The paper introduces the application of DS18B20 in the temperature detection system and discusses specialty of DS18B20 and system hardware and software design . The interfaceing circuit and some programs are described.
Real-time temperature detection, display, voice alerting, data record, data unloading with IC and analysis of 38 points on locomotive bearing with the use of the 1-wire digital sensor is an important method which ensures train safety.
It is introduced in this paper that the networks of the HTK 289 type infrared axle temperature detection system are checked and accepted by using of table statistics analysis method under the same condition,and that troube diagnoses are carried out on networks.
Via analysis about the operation and problems found in the infrared axle box temperature detection system on the three trunk lines of Jingguang,Jinghu and Jingha,several suggestions on strengthening the infrared axle box temperature detection system and preventing the hot axle cut are given in such aspects as infrared hardware,functions and management.
In this paper, the temperature conditions requied by perishable foodstuffs, the basic means of thermostatic eontroI, and the coordination of thermostatic control and temperature detection are introduced. Finally, the author proposes the principal requirements to the temperature-detecting instruments as well as the types of these instruments available in the reefer ears and mechanically refrigerated cars.
Laser-excited UV fluorescence spectra of OH radicals at transition in C2H2/air flame have been measured. Airlines in 0-0, 1-0, 2-1 bands obtained are in very good agreement with those by other methods, thus the present work provides useful data for temperature detection of flame. We have also determined the OH concentration distribution at different heights of the flame.
The following article makes an introduction to the performance indexes, main characteristics and working principle of Model JW-3 mobile digital temperature detector employed in the routine temperature detection of grain. The device passed provincial technical appraisal on April 25, 1985.