基于PT2262／2272的输液报警系统

PT2262/2272是台湾普城公司生产的一种CMOS工艺制造的低功耗低价位通用编、解码电路,PT2262/2272最多可有12位(A0-A11)三态地址端管脚(悬空,接高电平,接低电平),任意组合可提供531441地址码,PT2262最多可有6位(D0-D5)数据端管脚,设定的地址码和数据码从17脚串行输出。解码芯片PT2272接收到信号后,其地址码经过两次比较核对后,VT脚才输出高电平,与此同时相应的数据脚也输出高电平。可用于无线遥控发射接收电路。将PT2262/2272应用在输液报警装置中,完成液体将尽时遥控呼叫值班护士,取得了很好的效果。

Transfusion Siren Based on PT2262/2272

PT2262/2272,produced by Taiwan Pucheng Co.Ltd, is a general encoding/decoding technology,featuring low-power consumption and low-price utilizing CMOS.They have a maximum of 12 bits of tri-state(hanging, high level,low level) address pins(A0-A11) and provides up to 532,441 address codes.Meanwhile,PT2262 has up to 6 bits of data pins(D0-D5) and the encoded address and data waveform serially output from its No.17 pin.When the decoding chip PT2272 receives the signal,its VT pin and the corresponding data pin will output high level after comparing the address code twice.They can be used in wireless remote control circuits.In a transfusion alarm device,the PT2262/PT2272 have achieved good results,because the device can inform the nurses on duty remotely when the fluid is about to dry out.