DS18B20溫度感知器線束

This paper proposes an automatic identification method for multiple digital temperature sensors DS18B20 on a single bus. By designing a circuit composed of a decoder 74LS138, a two-input four-NAND gate 74LS00P, and an analog switch CD4066, the DS18B20 digital temperature sensor software program is written using the Keil C51 tool. Under the control of the microcontroller, the system obtains and saves the serial numbers of all sensors in the form of power-on initialization, automatically identifies the sensors, and performs multi-point temperature measurement. The experimental results show that the system can match the obtained serial numbers with each sensor, so that the sensors can be installed and used, realizing true automatic identification.

DS18b20溫度感知器線束

DS18B20 sensor is a commonly used digital temperature sensor. 輸出是數位訊號, 具有體積小等特點, 硬體開銷低, 抗干擾能力強, 和高精度. DS18B20數位溫度感測器易於連接, 包裝後可應用於多種場合, 例如管道類型, 螺桿式, 磁鐵式, 和不銹鋼封裝類型. 有各種型號, 包括 LTM8877, LTM8874等.

It mainly changes its appearance depending on the application. 封裝好的DS18B20可用於電纜溝溫度測量, 高爐水循環溫度測量, 鍋爐溫度測量, 機房溫度測量, 農業溫室溫度測量, 潔淨室溫度測量, ammunition depot temperature measurement and other non-limiting temperature occasions. Wear-resistant and bump-resistant, 尺寸小, 方便使用, and various packaging forms, suitable for digital temperature measurement and control of various small space equipment.

Ds18b20 temperature sensor and 3.5mm audio connector

1, 技術性能說明:
①, a unique single-wire interface,DS18B20 in the connection with the microprocessor only need a port line to achieve the two-way communication with the microprocessor DS18B20.
②, 溫度範圍 -55 ℃~ +125 ℃, the inherent temperature error (note, not the resolution,Here before is wrong) 1 ℃.
③, support multi-point networking,Multiple DS18B20 can be connected in parallel on a single three-wire,Can only be 8 in parallel,To achieve multi-point temperature measurement,If the number is too large,Will make the power supply voltage is too low,Thus causing the signal transmission instability.
④, 電源: 3.0 ~ 5.5V / 直流 (parasitic power supply can be data lines)
⑤, in use does not require any external components
⑥, the measurement results in 9 to 12-bit digital serial transmission mode
⑦, stainless steel tube diameter Φ6
⑧, for DN15 ~ 25, DN40 ~ DN250 various media industrial pipe and small space equipment temperature measurement
⑨, the standard installation thread M10X1, M12X1.5, G1 / 2 “選修的
⑩, PVC cable direct outlet or German ball junction box outlet,方便與其他電氣設備連接.
DS18B20 + and Maxim Integrated information
Manufactured by Maxim Integrated, DS18B20+ is a temperature sensor.
應用領域

The product is applicable to the temperature measurement and control field of freezer, granary, storage tank, telecommunication room, electric machine room, cable trunking and so on.
Bearing, cylinder, textile machinery, air conditioning, and other small space industrial equipment temperature measurement and control.
Car air-conditioning, 冰箱, 冰櫃, and low-temperature drying oven, 等等.
Heating / cooling pipe heat metering,Central air conditioning household heat measurement and industrial temperature measurement and control.
Model specifications

Model Temperature range Installation thread Cable length Suitable pipe
TS-18B20 -55 到 125 None 1.5 米
TS-18B20A -55 ～ 125 M10X1 1.5m DN15 ~ 25
TS-18B20B -55 ～ 125 1/2 “G terminal box DN40 ~ 60