Design of Monitoring and Alarm System for the Ship’s Engine Room

2011 ◽  
Vol 268-270 ◽  
pp. 1663-1668
Author(s):  
Chang Shun Wang ◽  
Hai Rong Xiao ◽  
Wei Gang Pan ◽  
Yao Zhen Han
Keyword(s):  
Signal Processing ◽  
Can Bus ◽  
Physical Layer ◽  
Alarm System ◽  
Interface Circuit ◽  
Engine Room ◽  
Protection Circuit ◽  
Signal Processing Circuit ◽  
Processing Circuit

A monitoring and alarm system for the ship’s engine room based on CAN bus is introduced in this paper. The paper describes the sensors and signal processing circuit used in the monitoring and alarming system in detail. Analog isolated measurement modules is designed in order to avoid damage to the interface circuit of the system. To get the greatest possible reliability in communication, protection circuit is increased to the CAN bus and implemented on the CAN bus physical layer redundancy.

Design of Alarm System with Pyroelectric Infrared Sensor

2011 ◽  
Vol 110-116 ◽  
pp. 4883-4887
Author(s):  
Xiao Yan Shang ◽  
Jian Wu ◽  
Xing Wang
Keyword(s):  
Signal Processing ◽  
Fresnel Lens ◽  
Alarm System ◽  
Infrared Sensor ◽  
Reliable Performance ◽  
Working Principle ◽  
Signal Processing Circuit ◽  
The Voice ◽  
Processing Circuit

Based on pyroelectric infrared sensor working principle, the passive pyroelectric infrared alarm system is designed, which is mainly used for safety of residence house to detect whether outsiders enter or not. This system is made of pyroelectric infrared sensor, Fresnel lens and monitoring circuits. The concealment of infrared is well applied on the circuits , amplifying and filtering circuit , infrared signal processing circuit are designed, then the voice chip is utilized to simulate alarm voice for warning thieves and burglars .After many experiments, This system has sensitive response , high anti-interference ability and safe and reliable performance.

scholarly journals Dynamic FPAA-based Mixed-Signal Processing Circuit for Thin-Film CdTe/Lead-Free Perovskite Photodetectors

2021 ◽  
Vol 27 (2) ◽  
pp. 22-30
Author(s):  
Ivailo M. Pandiev ◽  
Mariya P. Aleksandrova
Keyword(s):  
Signal Processing ◽  
Moving Objects ◽  
Cdte Film ◽  
Electrical Signal ◽  
Lead Free ◽  
Mixed Signal ◽  
Precise Position ◽  
Smooth Change ◽  
Signal Processing Circuit ◽  
Processing Circuit

New photodetector structure combining thinned CdTe film with lead-free perovskite photoelectric film was produced and investigated. This setting of the CdTe thickness results in photodetector parameters’ competitiveness to the state-of-the-art in the field of advanced photoelectric materials. The device shows a promising sensitivity of ~40 μA/W, maximum responsivity of 10.6 mA/W at 460 nm, equal rise and fall times of 30 ms, and high linearity (maximum linearization error is less than 0.6 %). However, the optoelectronic performance of CdTe/lead-free perovskite structures integrated with signal processing circuit remains unexplored. For this purpose, Field Programmable Analogue Array (FPAA)-based mixed-signal processing circuit is developed for pulse width modulated electrical signal with duty cycle controlled by the illumination degree of the detecting photoelement. This novel approach guarantees a smooth change of the electrical output at a smooth change of the input illumination between the light and dark switching states and can be practically applied as a precise position detector of moving objects. The paper represents a synergistic connection between microelectronics, electronics, and signal technology.

Signal Processing Circuit for Spirometry

2019 ◽  
Author(s):  
C. Vasilache ◽  
D. Dobrescu ◽  
E. Franti ◽  
O.G. Profirescu ◽  
M. Dascalu ◽  
...  
Keyword(s):  
Signal Processing ◽  
Signal Processing Circuit ◽  
Processing Circuit

Study on the Temperature and Speed Test System

2012 ◽  
Vol 590 ◽  
pp. 333-336
Author(s):  
Qian Zhao ◽  
Shan Zhen Xu ◽  
Qi Chen ◽  
Cheng Wang
Keyword(s):  
Signal Processing ◽  
Data Acquisition ◽  
Data Acquisition System ◽  
Test System ◽  
Acquisition System ◽  
Motor Speed ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Signal Processing Circuit ◽  
Processing Circuit

A kind of multiple parameter data acquisition system was designed based on single-chip microcomputer which can realized the data acquisition of temperature and DC motor speed. The data acquisition system consists of sensor, signal processing circuit, single-chip microcomputer and LED digital tube. The speed signal is acquired by photoelectric sensor, put into the Single-chip microcomputer processed after processed by signal processing circuit, and displayed the value in the digital tubes. The temperature signal is acquired by digital sensor, and the Single-chip microcomputer can read the data directly. Through two independent keyboards, the test system realized the data acquisition and data switch displaying of the multiple parameters.

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