Temperature measurement, using a temperature measuring instrument to quantitatively measure the temperature of an object. At present, there are dozens of methods for temperature measurement: the phenomenon of thermal expansion and contraction caused by the influence of temperature on solids, liquids and gases; under constant volume conditions, the pressure of gas (or steam) varies with different temperatures. The role of the thermoelectric effect; the change in resistance with temperature; the effect of thermal radiation. With the development of science and technology and the needs of modern industrial technology, temperature measurement technology is constantly improving and improving. As the temperature range is wider and wider, different temperature measuring instruments are manufactured according to different requirements.
This article will introduce the circuit design and implementation of wireless temperature measurement, infrared temperature measurement, remote temperature measurement and other systems.
Design of Wireless Temperature Measurement System Based on CC2430 and DS18B20
In this paper, from the aspects of low power consumption, small size and simple use, a wireless temperature measurement system is designed based on RF SoC CC2430 and digital temperature sensor DS18B20. The whole system consists of multiple wireless nodes and one base station. The wireless node works at each temperature measurement location for temperature data acquisition and wireless transmission. The base station wirelessly communicates with multiple nodes, and displays the data through the digital tube, and can also send data to the PC through the RS-232 serial port.
Design of Embedded Temperature Measurement System Based on 1-Wire Bus
This paper introduces an embedded temperature measurement system design based on DS18820's 1-Wire bus, and gives the hardware circuit and some driver codes. The system has the characteristics of simple design, convenient expansion, less resource consumption of the main controller, convenient software control and easy realization of automatic testing, and has been successfully applied in engineering practice. Compared with CAN, RS 485 and other buses have unparalleled advantages in terms of design cost, cost and complexity. They are more suitable for small industrial control systems and will have a broader space in future industrial applications.
Multi-node wireless temperature measurement system based on USB interface
This paper designs a multi-node remote temperature monitoring system based on wireless data transmission and USB interface. Through wireless data transmission, on the one hand, the spatial range of node extensions is expanded, and on the other hand, the length of the temperature measurement cable is greatly shortened to facilitate wiring. The USB interface realizes the rapid transmission of the temperature measurement data of each node extension to the host, replacing the traditional RS 232 interface form, which greatly facilitates the connection with the host. The host software completes the data conversion, storage, curve and report generation, realizes the information management of the mixed construction monitoring, and can also construct a Web server to realize the off-site monitoring of information.
Application of TMP275 in Handheld Real-time Thermometer
This paper introduces the implementation of the TMP275-based handheld temperature test system, first introduces the system design block diagram, and then introduces the system's hardware and software design. The system can also be improved, and an external USB interface is required to realize real-time upload of temperature data. The system uses TI's low-power MSP430 microcontroller chip, digital temperature sensor, and the power consumption is effectively controlled. It has a good application prospect in the case where the power consumption is very strict.
Design of Temperature Measurement System Based on RF Micropower Chip
In this paper, a micro-power RF chip (nRF24E1) is used to design a point-to-multipoint wireless RF data acquisition system with small size, low cost, stable performance, low power consumption and reliable data transmission. Real-time data is realized for multiple sampling points. Wireless acquisition. After actual use, the temperature measurement system consisting of DSl8820 and single-chip AT89S52 and RF chip fully meets the needs of users.
Transmission line infrared temperature measurement system based on GPRS transmission
In this paper, a new design scheme of infrared thermal image detection for transmission lines based on GPRS transmission is designed for the weak link of current transmission line temperature detection. The system uses infrared camera detection technology to obtain infrared camera image, and combines GPRS wireless network for real-time data transmission, realizing real-time online monitoring of transmission line temperature. The field operation test shows that the system can realize the real-time or timed infrared thermal image fault detection of important parts of the transmission line, and the technical indicators have reached the design requirements.
Design of NC System for Remote Temperature Sensor Based on FPGA
The numerical control circuit of the thermometer designed in this paper takes Altera's CycloneII series FPGA as the core, and completes a series of processes from overall scheme design to system debugging. The entire CNC system occupies more than 3,700 LEs and 99,200 memory bits. It provides a stable and reliable data processing platform for the whole temperature detector, which can provide a certain reference for higher-level function expansion and has a broad application prospect.
Design of Temperature Measurement System Based on Single Chip Microcomputer and PC Serial Port Communication
The design in this paper proposes a temperature measurement system based on Dallas Semiconductor's digital temperature sensor DS18B20 and ATMEL's AT89S52 microcontroller, which can be displayed on a PC system via a serial port. The system is easy to install and highly reliable. On-site temperature measurement in harsh environments.
Digital temperature measurement system based on ARM and DS18B20
In this paper, the digital temperature sensor is used to digitize the signal at the test point, which improves the reliability of the transmission, simplifies the peripheral circuit, and facilitates the installation and installation of the sensor on the machine tool. The ARM processor controls the acquisition of the digital temperature signal and communicates with the host PC, while other hardware resources provide other functions of the thermal compensation system. Based on the introduction of the digital temperature sensor DS18B20, this paper gives the software and hardware design of the system, and gives a detailed explanation of the key points in the software implementation.
Design of infrared thermometer with wireless data transmission
This paper introduces the design of infrared thermometer based on Planck's law, uses the wireless communication module PTR8000 to realize the data transmission between the upper computer and the infrared thermometer, and develops the upper computer management software to realize the real-time display of temperature. It has been verified by experiments that the thermometer has certain measurement accuracy and meets the general industrial requirements.
LabVIEW Temperature Measurement System Design
In this paper, the virtual temperature tester based on LabVIEW converts the temperature of the measured object into analog signal such as voltage or current. After the signal conditioning circuit performs power amplification and filtering, it is converted into a standard voltage signal that can be collected by the data acquisition card. The analog signal is converted into a digital signal in the data acquisition card, and is sent to the computer bus under the data acquisition command, and the acquired data is subjected to various processing in the PC using the already installed virtual instrument software.
Design and Implementation of Infrared Thermometer Based on STM32
This paper develops an infrared thermometer based on the colorimetric temperature measurement principle. Compared with other thermometers, it can offset the influence of the emissivity on the temperature measurement accuracy, making the measurement result closer to the actual surface temperature of the object to be tested. Thanks to the 32-bit STM32 as the processing chip, compared with other 8-bit or 16-bit processors, the data processing capability is greatly enhanced, the temperature measurement performance is greatly improved, and the volume of the thermometer is also reduced. The utility model has the advantages of simple structure, convenient operation, good reliability and low price.
Design of human body thermometer based on pyroelectric sensor p7187
This paper introduces the principle and basic design circuit of a p7187 pyroelectric sensor for rapid measurement of human body temperature. The sensitivity of the infrared thermometer is 20 mV/°C, the resolution is better than 0.2°C, and the error is within 0.3°C. It has the advantages of non-contact rapid temperature measurement, which provides an important means to reduce mutual infection.
Design and Simulation of PIC Single Chip Digital Thermometer
This article is based on PIC microcontroller to design digital thermometer, directly using digital temperature sensor DS18B20, with the microcontroller to control 18B20, to measure temperature. The display part can be used lcd1602, the single chip can directly drive the lcd1602 display temperature, the hardware is simple and stable. DS18B20 adopts single bus technology, which is easy to expand, and has the advantages of fast conversion speed, high conversion precision, and direct reading and display of temperature by the tablet.
Design of telemetry thermometer based on quartz crystal
The Y-cut quartz crystal is introduced as the digital thermometer of the sensor. The output frequency signal has a good linear relationship with the temperature. There is no problem such as temperature drift and time drift that the analog sensor is difficult to overcome. The thermometer can be used for high-precision temperature measurement. With the control system. The experimental results show that the digital thermometer designed in this paper has a resolution of 0.05 °C. The system uses the wireless data module to achieve the transmission of temperature data.
Design of multi-channel thermometer system based on single chip microcomputer
A multi-channel temperature detection system based on AT89S51 single-chip microcomputer and digital temperature sensor DS18B20 is proposed. The working principle of the main components is introduced. The hardware design process and software program flow chart are given in detail. The system has strong stability, high detection accuracy and low price, and has broad application prospects in the field of automatic control.
UV Germicidal Light Air Purifier
Uv Air Purifier,Uvc Air Cleaner,Uv Germicidal Lamp,Air Duct Uv Light
Dongguan V1 Environmental Technology Co., Ltd. , https://www.v1airpurifier.com