CN112180790A

CN112180790A - Energy-saving control method and device for multimedia equipment and computer equipment

Info

Publication number: CN112180790A
Application number: CN202011051382.2A
Authority: CN
Inventors: 吴竞; 李挺
Original assignee: Chengdu Xinchao Media Group Co Ltd
Current assignee: Chengdu Xinchao Media Group Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-05
Anticipated expiration: 2040-09-29
Also published as: CN112180790B

Abstract

The invention relates to the technical field of multimedia and discloses an energy-saving control method and device for multimedia equipment and computer equipment. The invention provides a new control method for controlling the multimedia equipment in the personnel accommodating cavity by starting up based on the door state information acquisition result, namely, after the personnel access door of the personnel accommodating cavity is found to be in an open state, a starting up instruction is sent to the multimedia equipment which is in the personnel accommodating cavity and is in a shutdown state currently, so that the multimedia equipment can timely carry out normal media information playing work.

Description

Energy-saving control method and device for multimedia equipment and computer equipment

Technical Field

The invention belongs to the technical field of multimedia, and particularly relates to an energy-saving control method and device for multimedia equipment and computer equipment.

Background

In daily life, passengers have timeliness when taking movable compartments such as elevators or rail vehicles. For example, for an elevator, most of the time, the elevator car is in an unmanned state, but the in-car advertisement player serving as an elevator media is in a continuous playing state all the time, which wastes not only the service life of the advertisement player, but also energy expenditure greatly. Therefore, the existing in-car advertising machine usually adopts a timing shutdown mode to stop the advertisement and save energy efficiency. For example, the advertisement machine in the sedan automatically enters a shutdown state or a standby state in a late night period (such as 23: 00 days to 6: 00 days, namely a period with relatively few passengers), and other periods are always in a working state.

However, the adoption of the timing on/off mode inevitably causes the problem that the set working time interval of the advertising machine is coincident with the unmanned time interval of a large number of elevators, so that the advertising machine works inefficiently, and also causes the problem that a small number of passengers cannot receive media information during the off time interval, so that the working efficiency of the advertising machine is finally reduced, and the energy consumption of equipment is wasted.

Disclosure of Invention

In order to solve the problems of low working efficiency and energy consumption waste of the advertising machine caused by the conflict between static time control and dynamic personnel flow at present, the invention aims to provide an energy-saving control method and device of multimedia equipment, computer equipment and a computer readable storage medium.

In a first aspect, the present invention provides a method for controlling energy saving of a multimedia device, including:

acquiring door state information of the personnel accommodating cavity;

and if the acquired door state information indicates that the personnel access door of the personnel accommodating cavity is in an open state, sending a starting instruction to the multimedia equipment which is in the personnel accommodating cavity and is in a shutdown state at present, so that the multimedia equipment is started according to the starting instruction and plays multimedia resources.

Based on the content of the invention, a new control method for controlling the multimedia device in the personnel accommodating cavity by starting up based on the door state information acquisition result is provided, namely, after the personnel access door of the personnel accommodating cavity is found to be in an open state, a starting up instruction is sent to the multimedia device which is in the personnel accommodating cavity and is in a shutdown state currently, so that the multimedia device can timely carry out normal media information playing work.

In one possible design, after sending a power-on instruction to the multimedia device that is located in the personnel accommodation cavity and currently in the power-off state, the method further includes:

obtaining the door state information of the personnel accommodating cavity again;

if the obtained door state information indicates that the personnel access door is in a closed state, determining whether a person is in the personnel accommodating cavity or not;

if no, sending a shutdown instruction to the multimedia equipment so that the multimedia equipment can be shut down according to the shutdown instruction and the multimedia resource is stopped to be played.

Through the possible design, whether the multimedia equipment is shut down or not can be determined based on the determination result of whether a person is in the person accommodating cavity or not after the person access door is switched from the open state to the closed state, namely when no person is determined, the multimedia equipment can be stopped in time by sending a shutdown instruction to the multimedia equipment, so that shutdown control is dynamic in real time, the media efficiency of the multimedia equipment is further improved, and the energy consumption of the equipment is further saved.

if no one exists, starting a first timer;

acquiring first motion state information of the personnel accommodating cavity within a first preset time period after the first timer is started;

and if the first motion state information indicates that the personnel accommodation cavity is in a static state, sending a shutdown instruction to the multimedia equipment so that the multimedia equipment is shut down according to the shutdown instruction and stops playing the multimedia resource.

Through the possible design, whether the multimedia equipment is shut down or not can be determined based on the determination result of whether people exist in the personnel accommodating cavity and the motion state determination result of the personnel accommodating cavity after the personnel access door is switched from the open state to the closed state, if no people exist and the cavity is continuously in the static state, the multimedia equipment can be stopped in time by sending a shutdown instruction to the multimedia equipment, so that shutdown control also has dynamic real-time performance, the media efficiency of the multimedia equipment is further improved, and the energy consumption of the equipment is further saved.

In one possible design, after determining whether a person is present in the person accommodation cavity, the method further includes:

if the person is present, starting a second timer;

acquiring second motion state information of the personnel accommodating cavity within a second preset time period after the second timer is started;

and if the second motion state information indicates that the personnel accommodating cavity is in a static state, sending people trapping alarm information to a safety management platform corresponding to the personnel accommodating cavity.

Through above-mentioned possible design, can be in personnel business turn over door by the open mode switch to the closed condition after, based on whether personnel hold in the cavity someone confirm the result with personnel hold the motion state of cavity and confirm the result, come accurate affirmation whether personnel hold the cavity and are in the abnormal operation state, if the operation is unusual, then through to with personnel hold the safety management platform that the cavity corresponds and send stranded alarm information, can do benefit to safety control personnel in time perception stranded alarm information to take necessary action and save, avoid causing bigger loss.

In one possible design, acquiring door status information of a personnel accommodation cavity includes:

acquiring a video image acquired by an infrared camera, wherein the visual field range of the infrared camera covers the personnel entrance and exit;

identifying an infrared light curtain area in the video image and corresponding to the personnel access door in position;

and if the width of the infrared light curtain area of the video image is larger than or equal to a preset threshold value, door state information used for indicating that the personnel access door is in an open state is generated, wherein the width of the infrared light curtain area refers to the distance between opposite sides of the infrared light curtain area in the opposite opening direction of the personnel access door.

Through the possible design, the side-to-side distance of the personnel entering and exiting the door can be reflected based on the width of the infrared light curtain area identified from the video image, and then the door state information is accurately generated and acquired through threshold value comparison, so that the accuracy of follow-up energy-saving control is ensured.

In one possible design, determining whether a person is present within the person-receiving cavity includes:

acquiring at least one frame of video image collected by a camera, wherein the visual field range of the camera covers the internal space of the personnel accommodating cavity;

detecting whether the at least one frame of video image contains a human face;

and if the human face is not contained, determining that no person is in the accommodating cavity.

Through the possible design, whether people exist in the personnel accommodation cavity or not can be accurately determined through the face recognition result based on the video images collected by the camera, and the correctness of shutdown control or people trapping and alarming is further ensured.

In one possible design, if the face is included, the method further includes:

judging whether the face is a false face;

and if the face is a false face, determining that no person is in the accommodating cavity of the person.

Through the possible design, the problem that whether people exist is judged by mistake due to the existence of false faces can be avoided, and the correctness of shutdown control or people trapping alarm is further ensured.

In a second aspect, the present invention provides an energy saving control apparatus for multimedia devices, including an information obtaining unit and a device control unit, which are connected in communication;

the information acquisition unit is used for acquiring door state information of the personnel accommodation cavity;

and the equipment control unit is used for sending a starting-up instruction to the multimedia equipment which is positioned in the personnel accommodating cavity and is in a power-off state at present when the acquired door state information indicates that the personnel access door of the personnel accommodating cavity is in an open state, so that the multimedia equipment is started up according to the starting-up instruction and plays multimedia resources.

In one possible design, the system further comprises a first information reacquisition unit, a first person determination unit and a first shutdown instruction sending unit which are sequentially in communication connection;

the first information reacquiring unit is used for reacquiring the door state information of the personnel accommodating cavity after sending a starting-up instruction to the multimedia equipment which is positioned in the personnel accommodating cavity and is in the power-off state at present;

the first person determining unit is used for determining whether a person is in the person accommodating cavity or not when the obtained door state information indicates that the person access door is in a closed state;

the first shutdown instruction sending unit is used for sending a shutdown instruction to the multimedia device when no one is present, so that the multimedia device can be shut down according to the shutdown instruction and the multimedia resource is stopped being played.

In one possible design, the system further comprises a second information reacquisition unit, a second someone determination unit, a first timing starting unit, a first motion state information acquisition unit and a second shutdown instruction sending unit which are sequentially in communication connection;

the second information reacquiring unit is used for reacquiring the door state information of the personnel accommodating cavity after sending a starting-up instruction to the multimedia equipment which is positioned in the personnel accommodating cavity and is in the power-off state at present;

the second person determining unit is used for determining whether a person is in the person accommodating cavity or not when the obtained door state information indicates that the person access door is in a closed state;

the first timing starting unit is used for starting a first timer when no person exists;

the first motion state information acquisition unit is used for acquiring first motion state information of the personnel accommodation cavity within a first preset time period after the first timer is started;

and the second shutdown instruction sending unit is used for sending a shutdown instruction to the multimedia device when the first motion state information indicates that the personnel accommodating cavity is in a static state, so that the multimedia device is shut down according to the shutdown instruction and stops playing the multimedia resource.

In one possible design, the system also comprises a second timing starting unit, a second motion state information acquiring unit and an alarm information sending unit which are sequentially in communication connection;

the second timing starting unit is used for starting a second timer if a person exists in the personnel accommodating cavity after determining whether the person exists in the personnel accommodating cavity;

the second motion state information acquisition unit is used for acquiring second motion state information of the personnel accommodating cavity within a second preset time period after the second timer is started;

and the alarm information sending unit is used for sending drowsy alarm information to a safety management platform corresponding to the personnel accommodation cavity when the second motion state information indicates that the personnel accommodation cavity is in a static state.

In one possible design, the information acquiring unit comprises a video image acquiring subunit, a region identifying subunit and a door state information generating subunit which are sequentially connected in a communication manner;

the video image acquisition subunit is used for acquiring a video image acquired by an infrared camera, wherein the visual field range of the infrared camera covers the personnel access door;

the area identification subunit is used for identifying an infrared light curtain area in the video image and corresponding to the personnel access door;

the door state information generating subunit is configured to generate door state information used for indicating that the personnel access door is in an open state when a width of an infrared light curtain region of the video image is greater than or equal to a preset threshold value, where the width of the infrared light curtain region refers to a distance between opposite sides of the infrared light curtain region in a direction in which the personnel access door is open.

In one possible design, the first person determining unit or the second person determining unit includes an image acquiring subunit, a face detecting subunit and a first unmanned determining subunit, which are sequentially connected in a communication manner;

the image acquisition subunit is used for acquiring at least one frame of video image acquired by a camera, wherein the visual field range of the camera covers the internal space of the personnel accommodating cavity;

the face detection subunit is configured to detect whether the at least one frame of video image includes a face;

the first unmanned determining subunit is used for determining that no person exists in the person accommodating cavity when the person does not contain a face.

In one possible design, the first person determining unit or the second person determining unit further includes a false face judging subunit and a second unmanned determining subunit;

the false face judging subunit is in communication connection with the face detecting subunit and is used for judging whether the face is a false face or not when the face is included;

the second unmanned determining subunit is in communication connection with the false face judging subunit and is used for determining that no person exists in the person accommodating cavity when the face is the false face.

In a third aspect, the present invention provides a computer device, comprising a memory, a processor and a transceiver, which are communicatively connected in sequence, wherein the memory is used for storing a computer program, the transceiver is used for transceiving a message, and the processor is used for reading the computer program and executing the energy saving control method according to the first aspect or any one of the possible designs of the first aspect.

In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon instructions which, when executed on a computer, perform the energy saving control method as described in the first aspect or any one of the possible designs of the first aspect.

In a fifth aspect, the present invention provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the energy saving control method as described above in the first aspect or any one of the possible designs of the first aspect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flow chart illustrating a method for controlling power saving of a multimedia device according to the present invention.

Fig. 2 is an exemplary diagram of sliding the first image dividing line horizontally to the right in synchronization in two frames of video images according to the present invention.

Fig. 3 is a diagram illustrating a position of a dynamic image display area in a video image according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an energy-saving control device of multimedia equipment provided by the invention.

Fig. 5 is a schematic structural diagram of a computer device provided by the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.

It will be understood that when an element is referred to herein as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Conversely, if a unit is referred to herein as being "directly connected" or "directly coupled" to another unit, it is intended that no intervening units are present. In addition, other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

It should also be noted that, in some alternative designs, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.

As shown in fig. 1, the energy-saving control method for multimedia devices provided in the first aspect of this embodiment may be, but is not limited to, suitable for performing start-stop control on multimedia devices in a mobile car (as a personnel accommodation cavity) such as an elevator car or a railway vehicle (e.g., a cable car), so as to achieve the purposes of improving media efficiency and saving device energy consumption; for example, in an elevator car scenario, the energy-saving control method may be performed by a control box (i.e., a gateway device including a device control unit, an information receiving module, and/or a timing module) installed on the top of the car or an artificial intelligence camera, so as to control the start and stop of a multimedia device used as an in-car advertising machine. The energy-saving control method of the multimedia device may include, but is not limited to, the following steps S101 to S102.

S101, door state information of the personnel accommodating cavity is obtained.

In step S101, the people accommodating cavity may be, but is not limited to, an elevator car or a rail car (e.g., a car). The door state information is used for indicating whether a personnel access door of the personnel accommodation cavity is in an open state or a closed state, wherein the personnel access door is an elevator door for the elevator car; for the rail car, the personnel access door is a door, and so on. The door state information can be acquired by environment sensing equipment arranged in the personnel accommodating cavity, wherein the environment sensing equipment is used for sensing the environment condition in the personnel accommodating cavity, such as the opening/closing state condition of the personnel access door, the personnel occurrence condition, the temperature condition or the humidity condition in the personnel accommodating cavity and the like; the environment sensing device may include, but is not limited to, electronic devices such as existing artificial intelligence cameras, microwave sensors, and/or infrared sensors. After the environment sensing equipment is started, the opening/closing state of the personnel access door can be continuously detected by adopting the conventional mode (for example, for an artificial intelligent camera, an image recognition mode can be based on; for a microwave sensor, a microwave reflection detection mode can be based on; for an infrared sensor, an infrared distance measurement mode can be based on; and the like) to acquire the door state information. In addition, when the execution main body of the energy saving control method is not the environment sensing device, the acquired door state information needs to be transmitted to the execution main body by the environment sensing device, so that the execution main body can acquire the door state information of the personnel accommodation cavity.

And S102, if the acquired door state information indicates that the personnel access door of the personnel accommodating cavity is in an open state, sending a starting instruction to the multimedia equipment which is in the personnel accommodating cavity and is in a shutdown state at present, so that the multimedia equipment is started according to the starting instruction and plays multimedia resources.

In the step S102, since the acquired door state information indicates that the personnel access door is in an open state, and it is default that personnel can enter the personnel accommodating cavity, the multimedia device can be timely turned on by sending a power-on instruction to the multimedia device whose current state is a power-off state, so that the multimedia device can perform normal media information playing work. For example, in an elevator car scene, when the elevator is to be operated, the situation that no person is in the elevator car can be firstly defaulted, so that the advertising machine in the car is controlled to be in a shutdown state, and once the elevator door is in an open state, a startup instruction is sent, so that the advertising machine in the car is started to be put in advertisements.

Therefore, through the multimedia device power-on control scheme described in detail in the steps S101 to S102, a new control method for power-on control of a multimedia device located in a personnel accommodation cavity based on a door state information acquisition result is provided, that is, after a condition that a personnel access door of the personnel accommodation cavity is in an open state is found, a power-on instruction is sent to the multimedia device located in the personnel accommodation cavity and in a power-off state at present, so that the multimedia device can timely perform normal media information playing work.

On the basis of the technical solution of the first aspect, the present embodiment further specifically proposes a possible design of how to dynamically perform shutdown control, that is, after sending a startup instruction to the multimedia device that is located in the personnel accommodation cavity and is currently in the shutdown state, the method further includes, but is not limited to, the following steps S201 to S203.

S201, door state information of the personnel accommodation cavity is obtained again.

In the step S201, the technical details of obtaining the door state information again are the same as those of the step S101, and are not described herein again.

S202, if the obtained door state information indicates that the personnel access door is in a closed state, determining whether a person is in the personnel accommodating cavity or not.

In step S202, the environment sensing apparatus may also determine whether there is a person in the person accommodating cavity by using an existing conventional manner (e.g., for an artificial intelligence camera, an image recognition manner may be based on; for a microwave sensor, a microwave reflection detection manner may be based on; for an infrared sensor, a human body infrared detection manner may be based on; and the like). Similarly, when the execution subject of the energy saving control method is not the environment sensing device, the environment sensing device needs to transmit a determination result to the execution subject, so that the execution subject can obtain the determination result of whether a person is in the person accommodating cavity.

S203, if no one exists, a shutdown instruction is sent to the multimedia equipment, so that the multimedia equipment is shut down according to the shutdown instruction, and the multimedia resource is stopped being played.

In step S203, since no person is determined in the person accommodating cavity, it can be determined that all the persons in the person accommodating cavity have gone out, and no person can perceive the media information, and at this time, by sending a shutdown instruction to the multimedia device, the media information playing work can be stopped in time, so that shutdown control is also dynamic and real-time, the media efficiency of the multimedia device is further improved, and the energy consumption of the device is further reduced.

Therefore, by the possible design one described in the above steps S201 to S203, after the personnel access door is switched from the open state to the closed state, whether to shut down the multimedia device is determined based on the determination result of whether there is a person in the personnel accommodating cavity, that is, when it is determined that there is no person, the media information playing operation can be stopped in time by sending a shutdown instruction to the multimedia device, so that the shutdown control also has dynamic real-time performance, the media efficiency of the multimedia device is further improved, and the energy consumption of the device is further reduced.

In this embodiment, on the basis of the technical solution of the first aspect, a second possible design of how to dynamically perform shutdown control is further specifically provided, that is, after a power-on instruction is sent to the multimedia device that is located in the personnel accommodation cavity and is currently in a shutdown state, the method further includes, but is not limited to, the following steps S301 to S305.

S301, door state information of the personnel accommodation cavity is obtained again.

In the step S301, the technical details of acquiring the door state information again are the same as those of the step S101, and are not described herein again.

S302, if the obtained door state information indicates that the personnel access door is in a closed state, determining whether a person is in the personnel accommodating cavity or not.

In step S302, the environment sensing apparatus may also determine whether there is a person in the person accommodating cavity by using an existing conventional manner (e.g., for an artificial intelligence camera, an image recognition manner may be based on; for a microwave sensor, a microwave reflection detection manner may be based on; for an infrared sensor, a human body infrared detection manner may be based on; and so on). Similarly, when the execution subject of the energy saving control method is not the environment sensing device, the environment sensing device needs to transmit a determination result to the execution subject, so that the execution subject can obtain the determination result of whether a person is in the person accommodating cavity.

S303, if no one exists, starting a first timer.

S304, acquiring first motion state information of the personnel accommodating cavity within a first preset time period after the first timer is started.

In the step S304, the first preset time period may be 30 seconds, for example. The first motion state information may be acquired by a motion sensing device disposed on the accommodating cavity, wherein the motion sensing device may include, but is not limited to, an existing acceleration sensor, a speed sensor, or the like, so that the first motion state information may be, but is not limited to, speed data capable of reflecting a motion condition of the accommodating cavity. Furthermore, when the execution subject of the energy saving control method is not the motion sensing device, the motion sensing device needs to transmit the first motion state information to the execution subject, so that the execution subject can acquire the first motion state information.

S305, if the first motion state information indicates that the personnel accommodating cavity is in a static state, sending a shutdown instruction to the multimedia device, so that the multimedia device is shut down according to the shutdown instruction and stops playing the multimedia resource.

In the step S305, for example, if the first motion state information is speed data and the data is zero, it may indicate that the personnel accommodation cavity is in a stationary state. At this time, as the personnel accommodating cavity is judged to be unmanned and still in a stop operation state within a period of time, the unmanned media information in the personnel accommodating cavity can be confirmed, and the media information playing work can be stopped in time by sending a shutdown instruction to the multimedia device, so that the shutdown control also has dynamic real-time performance, the media efficiency of the multimedia device is further improved, and the energy consumption of the device is further saved. In addition, when one of all the acquired speed data is not zero, the fact that the personnel accommodating cavity is in normal operation is indicated, and people possibly exist in the personnel accommodating cavity and are not detected, and at the moment, the multimedia device can continue to carry out media information playing work.

Therefore, by the second possible design described in the above steps S301 to S305, after the personnel access door is switched from the open state to the closed state, whether to shut down the multimedia device may be determined based on the determination result of whether a person is in the personnel accommodating cavity and the determination result of the motion state of the personnel accommodating cavity, and if no person is determined and the cavity is continuously in the static state, the playing work of the media information may be stopped in time by sending a shutdown instruction to the multimedia device, so that the shutdown control also has dynamic real-time performance, the media efficiency of the multimedia device is further improved, and the energy consumption of the device is further saved.

On the basis of the technical solution of the first possible design or the second possible design, the third possible design of how to trigger the alarm for the trapping person is further specifically proposed in this embodiment, that is, after determining whether a person is in the person accommodating cavity, the method further includes, but is not limited to, the following steps S401 to S403.

S401, if a person exists, a second timer is started.

S402, acquiring second motion state information of the personnel accommodating cavity within a second preset time period after the second timer is started.

In the step S402, the second preset time period may be 30 seconds, for example. The second motion state information may also be acquired by a motion sensing device disposed on the accommodating cavity, where the motion sensing device may include, but is not limited to, an existing acceleration sensor or speed sensor, so that the second motion state information may be, but is not limited to, speed data capable of reflecting a motion condition of the accommodating cavity. Furthermore, when the execution subject of the energy saving control method is not the motion sensing device, the motion sensing device needs to transmit the second motion state information to the execution subject, so that the execution subject can acquire the second motion state information.

And S403, if the second motion state information indicates that the personnel accommodating cavity is in a static state, sending people trapping alarm information to a safety management platform corresponding to the personnel accommodating cavity.

In the step S403, for example, if the second motion state information is speed data and the data is zero, it may indicate that the personnel accommodation cavity is in a static state. Because the personnel hold in the cavity and have judged someone and still be in the out-of-service condition in a period, then can confirm the personnel hold the cavity and are in the abnormal operation state, through to with the personnel hold the safety management platform that the cavity corresponds and send stranded people alarm information this moment, can do benefit to safety control personnel in time perception stranded people alarm information to take necessary action to save, avoid causing bigger loss. In addition, when one of all the acquired speed data is not zero, the personnel accommodation cavity is indicated to normally operate, and the multimedia equipment can continue to perform media information playing work.

Therefore, through the third possible design described in the steps S401 to S403, after the personnel access door is switched from the open state to the closed state, whether the personnel accommodation cavity is in an abnormal operation state or not can be accurately determined based on the determination result of whether the personnel accommodation cavity is internally provided with the people and the movement state determination result of the personnel accommodation cavity, if the personnel accommodation cavity is abnormally operated, people trapping alarm information is sent to the safety management platform corresponding to the personnel accommodation cavity, so that safety management personnel can sense the people trapping alarm information in time, and necessary actions are taken to save, thereby avoiding causing greater loss.

On the basis of the first aspect and any one of the first to third possible designs, the present embodiment further specifically proposes a fourth possible design for how to acquire the door state information, that is, acquiring the door state information of the personnel accommodation cavity, including but not limited to the following steps S501 to S503.

S501, acquiring a video image acquired by an infrared camera, wherein the visual field range of the infrared camera covers the personnel access door.

In step S501, when the execution subject of the energy saving control method is not the infrared camera, the infrared camera needs to transmit the video image to the execution subject, so that the execution subject can acquire the video image.

S502, identifying an infrared light curtain area in the video image, wherein the position of the infrared light curtain area corresponds to the personnel access door.

In step S502, since the imaging area of the infrared light curtain is red, the infrared light curtain area can be recognized from the video image based on, but not limited to, a color recognition method. The infrared light curtain is a light ray type safety protection curtain (such as an elevator light curtain, which is suitable for a passenger elevator and a goods elevator and protects the safety of passengers) suitable for a person to enter and exit a door, and a control system of the infrared light curtain comprises four parts, namely an infrared transmitter and a receiver which are arranged on two sides of a split door, a power supply box arranged on the top of a cavity and a special flexible cable; the infrared emitter is internally provided with 32 (or 16) infrared emitting tubes, and the emitting tubes and the receiver are sequentially opened under the control of the microprocessor to continuously scan the split door area from top to bottom to form a dense infrared protection light curtain; when any beam of light is blocked, the control system immediately outputs a door opening signal, the side-by-side door is stopped to be closed and is reversely opened until the side-by-side door can be normally closed after a passenger or an obstacle leaves a warning area, and therefore the purpose of safety protection is achieved, and the occurrence of a door clamping accident can be avoided.

S503, if the width of the infrared light curtain area of the video image is larger than or equal to a preset threshold value, door state information used for indicating that the personnel access door is in an open state is generated, wherein the width of the infrared light curtain area refers to the distance between opposite sides of the infrared light curtain area in the opposite opening direction of the personnel access door.

In the step S503, for example, if the opening direction of the personnel access door is a left-right direction, the distance between the opposite sides is the distance between the left side and the right side of the infrared light curtain region; and if the opposite opening direction of the personnel access door is the vertical direction, the distance between the opposite edges is the distance between the upper edge and the lower edge of the infrared light curtain area. The preset threshold may be, for example, 40 cm. Because the regional width of infrared light curtain can directly reflect personnel access door's the limit distance of opening, consequently when being greater than or equal to when presetting the threshold value, can regard as personnel access door is in the open mode. On the contrary, if the width of the infrared light curtain area of the video image is smaller than the preset threshold value, the personnel access door can be regarded as being in a closed state, and door state information used for indicating that the personnel access door is in the closed state is generated.

Therefore, by the possible design four described in the above steps S501 to S503, the side-to-side distance of the person entering and exiting the door can be reflected based on the infrared light curtain region width identified from the video image, and then the door state information is accurately generated and acquired by threshold comparison, so that the accuracy of the subsequent energy-saving control is ensured.

On the basis of the above technical solution of the possible design one or two, the present embodiment also specifically proposes a possible design five of how to determine whether a person is present, that is, determine whether a person is present in the person accommodating cavity, including but not limited to the following steps S601 to S603.

S601, acquiring at least one frame of video image acquired by a camera, wherein the visual field range of the camera covers the inner space of the personnel accommodating cavity.

In step S601, the at least one frame of video image may be captured by the camera when the lens is still, or may be captured by the camera when the lens rotates. When the execution main body of the energy-saving control method is not the camera, the camera needs to transmit the at least one frame of video image to the execution main body, so that the execution main body can acquire the at least one frame of video image.

S602, detecting whether the at least one frame of video image contains a human face.

In step S602, a conventional method is used to detect whether a video image contains a face, for example, each frame of video image is respectively imported into a face detection algorithm model such as a Multi-task Cascaded Convolutional network Model (MTCNN), and if a face feature point (including a face peripheral contour feature point, a face middle contour feature point, and the like) and a face region (marked by a face rectangular frame) are detected, it indicates that at least one frame of video image contains a face, and if no face feature point or face region is detected after all video images are imported into the model, it indicates that at least one frame of video image does not contain a face.

And S603, if the human face is not contained, determining that no person is in the accommodating cavity.

Therefore, by the fifth possible design described in the steps S601 to S603, whether a person is in the person accommodating cavity can be accurately determined by the face recognition result based on the video image acquired by the camera, and the correctness of shutdown control or alarming for people trapping is further ensured.

Based on the aforementioned technical solution of possible design five, the present embodiment further provides a possible design six for avoiding misjudging whether a person exists due to the existence of a false face, that is, if a face exists, the method further includes, but is not limited to, the following steps S701 to S702.

And S701, judging whether the face is a false face.

S702, if the face is a false face, determining that no person is in the accommodating cavity.

In the step S702, it is considered that the face may be a false face provided by a mural or a display interface arranged in the person accommodating cavity, and a determination result of whether a person is present may be misjudged, so that when a face is present, it may be determined whether the face is a false face, and then it is determined that the face is a false face, and it is determined that no person is present in the person accommodating cavity, so that a problem of misjudging whether a person is present due to the presence of a false face may be avoided, and correctness of power-off control or alarming for a trapped person is further ensured. In addition, if the face is not a false face, it may be determined that there is a person within the person-receiving cavity.

Therefore, through the sixth possible design detailed in the steps S701 to S702, the problem that whether a person is misjudged due to the existence of a false face can be avoided, and the correctness of shutdown control or people trapping alarm is further ensured.

On the basis of the aforementioned technical solution of the possible design six, the present embodiment further specifically proposes a possible design seven for how to determine a false face, that is, determine whether the face is a false face, including but not limited to the following steps S801 to S803.

S801, determining the coordinate position of the face in the at least one frame of video image.

In step S801, the coordinate position is determined in a conventional manner, for example, by taking an abscissa x and an ordinate y of the center of the identification mark frame corresponding to the face in the video image as the coordinate position.

S802, judging whether the coordinate position is located in a dynamic image display area of the at least one frame of video image, wherein the dynamic image display area refers to an imaging area of a display interface of the multimedia device in the at least one frame of video image.

In the step S802, the occupied position of the dynamic image display area in the at least one frame of video image may be determined manually in advance, or may be determined automatically in advance based on the result of identifying the display interface from the video image. If the at least one frame of video image is collected by the camera in a static state of the display interface relative to the lens, the occupied position of the dynamic image display area in each frame of the at least one frame of video image is unchanged, and the occupied positions of the dynamic image display area in the rest frames can be directly obtained as long as the occupied positions of the dynamic image display area in part of the frames are determined. If the at least one frame of video image is captured by the camera in a moving state of the display interface relative to the lens (including but not limited to movement of the display interface and/or rotation of the lens, etc.), the occupied positions of the dynamic image display area in each frame of the at least one frame of video image are changed, and as long as the occupied positions of the dynamic image display area in a partial frame are determined, the occupied positions of the dynamic image display area in the rest frames can also be obtained through conventional geometric transformation based on the occupied positions of the dynamic image display area in the partial frame and a known moving track of the display interface relative to the lens in a camera coordinate system of the camera.

And S803, if the coordinate position of the face is located in the dynamic image display area, judging that the face is a false face.

In step S803, since the display interface provides a human face of a dummy person (e.g., a dummy human face of a character actor in an elevator advertisement) for the at least one frame of video image when displaying the playing content, if the coordinate position of the human face appears in the dynamic image display area, it may be preliminarily determined that the human face is a dummy human face provided by a display interface (e.g., a display interface of the multimedia device when playing media information). Otherwise, the face can be preliminarily determined to be the real face.

Therefore, by the seventh possible design detailed in the above steps S801 to S803, it is possible to accurately determine whether the face is a false face by determining the coordinate position of the face in the video image, and then based on the determination result of whether the coordinate position of the face is located in the dynamic image display region in the video image, thereby avoiding the problem of misdetermination of whether a person is present due to the presence of the false face, and further ensuring the correctness of power-off control or alarming for people in trouble.

On the basis of the seventh possible design technical solution, the present embodiment further specifically proposes a possible design eight for determining a dynamic image display area based on a result of identifying a display interface from a video image, that is, determining whether the face is a false face, and the method further includes, but is not limited to, the following steps S901 to S902.

And S901, acquiring two frames of video images corresponding to different moments, wherein the two frames of video images come from the camera and are used for reflecting the field condition in the accommodating cavity of the person.

In the step S901, the two frames of video images and the at least one frame of video image are captured by the same camera, wherein the two frames of video images are acquired by the camera respectively when the display interface and the lens are at the same spatial position, two or either of the two frames of video images may be a video image of the at least one frame of video image, or the two frames of video images may also be other than the at least one frame of video image and at least one of the at least one frame of video image is a video image respectively captured by the camera when the display interface and the lens are at the same spatial position, so as to obtain the occupation position of the dynamic image display area in the at least one frame of video image based on the occupation positions of the dynamic image display area in the two frames of video images. The time difference between the two video images may be, for example, 1 second or 1 minute.

S902, determining the dynamic image display area according to the similarity calculation result of the local video image contents in the two frames of video images, wherein the local video image contents refer to the video image contents respectively defined by the same dynamically changed local area boundary in the two frames of video images, and the local area boundary refers to the boundary used for dividing the local video images in the video images.

In the step S902, the similarity calculation method of the local video image content may be implemented by, but not limited to, a conventional structural similarity calculation method or a cosine similarity calculation method. Because the display playing content of the display interface is a dynamic image picture, the change amplitude of the video image content in the corresponding dynamic image display area is relatively large, so that the area with large video image content change can be identified according to the similarity calculation result of the local video image content in the two frames of video images so as to be used as the dynamic image display area.

Therefore, through the eight possible designs described in the steps S901 to S902, the occupied position of the display interface in the video image can be identified according to the local image similarity acquisition result of the two frames of video images, and the dynamic image display area can be automatically obtained, so that manual determination is not needed, and the practical application is facilitated.

Based on the above technical solution of the possible design eight, the present embodiment further specifically proposes a possible design nine for accurately positioning a dynamic image display area, that is, determining the dynamic image display area according to a similarity calculation result of local video image contents in the two frames of video images, including but not limited to using any one of the following manners (a) to (D) or any combination thereof.

The method (A) includes but is not limited to the following steps SA 1-SA 3:

SA1, sliding a first image segmentation line horizontally from the left end to the right in the two frames of video images synchronously;

SA2, in the sliding process, performing similarity calculation on the video image contents in two right local areas in real time, wherein the two right local areas are local areas on the right side of the first image dividing line in the two frames of video images respectively in one-to-one correspondence;

and SA3, when the similarity calculation result is at an inflection point from small to large, taking the right area of the first image dividing line as the dynamic image display area.

In the foregoing steps SA 1-SA 3, as shown in fig. 2, it is considered that in two frames of video images, the content of the video image in the dynamic image display area (i.e. the diagonal line area in fig. 2) changes relatively greatly, while the content of the video image in the other area changes relatively little or no, so that as the first image dividing line slides horizontally to the right in synchronization in the two frames of video images, the occupation ratio of the dynamic image display area in the two right partial areas will become larger and larger, and the similarity between the two right partial areas will decrease continuously (i.e. from the x abscissa₀To the abscissa x₁And the abscissa x₂Until the first image dividing line slides to the left boundary position of the dynamic image display area, the minimum value of the similarity is reached, and then when the horizontal sliding to the right is continued, the proportion of the dynamic image display area in the two right local areas is smaller and smaller, so that the similarity of the two right local areas is continuously increased (namely, when the horizontal sliding is performed from the abscissa x)₂To the abscissa x₃In the sliding process), when the similarity of the two right local areas is at an inflection point from small to large, the right area of the first image segmentation line is taken as the dynamic image display area, and a preliminary positioning result is obtained.

The method (B) includes, but is not limited to, the following steps SB 1-SB 3:

horizontally sliding a second image dividing line from the right end to the left synchronously in the two frames of video images;

performing similarity calculation on the video image contents in two left local areas in real time in the sliding process, wherein the two left local areas are respectively local areas on the left side of the second image dividing line in the two frames of video images in a one-to-one correspondence manner;

and SB3, when the similarity calculation result is at an inflection point from small to large, taking the left area of the second image dividing line as the dynamic image display area.

The method (C) includes but is not limited to the following steps SC 1-SC 3:

SC1, sliding vertically a third image dividing line from the upper end downwards in the two frames of video images synchronously;

SC2, in the sliding process, carrying out similarity calculation on the video image contents of two lower side local areas in real time, wherein the two lower side local areas are respectively local areas positioned on the lower side of the third image dividing line in the two frames of video images in a one-to-one correspondence manner;

and SC3, when the similarity calculation result is at an inflection point from small to large, taking a lower area of the third image dividing line as the dynamic image display area.

The method (D) includes, but is not limited to, the following steps SD 1-SD 3:

SD1, sliding a fourth image segmentation line vertically from the lower end upwards in the two frames of video images synchronously;

performing similarity calculation on the video image contents in two upper local areas in real time in the sliding process, wherein the two upper local areas are respectively local areas on the upper sides of the fourth image partition lines in the two frames of video images in a one-to-one correspondence manner;

and SD3, when the similarity calculation result is at an inflection point from small to large, taking the upper region of the fourth image dividing line as the dynamic image display region.

The calculation principle for determining the dynamic image display area described in the foregoing modes (B) to (D) can be referred to as the foregoing mode (a), and details thereof are omitted here. In addition, considering that the dynamic image display area occupies a plurality of different positions in the video image (for example, occupies the entire right area, left area, upper area, lower area, corner area, middle area, etc.), the foregoing modes (a) to (D) can be arbitrarily combined to obtain the dynamic image display area with more precise positioning. For example, as shown in fig. 3, the overlapping region located in the right region of the first image partition line, the left region of the second image partition line, the lower region of the third image partition line, and the upper region of the fourth image partition line may be used as the moving image display region, so that the occupied position of the moving image display region in the video image may be accurately determined, and the accuracy of determining the subsequent false face may be further ensured.

Therefore, through the above-described ninth possible design, the occupied position of the dynamic image display area in the video image can be determined according to the local image similarity acquisition result of the two frames of video images from one or any combination of the left direction, the right direction, the upper direction and the lower direction, so that the accuracy of subsequent shutdown control or people trapping alarm is further ensured.

As shown in fig. 4, a second aspect of this embodiment provides a virtual device for implementing the energy saving control method for a multimedia device in any one of the first aspect or the first aspect, where the virtual device includes an information obtaining unit and a device control unit, which are connected in a communication manner;

For the working process, working details and technical effects of the foregoing apparatus provided in the second aspect of this embodiment, reference may be made to the energy saving control method in any one of the first aspect and the first aspect, which is not described herein again.

As shown in fig. 5, a third aspect of the present embodiment provides a computer device for executing the energy saving control method of the multimedia device according to any one of the first aspect or any one of the possible designs of the first aspect, including a memory, a processor, and a transceiver, which are communicatively connected in sequence, where the memory is used for storing a computer program, the transceiver is used for transceiving a message, and the processor is used for reading the computer program and executing the energy saving control method according to any one of the possible designs of the first aspect or the first aspect. For example, the Memory may include, but is not limited to, a Random-Access Memory (RAM), a Read-Only Memory (ROM), a Flash Memory (Flash Memory), a First-in First-out (FIFO), and/or a First-in Last-out (FILO), and the like; the transceiver may be, but is not limited to, a WiFi (wireless fidelity) wireless transceiver, a bluetooth wireless transceiver, a GPRS (General Packet Radio Service) wireless transceiver, and/or a ZigBee (ZigBee protocol, low power local area network protocol based on ieee802.15.4 standard) wireless transceiver, etc. The processor may not be limited to the microprocessor of the model number employing the STM32F105 family. In addition, the computer device may also include, but is not limited to, a power module, a display screen, and other necessary components.

For the working process, working details, and technical effects of the foregoing computer device provided in the third aspect of this embodiment, reference may be made to the energy saving control method in any one of the first aspect or the first aspect, which is not described herein again.

A fourth aspect of the present embodiment provides a computer-readable storage medium storing instructions for implementing the energy saving control method for a multimedia device according to any one of the first aspect and the possible designs of the first aspect, that is, the computer-readable storage medium has instructions stored thereon, and when the instructions are executed on a computer, the computer performs the energy saving control method according to any one of the possible designs of the first aspect or the first aspect. The computer-readable storage medium refers to a carrier for storing data, and may include, but is not limited to, floppy disks, optical disks, hard disks, flash memories, flash disks and/or Memory sticks (Memory sticks), etc., and the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

For a working process, working details, and technical effects of the foregoing computer-readable storage medium provided in the fourth aspect of this embodiment, reference may be made to the first aspect or any one of the possible designs of the energy saving control method in the first aspect, and details are not described herein again.

A fifth aspect of the present embodiment provides a computer program product containing instructions for causing a computer to execute the method for controlling energy saving of a multimedia device according to the first aspect or any one of the possible designs of the first aspect when the instructions are executed on the computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices.

The embodiments described above are merely illustrative, and may or may not be physically separate, if referring to units illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications may be made to the embodiments described above, or equivalents may be substituted for some of the features described. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.

Claims

1. A method for controlling power saving of a multimedia device, comprising:

acquiring door state information of the personnel accommodating cavity;

2. The energy saving control method according to claim 1, wherein after sending a power-on instruction to the multimedia device that is inside the human accommodation chamber and is currently in the power-off state, the method further comprises:

3. The energy saving control method according to claim 1, wherein after sending a power-on instruction to the multimedia device that is inside the human accommodation chamber and is currently in the power-off state, the method further comprises:

if no one exists, starting a first timer;

4. The energy saving control method according to claim 2 or 3, wherein after determining whether or not a person is present in the person accommodating chamber, the method further comprises:

if the person is present, starting a second timer;

5. The energy-saving control method according to claim 1, wherein the acquiring of the door state information of the personnel accommodation cavity comprises:

6. The energy saving control method according to claim 2 or 3, wherein determining whether there is a person in the person accommodating chamber includes:

detecting whether the at least one frame of video image contains a human face;

7. The energy-saving control method according to claim 6, wherein if the face is included, the method further comprises:

judging whether the face is a false face;

8. An energy-saving control device of multimedia equipment is characterized by comprising an information acquisition unit and an equipment control unit which are connected in a communication way;

9. A computer device, comprising a memory, a processor and a transceiver which are connected in communication in sequence, wherein the memory is used for storing a computer program, the transceiver is used for sending and receiving messages, and the processor is used for reading the computer program and executing the energy-saving control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having stored thereon instructions for performing the energy saving control method according to any one of claims 1 to 7 when the instructions are run on a computer.