CN110526054A - Elevator passenger detection method, controller, system and storage medium - Google Patents

Abstract

The embodiment of the present invention discloses an elevator passenger detection method, controller, system and storage medium. The bottom of the elevator car is provided with a sensing pad including a plurality of arrays of capacitors. The method includes: collecting the capacitance in the sensing pad The signal change amount, the signal change amount is the change amount of the output signal when the capacitance senses the electric field change; the sensing value of each capacitor is determined based on the signal change amount of each capacitor; the sensing value of each capacitor and each A binary image is generated based on the position of each capacitor in the sensing pad; and the number of passengers in the elevator car is detected based on the binary image. The embodiment of the present invention solves the problem of poor accuracy and stability caused by determining the number of passengers in the car by the load of the elevator. The human body is sensed by capacitance to form a binary image, and the passengers in the elevator car can be accurately detected based on the binary image. The number improves the accuracy of elevator trapped fault alarm.

Description

Elevator passenger detection method, controller, system and storage medium

technical field

The embodiments of the present invention relate to the technical field of elevators, and in particular to an elevator passenger detection method, controller, system and storage medium.

Background technique

With the progress of society and the improvement of people's living standards, people rely more and more on elevators in their lives. When people use elevators, they put forward higher requirements for the quality, efficiency and safety of elevators.

In terms of elevator rescue and elevator efficiency, most elevators still judge whether the car is full of people or whether there are people by detecting the elevator load, and the elevator load to determine the situation of the people in the car has always been considered by the industry to be accurate Low and poor stability of the technical solution, in practical applications, there are still remaining spaces in the car but it is judged to be full, and one or two passengers are required to go out before they can take the elevator, and even the elevator stops normally but reports a trapped person fault , The elevator is indeed trapped, but it fails to report the fault of the trapped person.

To sum up, the existing methods for passenger detection in the elevator car have problems of poor accuracy and stability.

Contents of the invention

Embodiments of the present invention provide an elevator passenger detection method, controller, system and storage medium to solve the problem of poor accuracy and stability of passenger detection in existing elevators.

In the first aspect, the embodiment of the present invention provides a method for detecting elevator passengers. The bottom of the elevator car is provided with a sensing pad including a plurality of arrays of capacitors. The method for detecting elevator passengers includes:

Collecting the signal change amount of the capacitance in the sensing pad, the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance;

determining the sensing value of each capacitor based on the signal variation of each capacitor;

generating a binary image using the sensing value of each capacitor and the position of each capacitor in the sensing pad;

The number of passengers in the elevator car is detected based on the binary image.

In the second aspect, the embodiment of the present invention provides an elevator passenger detection controller. The bottom of the elevator car is provided with a sensing pad including a plurality of arrays of capacitors. The elevator passenger detection controller includes:

The signal acquisition module is used to collect the signal change amount of the capacitance in the sensing pad, and the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance;

An analog-to-digital conversion module, configured to determine the sensing 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 location of each capacitance in the sensing mat, and detecting the number of passengers in 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:

Induction pads, including a plurality of arrays of capacitors, the induction pads are installed at the bottom of the elevator car;

The elevator passenger detection controller, connected with the induction pad, includes:

The signal acquisition module is used to collect the signal change amount of the capacitance in the sensing pad, and the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance;

An analog-to-digital conversion module, configured to determine the sensing 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 in the elevator car based on the binary image;

The voice broadcast module is used for generating voice information based on the binary image, and broadcasting the voice information.

In a fourth aspect, an embodiment of the present invention provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the elevator passenger detection method described in any one of the embodiments of the present invention is implemented.

The elevator passenger detection method of the embodiment of the present invention is applied to an elevator provided with a sensing pad formed by a capacitor, by collecting the signal variation of the capacitance in the sensing pad, and determining the sensing value of each capacitor based on the signal variation of each capacitor, using The sensed value of each capacitance and the position of each capacitance in the sensing mat generate a binary image, and then the number of passengers in the elevator car is detected based on the binary image. It solves the problem of poor accuracy and stability caused by determining the number of passengers in the car by the load of the elevator. The binary image is formed by capacitively sensing the human body, and the number of passengers in the elevator car can be accurately determined based on the binary image, which improves the Accuracy of elevator trapped fault alarm.

Description of drawings

Fig. 1 is a flow chart of an elevator passenger detection method provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a sensing pad provided by an embodiment of the present invention;

3 is a flow chart of a method for detecting elevator passengers provided by Embodiment 2 of the present invention;

Fig. 4 is a structural block diagram of an elevator passenger detection controller provided by Embodiment 3 of the present invention;

Fig. 5 is a structural block diagram of an elevator passenger detection system provided by Embodiment 4 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

Figure 1 is a flow chart of an elevator passenger detection method provided in Embodiment 1 of the present invention. The elevator passenger detection method in the embodiment of the present invention is applicable to the situation of detecting passengers in the elevator car, and the method can be detected by elevator passengers device/system, as shown in Figure 1, the elevator passenger detection method of the embodiment of the present invention may specifically include the following steps:

S101. Collect a signal change amount of a capacitance in the sensing pad, where the signal change amount is a change amount of an output signal when the capacitance senses an electric field change.

As shown in Figure 2, the sensing pad of the embodiment of the present invention is formed. The sensing pad is made of a plurality of capacitor arrays. The sensing pad can be installed on the bottom of the elevator car. The size of the sensing pad is consistent with the size of the bottom of the elevator car. The bottom of the entire elevator car is covered by multiple capacitors of the array.

The capacitance mainly senses the change of the capacitance field. In the objects in the elevator car, the living body only carries the electric field. Therefore, the capacitance in the sensing pad only detects the living body. The sensing pad is different from the piezoelectric sensor, it will not Affected by pressure, it will not be affected by the soft and hard changes at the bottom of the elevator car, and has a long service life.

When a passenger enters the elevator car, he usually stands in the elevator, and the soles of the passenger's feet will be within the sensing range of the induction pad, or under special circumstances, when the passenger is sitting or lying in the elevator, the electric field carried by the passenger's body will It will affect the capacitance in the sensing pad, so that the output signal of the capacitance will change. The output signal of the capacitor can be a voltage signal or a current signal. The signal variation may refer to the variation of the output signal of the capacitor relative to the reference signal, and the reference signal may refer to the signal output by the capacitor collected when there are no passengers in the elevator car.

In the embodiment of the present invention, the signal output by the capacitor can be collected by the signal acquisition module and quantified as the signal variation. For example, the voltage value and current value of the output signal of the capacitor can be collected as the signal variation. For example, in the elevator When there is no one in the car, the voltage value of the output signal of the capacitor is quantized to 0. When the passenger enters the elevator, the voltage value of the output signal of the capacitor collected is the signal variation.

S102. Determine the sensing value of each capacitor based on the signal change amount of each capacitor.

Specifically, the output signal of the capacitor can be converted from an analog signal to a digital signal. For example, the amount of signal change can be a voltage. When the voltage is greater than a preset threshold, it is determined that the capacitor is induced to the human body, and the sensing value of the capacitor can be 1. Otherwise the sensing value is 0.

S103. Generate a binary image by using the sensing value of each capacitor and the position of each capacitor in the sensing 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, and a two-dimensional card can be generated according to the position and sensing value of each capacitor in the sensing pad. Value image, optionally, each capacitor corresponds to a pixel on the binary image, if the sensing value of the capacitor is 1, the color of the pixel is black, otherwise it is white, thus obtaining a binary image.

S104. Detect the number of passengers in the elevator car based on the binary image.

In the embodiment of the present 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 passenger's sole image, hip image (passenger sitting in the elevator), etc., and then determine the number of passengers through the sole image and buttocks image.

The elevator passenger detection method of the embodiment of the present invention is applied to an elevator provided with a sensing pad formed by a capacitor, by collecting the signal variation of the capacitance in the sensing pad, and determining the sensing value of each capacitor based on the signal variation of each capacitor, using The sensed value of each capacitance and the position of each capacitance in the sensing mat generate a binary image, and then the number of passengers in the elevator car is detected based on the binary image. Solve the problem of poor accuracy and stability caused by determining the number of passengers in the car by the load of the elevator, and form a binary image through capacitive sensing of the human body. Based on the binary image, the number of passengers in the elevator car can be accurately determined, improving It improves the accuracy of elevator trapped fault alarm.

Embodiment two

Fig. 3 is a flow chart of an elevator passenger detection method provided in Embodiment 2 of the present invention. The embodiment of the present invention is optimized on the basis of Embodiment 1. As shown in Fig. 3 , the elevator passenger detection method in the embodiment of the present invention is specifically may include the following steps:

S201. Collect a signal change amount of a capacitance in the sensing pad, where the signal change amount is a change amount of an output signal when the capacitance senses an electric field change.

S202. For each capacitor, when the signal variation of the capacitor is greater than a preset threshold, determine the sensing value of the capacitor as a first preset value.

Wherein, the preset threshold is a signal change amount of a signal output by the capacitor when the capacitor senses the passenger's electric field. Exemplarily, in the embodiment of the present invention, if the output of the capacitor is an analog signal, the voltage value of the analog signal can be used as the signal variation, and if the voltage value is greater than a preset threshold value, then the sensing value of the capacitor is determined to be 1.

S203. When the signal variation of the capacitance is less than a preset threshold, determine that the sensing value of the capacitance is a second preset value.

Exemplarily, if the voltage value of the analog signal output by the capacitor is less than a preset threshold, it is determined that the sensing value of the capacitor is 0.

Of course, in practical applications, the signal change amount may also be a current value, and those skilled in the art may select a voltage value or a current value as the signal change amount of the capacitor, which is not limited in the embodiment of the present invention.

S204. Determine an initial image based on the position of each of the capacitors in the sensing pad, where each pixel in the initial image corresponds to one of the capacitors.

Specifically, a blank image can be initialized, and the pixels of the image can be equal to the number of capacitors. Each pixel on the initial image corresponds to a capacitor in the sensing pad. Of course, for the accuracy of subsequent image recognition, multiple A pixel corresponds to a capacitor.

S205. Using the sensing value of each capacitor, convert the initial image into a binary image as a sensing image.

Since the sensing value of the capacitance has been determined to be 0 or 1 according to the signal variation of the capacitance in S202-S203, when the sensing value of the capacitance is the first preset value (for example, 1), the pixel corresponding to the capacitance The color of the capacitor is set to black, and when the sensing value of the capacitor is a second preset value (for example, 0), the color of the pixel corresponding to the capacitor is set to white.

S206. Determine the number of passengers in the elevator car based on a black area in the binary image, where the black area is an image area corresponding to passengers detected by capacitance.

In a preferred embodiment of the present invention, the black area of the binary image includes the sole image area, then image recognition can be performed on the black area in the binary image to extract multiple sole images, and the sole images can be determined in the multiple sole images Yes, the sole image pair is an image pair formed by the sole images belonging to the same passenger's sole; Two quantities; calculating the sum of the first quantity and the second quantity as the number of passengers in the elevator car.

That is, the logarithm of symmetrical feet of the same size is matched according to the sole image. When it is found that the paired soles cannot be matched, it means that the soles of the matched soles are the soles of passengers who stand on one leg or have one leg as a prosthesis. The number of passengers in the compartment N=the number of pairs of soles+the number of pairs of soles that cannot be matched.

The embodiment of the present invention recognizes the sole image from the binary image, and determines the number of passengers according to the sole image. Since most passengers are standing in the elevator, the determined number of passengers has high accuracy, strong applicability, and no environmental interference.

Further, the black area of the binary image also includes the buttock image area, then image recognition can be performed on the black area in the binary image to determine whether there is a buttock image; Three Quantity updates the number of passengers in the elevator car.

Specifically, after determining the number of passengers according to the number of soles, it is also possible to identify whether there is a buttock image of the passenger in the black area of the binary image. If there are buttock images, count the number of buttock images to obtain a third number, and use the third number to update the above-mentioned number of passengers N, that is, N=number of pairs of soles+number of soles that cannot be matched+number of buttock images.

The embodiment of the present invention recognizes the buttocks image from the binary image, and updates the number of passengers previously determined based on the sole image according to the buttocks image, avoiding the inability to count passengers sitting in the elevator, and further improving the accuracy of detecting the number of passengers.

In another optional embodiment of the present invention, the black area of the binary image also includes an image area with an area larger than a preset area, then image recognition can also be performed on the black area in the binary image to determine whether there is an area larger than the preset area. An image with a set area; if so, count the number of images with an area larger than the preset area to obtain a fourth number, and use the fourth number to update the number of passengers in the elevator car.

Specifically, when a passenger is generally lying in the elevator car, the corresponding image size is generally longer and the area is larger, for example, it is larger than the area of the sole image and the buttocks image, and an area can be preset. When the black area exists When the area of the image is greater than the area, it can be determined that a passenger is lying on the bottom of the elevator car, and the number of image areas with an area greater than the preset area is counted to obtain the fourth number, and the fourth number is used to increase the number of passengers N=the logarithm of the soles of the feet + cannot match the number of paired paws + the number of buttock images + the number of large image areas.

In the embodiment of the present invention, the number of image regions with an area larger than the preset area is identified from the binary image, and the number of image regions with the area larger than the preset area is counted to update the number of passengers, avoiding the inability to count the passengers lying in the elevator, and further Improved the accuracy of detecting the number of passengers.

In another optional embodiment, if there is an image with an area larger than the preset area in the black area, the duration of the image with the area larger than the preset area is counted; when the duration is longer than the preset time, an alarm is generated to express that the passenger fainted information.

That is, if there is an image with an area larger than the preset area, it means that there are passengers lying down in the elevator. If the passenger is lying down longer than the preset time, it means that the passenger may faint, and an alarm message can be generated and sent to the elevator control center. In order to notify rescuers to rescue in time.

S207. Generate first voice information based on the number of passengers in the elevator car and the preset maximum number, wherein the first voice information is an overload reminder voice message when the number of passengers is greater than the preset maximum number, or is a voice message for passengers A reminder voice message for the number of rides that can be taken when the number is less than the preset maximum number.

In the embodiment of the present invention, a storage module can be provided, which can pre-store the maximum number of passengers that the elevator can carry, human body related parameters, etc., such as the size and shape of the human foot, the ratio of the size of the foot to the width of the human body, and other parameters.

Wherein, the maximum number of passengers that the elevator can carry can be directly written into the storage module, or it can be the maximum number calculated according to the area required for ordinary passengers to stand after obtaining and calculating the area of the bottom of the car, that is, the maximum number=bottom of the car The area ÷ the area required by the human body to stand, can also be the maximum number obtained by counting the logarithm of the soles of the feet in the binary image after arranging passengers to fill the car.

If the number of detected passengers is greater than the preset maximum number, an overload reminder voice message will be generated, for example, reminding "passengers, please try not to be crowded for your own safety. It is recommended that X people choose to wait for the next elevator", so as to realize intelligent Reminders to improve user experience.

If the number of passengers is less than the preset maximum number, a reminder voice message of the number of passengers can be generated, for example, reminding "the elevator is going up (down), and XX people can still be taken", so as to realize intelligent reminders during the peak period of elevator use and improve the efficiency of the elevator. transport efficiency.

S208. Generate 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 can be calculated, and the second voice information is generated when the area is smaller than the preset area. The second voice information is that the elevator is crowded to remind passengers to take the next elevator voice message.

Specifically, the white area in the binary image is the area corresponding to when no passenger is detected by the capacitance, that is, the area where no passenger stands in the elevator car. If the area of the white area is smaller than the preset value, it means that the elevator is crowded and the passenger If the number has reached or exceeded the maximum number, it will affect the passenger experience. A second voice message can be generated to remind passengers to take the next elevator. On the one hand, it can avoid the crowding of passengers in the elevator and improve the passenger experience. Overloading causes safety problems, which ensures the safe operation of the elevator.

In another preferred embodiment of the present invention, the black area and the white area whose area is larger than a preset value can also be determined based on the binary image; the third voice information is generated 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 the voice information reminding the passengers to get in the elevator, wherein the first side is the side of the binary image close to the elevator car door.

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 relatively large, it means that the passenger is standing on the side of the elevator car door. On one side, if there is still space inside the elevator car, passengers can be reminded to lean in to take more passengers, thereby improving the transportation efficiency of the elevator.

S209. Broadcast the voice information.

Specifically, in this embodiment of the present invention, speakers may be provided inside and outside the elevator car, so as to broadcast voice information through the speakers.

The elevator passenger detection method of the embodiment of the present invention is applied to an elevator provided with a sensing pad formed by a capacitance, by collecting the signal change amount of the capacitance in the sensing pad, and determining the value of each capacitor based on the signal change amount of each capacitor and a preset threshold value Sensing value, using the sensing value of each capacitor and the position of each capacitor in the sensing pad to generate a binary image, the black area in the binary image is the area corresponding to the area where the passengers are in the elevator car, and then based on the binary image The black area in determines the number of passengers inside the elevator car. Solve the problem of poor accuracy and stability caused by determining the number of passengers in the car by the load of the elevator, and form a binary image through capacitive sensing of the human body. Based on the binary image, the number of passengers in the elevator car can be accurately determined, improving It improves the accuracy of elevator trapped fault alarm.

Further, by identifying the sole image from the binary image, the number of passengers is determined according to the sole image. Since most passengers are standing when taking the elevator, the determined number of passengers is highly accurate.

Furthermore, by identifying the buttock image from the binary image, the number of passengers previously determined based on the sole image is updated according to the buttock image, avoiding the inability to count passengers sitting in the elevator, and further improving the accuracy of detecting the number of passengers.

Further, by identifying the image area with an area larger than the preset area from the binary image, and counting the number of image areas with the area larger than the preset area to update the number of passengers, avoiding the inability to count passengers lying in the elevator, further improving To ensure the accuracy of detecting the number of passengers.

Further, the voice information can be generated and played, realizing the intelligent elevator reminder, improving the user experience and ensuring the safe operation of the elevator.

Embodiment three

Fig. 4 is a structural block diagram of an elevator passenger detection controller provided in Embodiment 3 of the present invention. As shown in Fig. 4, the elevator passenger detection controller in the embodiment of the present invention includes:

A signal collection module 301, configured to collect a signal change amount of the capacitance in the sensing pad, the signal change amount being the change amount of the output signal when the electric field is sensed by the capacitance;

An analog-to-digital conversion module 302, configured to determine the sensing value of each capacitor based on the signal variation of each capacitor;

The processor 303 is configured to generate a binary image using the sensing value of each capacitor and the position of each capacitor in the sensing mat, and detect the number of passengers in the elevator car based on the binary image.

Optionally, the analog-to-digital conversion module 302 includes:

The first sensing value determining submodule is used for determining the sensing value of the capacitor as a first preset value when the signal variation of the capacitor is greater than a preset threshold for each capacitor;

The second sensing value determination submodule is used to determine the sensing value of the capacitance as a second preset value when the signal variation of the capacitance is less than a preset threshold;

Wherein, the preset threshold is a signal change amount of a signal output by the capacitor when the capacitor senses the passenger's electric field.

Optionally, the processor 303 includes:

an initial image determining submodule, configured to determine an initial image based on the position of each of the capacitors in the sensing pad, and each pixel in the initial image corresponds to one of the capacitors;

A sensing image conversion sub-module, configured to convert the initial image into a binary image using the sensing value of each capacitor as the sensing image;

Wherein, in the sensing image, the color of the pixel corresponding to the capacitance with the sensing value of the first preset value is black, and the color of the pixel corresponding to the capacitance of the sensing value of the second preset value is white.

Optionally, the processor 303 includes:

The number of passengers determining sub-module is used to determine the number of passengers in the elevator car based on the black area in the binary image, wherein the black area is the corresponding image area when passengers are sensed by capacitance.

Optionally, the black area includes a sole image area, and the submodule for determining the number of passengers includes:

The sole image recognition unit is used to perform image recognition on the black area in the binary image to extract multiple sole images;

a sole image pairing unit, configured to determine a pair of sole images among the plurality of sole images, and the pair of sole images is an image pair composed of sole images belonging to the same passenger;

The sole logarithm determination unit is configured to count the number of pairs of sole images as the first quantity;

A single sole number statistics unit is used to count the number of sole images other than the sole image in the sole image pair as the second quantity;

A passenger number determination unit, configured to calculate the sum of the first number and the second number as the number of passengers in the elevator car.

Optionally, the black area also includes a buttocks image area, and the submodule for determining the number of passengers also includes:

The buttock image recognition unit is used to perform image recognition on the black area in the binary image to determine whether there is a buttock image;

A buttock image statistics unit, configured to count the number of said buttock images to obtain a third number;

A first passenger number updating unit, configured to use the third number to update the number of passengers in the elevator car.

Optionally, the black area also includes an image area with an area larger than a preset area, and the submodule for determining the number of passengers also includes:

A large-area image recognition unit, which is used to perform image recognition on the black area in the binary image to determine whether there is an image with an area larger than a preset area;

The large-area image quantity statistics unit is used to calculate the number of images whose area is larger than the preset area to obtain the fourth quantity;

A second passenger number updating unit, configured to use the fourth number to update the number of passengers in the elevator car.

credibility, the means further comprising:

A voice information generating module 304, configured to generate first voice information based on the number of passengers in the elevator car and a preset maximum number;

Wherein the first voice message is an overload reminder voice message when the number of passengers is greater than a preset maximum number, or a reminder voice message for a passenger capacity when the number of passengers is less than a preset maximum number.

Optionally, the voice information generation module also includes:

A voice information generating submodule, configured to generate voice information based on the binary image;

The voice information broadcasting sub-module is used to broadcast the voice information.

Optionally, the voice information generation submodule includes:

The first area calculation unit is used to calculate the area of the white area in the binary image, and the white area is the corresponding area when no passenger is detected by the capacitance;

The second voice information generating unit is configured to generate second voice information when the area is smaller than a preset area, and the second voice information is the voice information for reminding passengers to take the next elevator due to elevator congestion.

Optionally, the voice information generation submodule includes:

a second area calculation unit, configured to determine a black area and a white area whose area is greater than a preset value based on the binary image;

A third voice information generating unit, configured to generate 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 to remind passengers to get inside the elevator , wherein the first side is the side of the binary image that is close to the elevator car door.

The elevator passenger detection controller provided by the embodiment of the present invention is used to implement the elevator passenger detection method system provided by the embodiment of the present invention, so that the elevator passenger detection controller has corresponding beneficial effects.

Embodiment four

Fig. 5 is a structural block diagram of an elevator passenger detection system provided in Embodiment 4 of the present invention. As shown in Fig. 5, the elevator passenger detection system in the embodiment of the present invention can be connected with an elevator control system and an elevator monitoring system, and may specifically include:

The induction pad 401 includes a plurality of arrays of capacitors, and the induction pad is installed at the bottom of the elevator car;

The elevator passenger detection controller 402, connected with the induction pad 401, includes:

The signal acquisition module is used to collect the signal change amount of the capacitance in the sensing pad, and the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance;

An analog-to-digital conversion module, configured to determine the sensing 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 in the elevator car based on the binary image;

A voice broadcast module, configured to generate voice information based on the binary image, and broadcast the voice information;

The loudspeaker 403 is used for broadcasting voice information.

Optionally, the elevator passenger detection controller 402 also includes:

The car door detection module is used for the open or closed state of the car door;

The storage module is used to store the maximum number of passengers carried by the elevator and the sole data of the passengers;

The interface module is used for connecting 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 relevant parts, please refer to the part of the description of the method embodiment.

The elevator passenger detection system provided by the embodiment of the present invention is used to implement the elevator passenger detection method provided by the embodiment of the present invention, so that the elevator passenger detection system has corresponding beneficial effects.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the elevator passenger detection method described in any one of the embodiments of the present invention is implemented.

Through the above description about the implementation, those skilled in the art can clearly understand that the present invention can be realized by means of software and necessary general-purpose hardware, and of course can also be realized by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a floppy disk of a computer , read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), flash memory (FLASH), hard disk or optical disc, etc., including several instructions to make a computer device (which can be a personal computer, A server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

It is worth noting that, in the embodiments of the elevator passenger detection controller and the elevator passenger detection system, the units and modules included are only divided according to functional logic, but are not limited to the above divisions, as long as the corresponding In addition, the specific names of each functional unit are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present invention.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (16)

1. A kind of elevator passenger detection method is characterized in that, the car bottom of elevator is provided with the induction pad that comprises the electric capacity of a plurality of arrays, and elevator passenger detection method comprises: Collecting the signal change amount of the capacitance in the sensing pad, the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance; determining the sensing value of each capacitor based on the signal variation of each capacitor; generating a binary image using the sensing value of each capacitor and the position of each capacitor in the sensing pad; The number of passengers in the elevator car is detected based on the binary image. 2. The method according to claim 1, wherein the determining the sensing value of each capacitor based on the signal variation of each capacitor comprises: For each capacitor, when the signal variation of the capacitor is greater than a preset threshold, determine that the sensing value of the capacitor is a first preset value; When the signal change amount of the capacitance is less than a preset threshold, determine that the sensing value of the capacitance is a second preset value; Wherein, the preset threshold is a signal change amount of a signal output by the capacitor when the capacitor senses the passenger's electric field. 3. The method according to claim 1 or 2, wherein the generating a binary image using the sensing value of each capacitance and the position of each capacitance in the sensing pad comprises: determining an initial image based on the position of each of the capacitors in the sensing pad, where each pixel in the initial image corresponds to one of the capacitors; converting the initial image into a binary image using the sensing value of each capacitor as the sensing image; Wherein, in the sensing image, the color of the pixel corresponding to the capacitance with the sensing value of the first preset value is black, and the color of the pixel corresponding to the capacitance of the sensing value of the second preset value is white. 4. The method according to claim 1, wherein the detecting the number of passengers in the elevator car based on the binary image comprises: The number of passengers in the elevator car is determined based on a black area in the binary image, wherein the black area is an image area corresponding to passengers detected by capacitance. 5. The method according to claim 4, wherein the black area comprises a sole image area, and the determination of the number of passengers in the elevator car based on the black area in the binary image comprises: Perform image recognition on the black area in the binary image to extract multiple sole images; A pair of sole images is determined among the plurality of sole images, and the pair of sole images is an image pair composed of sole images belonging to the same passenger's sole; Counting the number of pairs of sole images as the first number; counting the number of sole images other than the sole images in the sole image pair as the second quantity; calculating the sum of the first number and the second number as the number of passengers in the elevator car. 6. The method according to claim 5, wherein the black area also includes a hip image area, and the determination of the number of passengers in the elevator car based on the black area in the binary image further includes: Perform image recognition on black areas in the binary image to determine if there is a buttock image; If so, count the number of the buttock images to obtain the third number; The number of passengers in the elevator car is updated with the third number. 7. The method according to claim 6, wherein the black area also includes an image area with an area greater than a preset area, and the number of passengers in the elevator car is determined based on the black area in the binary image ,Also includes: Perform image recognition on the black area in the binary image to determine whether there is an image with an area larger than a preset area; If so, the number of images whose area is larger than the preset area is counted to obtain the fourth number; The number of passengers in the elevator car is updated with the fourth number. 8. The method according to claim 7, further comprising: If there is an image with an area larger than a preset area in the black area, count the duration of the image with an area larger than a preset area; When the duration is longer than the preset duration, an alarm message expressing that the passenger faints is generated. 9. The method according to claim 1 or 2 or 4 or 5 or 6 or 7 or 8, further comprising: generating first voice information based on the number of passengers in the elevator car and a preset maximum number; Wherein the first voice message is an overload reminder voice message when the number of passengers is greater than a preset maximum number, or a reminder voice message for a passenger capacity when the number of passengers is less than a preset maximum number. 10. The method of claim 1, further comprising: generating voice information based on the binary image; broadcast the voice information. 11. The method according to claim 10, wherein said generating voice information based on said binary image comprises: Calculating the area of the white area in the binary image, the white area is the corresponding area when no passenger is detected by the capacitance; When the area is smaller than the preset area, second voice information is generated, and the second voice information is voice information for reminding passengers to take the next elevator due to elevator congestion. 12. The method according to claim 10, wherein said generating voice information based on said binary image comprises: determining a black area and a white area whose area is greater than a preset value based on the binary image; When the black area is close to the first side and the white area is far away from the first side, third voice information is generated, the third voice information is voice information to remind passengers to get inside the elevator, wherein the first side is The side of the binary image that is close to the door of the elevator car. 13. An elevator passenger detection controller is characterized in that, the bottom of the car of the elevator is provided with an induction pad comprising a plurality of arrays of capacitance, and the elevator passenger detection controller comprises: The signal acquisition module is used to collect the signal change amount of the capacitance in the sensing pad, and the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance; An analog-to-digital conversion module, configured to determine the sensing 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 location of each capacitance in the sensing mat, and detecting the number of passengers in the elevator car based on the binary image. 14. The elevator passenger detection controller according to claim 13, further comprising: The voice broadcast module is used for generating voice information based on the binary image, and broadcasting the voice information. 15. An elevator passenger detection system, comprising: Induction pads, including a plurality of arrays of capacitors, the induction pads are installed at the bottom of the elevator car; The elevator passenger detection controller, connected with the induction pad, includes: The signal acquisition module is used to collect the signal change amount of the capacitance in the sensing pad, and the signal change amount is the change amount of the output signal when the electric field is sensed by the capacitance; An analog-to-digital conversion module, configured to determine the sensing 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 in the elevator car based on the binary image; The voice broadcast module is used for generating voice information based on the binary image, and broadcasting the voice information. 16. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the program is executed by a processor, the elevator passenger detection method according to any one of claims 1-12 is realized.