Ground Multi-sensor Infrared Sensor Detection System

Ground Multi-sensor Detection System is composed of Control Center, Multi-sensor Detectors set in each given place and Handset used by single soldier. Based on the system's demand of low cost, small size and high respondence, the article starts with the modulate chopper techniques used in pyroelectric detecting system. After comparison, it offers a newly self-modulation design which can greatly reduce volume and weight, and at the same time the cost can also be decreased. This paper reviews the principles of operations of pyroelectric detectors, presents some typical pyroelectric materials and factors influencing the choice of pyroelectric material for various applications and compares the characteristics of some integrated circuits for infrared signal process. At last, it discusses the measurement of the system, the application field and future outlook for infrared sensors.