Self-adaptive thermal correction system based on module temperature

Abstract

The utility model discloses a self-adaptive thermal correction system based on module temperature, comprising a power supply system for providing a 3.3 V stable voltage; the temperature sensor is used for measuring the real-time temperature of the LED display screen module; the pull-up resistor is configured in the temperature sensor to ensure accurate reading of temperature data; and the receiving card system is used for receiving the temperature data transmitted from the temperature sensor and adjusting the brightness of the RGB lamp beads according to the data so as to control the color temperature of the LED display screen. According to the utility model, the temperature of the module can be better acquired, the color temperature can be better controlled at a fixed value, the luminance of the display screen is more uniform, the display quality is better, and the display effect is better.

Description

Technical Field

[0001] The utility model relates to the field of display equipment, and in particular to a self-adaptive thermal correction system based on module temperature. Background Art

[0002] LED displays have been widely used in advertising, public information display and entertainment due to their high brightness, long life and energy saving. However, due to the physical characteristics of LEDs, their light output and color temperature will change with ambient temperature, especially in continuous operation and at different brightness levels. This problem is particularly prominent.

[0003] The impact of temperature on LED luminous efficiency and color stability is mainly manifested in two aspects: first, when LED works in a high temperature environment, its luminous efficiency will decrease, resulting in reduced brightness; second, different colors of LED have different sensitivities to temperature, which will cause color temperature drift, affecting the overall color consistency and visual effects of the display. For example, the temperature coefficient of blue light LED is large, and the increase in temperature will significantly affect its light output, which in turn affects the color temperature of the mixed white light. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an adaptive thermal correction system based on module temperature, which can effectively solve the deficiencies in the prior art.

[0005] The utility model is realized by the following technical scheme: an adaptive thermal correction system based on module temperature, comprising:

[0006] Power supply system, providing a stable voltage of 3.3V;

[0007] Temperature sensor, used to measure the real-time temperature of the LED display module;

[0008] Pull-up resistor, configured in the temperature sensor to ensure accurate reading of temperature data;

[0009] The receiving card system is used to receive the temperature data from the temperature sensor and adjust the brightness of the RGB lamp beads according to the data, thereby controlling the color temperature of the LED display.

[0010] As a preferred technical solution, the temperature sensor model is DS18B20.

[0011] As a preferred technical solution, the receiving card system can store the temperature correction parameters locally to maintain the consistency of color temperature at different brightnesses, and dynamically adjust the brightness of the RGB lamp beads by reading the temperature on the module.

[0012] As a preferred technical solution, the receiving card system further includes a temperature correction module for comparison and correction. After receiving the temperature data, the module compares the set target ambient temperature with the current ambient temperature and automatically adjusts the color temperature correction coefficient.

[0013] As a preferred technical solution, the temperature correction module calculates the cold screen temperature and the hot screen temperature, wherein the cold screen temperature refers to the temperature of the module when the LED display screen is just powered on, and the hot screen temperature refers to the module temperature reached after the LED display screen runs at maximum brightness in a white screen state for a set time.

[0014] The beneficial effects of the utility model are as follows: By integrating a temperature sensor in the LED display module, the system can monitor and respond to the temperature changes of the module in real time, thereby dynamically adjusting the brightness of the RGB lamp beads and effectively controlling the color temperature. This not only maintains the consistency of the color temperature of the display, but also significantly improves the stability of the visual effect, especially when the external ambient temperature changes greatly.

[0015] Secondly, by precisely controlling the color temperature, color deviation caused by temperature is avoided, ensuring the authenticity and aesthetics of the displayed content. In addition, by maintaining the stability of color temperature, this system reduces visual fatigue caused by color temperature mismatch and improves the user's viewing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0019] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0020] like Figure 1As shown, the utility model is an adaptive thermal correction system based on module temperature, including a power supply system, providing a stable voltage of 3.3V;

[0021] Among them, the temperature sensor is used to measure the real-time temperature of the LED display module;

[0022] Wherein, the pull-up resistor is configured in the temperature sensor to ensure accurate reading of temperature data;

[0023] Among them, the receiving card system is used to receive temperature data transmitted from the temperature sensor, and adjust the brightness of the RGB lamp beads according to the data, thereby controlling the color temperature of the LED display.

[0024] In this embodiment, the temperature sensor model is DS18B20.

[0025] The receiving card system can store the temperature correction parameters locally to maintain the consistency of color temperature at different brightness levels, and dynamically adjust the brightness of the RGB lamp beads by reading the temperature on the module.

[0026] The receiving card system further includes a temperature correction module for comparison and correction. After receiving the temperature data, the module compares the set target ambient temperature with the current ambient temperature and automatically adjusts the color temperature correction coefficient.

[0027] The temperature correction module calculates the cold screen temperature and the hot screen temperature. The cold screen temperature refers to the temperature of the module when the LED display is just powered on, and the hot screen temperature refers to the module temperature reached after the LED display runs at maximum brightness in the white screen state for a set time.

[0028] Here’s how it works:

[0029] The power system consists of a 3.3V regulated power supply module (UA2) composed of AMS1117, which provides stable power input for the entire LED display module and its temperature sensor.

[0030] The DS18B20 temperature sensor (T1) is configured in the display module and works with a 4.7K pull-up resistor (RT1) to monitor and record the module's temperature in real time. The sensor's data output line (DQ1) is directly connected to the power module to ensure accurate reading and transmission of temperature data.

[0031] The system receives data from the temperature sensor and adjusts the brightness of the RGB lamp beads according to the data. The output of each color lamp bead is adjusted through the software algorithm to control the color temperature within the range of 6500K±500K.

[0032] The system dynamically adjusts the brightness of the RGB lamp beads based on the real-time data provided by the DS18B20 temperature sensor through the receiving card. This mechanism allows the system to maintain the consistency of color temperature under different operating conditions and reduce the impact of temperature fluctuations on color temperature.

[0033] The receiving card system stores temperature correction parameters. When it detects that the module temperature is different from the preset temperature, it automatically adjusts the color temperature correction coefficient to adapt to environmental changes.

[0034] After receiving the temperature data, the temperature correction module compares the current ambient temperature with the target ambient temperature through the built-in software algorithm and adjusts the color temperature correction coefficient. The definition of cold screen temperature and hot screen temperature helps the system to make accurate corrections in different states.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An adaptive thermal correction system based on module temperature, characterized in that: include: Power supply system, providing a stable voltage of 3.3V; Temperature sensor, used to measure the real-time temperature of the LED display module; Pull-up resistor, configured in the temperature sensor to ensure accurate reading of temperature data; The receiving card system is used to receive the temperature data from the temperature sensor and adjust the brightness of the RGB lamp beads according to the data, thereby controlling the color temperature of the LED display.

2. The module temperature-based adaptive thermal correction system according to claim 1, characterized in that: The temperature sensor model is DS18B20.

3. The module temperature-based adaptive thermal correction system according to claim 1, characterized in that: The receiving card system can store the temperature correction parameters locally to maintain the consistency of color temperature at different brightnesses, and dynamically adjust the brightness of the RGB lamp beads by reading the temperature on the module.

4. The module temperature-based adaptive thermal correction system according to claim 1, characterized in that: The receiving card system further includes a temperature correction module for comparison and correction. After receiving the temperature data, the module compares the set target ambient temperature with the current ambient temperature and automatically adjusts the color temperature correction coefficient.

5. The module temperature-based adaptive thermal correction system according to claim 4, characterized in that: The temperature correction module calculates the cold screen temperature and the hot screen temperature, wherein the cold screen temperature refers to the temperature of the module when the LED display screen is just powered on, and the hot screen temperature refers to the module temperature reached after the LED display screen runs at maximum brightness in a white screen state for a set time.

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