ABSTRACT
The mouse light-dark transition test is a Specifications for Operation, aims to do the noise assessment eva luate to test materials’ to Anxiolytic Constituents. This paper briefly introduces the research significance of infrared counter, research status and development trend both in china and aboard, which also introduces the use method of sensor and vhdl Programming Software. On this basis, this Paper also describes the design methods of infrared counter’s hardware and software. Hardware circuit includes infrared sensors and the display parts of counter, and the software is written by vhdl language, mainly to achieve the purpose of record pulse, count, display and other functions.
Keywords:Infrared counters,vhdl,pyroelectric sensors,digital control
