capacitor with the induction value of the first preset value is black, and the color of the pixel point corresponding to the capacitor with the induction value of the second preset value is white.
4. The method of claim 1, wherein the black regions further comprise image regions having an area greater than a preset area, the determining the number of passengers within the elevator car based on the black regions in the binary image further comprising:
carrying out image recognition on a black area in the binary image to determine whether an image with an area larger than a preset area exists;
if so, counting the number of the images with the area larger than the preset area to obtain a fourth number;
updating the number of passengers in the elevator car with the fourth number.
5. The method of claim 4, further comprising:
if the image with the area larger than the preset area exists in the black area, counting the duration of the image with the area larger than the preset area;
and when the duration is longer than the preset duration, generating alarm information for expressing that the passenger falls down.
6. The method of any one of claims 1, 2, 4, or 5, further comprising:
generating first voice information based on the number of passengers in the elevator car and a preset maximum number;
the first voice message is overload reminding voice message when the number of passengers is larger than the preset maximum number, or reminding voice message of the number of passengers which can be taken when the number of passengers is smaller than the preset maximum number.
7. The method of claim 1, further comprising:
generating voice information based on the binary image;
and broadcasting the voice information.
8. The method of claim 7, wherein generating speech information based on the binary image comprises:
calculating the area of a white area in the binary image, wherein the white area is an area corresponding to the condition that the capacitor does not detect the passenger;
and generating second voice information when the area is smaller than the preset area, wherein the second voice information is the voice information for reminding passengers of taking the next elevator when the elevator is crowded.
9. The method of claim 7, wherein generating speech information based on the binary image comprises:
determining a black area and a white area with the area larger than a preset value based on the binary image;
and generating third voice information when the black area is close to the first side and the white area is far away from the first side, wherein the third voice information is voice information for reminding passengers to lean towards the inside of the elevator, and the first side is the side, close to the elevator car door, in the binary image.
10. The utility model provides an elevator passenger detects controller, its characterized in that, the car bottom of elevator is provided with the response pad including the electric capacity of a plurality of arrays, and elevator passenger detects the controller and includes:
the signal acquisition module is used for acquiring the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the electric field variation;
the analog-to-digital conversion module is used for determining the induction value of each capacitor based on the signal variation of each capacitor;
a processor for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image;
the black area includes a sole image area, wherein the black area is an image area corresponding to when the capacitor senses a passenger, and the processor includes:
the sole image recognition unit is used for carrying out image recognition on the black area in the binary image so as to extract a plurality of sole images;
the sole image matching unit is used for determining a sole image pair in the plurality of sole images, wherein the sole image pair is an image pair formed by sole images belonging to the same passenger sole;
a sole pair number determining unit for counting the number of the pair of sole images as a first number;
a sole number counting unit for counting the number of sole images other than the sole image of the sole image pair as a second number;
a passenger number determination unit for calculating a sum of the first number and the second number as a number of passengers in the elevator car;
further comprising:
a hip image recognition unit for performing image recognition on a black region in the binary image to determine whether a hip image exists;
the hip image counting unit is used for counting the number of the hip images to obtain a third number if the hip images are in the first number;
a first passenger number updating unit for updating the number of passengers in the elevator car with the third number.
11. The elevator passenger detection controller of claim 10, further comprising:
and the voice broadcasting module is used for generating voice information based on the binary image and broadcasting the voice information.
12. An elevator passenger detection system, comprising:
the inductive pad comprises a plurality of arrays of capacitors and is arranged at the bottom of the elevator car;
an elevator passenger detection controller connected with the sensor mat, comprising:
the signal acquisition module is used for acquiring the signal variation of the capacitor in the induction pad, wherein the signal variation is the variation of an output signal when the capacitor induces the electric field variation;
the analog-to-digital conversion module is used for determining the induction value of each capacitor based on the signal variation of each capacitor;
a processor for generating a binary image using the sensed value of each capacitance and the position of each capacitance in the sensing mat, and detecting the number of passengers within the elevator car based on the binary image;
the voice broadcasting module is used for generating voice information based on the binary image and broadcasting the voice information;
the black area includes a sole image area, wherein the black area is an image area corresponding to when the capacitor senses a passenger, and the processor includes:
the sole image recognition unit is used for carrying out image recognition on the black area in the binary image so as to extract a plurality of sole images;
the sole image matching unit is used for determining a sole image pair in the plurality of sole images, wherein the sole image pair is an image pair formed by sole images belonging to the same passenger sole;
a sole pair number determining unit for counting the number of the pair of sole images as a first number;
a sole number counting unit for counting the number of sole images other than the sole image of the sole image pair as a second number;
a passenger number determination unit for calculating a sum of the first number and the second number as a number of passengers in the elevator car;
further comprising:
a hip image recognition unit for performing image recognition on a black region in the binary image to determine whether a hip image exists;
the hip image counting unit is used for counting the number of the hip images to obtain a third number if the hip images are in the first number;
a first passenger number updating unit for updating the number of passengers in the elevator car with the third number.
13. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the elevator passenger detection method according to any one of claims 1-9.
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| JPH07187535A (en) * | 1993-12-28 | 1995-07-25 | Hitachi Building Syst Eng & Service Co Ltd | Traffic slow surveying device |
| KR0167179B1 (en) * | 1995-05-19 | 1998-12-01 | 이희종 | Stay passenger check equipment and method of elevator |
| DE202005001179U1 (en) * | 2005-01-25 | 2005-04-07 | Sick Ag | Capacitive proximity sensor for lift control, has capacitor electrodes arranged in passenger waiting area and controls lift travel according to detected capacitance |
| US20080116017A1 (en) * | 2006-11-20 | 2008-05-22 | Kress James R | Elevator car overload warning system and method |
| JP2010241546A (en) * | 2009-04-03 | 2010-10-28 | Mitsubishi Electric Building Techno Service Co Ltd | Device for detecting elevator car riding status |
| FI121421B (en) * | 2009-07-28 | 2010-11-15 | Marimils Oy | A system for controlling lifts in an elevator system |
| WO2011158301A1 (en) * | 2010-06-18 | 2011-12-22 | 株式会社 日立製作所 | Elevator system |
| CN103778691A (en) * | 2012-10-18 | 2014-05-07 | 唐毅 | Human traffic detection system based on foot pressure |
| CN117902441A (en) * | 2016-07-29 | 2024-04-19 | 奥的斯电梯公司 | Monitoring system for passenger conveyor, passenger conveyor and monitoring method thereof |
| CN106744137A (en) * | 2017-03-06 | 2017-05-31 | 长安大学 | Elevator and control method based on footprint detection |
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| CN110033450A (en) * | 2019-04-16 | 2019-07-19 | 北京元六鸿远电子科技股份有限公司 | A kind of portable intelligent ceramic capacitor counting equipment |
| CN110182658A (en) * | 2019-05-07 | 2019-08-30 | 徐高超 | A kind of manned method of counting of lift car and system based on footprint perception |
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