Video monitoring screen energy-saving display system and method and storage medium

Abstract

The invention belongs to the technical field of video display management and control, and particularly relates to a video monitoring screen energy-saving display system and method and a storage medium, and the system comprises an intelligent content perception unit, an environment self-adaption unit, a dynamic backlight adjustment unit, a standby mode control unit and a multi-screen collaborative management unit. According to the invention, the intelligent content sensing unit analyzes the dynamic characteristics of a picture in real time based on an AI algorithm, and the environment adaptive unit periodically reads the data of the temperature and humidity sensor and the light intensity sensor and reasonably carries out heat dissipation control. The dynamic backlight adjusting unit dynamically adjusts the brightness of a backlight source and the backlight intensity of a local area according to content characteristic parameters and the ambient light intensity, and the standby mode control unit combines a hierarchical standby mechanism to implement differential power consumption control on a master control screen and a slave screen. And the display energy consumption is obviously reduced while the monitoring performance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of video display control, and in particular to an energy-saving display system, method and storage medium for a video monitoring screen. Background Art

[0002] Video surveillance screens are devices used to display real-time video images or playback videos collected by video surveillance systems. They allow users to intuitively observe the dynamic situation in the monitored area. Traditional video surveillance screens usually use a full-power constant display mode to ensure monitoring continuity, resulting in serious energy waste. Therefore, the display process of video surveillance screens needs to be adjusted to reduce energy consumption.

[0003] Currently, video surveillance screen display control mainly adopts single parameter adjustment, fixed timing control, and global uniform adjustment. However, adjusting screen brightness only through ambient light sensors cannot identify the importance of the content on the surveillance screen. Switching to energy-saving mode according to a preset schedule cannot adapt to dynamic monitoring needs. The uniform reduction of resolution or refresh rate across the entire screen can easily miss key details. It is impossible to optimize display energy consumption while ensuring monitoring performance and operational safety, resulting in a low level of intelligence and automation.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a video surveillance screen energy-saving display system, method and storage medium, which solves the problem that the existing technology cannot optimize the display energy consumption of the video surveillance screen while ensuring the monitoring display effect and operation safety, and has low intelligence and automation levels.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A video surveillance screen energy-saving display system includes an intelligent content perception unit, an environment adaptation unit, a dynamic backlight adjustment unit, a standby mode control unit, and a multi-screen collaborative management unit. The intelligent content perception unit analyzes the dynamic content of the surveillance screen in real time based on an image recognition algorithm and generates content feature parameters.

[0008] The environmental adaptation unit periodically reads data from the temperature and humidity sensors and the light intensity sensor and shares it in real time to the dynamic backlight adjustment unit and the multi-screen collaborative management unit; the dynamic backlight adjustment unit dynamically adjusts the backlight brightness and the backlight intensity of the local area according to the content feature parameters and the ambient light intensity; the standby mode control unit is used to control the screen standby mode, and the multi-screen collaborative management unit is used to optimize the signal distribution and power consumption coordination among multiple screens.

[0009] Furthermore, the specific operation process of the intelligent content perception unit is as follows:

[0010] Receives raw video surveillance data streams in real time, pre-processes the input images, and uses a built-in lightweight convolutional neural network to analyze the image content frame by frame. The neural network model extracts spatiotemporal features from the image, identifies the boundary coordinates between the dynamic area and the static background, and calculates the pixel ratio and motion speed of the dynamic area.

[0011] When no dynamic changes are detected for more than ten consecutive frames, a static picture flag signal is generated, and the dynamic area coordinates and refresh rate requirement level are transmitted to the dynamic backlight adjustment module through a dedicated data channel; if the static picture lasts longer than the corresponding preset duration threshold, a standby trigger instruction is sent to the standby mode control unit.

[0012] Furthermore, the environmental adaptation unit combines temperature and humidity data with the cooling system to dynamically adjust the cooling strategy as follows:

[0013] When the temperature is below 40°C, heat is dissipated only through natural convection; when the temperature rises to the 40-50°C range, the low-speed fan mode is started and some grilles are closed to form a directional air duct; if the temperature exceeds 50°C, it switches to high-speed fan mode and opens all heat dissipation holes; when the humidity value exceeds 80% RH and lasts for 10 minutes, the anti-condensation heating film is automatically activated.

[0014] Furthermore, the specific operation process of the dynamic backlight adjustment unit is as follows:

[0015] Receives dynamic area coordinates from the intelligent content sensing unit and real-time ambient light intensity data from the environmental adaptation unit, and determines the overall backlight baseline value based on the ambient light intensity data and a preset brightness mapping table. Combined with the dynamic area coordinate information, it divides the screen into several independently controlled backlight zones, using 120% of the baseline brightness for zones containing dynamic objects, while reducing the brightness to 40% of the baseline for static areas.

[0016] When a dynamic object moves across partitions, its motion trajectory is predicted through the interpolation algorithm, and the backlight intensity of the adjacent partitions is adjusted in advance; the backlight control signal is transmitted through I 2 C bus is sent to the display driver circuit, and the driver circuit adjusts the current value of the LED backlight array according to the signal.

[0017] Furthermore, during the operation of the dynamic backlight adjustment unit, if the environment adaptation module detects that the internal temperature of the screen exceeds 45°C, the dynamic backlight adjustment unit automatically lowers the global brightness upper limit by 10% to reduce the heat load.

[0018] Furthermore, the specific operation process of the standby mode control unit is as follows:

[0019] Trigger conditions and initial judgment: Receives a static image signal from the intelligent content perception module, receives a temperature and humidity safety status signal from the environmental adaptation module, and receives a trigger status from an external alarm input. If the static image signal persists for 30 seconds, the standby mode hierarchical switching process is initiated.

[0020] Hierarchical standby mode switching process: Query whether the current screen is the main control screen in the splicing screen;

[0021] If it is a slave screen, it will directly enter the second standby mode, turn off the backlight power supply to maintain the low-voltage power supply of the video signal receiving circuit and the network communication module, keep the backlight drive circuit enabled, and reduce the PWM dimming signal to the lowest duty cycle; send a slave screen sleep state notification to the multi-screen collaborative management module to trigger the load migration of other sub-screens;

[0022] If it is the main control screen, it scans the alarm input signal of the GPIO interface and the network alarm command queue. If there is no alarm, it enters the first standby mode, cuts off the constant current source power supply of the backlight drive circuit, and only maintains the 1.8V standby voltage of the video decoding chip through the LDO regulator, turns off non-essential peripherals, and only retains the network heartbeat packet monitoring; if there is an alarm, it maintains normal working state, and sends the alarm area lighting command to the multi-screen collaborative management module to forcibly wake up the relevant sub-screens;

[0023] Monitoring and wake-up mechanism during standby: The system monitors the wake-up command from the control center through the TCP / IP protocol stack and detects the level changes of digital signals including those from the infrared sensor and the door magnetic switch in real time. When the image resumes dynamic movement, the intelligent content perception unit sends a high-level interrupt signal.

[0024] After detecting the wake-up signal, the PMU is controlled to pre-charge the energy storage capacitor of the backlight driving circuit. In the first standby mode, the backlight driving circuit recovers from a completely power-off state in less than 150ms. In the second standby mode, the PWM duty cycle is directly increased to the target value in less than 50ms. A wake-up completion signal is sent to the multi-screen collaborative management unit to trigger the backlight parameter synchronization and content redistribution of the sub-screen.

[0025] Furthermore, the multi-screen collaborative management unit is communicatively connected to the coordination stability detection and evaluation unit. The coordination stability detection and evaluation unit is used to set a detection period of duration T1. The multi-screen collaborative management unit sends the fault information of all sub-screens during the detection period to the coordination stability detection and evaluation module. The coordination stability detection and evaluation module analyzes the display coordination stability of the video surveillance screen during the detection period, and determines whether to generate an apparent coordination instability signal through analysis. When an apparent coordination instability signal is generated, it is sent to the manager's smart terminal.

[0026] Furthermore, the specific operation process of the stability detection and evaluation module is as follows:

[0027] All faults occurring in the corresponding sub-screen during the detection period are obtained and classified, the number of occurrences of the corresponding type of fault is marked as the sub-screen fault type detection value, the sub-screen fault type detection value is numerically compared with the corresponding preset sub-screen fault type detection threshold, and if the sub-screen fault type detection value exceeds the corresponding preset sub-screen fault type detection threshold, the corresponding type of fault is marked as a triggerable fault of the corresponding sub-screen;

[0028] If there is a triggerable fault in the corresponding sub-screen during the detection period, the corresponding sub-screen will be marked as a non-visible stable sub-screen; if there is no triggerable fault in the corresponding sub-screen during the detection period, a set of preset stability influence weight values ​​will be assigned to each type of fault, and the product of the sub-screen fault class detection value of the corresponding type of fault and the corresponding preset stability influence weight value will be marked as a sub-screen fault class outlier, and the sub-screen fault class outliers of all types of faults involved in the corresponding sub-screen during the detection period will be summed up to obtain a sub-screen fault decision value; the sub-screen fault decision value will be numerically compared with the preset sub-screen fault decision threshold, and if the sub-screen fault decision value exceeds the preset sub-screen fault decision threshold, the corresponding sub-screen will be marked as a non-visible stable sub-screen;

[0029] Obtain the proportion of the number of unstable sub-screens in the monitoring screen during the detection period and mark it as the unstable screen proportion value, compare the unstable screen proportion value with the preset unstable screen proportion threshold, and generate an unstable signal if the unstable screen proportion value exceeds the preset unstable screen proportion threshold;

[0030] If the non-display stable screen occupancy value does not exceed the preset non-display stable screen occupancy threshold, several detection time periods are set within the detection period. If a sub-screen fails during the corresponding detection time period, the corresponding detection time period is marked as a cooperation-affected time period; if no sub-screen fails during the corresponding detection time period, the corresponding detection time period is marked as a cooperation-excellent time period;

[0031] The number of coordination influence time periods obtained during the detection period is marked as the coordination influence detection value, the number of coordination influence time periods between two adjacent groups of excellent coordination time periods is marked as the coordination influence duration value, the number of coordination influence duration values ​​exceeding the preset coordination influence duration threshold during the detection period is marked as the coordination influence anomaly value, and the coordination influence duration value with the largest value during the detection period is marked as the coordination influence risk amplitude value; the coordination stability evaluation value is obtained by weightedly summing the coordination influence detection value, the coordination influence anomaly value and the coordination influence risk amplitude value, the coordination stability evaluation value is numerically compared with the preset coordination stability evaluation threshold value, and if the coordination stability evaluation value exceeds the preset coordination stability evaluation threshold value, an obvious coordination instability signal is generated.

[0032] Furthermore, the present invention also proposes a video monitoring screen energy-saving display method, comprising the following steps:

[0033] Step 1: Analyze the dynamic content of the monitoring screen in real time and generate content feature parameters;

[0034] Step 2: Read the data from the temperature and humidity sensor and the light intensity sensor;

[0035] Step 3: Dynamically adjust the backlight brightness and local area backlight intensity;

[0036] Step 4: Make a standby judgment and automatically switch to standby mode.

[0037] Furthermore, the present invention also proposes a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned video monitoring screen energy-saving display method is implemented.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. In the present invention, the intelligent content perception unit analyzes the dynamic characteristics of the picture in real time based on the AI ​​algorithm, the environmental adaptation unit periodically reads the environmental data and reasonably controls the heat dissipation, the dynamic backlight adjustment unit dynamically adjusts the backlight brightness and the backlight intensity of the local area, and the standby mode control unit combines the hierarchical standby mechanism to implement differentiated power consumption control for the master screen and the slave screen. Through multi-module collaboration and data closed-loop control, the monitoring performance is guaranteed while improving the display energy saving effect;

[0040] 2. In the present invention, the display coordination stability of the video surveillance screen during the detection period is analyzed by the coordination stability detection and evaluation unit. The analysis is used to determine whether an unstable display coordination signal is generated. When an unstable display coordination signal is generated, the management personnel are reminded to strengthen the subsequent control of the monitoring screen and replace the corresponding sub-screen in time to ensure the subsequent display stability and smooth operation, thereby reducing the difficulty of monitoring the monitoring screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0042] Figure 1 This is a system block diagram of Embodiment 1 of the present invention;

[0043] Figure 2 This is a system block diagram of Embodiment 2 of the present invention;

[0044] Figure 3 This is a flow chart of the method of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example 1: Figure 1 As shown in the figure, the present invention proposes an energy-saving display system for video surveillance screens, including an intelligent content perception unit, an environment adaptation unit, a dynamic backlight adjustment unit, a standby mode control unit, and a multi-screen collaborative management unit. The intelligent content perception unit analyzes the dynamic content of the surveillance screen in real time based on an image recognition algorithm, generates content feature parameters, and sends them to the dynamic backlight adjustment unit and the standby mode control unit. The specific operation process is as follows:

[0047] It receives raw video surveillance data streams in real time, pre-processes the input images (including noise reduction and resolution adaptation), and uses a built-in lightweight convolutional neural network (CNN) to analyze the image content frame by frame. The neural network model extracts spatiotemporal features (such as motion vectors, brightness distribution, and object edge information) from the image to identify the boundary coordinates between dynamic areas (such as moving vehicles and human activity) and static backgrounds, and simultaneously calculates the pixel ratio and motion speed of the dynamic areas.

[0048] When no dynamic changes are detected for more than ten consecutive frames, a static picture flag signal is generated, and the dynamic area coordinates and refresh rate requirement level (divided into three levels: high / medium / low) are transmitted to the dynamic backlight adjustment module through a dedicated data channel; if the static picture lasts for more than the corresponding preset time threshold (the default is 30 seconds), a standby trigger instruction is sent to the standby mode control unit.

[0049] In addition, the intelligent content perception unit adopts an edge computing architecture and completes feature extraction through locally deployed FPGA chips, avoiding uploading the original video stream to the cloud and reducing transmission delay and bandwidth usage.

[0050] The environmental adaptation unit periodically reads data from the temperature and humidity sensor (such as SHT35) and the light intensity sensor (such as BH1750), sampling once per second and sharing it in real time with the dynamic backlight adjustment unit and the multi-screen collaborative management unit. The environmental adaptation unit combines the temperature and humidity data with the cooling system to dynamically adjust the cooling strategy as follows:

[0051] When the temperature is below 40°C, heat is dissipated only through natural convection (keep the fan stopped and open the heat dissipation grille); when the temperature rises to the 40-50°C range, the low-speed fan mode is started (speed 800RPM) and some grilles are closed to form a directional air duct; if the temperature exceeds 50°C, it switches to high-speed fan mode (1500RPM) and opens all heat dissipation holes; when the humidity value exceeds 80%RH and lasts for 10 minutes, the anti-condensation heating film is automatically activated to prevent circuit short circuit.

[0052] The dynamic backlight adjustment unit dynamically adjusts the backlight brightness and local area backlight intensity based on content feature parameters and ambient light intensity. The specific operation process of the dynamic backlight adjustment unit is as follows:

[0053] Receive the dynamic area coordinates from the intelligent content perception unit and the real-time ambient light intensity data provided by the environment adaptation unit, and determine the overall backlight reference value according to the ambient light intensity data and the preset brightness mapping table (for example: when the ambient light is less than 50 lux at night, the global brightness limit is set to 200 cd / m 2 ; When the daytime lux is greater than 500 lux, it is increased to 500 cd / m 2 ); Combined with the dynamic area coordinate information, the screen is divided into several independently controlled backlight zones (such as a 16×9 grid). The zones containing dynamic objects use 120% of the baseline brightness, while the static areas are reduced to 40% of the baseline value;

[0054] When a dynamic object moves across partitions, its motion trajectory is predicted through the interpolation algorithm, and the backlight intensity of the adjacent partitions is adjusted in advance; the backlight control signal is transmitted through I 2 The C bus sends the signal to the display driver circuit, which adjusts the current value of the LED backlight array based on the signal, achieving a millisecond response. In addition, during the operation of the dynamic backlight adjustment unit, if the environmental adaptation module detects that the internal temperature of the screen exceeds 45°C, the dynamic backlight adjustment unit automatically lowers the global brightness limit by 10% to reduce the heat load.

[0055] The standby mode control unit is used to control the screen standby mode. The specific operation process of the standby mode control unit is as follows:

[0056] S1. Trigger conditions and initial judgment: Determine whether to start the standby process based on the following conditions:

[0057] Input signal source: Receives static image logo signals from the intelligent content perception module, receives temperature and humidity safety status signals from the environment adaptation module (e.g., allowing standby when the temperature is ≤ 60°C), and receives the trigger status of external alarm inputs (e.g., infrared sensors, network alarm commands) (a high level indicates an alarm is activated);

[0058] Trigger logic: If the static image signal is maintained for 30 seconds (default value, configurable), the standby mode hierarchical switching process is started;

[0059] S2. Hierarchical standby mode switching process: The standby mode control module performs differentiated control according to the screen role (master screen / slave screen) and alarm status:

[0060] S21. Master screen determination: Check whether the current screen is the master screen in the splicing screen (referring to the single screen that assumes the core control function in the splicing screen system). Specify a screen as the master screen through physical port priority (such as HDMI port 1) or software configuration, and the rest as slave screens. It should be noted that the master screen needs to maintain basic communication capabilities to maintain overall system coordination.

[0061] S22. Mode selection and execution: If it is a slave screen, it directly enters the second standby mode, turns off the backlight power supply to maintain low-voltage power supply (power consumption <5W) for the video signal receiving circuit (such as HDMI decoding chip) and the network communication module (such as WiFi / Ethernet PHY), and the backlight drive circuit remains enabled (EN pin is set high). The PWM dimming signal is reduced to the minimum duty cycle (0.1%) to ensure that the brightness can be restored within 50ms; a slave screen sleep status notification is sent to the multi-screen collaborative management module to trigger load migration of other slave screens (such as allocating their display content to adjacent screens);

[0062] If it is the main control screen, it scans the alarm input signal of the GPIO interface (such as infrared sensor trigger) and the network alarm command queue. If there is no alarm, it enters the first standby mode. When entering the first standby mode, it cuts off the constant current source power supply of the backlight drive circuit (such as turning off the VCC input of the TI TPS61165 chip), and only maintains the 1.8V standby voltage of the video decoding chip through the LDO regulator (power consumption <2W), turns off non-essential peripherals (such as fans, auxiliary sensors), and only retains network heartbeat packet monitoring (sending a keep-alive signal every 5 seconds); if there is an alarm, it maintains normal working status, and sends an alarm area lighting command to the multi-screen collaborative management module to forcibly wake up the relevant sub-screens;

[0063] S3. Monitoring and wake-up mechanism during standby:

[0064] S31. Continuous monitoring of signals: Network heartbeat packets: Monitors the control center's wake-up commands (such as the device wake-up command in the ONVIF protocol) through the TCP / IP protocol stack; GPIO alarm input: Real-time detection of level changes in digital signals such as infrared sensors and door magnetic switches; Intelligent content perception unit wake-up signal: When the image resumes dynamic, the intelligent content perception unit sends a high-level interrupt signal;

[0065] S32. Wake-up process: After detecting the wake-up signal, control the PMU to pre-charge the energy storage capacitor of the backlight drive circuit (to avoid instantaneous overcurrent of the LED). In the first standby mode, the backlight drive circuit recovers from a completely power-off state in less than 150ms. In the second standby mode, directly increase the PWM duty cycle to the target value in less than 50ms; send a wake-up completion signal to the multi-screen collaborative management unit to trigger the backlight parameter synchronization and content redistribution of the sub-screen.

[0066] In the splicing screen application scenario, the multi-screen collaborative management unit optimizes the signal distribution and power consumption coordination among multiple screens. For example, it receives the split-screen content distribution map from the intelligent content perception unit (marking the effective area displayed by each sub-screen), calculates the coverage ratio of the effective area (for example, a sub-screen only displays a fixed LOGO, with a coverage rate of 5%), and sends a sleep command to the sub-screen (turning off the backlight and non-essential circuits);

[0067] For sub-screens that need to work, the multi-screen collaborative management unit synchronizes the backlight parameters (brightness, color temperature) of each screen and generates a unified color calibration table, which is transmitted to each sub-screen controller via the HDMI-CEC protocol to ensure color consistency of the picture. When a sub-screen is turned off due to standby mode, the multi-screen collaborative management unit automatically migrates its display content to the adjacent sub-screen and reallocates backlight resources. In addition, it is used to monitor the working status of each sub-screen (such as current and temperature) in real time. If a sub-screen failure is detected, the redundant screen takeover process is immediately started, and the fault information is recorded in the log system for maintenance.

[0068] The technical solution of the present invention has achieved a dual breakthrough in energy consumption optimization and functional reliability in the field of video surveillance display through the deep integration of intelligent content perception and dynamic environment control. It analyzes the dynamic characteristics of the picture in real time based on the AI ​​algorithm, accurately matches the local backlight intensity with the ambient light conditions, and implements differentiated power consumption control for the master screen and the slave screen in combination with the graded standby mechanism. In typical scenarios, it can reduce energy consumption by more than 40%. At the same time, through the pre-charging circuit and multi-screen collaborative load migration technology, it ensures that the standby wake-up response time is ≤200ms, meeting the real-time requirements of security monitoring.

[0069] In addition, the temperature control strategy and exception handling mechanism of the environmental adaptive unit further ensure the stable operation of the system under harsh conditions such as high temperature and high humidity, avoiding equipment aging or monitoring blind spots caused by excessive power reduction in traditional solutions; after actual measurement and verification, the system can achieve dynamic power consumption closed-loop adjustment while maintaining industry standards for picture clarity (MTF>0.8) and color reproduction (ΔE<3), which is particularly suitable for scenarios such as smart cities and industrial security that operate 24 / 7, and has both energy-saving economy and operation and maintenance cost advantages.

[0070] Example 2: Figure 2As shown, the difference between this embodiment and the first embodiment is that the multi-screen collaborative management unit is communicatively connected to the coordination stability detection and evaluation unit, and the coordination stability detection and evaluation unit is used to set a detection period of duration T1. Preferably, T1 is ten days; the multi-screen collaborative management unit sends the fault information of all sub-screens within the detection period to the coordination stability detection and evaluation module, and the coordination stability detection and evaluation module analyzes the display coordination stability of the video surveillance screen within the detection period;

[0071] Through analysis, it is determined whether an unstable display signal is generated. When an unstable display signal is generated, it is sent to the manager's smart terminal. The smart terminal displays the unstable display signal and issues an early warning to remind the manager to strengthen the subsequent control of the monitoring screen and replace the corresponding sub-screen in time to ensure the subsequent display stability and smooth operation. The specific operation process of the stability detection and evaluation module is as follows:

[0072] All faults occurring in the corresponding sub-screen during the detection period are obtained and classified, and the number of occurrences of the corresponding type of fault is marked as the sub-screen fault type detection value. The sub-screen fault type detection value is numerically compared with the corresponding preset sub-screen fault type detection threshold. If the sub-screen fault type detection value exceeds the corresponding preset sub-screen fault type detection threshold, it indicates that the corresponding type of fault occurs frequently during the operation of the corresponding sub-screen during the detection period, and the corresponding type of fault is marked as an easily triggered fault of the corresponding sub-screen;

[0073] If there is a triggerable fault in the corresponding sub-screen during the detection period, the corresponding sub-screen will be marked as a non-stable sub-screen; if there is no triggerable fault in the corresponding sub-screen during the detection period, a set of preset stability impact weight values ​​greater than zero will be assigned to each type of fault, and the more serious the adverse impact of the corresponding type of fault on the stable and safe operation of the sub-screen, the greater the value of the preset stability impact weight value corresponding to it;

[0074] The product of the sub-screen fault class detection value of the corresponding type of fault and the corresponding preset stability influence weight value is marked as the sub-screen fault class outlier, and the sub-screen fault class outliers of all types of faults involved in the corresponding sub-screen during the detection period are summed up to obtain the sub-screen fault decision value; the sub-screen fault decision value is numerically compared with the preset sub-screen fault decision threshold; if the sub-screen fault decision value exceeds the preset sub-screen fault decision threshold, the corresponding sub-screen is marked as a non-stable sub-screen;

[0075] The ratio of the number of unstable sub-screens in the monitoring screen during the detection period is obtained and marked as the unstable screen ratio. The unstable screen ratio is compared with the preset unstable screen ratio threshold. If the unstable screen ratio exceeds the preset unstable screen ratio threshold, it indicates that the coordination stability of each sub-screen in the video monitoring screen during the detection period is high, and a display coordination instability signal is generated;

[0076] If the non-display stable screen occupancy value does not exceed the preset non-display stable screen occupancy threshold, several detection periods are set within the detection period, and the duration of all detection periods is the same; if a sub-screen fails during the corresponding detection period, the corresponding detection period is marked as a cooperation-affected period; if no sub-screen fails during the corresponding detection period, the corresponding detection period is marked as a cooperation-excellent period;

[0077] The number of cooperation influence periods obtained during the detection period is marked as the cooperation influence detection value, the number of cooperation influence periods between two adjacent groups of excellent cooperation periods is marked as the cooperation influence duration value, the number of cooperation influence duration values ​​exceeding a preset cooperation influence duration threshold during the detection period is marked as the cooperation influence abnormal value, and the cooperation influence duration value with the largest value during the detection period is marked as the cooperation influence risk amplitude value;

[0078] The coordination stability evaluation value is obtained by performing weighted summation on the coordination impact detection value, the coordination impact deviation value, and the coordination impact risk amplitude, that is, the coordination impact detection value, the coordination impact deviation value, and the coordination impact risk amplitude are respectively assigned corresponding preset weight coefficients, and the coordination impact detection value, the coordination impact deviation value, and the coordination impact risk amplitude are respectively multiplied by the corresponding preset weight coefficients, and the sum of the three sets of product results is marked as the coordination stability evaluation value; it should be noted that the larger the value of the coordination stability evaluation value, the worse the overall coordination stability of each sub-screen in the video surveillance screen during the detection period;

[0079] The coordination stability evaluation value is numerically compared with the preset coordination stability evaluation threshold. If the coordination stability evaluation value exceeds the preset coordination stability evaluation threshold, it indicates that the coordination stability of each sub-screen in the video surveillance screen during the detection period is generally poor, which is not conducive to ensuring the stable display and smooth operation of the surveillance screen, and an apparent coordination instability signal is generated.

[0080] Example 3: Figure 3 As shown, the difference between this embodiment and the first and second embodiments is that the present invention proposes a video surveillance screen energy-saving display method, comprising the following steps:

[0081] Step 1: Analyze the dynamic content of the monitoring screen in real time and generate content feature parameters;

[0082] Step 2: Read the data from the temperature and humidity sensor and the light intensity sensor;

[0083] Step 3: Dynamically adjust the backlight brightness and local area backlight intensity;

[0084] Step 4: Make a standby judgment and automatically switch to standby mode.

[0085] The present invention also provides a computer storage medium storing a computer program that, when executed by a processor, implements the aforementioned video surveillance screen energy-saving display method. Those skilled in the art will appreciate that all or part of the steps of the aforementioned method embodiments can be accomplished by hardware associated with the computer program. The aforementioned computer program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the aforementioned method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0086] The working principle of the present invention: When in use, the intelligent content perception unit analyzes the dynamic characteristics of the picture in real time based on the AI ​​algorithm, the environmental adaptation unit periodically reads the data of the temperature and humidity sensor and the light intensity sensor and reasonably performs heat dissipation control, and the dynamic backlight adjustment unit dynamically adjusts the backlight brightness and the local area backlight intensity according to the content feature parameters and the ambient light intensity. The standby mode control unit combines the hierarchical standby mechanism to implement differentiated power consumption control for the master screen and the slave screen. The multi-screen collaborative management unit optimizes the signal distribution and power consumption coordination between multiple screens. Through multi-module collaboration and data closed-loop control, it significantly reduces energy consumption while ensuring monitoring performance. It is suitable for scenarios such as smart cities and industrial security, and has a high level of intelligence and automation.

[0087] The thresholds, preset values, and preset ranges in the technical solution of the present invention are set for result comparison and analysis to determine whether the results are good or bad. The values ​​are set based on a combination of large-scale model analysis of sample data and manual experience to enter and store them, and can also be appropriately adjusted based on seasonal or common sense influencing conditions.

[0088] The settings of weight coefficients, influencing factors, etc. are assigned specific values ​​according to the influence of each parameter on the result, which ultimately reflects the impact on the result. They are also set and entered into storage through a combination of large-scale model analysis of sample data and manual experience. Appropriate adjustments can also be made based on seasonal or common-sense influencing conditions.

[0089] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention and enable those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A video monitoring screen energy-saving display system, characterized in that: It includes an intelligent content perception unit, an environmental adaptation unit, a dynamic backlight adjustment unit, a standby mode control unit and a multi-screen collaborative management unit; the intelligent content perception unit analyzes the dynamic content of the monitoring screen in real time based on the image recognition algorithm and generates content feature parameters; the environmental adaptation unit periodically reads the data of the temperature and humidity sensor and the light intensity sensor and shares them in real time; the dynamic backlight adjustment unit dynamically adjusts the backlight brightness and the backlight intensity of the local area according to the content feature parameters and the ambient light intensity; the standby mode control unit is used to control the screen standby mode, and the multi-screen collaborative management unit is used to optimize the signal distribution and power consumption coordination between multiple screens.

2. The energy-saving display system for video surveillance screen according to claim 1, characterized in that: The specific operation process of the intelligent content perception unit is as follows: real-time reception of the original data stream of video surveillance, pre-processing of the input picture, calling the built-in lightweight convolutional neural network to analyze the picture content frame by frame. The neural network model extracts the spatiotemporal features in the picture, identifies the boundary coordinates of the dynamic area and the static background, and calculates the pixel ratio and movement speed of the dynamic area. When no dynamic changes are detected for more than ten consecutive frames, a static picture flag signal is generated, and the dynamic area coordinates and refresh rate requirement level are transmitted to the dynamic backlight adjustment module through a dedicated data channel. If the static picture lasts for more than the corresponding preset time threshold, a standby trigger instruction is sent to the standby mode control unit.

3. The energy-saving display system for video surveillance screen according to claim 1, characterized in that: The environmental adaptive unit combines temperature and humidity data with the cooling system to dynamically adjust the cooling strategy as follows: When the temperature is below 40°C, heat is dissipated only through natural convection; when the temperature rises to the 40-50°C range, the low-speed fan mode is started and some grilles are closed to form a directional air duct; if the temperature exceeds 50°C, it switches to high-speed fan mode and opens all heat dissipation holes; when the humidity value exceeds 80% RH and lasts for 10 minutes, the anti-condensation heating film is automatically activated.

4. The energy-saving display system for video surveillance screen according to claim 1, characterized in that: The specific operation process of the dynamic backlight adjustment unit is as follows: Receives dynamic area coordinates from the intelligent content sensing unit and real-time ambient light intensity data from the environmental adaptation unit, and determines the overall backlight baseline value based on the ambient light intensity data and a preset brightness mapping table. Combined with the dynamic area coordinate information, it divides the screen into several independently controlled backlight zones, using 120% of the baseline brightness for zones containing dynamic objects, while reducing the brightness to 40% of the baseline for static areas. When a dynamic object moves across partitions, its motion trajectory is predicted through an interpolation algorithm, and the backlight intensity of adjacent partitions is adjusted in advance; Backlight control signal is transmitted through I 2 C bus is sent to the display driver circuit, and the driver circuit adjusts the current value of the LED backlight array according to the signal.

5. The energy-saving display system for video surveillance screen according to claim 4, characterized in that: During the operation of the dynamic backlight adjustment unit, if the environmental adaptation module detects that the internal temperature of the screen exceeds 45°C, the dynamic backlight adjustment unit automatically lowers the global brightness upper limit by 10% to reduce the heat load.

6. The energy-saving display system for video surveillance screen according to claim 1, characterized in that: The specific operation of the standby mode control unit includes trigger conditions and initial judgment, hierarchical standby mode switching process, and monitoring and wake-up mechanism during standby.

7. The energy-saving display system for video surveillance screen according to claim 1, characterized in that: The multi-screen collaborative management unit is communicated with the coordination stability detection and evaluation unit. The coordination stability detection and evaluation module analyzes the display coordination stability of the video surveillance screen during the detection period, and sends it to the manager's smart terminal when an unstable display signal is generated.

8. The energy-saving display system for video surveillance screen according to claim 7, characterized in that: The specific operation process of the stability detection and evaluation module is as follows: If there is a triggerable fault in the corresponding sub-screen during the detection period, the corresponding sub-screen will be marked as a non-stable sub-screen; if there is no triggerable fault in the corresponding sub-screen during the detection period, the sub-screen fault type difference values ​​of all types of faults involved in the corresponding sub-screen during the detection period are summed up to obtain a sub-screen fault decision value. If the sub-screen fault decision value exceeds the preset sub-screen fault decision threshold, the corresponding sub-screen will be marked as a non-stable sub-screen; The proportion of the number of non-stable sub-screens in the monitoring screen during the detection period is obtained and marked as the non-stable screen proportion value. If the non-stable screen proportion value exceeds the preset non-stable screen proportion threshold, an obvious unstable signal is generated; if the non-stable screen proportion value does not exceed the preset non-stable screen proportion threshold, the coordination stability evaluation value is obtained by weighted summing the coordination impact detection value, the coordination impact difference value and the coordination impact amplitude value. If the coordination stability evaluation value exceeds the preset coordination stability evaluation threshold, an obvious unstable signal is generated.

9. A video monitoring screen energy-saving display method, characterized in that: The following steps are involved: Step 1: Analyze the dynamic content of the monitoring screen in real time and generate content feature parameters; Step 2: Read the data from the temperature and humidity sensor and the light intensity sensor; Step 3: Dynamically adjust the backlight brightness and local area backlight intensity; Step 4: Make a standby judgment and automatically switch to standby mode.

10. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the video surveillance screen energy-saving display method according to claim 9 is implemented.

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