CN117253448B - LED display screen correction method and system - Google Patents
LED display screen correction method and system Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2320/0693—Calibration of display systems
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Abstract
The invention relates to a correction method and a correction system for an LED display screen, wherein the method comprises the steps of assigning an initial weight value n0 to the power pi of the LED display screen in advance and assigning an initial weight value v0 to the temperature ti of the LED display screen, so that a predicted temperature value tf on the back of the LED display screen can be calculated in a weighting mode according to the power pi of the LED display screen, the weight value assigned to the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value assigned to the temperature ti of the LED display screen; after the LED display screen is powered on, a detection period L is preset, after the detection period L is completed, a weight value distributed by the power pi of the latest LED display screen and a weight value distributed by the temperature ti of the LED display screen are obtained, and a temperature value of the back surface of the LED display screen, which needs to be predicted at a future time point, is calculated in a weighting mode; and then predicting the front temperature according to the predicted temperature value of the back of the LED display screen, thereby determining the correction coefficient.
Description
Technical Field
The invention belongs to the field of LED control, and particularly relates to a method and a system for correcting an LED display screen.
Background
The existing led display screen can cause local color problems due to the temperature of the display screen, and the display effect of the display screen is affected. Therefore, in the prior art, the front temperature of the display screen is generally required to be measured, and then the correction coefficient is determined according to the temperature characteristics of the display screen to correct the display screen. However, in the related art, it is generally impossible to provide a temperature sensor on the front surface of the display screen for various reasons such as usability of the display screen. There is no method of directly measuring the front temperature of the display screen, and for this purpose, the prior art generally determines the correction coefficient by providing a temperature sensor on the back of the display screen, then predicting the front temperature of the display screen according to a previously established mapping relationship between the front temperature and the back temperature of the display screen, that is, measuring the temperature of the back of the display screen in real time, and then predicting the front temperature using the mapping relationship. In practice, however, the temperature of the display screen is affected by many factors, and in general, a user wants to predict the temperature in advance, so as to control and adjust the correction coefficient in advance. In fact, the front temperature is often predicted by the back temperature in the prior art, and it is impossible to predict the front temperature in advance, because the back temperature of the display screen is generally caused by the front temperature. That is, the front temperature of the display screen is the cause and the back temperature is the result. That is, the prior art cannot predict the change of the front temperature of the display screen through the back temperature, so that the front temperature of the display screen cannot be determined in advance, and the correction coefficient cannot be determined through the thermal effect of the display screen.
Disclosure of Invention
The invention aims to provide a method and a system for correcting an LED display screen, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the LED display screen correction method comprises the following steps:
Detecting the power pi of the LED display screen in real time through a power detection circuit of the LED display screen, setting a temperature sensor on the back surface of the display screen, detecting the temperature ti of the LED display screen in real time through the temperature sensor, pre-distributing an initial weight value n0 to the power pi of the LED display screen and distributing an initial weight value v0 to the temperature ti of the LED display screen, so that a predicted temperature tf of the back surface of the LED display screen can be calculated by weighting together according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen;
After the LED display screen is powered on, a detection period L is preset, the detection period L is divided into a plurality of training short periods L, and in the initial training short period L, the power pi of the current LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen are obtained to calculate the temperature value of the back of the LED display screen predicted by the next training short period L in a weighting mode;
In a non-initial training short period l, firstly acquiring a temperature value of the back surface of the LED display screen predicted by the last training short period l, and then acquiring the power pi of the current LED display screen, a weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and a weight value distributed by the temperature ti of the LED display screen;
Then, according to the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the previous training short period l, the weight value distributed by the power pi of the current LED display screen and the weight value distributed by the temperature ti of the LED display screen are adjusted, and then the temperature value of the back surface of the LED display screen predicted by the next training short period l is calculated according to the weight value distributed by the power pi of the newly adjusted LED display screen and the weight value distributed by the temperature ti of the LED display screen and the power pi of the current LED display screen and the temperature ti of the LED display screen in a weighting mode; then after the detection period L is completed, acquiring the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen, and calculating the temperature value of the back surface of the LED display screen to be predicted at a future time point according to the weight value distributed by the power pi of the latest LED display screen, the temperature ti of the LED display screen, the power pi of the current LED display screen and the temperature ti of the LED display screen; and then predicting the front temperature according to the predicted temperature value of the back of the LED display screen, thereby determining the correction coefficient.
Further, the detection period was 10 minutes.
Further, according to the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period l, the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen are adjusted, specifically, if the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period l is 0, the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen are kept unchanged, and if the temperature ti value of the current LED display screen is larger than the temperature value of the back surface of the LED display screen predicted by the last training short period l, the weight value allocated to the power pi of the LED display screen is reduced, and the weight value allocated to the LED display screen is increased.
Further, if a deviation exists between the temperature ti of the current LED display screen of the last training short period and the temperature value of the back surface of the LED display screen predicted by the last training short period L for the current training short period L, and the deviation is larger than a threshold value, the detection period L is prolonged.
The LED display screen correction system comprises a temperature sensor arranged on the back surface of a display screen and used for detecting the temperature ti of the LED display screen in real time, a power detection circuit and an upper computer, wherein the power detection circuit is used for detecting the power pi of the LED display screen in real time, the upper computer is used for calculating a predicted temperature tf on the back surface of the LED display screen in a weighting mode according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen, and the specific upper computer is used for controlling the detection period, and is also used for obtaining the latest weight value distributed by the power pi of the LED display screen and the weight value distributed by the power pi of the LED display screen and calculating the temperature value on the back surface of the LED display screen to be predicted at a future time point according to the latest weight value distributed by the power pi of the LED display screen and the temperature ti of the LED display screen; the correction coefficient is also used for predicting the front temperature according to the predicted temperature value of the back of the LED display screen so as to determine the correction coefficient, and the correction coefficient is also used for instructing the completion of correction of the LED display screen.
Further, a computer device includes a terminal device or a server, and the upper computer is configured in the computer device.
Furthermore, the computer equipment adopts a pc machine, and the temperature sensor and the power detection circuit are electrically connected with the computer equipment through USB.
The beneficial effects are that: according to the application, power is introduced into the prediction of the future temperature as an important variable, because the power is large and is the cause of heating of the display screen, namely the cause is earlier, the prediction of the future temperature can be more accurate by introducing the power, the prediction temperature can be determined by weighting two factors on the basis of the existing temperature condition and the power change, the weight value can be dynamically determined instead of being fixed in advance, and the accurate prediction of the back and front temperatures can be realized by combining the actual conditions, so that the accurate determination and adjustment of the correction coefficient can be realized.
Drawings
FIG. 1 is a flow chart of a method for calibrating an LED display screen according to the present application.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, 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.
The application discloses a correction method of an LED display screen, referring to figure 1, comprising the steps of detecting the power pi of the LED display screen in real time through a power detection circuit of the LED display screen, setting a temperature sensor on the back of the display screen, detecting the temperature ti of the LED display screen in real time through the temperature sensor, pre-distributing an initial weight value n0 to the power pi of the LED display screen and distributing an initial weight value v0 to the temperature ti of the LED display screen, wherein the initial weight value n0 is 0.1, the temperature ti of the LED display screen distributes an initial weight value v0 to be 0.9, the sum of the two weight values is always not equal to 1, so that the sum of the two weight values is not required to be equal to 1, and in practice, for example, the power of the LED display screen with a small model is about 70W, the temperature of the back is generally about 30 ℃ after the LED display screen is electrified, in this case, the initial weight n0 of the power pi of the LED display screen is 0.05, the initial weight v0 of the temperature ti of the LED display screen is 0.9, for example, the power of the large-sized LED display screen is about 250W, the temperature of the back surface of the LED display screen after the LED display screen is powered up is about 30 ℃, in this case, the initial weight n0 of the power pi of the LED display screen is 0.012, the initial weight v0 of the temperature ti of the LED display screen is 0.9, so that in practice, the initial values of the two weight values can be set according to experience and the specific model of the LED display screen, even if some errors exist, because the errors can be corrected in the later training, the power pi of the LED display screen, the weight value of the power pi of the LED display screen, the temperature ti of the LED display screen, the power pi of the LED display screen, the LED display screen and the LED display screen, the temperature tf of the back surface of the LED display screen is calculated by weighting the weight value distributed by the temperature ti of the LED display screen together;
After the LED display screen is powered on, a detection period L is preset, for example, the detection period is 10 minutes, the detection period L is divided into a plurality of training short periods L, for example, 30 seconds or one minute, and the power pi of the current LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen are obtained in the initial training short period L to calculate the temperature value of the back of the LED display screen predicted by the next training short period L in a weighting mode;
In a non-initial training short period l, firstly acquiring a temperature value of the back surface of the LED display screen predicted by the last training short period l, and then acquiring the power pi of the current LED display screen, a weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and a weight value distributed by the temperature ti of the LED display screen;
Then, according to the deviation of the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period l, the weight value of the power pi of the current LED display screen and the weight value of the temperature ti of the LED display screen are adjusted, specifically, if the deviation of the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period l is 0, the weight value of the current LED display screen and the weight value of the temperature pi of the LED display screen are kept unchanged, if the temperature ti of the current LED display screen is greater than the temperature ti of the LED display screen predicted by the last training short period l, the weight value of the LED display screen is increased, and the weight value of the LED display screen is increased by a weight value of the LED display screen in a proportion of increasing value of the LED display screen, if the weight value of the LED display screen is increased, and the weight value of the LED display screen is increased by a weight value of the LED display screen is increased, and the weight value of the LED display panel is increased by a weight value of the weight value of which is increased; if the temperature ti value of the current LED display screen is smaller than the temperature value of the back of the LED display screen predicted by the previous training short period l, increasing the weight value distributed by the power pi of the LED display screen and reducing the weight value distributed by the temperature ti of the LED display screen, increasing or reducing a proportion value, such as 2%, on the base of each weight value in the process of increasing the weight value distributed by the power pi of the LED display screen and the weight value distributed by the temperature ti of the LED display screen according to the newly adjusted power pi of the LED display screen and the temperature pi of the current LED display screen, and calculating the temperature value of the back of the LED display screen predicted by the next training short period l by weighting the power pi of the current LED display screen and the temperature ti of the LED display screen; in a further preferred implementation, if there is a deviation between the temperature ti of the current LED display screen of the last training short period and the temperature value of the back surface of the LED display screen predicted by the last training short period L for the present training short period L, and the deviation is greater than the threshold value, the detection period L is prolonged, for example, the detection period L is prolonged to be twice as long as the original period; then after the detection period L is completed, acquiring the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen, and calculating the temperature value of the back surface of the LED display screen to be predicted at a future time point according to the weight value distributed by the power pi of the latest LED display screen, the temperature ti of the LED display screen, the power pi of the current LED display screen and the temperature ti of the LED display screen; and then predicting the front temperature according to the predicted temperature value of the back of the LED display screen, thereby determining the correction coefficient. The front temperature is predicted according to the predicted temperature value of the back surface of the LED display screen, so that correction coefficients are determined to be not described in detail in the prior art, for example, the method for calculating the correction coefficients by the LED display screen according to the temperature can be realized by the following steps:
1. Temperature data is obtained. 2. Establishing a relation between temperature and brightness: a set of data for temperature and corresponding brightness is obtained experimentally or empirically. The data may be measured in advance, or may be estimated according to the characteristics and optical model of the LED display screen, for example, the following are data of example temperatures and corresponding brightnesses, which are only used as references, and actual data may be different depending on factors such as the model of the LED display screen, manufacturer and use environment: a temperature of 25 degrees celsius and a brightness of 1000 candela (cd); a temperature of 50 degrees celsius and a brightness of 900 candela (cd); a temperature of 75 degrees celsius and a brightness of 800 candela (cd); the temperature is 100 ℃ and the brightness is 700 candela (cd); the temperature was 125 degrees celsius and the brightness was 600 candela (cd). These data can be used to calculate the brightness correction coefficients of the LED display screen at different temperatures. 3. Fitting a curve: and fitting the obtained temperature and brightness data to find a best fit curve. Common fitting methods include linear fitting, polynomial fitting, exponential fitting, and the like. 4. Calculating correction coefficients: the correction coefficients are calculated using a fitted curve. For a given temperature value, the corresponding luminance value is found by interpolation or by way of the closest point on the curve. And then comparing the actually measured brightness value with the calculated brightness value to obtain the correction coefficient. 5. Applying correction coefficients: and correcting the brightness of the LED display screen according to the calculated correction coefficient. The measured brightness value is adjusted to an accurate value by multiplying the correction coefficient. It should be noted that the data acquisition, fitting and calculation in the above steps may be implemented by software or hardware. In the specific implementation, the factors such as the position, sampling frequency, error correction and the like of the temperature sensor are also required to be considered so as to ensure the accuracy and stability of the correction coefficient.
The application introduces power as an important variable in the prediction of future temperature, because the power is a cause of heating of a display screen, namely an earlier cause, the prediction of the future temperature can be more accurate by introducing the power, the predicted temperature can be determined by weighting two factors on the basis of the existing temperature condition and the power change, the weight value can be dynamically determined instead of being fixed in advance, and the accurate prediction of the back and front temperatures can be realized by combining the actual conditions, so that the accurate determination and adjustment of the correction coefficient can be realized.
The evaluation parameters of the correction effect of the LED display screen mainly comprise the following points: 1. brightness and viewing angle: the brightness of the indoor full-color screen is completely above 800cd/m, the brightness of the outdoor full-color screen is completely above 1500cd/m, and the actual measurement is higher than that of the existing product. The size of the visual angle directly determines the number of the audience of the display screen, so that the larger the size is, the better the size is. 2. White balance effect: coloristically, pure white is displayed when the ratio of the red, green and blue primary colors is 1:4.6:0.16. 3. Color reducibility: the LED display screen should be able to accurately restore the colors of images and video, avoiding color distortion or deviation. 4. Flatness: the surface flatness of the display screen is required to be within +/-1 mm so as to ensure the definition and visual effect of the image. 5. No mosaic and dead point phenomenon: the LED display should have no mosaic and dead spots to ensure the integrity and definition of the image. 6. Colorless block: the LED display should have no obvious color patches to ensure uniformity and visual effect of the image. These evaluation parameters can help evaluate the corrective effect of the LED display screen, ensuring that it can provide high quality image and video presentation. The application performs better than the prior art in the above parametric tests.
Embodiments of the application that require protection include:
The LED display screen correction method, as shown in figure 1, comprises the following steps:
Detecting the power pi of the LED display screen in real time through a power detection circuit of the LED display screen, setting a temperature sensor on the back surface of the display screen, detecting the temperature ti of the LED display screen in real time through the temperature sensor, pre-distributing an initial weight value n0 to the power pi of the LED display screen and distributing an initial weight value v0 to the temperature ti of the LED display screen, so that a predicted temperature tf of the back surface of the LED display screen can be calculated by weighting together according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen;
After the LED display screen is powered on, a detection period L is preset, the detection period L is divided into a plurality of training short periods L, and in the initial training short period L, the power pi of the current LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen are obtained to calculate the temperature value of the back of the LED display screen predicted by the next training short period L in a weighting mode;
In a non-initial training short period l, firstly acquiring a temperature value of the back surface of the LED display screen predicted by the last training short period l, and then acquiring the power pi of the current LED display screen, a weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and a weight value distributed by the temperature ti of the LED display screen;
Then, according to the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the previous training short period l, the weight value distributed by the power pi of the current LED display screen and the weight value distributed by the temperature ti of the LED display screen are adjusted, and then the temperature value of the back surface of the LED display screen predicted by the next training short period l is calculated according to the weight value distributed by the power pi of the newly adjusted LED display screen and the weight value distributed by the temperature ti of the LED display screen and the power pi of the current LED display screen and the temperature ti of the LED display screen in a weighting mode; then after the detection period L is completed, acquiring the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen, and calculating the temperature value of the back surface of the LED display screen to be predicted at a future time point according to the weight value distributed by the power pi of the latest LED display screen, the temperature ti of the LED display screen, the power pi of the current LED display screen and the temperature ti of the LED display screen; and then predicting the front temperature according to the predicted temperature value of the back of the LED display screen, thereby determining the correction coefficient.
Preferably, the detection period is 10 minutes.
Preferably, the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen are adjusted according to the deviation between the temperature ti of the current LED display screen and the temperature value of the back of the LED display screen predicted by the previous training short period l, specifically, if the deviation between the temperature ti of the current LED display screen and the temperature value of the back of the LED display screen predicted by the previous training short period l is 0, the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen are kept unchanged, and if the temperature ti of the current LED display screen is greater than the temperature value of the back of the LED display screen predicted by the previous training short period l, the weight value allocated to the power pi of the LED display screen is reduced and the weight value allocated to the LED display screen is increased, if the temperature ti of the current LED display screen is less than the temperature value of the back of the LED display screen predicted by the previous training short period l.
Preferably, if there is a deviation between the temperature ti of the current LED display screen of the last training short period and the temperature value of the back surface of the LED display screen predicted by the previous training short period L for the present training short period L, and the deviation is greater than the threshold value, the detection period L is prolonged.
The application also discloses an LED display screen correction system, which comprises a temperature sensor arranged on the back of the display screen and used for detecting the temperature ti of the LED display screen in real time, a power detection circuit and an upper computer, wherein the upper computer is used for calculating a predicted temperature tf of the back of the LED display screen according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen in a weighting manner, and the upper computer is used for controlling the completion of the detection period, and also used for obtaining the weight value distributed by the latest power pi of the LED display screen and the weight value distributed by the LED display screen and calculating the temperature value of the back of the LED display screen required to be predicted at a future time point according to the weight value distributed by the latest power pi of the LED display screen and the current power pi of the LED display screen and the temperature ti of the LED display screen; the correction coefficient is also used for predicting the front temperature according to the predicted temperature value of the back of the LED display screen so as to determine the correction coefficient, and the correction coefficient is also used for instructing the completion of correction of the LED display screen.
The power detection circuit is a circuit for measuring a power parameter in the circuit. The following are some common power detection circuits:
1. a resistance method power detection circuit: a current sensor (e.g., current transformer, hall sensor, etc.) is used to measure the load current and then the load voltage is measured through a resistor connected to the load. And calculating the power of the load through the product.
Hall effect power detection circuit: the load current is measured using a Hall effect sensor and the power is calculated in combination with the voltage across the load.
A power detection circuit of a shot resistance method: the power of the load can be calculated by measuring the pressure drop across the Shunt and the pressure difference across the load using a low value precision Shunt (Shunt) as a series branch between the load and ground.
4. Bidirectional switch type power detection circuit: a bi-directional switch (e.g., MOSFET) is used to control the connection and disconnection between the load and the source, and then sampling and amplification circuitry is used to detect and calculate the load power.
5. Rectifier power detection circuitry: the alternating current signal is subjected to rectification and filtering treatment and then is sampled and calculated in an analog or digital mode, so that the measurement of alternating current load power is realized.
These are just some of the common power detection circuits and other different circuit designs are possible in specific applications. When selecting a power detection circuit suitable for the requirements of a specific application, factors such as precision requirements, load types, power ranges and the like need to be considered.
The embodiment of the application also provides a computer device which can comprise terminal equipment or a server, and the upper computer can be configured in the computer device. The computer device is described below.
If the computer device is a terminal device, the embodiment of the application provides a terminal device, taking the terminal device as a mobile phone as an example:
The mobile phone comprises: radio Frequency (RF) circuitry, memory, input unit, display unit, sensors, audio circuitry, wireless fidelity (WIRELESS FIDELITY, wiFi) module, processor, and power supply.
The RF circuit can be used for receiving and transmitting signals in the process of receiving and transmitting information or communication, particularly, after receiving downlink information of the base station, the downlink information is processed by the processor; in addition, the data of the design uplink is sent to the base station. Typically, RF circuitry includes, but is not limited to, antennas, at least one amplifier, transceivers, couplers, low noise amplifiers (Low NoiseAmplifier, abbreviated as LNAs), diplexers, and the like. In addition, the RF circuitry may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (Global System of Mobile communication, GSM for Short), general packet radio service (GENERALPACKET RADIO SERVICE, GPRS for Short), code division multiple access (Code Division Multiple Access, CDMA for Short), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA for Short), long term evolution (Long Term Evolution, LTE for Short), email, short message service (Short MESSAGING SERVICE, SMS for Short), etc.
The memory may be used to store software programs and modules, and the processor executes the software programs and modules stored in the memory to perform various functional applications and data processing of the handset. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The input unit may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the handset. In particular, the input unit may include a touch panel and other input devices. The touch panel, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations thereon or thereabout by a user using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor, and can receive and execute commands sent by the processor. In addition, the touch panel may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The input unit may include other input devices in addition to the touch panel. In particular, other input devices may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc.
The display unit may be used to display information input by a user or information provided to the user and various menus of the mobile phone. The display unit may include a display panel, which may optionally be configured in the form of a liquid crystal display (LiquidCrystal Display, LCD) or an Organic Light-Emitting Diode (OLED) or the like. Further, the touch panel may overlay the display panel, and upon detection of a touch operation thereon or thereabout, the touch panel is transferred to the processor to determine the type of touch event, and the processor then provides a corresponding visual output on the display panel based on the type of touch event. Although in the figures the touch panel and the display panel are shown as two separate components to implement the input and output functions of the cell phone, in some embodiments the touch panel and the display panel may be integrated to implement the input and output functions of the cell phone.
The handset may also include at least one sensor, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of ambient light, and the proximity sensor may turn off the display panel and/or the backlight when the mobile phone moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured with the handset are not described in detail herein.
Audio circuitry, speakers, and microphone may provide an audio interface between the user and the handset. The audio circuit can transmit the received electric signal after the audio data conversion to a loudspeaker, and the loudspeaker converts the electric signal into a sound signal to be output; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit and converted into audio data, which are processed by the audio data output processor and sent via the RF circuit to, for example, another mobile phone, or which are output to a memory for further processing.
WiFi belongs to a short-distance wireless transmission technology, and a mobile phone can help a user to send and receive an email, browse a webpage, access streaming media and the like through a WiFi module, so that wireless broadband Internet access is provided for the user. Although a WiFi module is illustrated, it is understood that it does not belong to the necessary configuration of the mobile phone, and can be omitted entirely as needed within the scope of not changing the essence of the invention.
The processor is a control center of the mobile phone, and is connected with various parts of the whole mobile phone by various interfaces and lines, and executes various functions and processes data of the mobile phone by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, so that the mobile phone is monitored integrally. In the alternative, the processor may include one or more processing units; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor.
The handset further includes a power source (e.g., a battery) for powering the various components, preferably in logical communication with the processor through a power management system, such that functions such as managing charge, discharge, and power consumption are performed by the power management system.
Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which will not be described herein.
In this embodiment, the processor included in the terminal device further has the following functions:
The method comprises the steps that a predicted temperature value tf of the back surface of an LED display screen is calculated in a weighting mode according to power pi of the LED display screen, a weight value distributed by power pi of the LED display screen, temperature ti of the LED display screen and a weight value distributed by temperature ti of the LED display screen, a specific upper computer is used for controlling a detection period to be completed, the latest weight value distributed by power pi of the LED display screen and the weight value distributed by temperature ti of the LED display screen are obtained, and the temperature value of the back surface of the LED display screen, which needs to be predicted at a future time point, is calculated according to the latest weight value distributed by power pi of the LED display screen and the current weight value of power pi of the LED display screen and the current weight value ti of the LED display screen; the correction coefficient is also used for predicting the front temperature according to the predicted temperature value of the back of the LED display screen so as to determine the correction coefficient, and the correction coefficient is also used for instructing the completion of correction of the LED display screen.
If the computer device is a server, the embodiments of the present application further provide a server, where the server may have a relatively large difference due to different configurations or performances, and may include one or more central processing units (Central Processing Units, abbreviated as CPU) and a memory (e.g., one or more processors), one or more storage media (e.g., one or more mass storage devices) storing application programs or data. The memory and storage medium may be transitory or persistent. The program stored on the storage medium may include one or more modules, each of which may include a series of instruction operations on the server. Still further, the central processor may be configured to communicate with a storage medium and execute a series of instruction operations on the storage medium on a server.
The server may also include one or more power supplies, one or more wired or wireless network interfaces, one or more input/output interfaces, and/or one or more operating systems, such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, and the like.
In addition, the embodiment of the application also provides a storage medium for storing a computer program for executing the method provided by the embodiment.
The embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method provided by the above embodiments.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above embodiments may be implemented by hardware associated with program instructions, where the above program may be stored in a computer readable storage medium, and when executed, the program performs steps including the above method embodiments; and the aforementioned storage medium may be at least one of the following media: read-only Memory (ROM), RAM, magnetic disk or optical disk, etc.
The application also discloses a computer device, which comprises a terminal device or a server, wherein the upper computer is configured in the computer device. When the computer equipment adopts a pc machine, the temperature sensor and the power detection circuit can be electrically connected with the computer equipment through USB.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, with reference to the description of the method embodiments in part. The apparatus and system embodiments described above are merely illustrative, in which elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
The foregoing is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. The above disclosed embodiments are illustrative in all respects only and not all changes that come within the scope of the invention or are equivalent to the invention are intended to be embraced therein.
Claims (4)
- The LED display screen correction method is characterized by comprising the following steps:Detecting the power pi of the LED display screen in real time through a power detection circuit of the LED display screen, setting a temperature sensor on the back surface of the display screen, detecting the temperature ti of the LED display screen in real time through the temperature sensor, pre-distributing an initial weight value n0 to the power pi of the LED display screen, and distributing an initial weight value v0 to the temperature ti of the LED display screen, so that the temperature tf of the back surface of the LED display screen can be calculated in a weighting mode according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen;A detection period L is preset after the LED display screen is powered on, the detection period L is divided into a plurality of training short periods, the power pi of the current LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen are obtained in an initial training short period, and the temperature value of the back of the LED display screen predicted in the next training short period is calculated in a weighting mode;In a non-initial training short period, firstly acquiring a temperature value of the back surface of the LED display screen predicted by the last training short period for the training short period, and then acquiring the power pi of the current LED display screen, a weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and a weight value distributed by the temperature ti of the LED display screen;Then adjusting the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen according to the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period, specifically, if the deviation between the temperature ti of the current LED display screen and the temperature value of the back surface of the LED display screen predicted by the last training short period is 0, keeping the weight value allocated to the power pi of the current LED display screen and the weight value allocated to the temperature ti of the LED display screen unchanged, if the temperature ti of the current LED display screen is greater than the temperature value of the back surface of the LED display screen predicted by the last training short period, reducing the weight value allocated to the power pi of the LED display screen and increasing the weight value allocated to the temperature ti of the LED display screen, if the temperature ti of the current LED display screen is less than the temperature value of the back surface of the LED display screen predicted by the last training short period;Then weighting and calculating the temperature value of the back of the LED display screen predicted in the next training short period according to the weight value distributed by the power pi of the newly adjusted LED display screen, the weight value distributed by the temperature ti of the LED display screen, the power pi of the current LED display screen and the temperature ti of the LED display screen; then after the detection period L is completed, acquiring the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen, and weighting and calculating the temperature value of the back surface of the LED display screen to be predicted at a future time point according to the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen and the power pi of the current LED display screen and the temperature ti of the LED display screen; and then predicting the front temperature according to the predicted temperature value of the back of the LED display screen, thereby determining the correction coefficient.
- 2. The LED display screen calibration method of claim 1, wherein the detection period is 10 minutes.
- 3. The method for correcting an LED display screen according to claim 1, wherein if there is a deviation between the temperature ti of the current LED display screen in the last training short period and the temperature value of the back surface of the LED display screen predicted in the last training short period for the present training short period, and the deviation is greater than a threshold value, the detection period L is prolonged.
- The LED display screen correction system is characterized by comprising a temperature sensor arranged on the back of a display screen and used for detecting the temperature ti of the LED display screen in real time, a power detection circuit and an upper computer, wherein the upper computer is used for calculating a predicted temperature tf on the back of the LED display screen in a weighting mode according to the power pi of the LED display screen, the weight value distributed by the power pi of the LED display screen, the temperature ti of the LED display screen and the weight value distributed by the temperature ti of the LED display screen, and the specific upper computer is used for controlling the completion of a detection period and also used for obtaining the weight value distributed by the power pi of the latest LED display screen and the weight value distributed by the temperature ti of the LED display screen and calculating a predicted temperature required value on the back of the LED display screen in the future time point in a weighting mode according to the weight value distributed by the latest power pi of the LED display screen and the weight value distributed by the temperature ti of the LED display screen and the current LED display screen; the correction coefficient is also used for predicting the front temperature according to the predicted temperature value of the back of the LED display screen so as to determine the correction coefficient, and the correction coefficient is also used for instructing the completion of correction of the LED display screen.
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