LED flash substrate temperature detection based on NTC thermistor

NTC thermistor-based LED flash substrate temperature detection is a method that uses NTC thermistors to monitor the temperature of the LED flash substrate in real time to ensure that the LED flash operates within the normal temperature range.

When the substrate temperature exceeds the set threshold, the system triggers an alarm or takes other cooling measures, thereby extending the life of the LED flash and improving its reliability.

This temperature detection method has wide application value in photography, stage lighting and other fields.

Introduction

With the continuous development of electronic technology, LED flash substrates are increasingly used in various electronic devices. However, the LED flash substrate generates a large amount of heat during operation. If the heat is not properly controlled, it may affect the performance and life of the substrate. Therefore, it is particularly important to detect and control the temperature of the LED flash substrate in real time. This article will introduce a LED flash substrate temperature detection method based on NTC thermistor.

Introduction to NTC thermistor

NTC (Negative Temperature Coefficient) thermistor is a semiconductor material with a negative temperature coefficient, and its resistance decreases as the temperature increases. Due to its unique temperature characteristics, NTC thermistors are widely used in temperature measurement and control fields. In the temperature detection of LED flash substrate, NTC thermistor can be used as a temperature sensor to monitor the temperature changes of the substrate in real time.

LED flash substrate temperature detection principle based on NTC thermistor

The principle of LED flash substrate temperature detection based on NTC thermistor is as follows:

1. Install an NTC thermistor on the LED flash substrate, connect one end of it to the power supply, and the other end to a measuring device such as a digital multimeter or microprocessor.
2. When the LED flash substrate generates heat, the resistance value of the NTC thermistor will change. Since there is a certain relationship between resistance and temperature, the temperature of the substrate can be measured indirectly by measuring the resistance of the NTC thermistor.
3. Read the resistance value of the NTC thermistor through a measuring device such as a digital multimeter or microprocessor and convert it into the corresponding temperature value. In this way, the temperature changes of the LED flash substrate can be monitored in real time.

LED flash substrate temperature detection method based on NTC thermistor

The LED flash substrate temperature detection method based on NTC thermistor is as follows:

1. Select the appropriate NTC thermistor model and specification, and select the appropriate resistance range and accuracy level according to actual needs.
2. Install the NTC thermistor at an appropriate position on the LED flash substrate to ensure that it can accurately reflect the temperature changes of the substrate.
3. Read the resistance value of the NTC thermistor through a measuring device such as a digital multimeter or microprocessor and convert it into the corresponding temperature value.
4. Set the temperature threshold according to actual needs. When the substrate temperature exceeds the threshold, take corresponding control measures, such as reducing current, increasing heat dissipation, etc., to ensure the stability and reliability of the substrate.
5. Calibrate and maintain the NTC thermistor regularly to ensure its accuracy and reliability.

Advantages of LED flash substrate temperature detection based on NTC thermistor

LED flash substrate temperature detection based on NTC thermistor has the following advantages:

1. Real-time: NTC thermistor can monitor the temperature changes of the LED flash substrate in real time, providing timely information support for control measures.
2. High accuracy: NTC thermistor has high resistance value accuracy and temperature resolution, and can accurately reflect the temperature changes of the substrate.
3. Good stability: NTC thermistor has stable temperature characteristics and can maintain good performance in a wide temperature range.
4. Low cost: Compared with other temperature sensors, NTC thermistors have lower cost and smaller size, and are suitable for various miniaturized electronic devices.
5. Easy to maintain: NTC thermistor has a simple structure, is easy to install and maintain, and can meet the needs of various practical applications.

Summarize

LED flash substrate temperature detection based on NTC thermistor is an effective temperature detection method with the advantages of real-time performance, high accuracy, good stability, low cost and easy maintenance. In practical applications, appropriate NTC thermistor models and specifications can be selected according to specific needs, and corresponding control measures can be taken to ensure the stability and reliability of the LED flash substrate.