CN116939180B - Multimedia equipment state monitoring system based on Internet of things - Google Patents
Multimedia equipment state monitoring system based on Internet of things Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
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Abstract
The invention discloses a multimedia equipment state monitoring system based on the Internet of things, and particularly relates to the technical field of multimedia equipment monitoring; the relation between the change of the refresh rate and the starting time can be reflected more accurately by calculating the refresh variation ratio, potential problems can be found early in the starting process of the projector by comparing the refresh variation ratio with the refresh variation threshold value, and the stability and the reliability of the projector are improved by reasonable judgment and early warning; the projector operation early warning evaluation coefficient is calculated through normalization processing through the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index, and the first early warning judgment threshold value and the second early warning judgment threshold value are set, so that the judgment on the operation state of the projector is more comprehensive and accurate, potential problems affecting the performance of the projector are found, early warning is carried out in advance before the projector has potential faults, the accuracy of fault prediction of the projector is improved, and the stability and reliability of the projector are enhanced.
Description
Technical Field
The invention relates to the technical field of multimedia equipment monitoring, in particular to a multimedia equipment state monitoring system based on the Internet of things.
Background
Multimedia devices refer to electronic devices capable of processing and playing multiple types of media content (e.g., audio, video, images, etc.). A projector is a type of multimedia device that is capable of projecting images or video onto a screen or wall, enabling people to view the image, video content on a large screen, thus expanding the experience of visual media.
In practical use, the projector malfunction can cause a large impact; for example, during a meeting, training or presentation, projector failure may cause a delay in the meeting, impact on work efficiency and scheduling, and have a significant impact on work; however, the projector is generally discovered after a fault, and the fault cannot be early-warned, so that the normal operation of the projector is affected, and the projector can be permanently damaged.
In order to solve the above problems, a technical solution is now provided.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a multimedia device status monitoring system based on the internet of things to solve the problems set forth in the above-mentioned background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the system comprises a data processing module, an information acquisition module, a starting monitoring module and a state early warning module, wherein the information acquisition module, the starting monitoring module and the state early warning module are in signal connection with the data processing module;
the information acquisition module acquires starting process information of the projector, sends the starting process information to the data processing module, and calculates to obtain a refreshing variation ratio;
the starting monitoring module generates a starting poor signal or a continuous analysis signal according to the comparison of the refreshing variation ratio and the refreshing variation threshold value;
the information acquisition module acquires stable information of a projection process, wherein the stable information of the projection process comprises stable information of a light source and heat dissipation state information, the stable information of the light source is sent to the data processing module, and a flicker variation interval evaluation value is obtained through calculation; transmitting the heat dissipation state information to a data processing module, and calculating to obtain a heat dissipation stable deviation index;
when the monitoring module is started to generate a continuous analysis signal, the data processing module carries out normalization processing on the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index to calculate the projector operation early warning evaluation coefficient;
the state early warning module generates operation early warning signals of different grades according to comparison of the projector operation early warning evaluation coefficient with the first early warning judgment threshold value and the second early warning judgment threshold value;
the specific acquisition logic of the refresh mutation ratio is as follows: acquiring starting time, acquiring refresh rates of projector display images in the starting time, setting refresh rates of n projector display images monitored in the starting time, numbering the refresh rates of n projector display images monitored in the starting time, and calculating a starting refresh variation stability index through a data processing module, wherein the expression is as follows:wherein i and n are numbers of refresh rates of projector display images monitored together in starting timeAnd the number of co-monitored projector display image refresh rates during the start-up time, i=1, 2, 3, 4, &..the, n, i are positive integers greater than 1; qsbx, sxv i+1 、sxv i The method comprises the steps of starting a refresh variation stability index, a refresh rate of an i+1th projector display image in a starting time and a refresh rate of the i projector display image in the starting time respectively;
and calculating the ratio of the starting refresh variation stability index to the corresponding starting time, and marking the ratio of the starting refresh variation stability index to the corresponding starting time as a refresh variation ratio.
In a preferred embodiment, a refresh variation threshold is set; the start monitoring module generates a start bad signal or a continuous analysis signal according to the comparison of the refresh variation ratio and the refresh variation threshold value:
generating a projector starting process with a refresh variation ratio larger than a refresh variation threshold value and marking the projector starting process as unstable starting; marking the projector starting process with the refresh variation ratio smaller than or equal to the refresh variation threshold as stable starting;
when the projector starting process is marked as unstable starting, the starting monitoring module generates a starting poor signal; when the projector start-up procedure is marked as stable start-up, the start-up monitoring module generates a continue-analysis signal.
In a preferred embodiment, a bulb monitoring interval is set; in the bulb monitoring interval, recording the occurrence of obvious flickering of the projector bulb each time;
calculating an interval time between each scintillation event; accumulating the interval time of all flicker events in the bulb monitoring interval to obtain total interval time; monitoring the number of times that the projector bulb has a significant flicker within the bulb monitoring interval; setting a threshold value of the flicker times;
calculating a flicker variation interval evaluation value, the expression of which is:wherein sxjd, zjt, shc, shcy is respectively flicker variation interval evaluation value, total interval time, and is administered in the bulb monitoring intervalThe number of obvious flicker of the bulb of the projector and the threshold value of the flicker number, a and b are respectively +.>Is a weight of (2).
In a preferred embodiment, a heat dissipation monitoring zone is set; setting m command rotating speeds of a projector in a heat dissipation monitoring interval, acquiring an actual fan rotating speed corresponding to each command rotating speed, and calculating a heat dissipation stability deviation index according to the command rotating speeds and the actual fan rotating speeds corresponding to the command rotating speeds, wherein the expression is as follows:wherein u and m are the number of the command rotation speed in the heat radiation monitoring interval and the number of the command rotation speed in the heat radiation monitoring interval respectively, and u=1, 2, 3, 4, and the numbers of the command rotation speed in the heat radiation monitoring interval are positive integers more than 1.
swpz、sjz u 、mlz u The heat dissipation stability deviation index, the u actual fan rotating speed in the heat dissipation monitoring interval and the u command rotating speed in the heat dissipation monitoring interval are respectively set.
In a preferred embodiment, when the start-up monitoring module generates a continuous analysis signal, the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index are subjected to normalization processing of the data processing module to calculate a projector operation early warning evaluation coefficient;
setting a first early warning judgment threshold value and a second early warning judgment threshold value, wherein the first early warning judgment threshold value is smaller than the second early warning judgment threshold value;
when the projector operation early warning evaluation coefficient is smaller than the first early warning judgment threshold value, the state early warning module generates a primary operation early warning signal; when the projector operation early warning evaluation coefficient is larger than or equal to the first early warning judgment threshold value and smaller than or equal to the second early warning judgment threshold value, the state early warning module generates a secondary operation early warning signal; and when the projector operation early warning evaluation coefficient is larger than the second early warning judgment threshold value, the state early warning module generates a three-stage operation early warning signal.
The invention discloses a multimedia equipment state monitoring system based on the Internet of things, which has the technical effects and advantages that:
1. the refresh variation ratio can more accurately reflect the relation between the refresh rate variation and the starting time, thereby assisting in judging the state of the projector, dividing the starting process of the projector into stable starting and unstable starting through the comparison of the refresh variation ratio and the refresh variation threshold value, helping to discover potential problems early in the starting process of the projector, optimizing the performance of the projector through reasonable judgment and early warning, and improving the stability and reliability of the projector.
2. The projector operation early warning evaluation coefficient is calculated through normalization processing through the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index, and the first early warning judgment threshold value and the second early warning judgment threshold value are set, so that quantitative analysis is facilitated, the judgment on the operation state of the projector is more comprehensive and accurate, potential problems affecting the performance of the projector are found, early warning is performed in advance before the projector has potential faults, unnecessary downtime and maintenance cost are reduced, the accuracy of fault prediction of the projector is improved, and the stability and reliability of the projector are enhanced.
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Fig. 1 is a schematic structural diagram of a multimedia device status monitoring system based on the internet of things.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Fig. 1 shows a schematic structural diagram of a multimedia device state monitoring system based on the internet of things, which comprises a data processing module, an information acquisition module, a start monitoring module and a state early warning module, wherein the information acquisition module, the start monitoring module and the state early warning module are in signal connection with the data processing module.
The information acquisition module acquires starting process information of the projector, sends the starting process information to the data processing module, and calculates to obtain the refreshing variation ratio.
The start-up monitoring module generates a start-up bad signal or a continue analysis signal based on a comparison of the refresh variation ratio and the refresh variation threshold.
The information acquisition module acquires stable information of a projection process, wherein the stable information of the projection process comprises stable information of a light source and heat dissipation state information, the stable information of the light source is sent to the data processing module, and a flicker variation interval evaluation value is obtained through calculation; and sending the heat dissipation state information to a data processing module, and calculating to obtain a heat dissipation stability deviation index.
When the monitoring module is started to generate a continuous analysis signal, the data processing module carries out normalization processing on the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index to calculate the projector operation early warning evaluation coefficient.
And the state early warning module generates operation early warning signals of different grades according to comparison of the projector operation early warning evaluation coefficient with the first early warning judgment threshold value and the second early warning judgment threshold value.
And the information acquisition module is used for: the data such as the starting process information and the projection process stability information of the projector are acquired through the equipment such as the connection sensor and the detector, the equipment such as the connection sensor and the detector can be connected with the system through the internet of things technology, and the acquired data is transmitted to the data processing module through the network.
Starting a monitoring module: the start-up monitoring module needs to acquire data in the start-up process, possibly needs to be connected to a control module or a sensor of the projector, and transmits the data through the internet of things technology.
And a data processing module: the data processing module can be connected to each data source through the Internet of things technology to acquire real-time data and process the real-time data.
A state early warning module: this module depends on the data calculated by the data processing module.
The information acquisition module, the starting monitoring module, the data processing module and the state early warning module are used for transmitting and exchanging data through the internet of things technology, so that monitoring and early warning of the projector are realized. The internet of things technology enables each module to acquire, transmit and process data in real time, so that the system can run more intelligently and efficiently, and faults or abnormal conditions of the projector can be found early.
The information acquisition module acquires information of the starting process of the projector, monitors the starting process of the projector, can detect potential faults or problems early, helps to identify the health condition of the projector, predicts the service life of a bulb, the abrasion of mechanical parts and the like, can avoid further damage of equipment, reduces maintenance cost, and can be used for analyzing the performance change trend of the projector, optimizing the starting process and improving the stability and reliability of the projector.
The change in the refresh rate at which the projector displays images during the start-up is monitored may mean that there is a problem with the device, such as abnormality in the display control circuit, signal source problem, etc., if a significant abnormal change in the refresh rate occurs during the start-up of the projector, and therefore, when the start-up of the projector is monitored, although the change in the refresh rate is small, it is worth noting whether the refresh rate is normal or not, so that a potential problem can be found early and necessary maintenance measures can be taken.
Acquiring starting time, acquiring refresh rates of projector display images in the starting time, setting refresh rates of n projector display images monitored in the starting time, numbering the refresh rates of the n projector display images monitored in the starting time, analyzing fluctuation conditions of the refresh rates of the projector display images in the starting time, and calculating a starting refresh variation stability index through a data processing module, wherein the expression is as follows:wherein i is,n is the number of the refresh rate of the projector display images co-monitored during the start-up time and the number of the refresh rate of the projector display images co-monitored during the start-up time, i=1, 2, 3, 4, and n, i are positive integers greater than 1, respectively; qsbx, sxv i+1 、sxv i The refresh variation stability index is started, the refresh rate of the i+1th projector display image in the starting time and the refresh rate of the i projector display image in the starting time are respectively set.
The larger the refresh variation stability index is started, the larger the refresh rate fluctuation of the image displayed by the projector in the starting process of the projector is, which may cause abnormal display phenomena such as shaking, flickering, incoherence and the like of the image, influence the viewing experience, have problems on hardware components (such as power supply, an image processor and the like) of the projector, influence the normal starting and running of the projector, and also may mean that the overall stability of the projector is lower, which may influence the long-term reliability and the continuous working stability of the projector; the larger start-up refresh variation stability index suggests that the projector may have faults during the start-up process, such as unstable power supply, sensor faults, circuit connection problems, and the like.
The start-up time refers to the time elapsed from the start of a start-up operation (e.g., the pressing of a power button) by the projector until the projector is fully started up, displays a screen, and can normally project.
Since the possible difference of the starting time of each projector is considered, in order to evaluate the starting state of the projector more accurately, the ratio of the starting refresh variation stability index to the corresponding starting time is calculated, and the ratio of the starting refresh variation stability index to the corresponding starting time is marked as a refresh variation ratio.
The refresh variation threshold is set by a person skilled in the art according to the magnitude of the refresh variation ratio and other actual situations such as a requirement standard for actually changing the refresh rate of the projector display image in the starting process of the projector.
The starting monitoring module generates a starting bad signal or a continuous analysis signal according to the comparison of the refresh variation ratio and the refresh variation threshold value, specifically:
generating a projector starting process with a refresh variation ratio larger than a refresh variation threshold value and marking the projector starting process as unstable starting; and marking the projector starting process with the refresh variation ratio smaller than or equal to the refresh variation threshold as stable starting.
When the projector start-up procedure is marked as an unstable start, the start-up monitoring module generates a start-up poor signal, and a professional technician is scheduled to service the projector according to the generated start-up poor signal.
When the projector starting process is marked as stable starting, the starting monitoring module generates a continuous analysis signal, and the projector starting process is not represented, so that the state of the projector needs to be early warned by combining other factors.
And calculating the ratio of the refresh rate variation stability index to the corresponding starting time, namely the refresh variation ratio. The refresh variation ratio can more accurately reflect the relation between the refresh rate variation and the starting time, thereby assisting in judging the state of the projector, dividing the starting process of the projector into stable starting and unstable starting through the comparison of the refresh variation ratio and the refresh variation threshold value, helping to discover potential problems early in the starting process of the projector, reducing maintenance cost, optimizing the performance of the projector and improving the stability and reliability of the projector through reasonable judgment and early warning.
The information acquisition module acquires the stable information of the projection process, potential problems and abnormal conditions can be found early by monitoring and analyzing the stable data of the projection process, the abnormal conditions can be captured before the faults occur, measures can be taken before the problems become serious, work interruption caused by the faults is avoided or user experience is influenced, if the faults can be early warned before the faults occur, measures can be taken before the projector thoroughly fails, and the reduction of the downtime of the projector is facilitated, and production interruption caused by fault maintenance is avoided.
The projection process stability information is embodied by the light source stability information and the heat dissipation state information.
Wherein for light source stabilization information, in most cases a slight flickering of the projector bulb may be normal, however, if the projector bulb flickering abnormality is obvious, frequent or continuous, further inspection and maintenance may be required, the projector bulb flickering abnormality may be an abnormal situation caused by a problem of the bulb itself or other factors: near the end of life, the bulb may become unstable in brightness, causing flickering; aging or damage to the bulb may cause flickering; an unstable power input may cause the bulb to flicker, such as voltage fluctuations, etc.; unstable signal connections may also cause image flicker, and flicker anomalies in the projector bulb may be indicative of projector failure.
The method comprises the steps of setting a bulb monitoring interval, wherein the time length of the bulb monitoring interval is set according to actual conditions, the time length corresponding to the bulb monitoring interval is unchanged and changes along with real-time change, namely, one critical point of the bulb monitoring interval is real-time.
During the bulb monitoring interval, each time a significant flicker of the projector bulb occurs, including the point in time when the flicker begins, the point in time when the flicker ends, and the duration of time are recorded.
The interval time between each scintillation event, i.e. the start time of the next scintillation event minus the end time of the last scintillation event, is calculated. And accumulating the interval time of all the flicker events in the bulb monitoring interval to obtain the total interval time. If the interval between each flicker event is small and the total interval is small within the bulb monitoring interval, this means that the flicker events of the projector bulb may be relatively frequent and concentrated. The smaller the total interval time, the shorter the interval between scintillation events, which may be closely connected. A smaller total interval time means that flicker events are relatively frequent, possibly resulting in a higher usage of the projector bulb. Continuous use over a long period of time may accelerate the aging of the bulb, thereby leading to bulb problems in advance. Frequent flicker events may create additional loads on other components of the projector, which may increase the risk of failure of the other components. High frequency flicker events may result in higher energy consumption and maintenance costs, as the life of the bulb may be shortened, requiring more frequent replacement. Frequent blinking may affect the user viewing experience, especially in situations where stable projection is required, such as meetings or presentations.
The number of times that the projector lamp is obviously flashed in the lamp monitoring interval is monitored, and the higher the number of times that the projector lamp is obviously flashed in the lamp monitoring interval is, some problems or abnormal conditions may exist in the projector lamp, and obvious flashing phenomena may be related to various factors, such as lamp aging, power supply problems, thermal problems and the like.
The threshold of the number of flicker is set by a person skilled in the art according to the size of the monitoring interval of the bulb and other practical situations such as the safety standard of the flicker of the projector bulb in practice, and will not be described here again.
Calculating a flicker variation interval evaluation value, the expression of which is:wherein sxjd, zjt, shc, shcy is the flicker variation interval evaluation value, the total interval time, the number of times of obvious flicker of the projector bulb in the bulb monitoring interval and the flicker number threshold, a and b are +.>A, b are fixed values, the magnitude of a, b is determined by the person skilled in the art as a function of the actual +.>The size of (2) and other practical situations are set and will not be described in detail here.
When the flicker variation interval evaluation value is larger, the interval between flicker events is relatively smaller, the flicker phenomenon is not stable enough, the number of times of obvious flicker of the projector bulb occurs in the bulb monitoring interval is more, the projector bulb has larger instability, the projector bulb is related to bulb aging, power supply problems, heat problems and the like, and the larger flicker variation interval evaluation value may suggest frequent flicker phenomenon of the projector bulb, which causes user experience problems and influences the quality of the watching content. This may also indicate a bulb life problem for the projector, requiring early maintenance or replacement. Bulb instability can create additional loads on other components, further increasing the potential for failure of other components of the projector.
It is noted that the basis for the occurrence of the distinct flicker is: the actual brightness change value is set according to the actual brightness change value of the flicker, and the specific brightness change value is set by a person skilled in the art according to other actual conditions such as the safety standard of the brightness change of the projector bulb, and will not be described here again.
For the heat dissipation state information, the operation state of the heat dissipation fan is used for reflecting, the operation state of the heat dissipation fan is used for acquiring the heat dissipation state information, the projector fault can be early warned in advance, the heat dissipation fan plays a role in heat dissipation and temperature reduction in the projector, and if the heat dissipation fan stops running or abnormal running (such as abnormal high or low rotating speed) occurs, the temperature inside the projector can be possibly increased. Excessive temperatures may damage internal components of the projector, resulting in reduced performance or failure, and therefore monitoring the operating state of the fan may early alert the fan to failure to ensure proper operation of the projector. By monitoring the running state of the cooling fan, the rotating speed change trend of the cooling fan can be analyzed. If the operating state of the fan is gradually deteriorated, it may be predicted that the problem of the heat dissipation system is gradually aggravated. Such trend analysis may be used to predict possible fault conditions, helping to take action in advance, preventing serious projector failure, and reducing the impact of projector failure.
The method comprises the steps of setting a heat dissipation monitoring section, wherein the time length of the heat dissipation monitoring section is set according to actual conditions, the time length corresponding to the heat dissipation monitoring section is unchanged and changes along with real-time change, namely, one critical point of the heat dissipation monitoring section is real-time.
Setting m command rotating speeds of a projector in a heat dissipation monitoring interval, acquiring the actual fan rotating speed corresponding to each command rotating speed, and according to the command rotating speed and the command rotating speedThe actual fan rotating speed is used for calculating a heat dissipation stability deviation index, and the expression is as follows:wherein u and m are the number of the command rotation speed in the heat radiation monitoring interval and the number of the command rotation speed in the heat radiation monitoring interval respectively, and u=1, 2, 3, 4, and the numbers of the command rotation speed in the heat radiation monitoring interval are positive integers more than 1. swpz, sjz u 、mlz u The heat dissipation stability deviation index, the u actual fan rotating speed in the heat dissipation monitoring interval and the u command rotating speed in the heat dissipation monitoring interval are respectively set.
The larger the heat dissipation stability deviation index is, the larger the deviation between the actual fan rotating speed and the command rotating speed is, the lower the stability of a heat dissipation system of the projector is, the fan cannot operate at an expected speed, the temperature inside the projector can be increased, the heat dissipation effect is affected, the risk of the projector to malfunction is increased, the lower stability of the heat dissipation system can cause overheat problems, the normal operation of the projector is affected, the electronic elements, bulbs and other parts of the projector can be damaged by long-time overheat, the malfunction is further caused, and if the rotating speed of the fan is unstable, the projector can frequently experience temperature change in the working time, so that the long-term reliability of the projector is reduced.
It is noted that the command rotation speed is a rotation speed of the projector set according to actual power consumption, operation mode and other actual operation conditions of the projector.
Since the commanded rotational speed generally corresponds to a period of time, the actual fan rotational speed is an average of the actual fan rotational speeds over the period of time.
Notably, the projection process stability information does not include monitoring of the projector activation process.
And comprehensively analyzing the starting process information and the projection process stability information, and judging the running state of the projector, so that fault early warning is carried out on the projector in advance.
When the monitoring module is started to generate a continuous analysis signal, the refresh variation ratio and the flicker variation interval are evaluatedAnd calculating the projector operation early warning evaluation coefficient through the normalization processing of the data processing module by the estimated value and the heat dissipation stable deviation index. For example, the invention can calculate the projector operation early warning evaluation coefficient by adopting the following formula:the Tyyx and sxby are projector operation early warning evaluation coefficients and refresh variation ratios; alpha 1 、α 2 、α 3 Predetermined ratio coefficients of refresh variation ratio, flicker variation interval evaluation value and heat dissipation stability deviation index, alpha 1 、α 2 、α 3 Are all greater than 0.
The greater the projector operation warning evaluation coefficient, the greater the probability that the projector has failed or is failed while operating.
Setting a first early warning judgment threshold value and a second early warning judgment threshold value, wherein the first early warning judgment threshold value is smaller than the second early warning judgment threshold value; the first early warning judgment threshold and the second early warning judgment threshold are set by a person skilled in the art according to the magnitude of the projector operation early warning evaluation coefficient and actual conditions such as operation safety requirement standard of the projector in the technical field of the art, and are not described herein.
The state early warning module compares the projector operation early warning evaluation coefficient with the first early warning judgment threshold value and the second early warning judgment threshold value to generate operation early warning signals with different grades, so that different measures are taken to process the projector.
When the projector operation early warning evaluation coefficient is smaller than the first early warning judgment threshold value, the state early warning module generates a primary operation early warning signal.
When the projector operation early warning evaluation coefficient is larger than or equal to the first early warning judgment threshold value and smaller than or equal to the second early warning judgment threshold value, the state early warning module generates a secondary operation early warning signal.
And when the projector operation early warning evaluation coefficient is larger than the second early warning judgment threshold value, the state early warning module generates a three-stage operation early warning signal.
When the state early warning module generates a first-level operation early warning signal, the projector is in a relatively good operation state and is in normal operation; no measures need to be taken.
When the state early warning module generates a secondary operation early warning signal, this indicates that the projector operation state may have some degree of instability or deviation, but has not yet reached a serious fault state. According to the secondary operation early warning signal generated by the state early warning module, the real-time monitoring of the projector is enhanced, and the state change of the projector is tracked so as to know whether a further unstable condition occurs; after the end of this projection, an inspection is performed: basic checks of the projector, such as cleaning fans, checking connections, etc., are performed to eliminate simple problems that may affect stability.
When the state early-warning module generates a three-level operation early-warning signal, the projector operation state may be unstable or have serious deviation, and the risk of failure or occurrence of failure is high; at this time, the projector is immediately stopped and maintained and overhauled to prevent further damage, and maintenance personnel are notified to carry out emergency treatment on the projector.
The projector operation early warning evaluation coefficient is calculated through normalization processing through the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index, and the first early warning judgment threshold value and the second early warning judgment threshold value are set, so that quantitative analysis is facilitated, the judgment on the operation state of the projector is more comprehensive and accurate, potential problems affecting the performance of the projector are found, early warning is performed in advance before the projector has potential faults, unnecessary downtime and maintenance cost are reduced, the accuracy of fault prediction of the projector is improved, and the stability and reliability of the projector are enhanced.
The above formulas are all formulas with dimensionality removed and numerical calculation, the formulas are formulas with the latest real situation obtained by software simulation through collecting a large amount of data, and preset parameters and threshold selection in the formulas are set by those skilled in the art according to the actual situation.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. A multimedia device state monitoring system based on the Internet of things is characterized in that: the system comprises a data processing module, an information acquisition module, a starting monitoring module and a state early warning module, wherein the information acquisition module, the starting monitoring module and the state early warning module are in signal connection with the data processing module;
the information acquisition module acquires starting process information of the projector, sends the starting process information to the data processing module, and calculates to obtain a refreshing variation ratio;
the starting monitoring module generates a starting poor signal or a continuous analysis signal according to the comparison of the refreshing variation ratio and the refreshing variation threshold value;
the information acquisition module acquires stable information of a projection process, wherein the stable information of the projection process comprises stable information of a light source and heat dissipation state information, the stable information of the light source is sent to the data processing module, and a flicker variation interval evaluation value is obtained through calculation; transmitting the heat dissipation state information to a data processing module, and calculating to obtain a heat dissipation stable deviation index;
when the monitoring module is started to generate a continuous analysis signal, the data processing module carries out normalization processing on the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index to calculate the projector operation early warning evaluation coefficient;
the state early warning module generates operation early warning signals of different grades according to comparison of the projector operation early warning evaluation coefficient with the first early warning judgment threshold value and the second early warning judgment threshold value;
the information acquisition module, the starting monitoring module, the data processing module and the state early warning module are used for transmitting and exchanging data through the Internet of things technology;
the specific acquisition logic of the refresh mutation ratio is as follows: acquiring starting time, acquiring refresh rates of projector display images in the starting time, setting refresh rates of n projector display images monitored in the starting time, numbering the refresh rates of n projector display images monitored in the starting time, and calculating a starting refresh variation stability index through a data processing module, wherein the expression is as follows:wherein i, n are the number of the refresh rate of the projector display image co-monitored during the start-up time and the number of the refresh rate of the projector display image co-monitored during the start-up time, i=1, 2, 3, 4, and n, i are positive integers greater than 1, respectively; qsbx, sxv i+1 、sxv i The method comprises the steps of starting a refresh variation stability index, a refresh rate of an i+1th projector display image in a starting time and a refresh rate of the i projector display image in the starting time respectively;
and calculating the ratio of the starting refresh variation stability index to the corresponding starting time, and marking the ratio of the starting refresh variation stability index to the corresponding starting time as a refresh variation ratio.
2. The system for monitoring the state of a multimedia device based on the internet of things according to claim 1, wherein: setting a refreshing variation threshold; the start monitoring module generates a start bad signal or a continuous analysis signal according to the comparison of the refresh variation ratio and the refresh variation threshold value:
generating a projector starting process with a refresh variation ratio larger than a refresh variation threshold value and marking the projector starting process as unstable starting; marking the projector starting process with the refresh variation ratio smaller than or equal to the refresh variation threshold as stable starting;
when the projector starting process is marked as unstable starting, the starting monitoring module generates a starting poor signal; when the projector start-up procedure is marked as stable start-up, the start-up monitoring module generates a continue-analysis signal.
3. The system for monitoring the state of a multimedia device based on the internet of things according to claim 1, wherein: setting a bulb monitoring interval; in the bulb monitoring interval, recording the occurrence of obvious flickering of the projector bulb each time;
calculating an interval time between each scintillation event; accumulating the interval time of all flicker events in the bulb monitoring interval to obtain total interval time; monitoring the number of times that the projector bulb has a significant flicker within the bulb monitoring interval; setting a threshold value of the flicker times;
calculating a flicker variation interval evaluation value, the expression of which is:wherein sxjd, zjt, shc, shcy is the flicker variation interval evaluation value, the total interval time, the number of times of obvious flicker of the projector bulb in the bulb monitoring interval and the flicker number threshold, a and b are +.>Is a weight of (2).
4. The system for monitoring the state of a multimedia device based on the internet of things according to claim 1, wherein: setting a heat dissipation monitoring interval; setting m command rotating speeds of a projector in a heat dissipation monitoring interval, acquiring an actual fan rotating speed corresponding to each command rotating speed, and calculating a heat dissipation stability deviation index according to the command rotating speeds and the actual fan rotating speeds corresponding to the command rotating speeds, wherein the expression is as follows:wherein u and m are the number of the command rotation speed in the heat dissipation monitoring zone and the number of the command rotation speed in the heat dissipation monitoring zone respectivelyThe number of inter-commanded rotational speeds, u=1, 2, 3, 4, &.. u and m are positive integers greater than 1; swpz, sjz u 、mlz u The heat dissipation stability deviation index, the u actual fan rotating speed in the heat dissipation monitoring interval and the u command rotating speed in the heat dissipation monitoring interval are respectively set.
5. The system for monitoring the state of a multimedia device based on the internet of things according to claim 1, wherein: when the monitoring module is started to generate a continuous analysis signal, calculating the projector operation early warning evaluation coefficient through the normalization processing of the data processing module by using the refresh variation ratio, the flicker variation interval evaluation value and the heat dissipation stability deviation index;
setting a first early warning judgment threshold value and a second early warning judgment threshold value, wherein the first early warning judgment threshold value is smaller than the second early warning judgment threshold value;
when the projector operation early warning evaluation coefficient is smaller than the first early warning judgment threshold value, the state early warning module generates a primary operation early warning signal; when the projector operation early warning evaluation coefficient is larger than or equal to the first early warning judgment threshold value and smaller than or equal to the second early warning judgment threshold value, the state early warning module generates a secondary operation early warning signal; and when the projector operation early warning evaluation coefficient is larger than the second early warning judgment threshold value, the state early warning module generates a three-stage operation early warning signal.
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