Temperature monitoring method and system for liquid crystal display screen

Abstract

The invention provides a temperature monitoring method and system for a liquid crystal display screen, solves the problem of poor temperature monitoring effect in the traditional liquid crystal display screen technology, effectively reduces the risk of overheating or supercooling of equipment, reduces energy consumption, and meanwhile, improves the temperature monitoring efficiency by monitoring the temperature inside and outside the display screen in real time and calculating the temperature difference. And the temperature change is effectively managed after the power supply is turned off.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature monitoring, and in particular to a temperature monitoring method and system for a liquid crystal display screen. Background Art

[0002] The development of liquid crystal displays (LCDs) has evolved from simple monochrome displays to today's high resolution, wide color gamut, and low power consumption. In the early days, LCDs were limited to small electronic devices due to their small size and limited viewing angle, but with the introduction of thin-film transistor (TFT) technology, the display effect has been significantly improved. This has led to large-size, high-resolution LCDs being widely used in areas such as televisions and computer monitors. In recent years, technological advances have not only improved picture quality and energy efficiency, but have also introduced innovations such as curved screens and ultra-thin designs, promoting the popularity of LCDs in various consumer fields.

[0003] However, existing LCD technology also faces some problems. First, temperature monitoring and management is a key problem. The accuracy of temperature sensors and real-time data processing capabilities still need to be improved to avoid display quality degradation or equipment damage due to overheating or overcooling. Second, complex control algorithms are not perfect in predicting and adjusting temperature, resulting in misjudgment or lag. This not only affects the response speed of the system, but also increases energy consumption. Summary of the invention

[0004] Based on the above technical problems, the present invention proposes a temperature monitoring method and system for a liquid crystal display screen, and the technical solutions adopted are as follows: A method for monitoring the temperature of a liquid crystal display screen, the method comprising: S1: The temperature sensor periodically obtains the temperature of the liquid crystal display screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; S2: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the LCD screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; S3: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system is activated, an alarm is sounded, and the protection system is activated at the same time to cut off the power supply; S4: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds a temperature threshold, the controller heats the liquid crystal display screen to prevent the temperature difference between the inside and outside from being too large, thereby preventing water mist from appearing inside the liquid crystal display screen.

[0005] Preferably, the S1 includes: S11: a temperature sensor No. 1 is arranged on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is arranged near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is arranged near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; S12: Synchronize the temperature values ​​obtained by the three temperature sensors in time so that one timestamp corresponds to three temperatures, and transmit the obtained temperature data to the controller.

[0006] Preferably, the S2 includes: S21: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; S22: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; S23: When the predicted temperature value No. 1 reaches the threshold value No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold value No. 2, the controller starts the cooling system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold value No. 3, the controller starts the delayed alarm system.

[0007] Preferably, S3 includes: S31: Obtaining temperature data at the time stamp during the delayed alarm period, and obtaining a temperature change trend according to the temperature data during the delayed alarm period; S32: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system is activated. At the same time as the early warning system is activated, the protection system is activated and the power supply is cut off. S33: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold value, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

[0008] Preferably, the S4 includes: S41: After the power of the display screen is turned off, the first temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; S42: comparing the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start a heating measure and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. S43: During the heating process, the temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

[0009] A temperature monitoring system for a liquid crystal display screen, the system comprising: Information acquisition system: The temperature sensor periodically acquires the temperature of the LCD screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; Control system: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; Early warning system: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system will be activated, an alarm will be sounded, and the protection system will be activated to cut off the power supply; Heating system: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds the temperature threshold, the controller heats the LCD screen to prevent the temperature difference between the inside and outside from being too large, which may cause water mist to appear inside the LCD screen.

[0010] Preferably, the information collection system comprises: Temperature acquisition system: a temperature sensor No. 1 is set on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is set near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is set near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; Information transmission system: The temperature values ​​obtained by the three temperature sensors are synchronized in time so that one timestamp corresponds to three temperatures, and the obtained temperature data is transmitted to the controller.

[0011] Preferably, the control system comprises: Temperature change rate acquisition system: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; Temperature prediction system: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; Feedback system: When the predicted temperature value No. 1 reaches the threshold No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold No. 2, the controller starts the heat dissipation system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold No. 3, the controller starts the delayed alarm system.

[0012] Preferably, the early warning system comprises: Temperature change trend acquisition system: obtain the temperature data on the time stamp during the delayed alarm period, and obtain the temperature change trend based on the temperature data during the delayed alarm period; Protection system: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system will be activated. At the same time as the early warning system is activated, the protection system will be activated and the power supply will be cut off. Self-check system: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

[0013] Preferably, the heating system comprises: Temperature difference acquisition system: After the power of the display screen is turned off, the No. 1 temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; Data analysis system: compares the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start heating measures and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. Heating control system: During the heating process, temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

[0014] Beneficial effects of the invention: The invention proposes a temperature monitoring method and system for a liquid crystal display screen, which solves the problem of poor temperature monitoring effect in traditional liquid crystal display screen technology, and effectively reduces the risk of overheating or overcooling of the equipment, reduces energy consumption, and provides strong support for the development of liquid crystal display technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The present invention provides a method for monitoring the temperature of a liquid crystal display screen. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] One embodiment of the present invention provides a method for monitoring the temperature of a liquid crystal display screen, the method comprising: S1: The temperature sensor periodically obtains the temperature of the liquid crystal display screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; S2: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the LCD screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; S3: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system is activated, an alarm is sounded, and the protection system is activated at the same time to cut off the power supply; S4: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds a temperature threshold, the controller heats the liquid crystal display screen to prevent the temperature difference between the inside and outside from being too large, thereby preventing water mist from appearing inside the liquid crystal display screen.

[0018] The working principle and effect of the above technical solution are as follows: the temperature sensor monitors the temperature of the liquid crystal display screen in real time, and regularly obtains and records the temperature data at each time point. The temperature data is sent to the controller for analysis. The controller analyzes the received temperature data and identifies the trend of temperature changes in the display screen. If the temperature is found to continue to rise and it is expected that the temperature will exceed the set safety threshold at a certain time in the future, the controller will start preventive measures in advance. If the controller's preventive measures fail to effectively prevent the continuous rise in temperature and exceed the safety threshold, the system will trigger an alarm and start the protection mechanism. At this time, the power supply of the display screen will be cut off, thereby reducing the temperature and preventing serious hardware damage. After the power is cut off, the temperature of the display screen will drop rapidly. If the temperature of the display screen drops too quickly, the temperature inside the display screen will be much lower than the external ambient temperature, which may cause water mist (condensation) to form in the display screen. To prevent this phenomenon, the controller will properly heat the liquid crystal display screen to maintain the temperature difference between the inside and outside within a safe range to ensure that the display screen will not be affected by water mist or damaged when it is restarted. This temperature monitoring method has real-time monitoring and automatic early warning functions. It can take measures in advance when the temperature approaches the threshold, cut off the power supply in combination with the automatic protection mechanism to prevent damage, and avoid condensation by adjusting the temperature difference between the inside and outside, thereby improving the safety and reliability of the LCD screen and extending the service life of the equipment.

[0019] In one embodiment of the present invention, the S1 includes: S11: a temperature sensor No. 1 is arranged on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is arranged near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is arranged near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; S12: Synchronize the temperature values ​​obtained by the three temperature sensors in time so that one timestamp corresponds to three temperatures, and transmit the obtained temperature data to the controller.

[0020] The working principle and effect of the above technical solution are as follows: by setting multiple temperature sensors at different positions of the display screen, the temperature information of each key part is obtained. The first temperature sensor is located on the back of the display screen and is specifically used to monitor the temperature of the inner surface of the screen to reflect the thermal state of the display area. The second temperature sensor is installed near the heat dissipation system to help evaluate the working efficiency of the heat dissipation device. The third temperature sensor is located near the power supply system and is used to detect the heat accumulation of the power supply components. The temperature data of the three sensors are synchronized in time to ensure that each timestamp can correspond to the temperature value of three different positions. The synchronized temperature data is transmitted to the controller as the basis for subsequent temperature trend analysis and decision-making. The advantage of multi-point temperature monitoring and synchronous processing is that it can provide comprehensive temperature information of different key parts of the display screen, so that the controller can analyze the temperature change trend more accurately, thereby implementing more accurate control measures. The method improves the sensitivity and response speed to the thermal state of the system, ensures the effective monitoring and management of the heat dissipation system and the power supply system, and maximizes the safety and reliability of the liquid crystal display screen.

[0021] In one embodiment of the present invention, S2 includes: S21: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; S22: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; S23: When the predicted temperature value No. 1 reaches the threshold value No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold value No. 2, the controller starts the cooling system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold value No. 3, the controller starts the delayed alarm system.

[0022] The working principle and effect of the above technical solution are as follows: the controller receives three synchronized temperature data, and obtains the temperature change rate of sensors No. 1, No. 2 and No. 3 by calculating the temperature change rate at each timestamp. The rate data is used to evaluate the speed and trend of temperature change. Based on the current temperature data and the calculated temperature change rate, the controller uses a prediction algorithm to estimate the temperature change of the three sensors in the future. Make decisions based on the predicted temperature value: when the predicted temperature value No. 1 is close to its threshold, the controller reduces the heat accumulation inside the display screen by reducing the brightness of the display screen. When the predicted temperature value No. 2 is close to the No. 2 threshold, the controller will start the heat dissipation system to enhance the heat dissipation efficiency and prevent the temperature from rising further. When the predicted temperature No. 3 is close to the No. 3 threshold, the controller starts the delayed alarm system to provide early warning for possible faults and remind the user to take further measures. By calculating the temperature change rate and predicting the future temperature, the controller can actively foresee and respond to potential overheating problems. According to the temperature prediction values ​​of different parts, the system takes corresponding measures, such as adjusting the brightness, starting heat dissipation, or triggering an alarm, to ensure that the temperature inside the display screen is effectively managed. This mechanism improves the system's response speed and accuracy to abnormal temperature conditions, reduces the negative impact of temperature fluctuations on device performance and safety, and thereby improves the reliability and service life of the LCD display.

[0023] In one embodiment of the present invention, S3 includes: S31: Obtaining temperature data at the time stamp during the delayed alarm period, and obtaining a temperature change trend according to the temperature data during the delayed alarm period; S32: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system is activated. At the same time as the early warning system is activated, the protection system is activated and the power supply is cut off. S33: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold value, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

[0024] The working principle and effect of the above technical solution are as follows: in the delayed alarm state, the controller continues to obtain the temperature data of the third temperature sensor and analyzes the data to understand the temperature change trend. If the temperature data analysis shows that the temperature continues to rise, and it is predicted that the temperature may reach or exceed the critical value of the protection system in the future, the early warning system and the protection system will be started at the same time. At this time, an alarm will be issued to remind the user to pay attention, and the power will be cut off to protect the equipment from damage. Once the temperature sensor No. 3 detects that the temperature drops below the set third threshold, the power of the display will be restarted. The system will perform a self-check to confirm that all faults have been eliminated. If the display confirms that everything is normal, it will restart. In addition, the relevant power-off events and fault information will be recorded in the fault log for future reference and analysis. The advantage of this method is that through the continuous monitoring of the temperature change trend during the delayed alarm period, the possible dangerous temperature that may be reached is analyzed and predicted in real time, and the early warning and protection systems are effectively started to cut off the power supply to avoid equipment damage. When the temperature returns to a safe level, the automatic restart and self-check mechanism ensure that the display screen returns to normal operation safely, and the fault log records provide valuable data support. This mechanism improves the operational safety of the display screen and the overall reliability of the system through automated fault handling and prevention functions.

[0025] In one embodiment of the present invention, the S4 includes: S41: After the power of the display screen is turned off, the first temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; S42: comparing the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start a heating measure and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. S43: During the heating process, the temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

[0026] The working principle and effect of the above technical solution are: One embodiment of the present invention provides a temperature monitoring system for a liquid crystal display screen, the system comprising: Information acquisition system: The temperature sensor periodically acquires the temperature of the LCD screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; Control system: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; Early warning system: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system will be activated, an alarm will be sounded, and the protection system will be activated to cut off the power supply; Heating system: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds the temperature threshold, the controller heats the LCD screen to prevent the temperature difference between the inside and outside from being too large, which may cause water mist to appear inside the LCD screen.

[0027] The working principle and effect of the above technical solution are: In one embodiment of the present invention, the information collection system comprises: Temperature acquisition system: a temperature sensor No. 1 is set on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is set near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is set near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; Information transmission system: The temperature values ​​obtained by the three temperature sensors are synchronized in time so that one timestamp corresponds to three temperatures, and the obtained temperature data is transmitted to the controller.

[0028] The working principle and effect of the above technical solution are: In one embodiment of the present invention, the control system comprises: Temperature change rate acquisition system: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; Temperature prediction system: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; Feedback system: When the predicted temperature value No. 1 reaches the threshold No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold No. 2, the controller starts the heat dissipation system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold No. 3, the controller starts the delayed alarm system.

[0029] The working principle and effect of the above technical solution are: In one embodiment of the present invention, the early warning system comprises: Temperature change trend acquisition system: obtain the temperature data on the time stamp during the delayed alarm period, and obtain the temperature change trend based on the temperature data during the delayed alarm period; Protection system: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system will be activated. At the same time as the early warning system is activated, the protection system will be activated and the power supply will be cut off. Self-check system: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

[0030] The working principle and effect of the above technical solution are: In one embodiment of the present invention, the heating system comprises: Temperature difference acquisition system: After the power of the display screen is turned off, the No. 1 temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; Data analysis system: compares the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start heating measures and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. Heating control system: During the heating process, temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

[0031] In addition, the heating system dynamically adjusts the heating time according to the current temperature of the inner surface of the display screen, and the heating time is obtained by the following calculation formula:

[0032] Where t is the expected heating time of the heating system, Indicates the temperature of the outer surface of the display. represents the initial temperature of the inner surface of the display screen, C represents the total heat capacity of the heating system and the display screen, P represents the heating power of the heating system, h represents the heat dissipation coefficient of the inner surface of the display screen, A represents the heat dissipation area of ​​the inner surface of the display screen, After the heating system heats the inner surface of the display screen to a certain temperature, it stops heating and uses the residual heat of the inner surface of the display screen to heat the inner surface of the display screen, so that the temperature difference between the inner and outer surfaces of the display screen is lower than the temperature difference threshold. In order to consider the temperature rise during the residual heating time and the nonlinear characteristics of the system response, the The residual heating time and the The calculation formula is as follows:

[0033] in, It indicates the current temperature of the inner surface of the display screen after the heating system stops heating. k indicates the temperature cooling coefficient of the inner surface of the display screen. The unit of k is Kelvin / second. The heating system works After a certain time, the temperature of the inner surface of the display reaches , the heating system stops working and uses residual heat to heat the display so that the temperature difference between the inner and outer surfaces of the display is lower than the temperature difference threshold.

[0034] The working principle and effect of the above technical solution are as follows: the calculation formula of heating time is to calculate the time required for the system to rise from the initial temperature to the target temperature. Represents the difference between the initial system temperature and the ambient temperature. The greater the temperature difference, the greater the heat loss. C represents the total heat capacity of the heating system and the display, which represents the ratio of the total heat required in the system to the temperature change when the temperature changes. Higher heat capacity means more energy is required to heat the same temperature difference. This formula improves the accuracy of temperature control during heating, avoids equipment damage caused by too high or too low temperature, and prevents energy waste caused by ambient heat loss. In addition, by considering heat capacity and heat loss factors, this formula effectively optimizes heating time and energy efficiency.

[0035] After the power of the display screen is turned off, the No. 1 temperature sensor switches to real-time mode and continuously monitors the temperature of the inner surface of the display screen. The external temperature sensor also obtains the temperature of the outer surface of the display screen in real time. By comparing the temperatures of the inner and outer surfaces, the temperature difference of the display screen is calculated. The calculated temperature difference is compared with the pre-set temperature difference threshold. If the temperature difference is greater than the temperature difference threshold, the controller decides to start the heating measure and sends a heating instruction to the heating system. After receiving the instruction, the heating system heats the inner surface of the display screen to alleviate the temperature difference. The heating system starts and monitors the inner surface temperature data fed back by the No. 1 temperature sensor in real time. When the temperature difference is lower than the set temperature difference threshold, the heating system stops working. The heating system dynamically adjusts the heating time according to the current inner surface temperature to ensure the stability of the temperature change. Without the risk of overheating, the residual temperature of the inner surface of the display screen is used to gradually achieve a balance between the inner and outer temperatures. The advantage of the heating system is that by real-time monitoring of the inner and outer temperatures of the display screen and calculating the temperature difference, it ensures effective management of temperature changes after the power is turned off. When the temperature difference exceeds the set threshold, the heating system automatically starts and dynamically adjusts the heating time to smooth the inner and outer temperature difference and prevent the formation of condensed water. Ultimately, achieving temperature balance through residual heat not only improves the safety and reliability of the display, but also effectively extends the service life of the equipment and avoids potential damage caused by changes in ambient temperature.

[0036] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for monitoring the temperature of a liquid crystal display, characterized in that: The method comprises: S1: The temperature sensor periodically obtains the temperature of the liquid crystal display screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; S2: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the LCD screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; S3: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system is activated, an alarm is sounded, and the protection system is activated at the same time to cut off the power supply; S4: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds a temperature threshold, the controller heats the liquid crystal display screen to prevent the temperature difference between the inside and outside from being too large, thereby preventing water mist from appearing inside the liquid crystal display screen.

2. A method for monitoring the temperature of a liquid crystal display screen according to claim 1, characterized in that: The S1 includes: S11: a temperature sensor No. 1 is arranged on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is arranged near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is arranged near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; S12: Synchronize the temperature values ​​obtained by the three temperature sensors in time so that one timestamp corresponds to three temperatures, and transmit the obtained temperature data to the controller.

3. The temperature monitoring method of a liquid crystal display screen according to claim 1, characterized in that: The S2 includes: S21: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; S22: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; S23: When the predicted temperature value No. 1 reaches the threshold value No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold value No. 2, the controller starts the cooling system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold value No. 3, the controller starts the delayed alarm system.

4. The temperature monitoring method of a liquid crystal display screen according to claim 1, characterized in that: The S3 includes: S31: Obtaining temperature data at the time stamp during the delayed alarm period, and obtaining a temperature change trend according to the temperature data during the delayed alarm period; S32: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system is activated. At the same time as the early warning system is activated, the protection system is activated and the power supply is cut off. S33: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold value, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

5. The temperature monitoring method of a liquid crystal display screen according to claim 1, characterized in that: The S4 includes: S41: After the power of the display screen is turned off, the first temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; S42: comparing the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start a heating measure and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. S43: During the heating process, the temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

6. A temperature monitoring system for a liquid crystal display screen, characterized in that: The system comprises: Information acquisition system: The temperature sensor periodically acquires the temperature of the LCD screen, records the temperature corresponding to each timestamp, and transmits the temperature corresponding to the recorded timestamp to the controller; Control system: The controller obtains the temperature change trend in the LCD screen according to the temperature corresponding to the recorded timestamp. When the temperature in the screen continues to rise and the controller predicts that the temperature at a certain timestamp will exceed the threshold, the controller takes control measures in advance; Early warning system: When the temperature inside the display screen continues to rise after being controlled by the controller, the early warning system will be activated, an alarm will be sounded, and the protection system will be activated to cut off the power supply; Heating system: After the power of the display screen is turned off, the temperature inside the display screen drops rapidly. When the difference between the temperature inside the display screen and the ambient temperature exceeds the temperature threshold, the controller heats the LCD screen to prevent the temperature difference between the inside and outside from being too large, which may cause water mist to appear inside the LCD screen.

7. A temperature monitoring system for a liquid crystal display screen according to claim 6, characterized in that: The information collection system comprises: Temperature acquisition system: a temperature sensor No. 1 is set on the back of the display screen, and the temperature sensor No. 1 obtains the temperature of the inner surface of the display screen; a temperature sensor No. 2 is set near the heat dissipation system of the display screen, and the temperature sensor No. 2 obtains the temperature of the heat dissipation system of the display screen; a temperature sensor No. 3 is set near the power supply system of the display screen, and the temperature sensor No. 3 obtains the temperature of the power supply system of the display screen; Information transmission system: The temperature values ​​obtained by the three temperature sensors are synchronized in time so that one timestamp corresponds to three temperatures, and the obtained temperature data is transmitted to the controller.

8. A temperature monitoring system for a liquid crystal display screen according to claim 6, characterized in that: The control system comprises: Temperature change rate acquisition system: The controller receives the synchronized temperature data and calculates the change rate of each temperature at the timestamp to obtain the change rate of temperature No. 1, the change rate of temperature No. 2, and the change rate of temperature No. 3; Temperature prediction system: Based on the current temperature data and the calculated change rates of the first, second and third temperatures, the controller predicts the temperature values ​​within a period of time in the future to obtain the first predicted temperature value, the second predicted temperature value and the third predicted temperature value; Feedback system: When the predicted temperature value No. 1 reaches the threshold No. 1, the controller reduces the brightness value of the display screen to reduce the temperature of the display screen. When the predicted temperature value No. 2 reaches the threshold No. 2, the controller starts the heat dissipation system to reduce the temperature of the display screen. When the predicted temperature value No. 3 reaches the threshold No. 3, the controller starts the delayed alarm system.

9. A temperature monitoring system for a liquid crystal display screen according to claim 6, characterized in that: The early warning system includes: Temperature change trend acquisition system: obtain the temperature data on the time stamp during the delayed alarm period, and obtain the temperature change trend based on the temperature data during the delayed alarm period; Protection system: Analyze the temperature change trend. If it is determined that the temperature continues to rise and it is predicted that the temperature change will reach the critical value of the protection system in the future, the early warning system will be activated. At the same time as the early warning system is activated, the protection system will be activated and the power supply will be cut off. Self-check system: When the temperature value measured by the No. 3 temperature sensor is lower than the third threshold, the power is restarted and the display screen performs a self-check. After confirming that the fault has been eliminated, the display screen restarts and records the power failure in the fault log.

10. A temperature monitoring system for a liquid crystal display screen according to claim 6, characterized in that: The heating system comprises: Temperature difference acquisition system: After the power of the display screen is turned off, the No. 1 temperature sensor changes from periodic acquisition to real-time acquisition of the temperature of the inner surface of the display screen. At the same time, the external temperature sensor of the display obtains the temperature of the outer surface of the display screen in real time, compares the inner and outer surface temperatures of the display screen, and obtains the temperature difference of the display screen; Data analysis system: compares the temperature difference of the display screen with a set temperature difference threshold. When the temperature difference is greater than the temperature difference threshold, the controller decides to start heating measures and sends a heating instruction. After receiving the instruction, the heating system heats the inner surface of the display screen. Heating control system: During the heating process, temperature sensor No. 1 continuously obtains the temperature of the inner surface of the display screen. When the temperature difference is lower than the temperature difference threshold, the heating system stops working.

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