DS18B20
#DS18B20
#temperature sensor
#one-chip computer
#digitization
#PC interface
#trend curve
#liquid crystal
#detection
#measurement
#data logging
Description: The digitization of temperature will be examined to reveal its response dynamics and changes in various detection fields. This method effectively illustrates trend curves. A solution involves sampling real-time temperature using a microcontroller, which transmits data to a PC for curve plotting. The decreasing cost of liquid crystal displays, along with their increasing capacity and reduced engineering consumption, facilitates convenient interfacing with microcontrollers. This document presents the design of a temperature detection system utilizing the DS18B20 sensor, the LCD12864ST7920 display, and the STC89C52 microcontroller. The LCD12864ST7920 displays the temperature curve, while the system comprises the STC89C52 microcontroller, the DS18B20 temperature sensor, an LCD12864ST7920 display, a keyboard circuit, and a warning circuit, as illustrated in Figure 1. The basic theory and characteristics of the DS18B20 digital temperature sensor have been studied, along with its applications. The S51 enhanced experiment board and ISP programmable device have been integrated to develop application software for the DS18B20, leading to the creation of a DIY digital thermometer. This study provides a comprehensive understanding of the DS18B20, potentially enabling the development of an intelligent temperature-controlled system.
The described temperature detection system employs the DS18B20 digital temperature sensor, which utilizes a one-wire interface for communication. This feature allows for a simple connection to the STC89C52 microcontroller, minimizing the number of required pins and facilitating easy integration. The microcontroller is programmed to read temperature data from the sensor at regular intervals. The data is then processed and sent to the LCD12864ST7920 display, which visually represents the temperature trend over time.
The LCD12864ST7920 is a graphical liquid crystal display capable of rendering complex visual information, including temperature curves. It connects directly to the microcontroller, allowing for real-time updates of displayed information. The integration of the keyboard circuit enables user interaction, allowing users to set parameters or initiate specific functions within the system.
The warning circuit serves as an alert mechanism, notifying users when temperature readings exceed predefined thresholds. This feature is crucial for applications where temperature control is critical, such as in industrial processes or environmental monitoring.
In summary, the system is designed to provide an efficient and user-friendly method for monitoring temperature variations. By leveraging modern components such as the DS18B20 sensor and the LCD12864ST7920 display, this design exemplifies advancements in temperature sensing technology and microcontroller applications in real-time data visualization and control systems.Will be examined the digitization of temperature to reveal not enough yet its course of change of complete response and change the law in some detection fields, and it is one of the effective methods to draw out the curve of trend. A solution to sample the on-the-spot temperature as the next machine one-chip computer among them, pass PC to, draw curve on the it.
Because some formation figure liquid crystal display cost lowers, reveals the capacity is greater and greater, engineering is consumed smaller and smaller, and can be with the interface of the one-chip computer conveniently year by year, this text has designed the detection system of a kind of temperature. Utilize DS18B20 to gather the temperature, LCD12864ST7920 The liquid crystal display is direct and one-chip computer interface of STC8 9C52, in LCD12864ST7920 On if you can`t reveal, examine into temperature by sum temperature curve.
The system is mainly by one-chip computer STC89C52, temperature sensor DS18B20, some formation liquid crystal displays LCD12864ST7920, Circuit of the keyboard and warning circuit make up shown as in Fig. 1. In the front, we have studied the basic theory knowledge of DS18B20 new digital temperature sensor, having a more overallly knowledge of characteristic and application of DS18B20, we combine S51 enhanced experiment board in this lesson, ISP programmable device studies the application software programming of DS18B20, do DS18B20 and examine warm experiment, a our own digital thermometer of DIY, through to study experiment this, know development of DS18B20 skillfully, even may believe you own temperature-controled system of intelligence!
Introduce the hardware apparatus of the experiment at first: S51 enhanced one-chip computer experiment board ISP programmable device DS18B20 temperature sensor
The described temperature detection system employs the DS18B20 digital temperature sensor, which utilizes a one-wire interface for communication. This feature allows for a simple connection to the STC89C52 microcontroller, minimizing the number of required pins and facilitating easy integration. The microcontroller is programmed to read temperature data from the sensor at regular intervals. The data is then processed and sent to the LCD12864ST7920 display, which visually represents the temperature trend over time.
The LCD12864ST7920 is a graphical liquid crystal display capable of rendering complex visual information, including temperature curves. It connects directly to the microcontroller, allowing for real-time updates of displayed information. The integration of the keyboard circuit enables user interaction, allowing users to set parameters or initiate specific functions within the system.
The warning circuit serves as an alert mechanism, notifying users when temperature readings exceed predefined thresholds. This feature is crucial for applications where temperature control is critical, such as in industrial processes or environmental monitoring.
In summary, the system is designed to provide an efficient and user-friendly method for monitoring temperature variations. By leveraging modern components such as the DS18B20 sensor and the LCD12864ST7920 display, this design exemplifies advancements in temperature sensing technology and microcontroller applications in real-time data visualization and control systems.Will be examined the digitization of temperature to reveal not enough yet its course of change of complete response and change the law in some detection fields, and it is one of the effective methods to draw out the curve of trend. A solution to sample the on-the-spot temperature as the next machine one-chip computer among them, pass PC to, draw curve on the it.
Because some formation figure liquid crystal display cost lowers, reveals the capacity is greater and greater, engineering is consumed smaller and smaller, and can be with the interface of the one-chip computer conveniently year by year, this text has designed the detection system of a kind of temperature. Utilize DS18B20 to gather the temperature, LCD12864ST7920 The liquid crystal display is direct and one-chip computer interface of STC8 9C52, in LCD12864ST7920 On if you can`t reveal, examine into temperature by sum temperature curve.
The system is mainly by one-chip computer STC89C52, temperature sensor DS18B20, some formation liquid crystal displays LCD12864ST7920, Circuit of the keyboard and warning circuit make up shown as in Fig. 1. In the front, we have studied the basic theory knowledge of DS18B20 new digital temperature sensor, having a more overallly knowledge of characteristic and application of DS18B20, we combine S51 enhanced experiment board in this lesson, ISP programmable device studies the application software programming of DS18B20, do DS18B20 and examine warm experiment, a our own digital thermometer of DIY, through to study experiment this, know development of DS18B20 skillfully, even may believe you own temperature-controled system of intelligence!
Introduce the hardware apparatus of the experiment at first: S51 enhanced one-chip computer experiment board ISP programmable device DS18B20 temperature sensor
With a 7-Channel Smart Temperature Sensor MAX6698 circuit diagram
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The electronic thermometer circuit diagram for blind
Measuring range: room temperature is -10 to 40 degrees Celsius; body temperature is 36 to 41 degrees Celsius; Resolution: room temperature is 0.5 degrees Celsius, body temperature is 0.05 degrees Celsius; error: room temperature <1 degree Celsius, body temperature <0.1 degrees Celsius. When switch S1 is in position 1, it displays the room temperature profile; position 2 displays the body temperature profile. Components V1, R1, R2, RP1, and RP2 form the temperature measurement circuit.
The temperature measurement circuit is designed to monitor and display two distinct temperature ranges: ambient room temperature and body temperature. The circuit operates with a measuring range for room temperature from -10 to 40 degrees Celsius and for body temperature from 36 to 41 degrees Celsius. The resolution of the circuit is fine-tuned to provide accurate readings, with a room temperature resolution of 0.5 degrees Celsius and a body temperature resolution of 0.05 degrees Celsius. The specified error margins indicate a maximum deviation of less than 1 degree Celsius for room temperature measurements and less than 0.1 degrees Celsius for body temperature measurements.
The circuit utilizes a switch, S1, which allows the user to select between the two temperature profiles. In position 1, the circuit outputs the room temperature, while in position 2, it outputs the body temperature. The operational components include a voltage source (V1), resistors (R1, R2), and potentiometers (RP1, RP2) that are integral to the measurement process. Resistors R1 and R2 are likely part of a voltage divider network that aids in scaling the temperature sensor output to a readable format. Potentiometers RP1 and RP2 can be used for calibration purposes, allowing fine adjustments to ensure that the readings are accurate within the specified error margins.
The temperature sensor, which is not explicitly mentioned but is assumed to be part of the circuit, converts temperature changes into an electrical signal that can be processed by the circuit. The output from the sensor is conditioned by the resistive components to produce a voltage level that corresponds directly to the measured temperature. This voltage is then displayed on an appropriate display unit, which could be an analog gauge or a digital readout, depending on the design of the circuit.
Overall, this temperature measurement circuit is a practical solution for monitoring both ambient and body temperatures with high accuracy and user-friendly operation through the selection switch.
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