An air conditioner function test with pneumatic control circuit of press machine. Including DC regulated power supply and SCM control circuit. The latter includes a photoelectric trigger circuit. The photoelectric trigger circuit comprises a two way voltage divider resistor and a light-emitting diode series circuit, wherein, the photosensitive triode Q1 and Q2 are respectively coupled with one of the two light-emitting diodes. The other end of Q1 and Q2, Down and Up are respectively connected with the I / O terminal 28 and 27 of the singlechip. Singlechip 4, 5 feet, respectively, and the driver chip 2, 1 feet connection. The 14 and 15 feet of the 12V voltage terminal and the driving chip are respectively connected with the coils of the relay RY1 and the RY2. Drop control relay RY1 and RY2 normally open contact respectively control the press end and the control end up. It is not necessary to repeatedly pressing the control button, can automatically and accurately grasp the status and function of control board contact probe, automatic control of pneumatic press. Thereby, the labor amount of the workers can be reduced and the production efficiency can be improved.
【技术实现步骤摘要】
【技术保护点】
一种空调器功能测试用气动压床的控制电路，包括直流稳压电源以及由直流稳压电源Ｖｃｃ供电的单片机控制电路，其特征在于单片机控制电路包括与直流稳压电源连接的光电触发电路，光电触发电路包括并连在Ｖｃｃ和地之间的两路分压电阻及发光二极管串联电路、与Ｖｃｃ连接并分别与两发光二极管之一耦合的光敏三极管Ｑ１和Ｑ２，Ｑ１的另一端Ｄｏｗｎ与单片机的Ｉ／Ｏ端２８连接，Ｑ２的另一端Ｕｐ与单片机的Ｉ／Ｏ端２７连接，单片机的４、５脚分别与驱动芯片的２、１脚连接，１２Ｖ电压端和驱动芯片的１４、１５脚之间分别连接着继电器ＲＹ１和ＲＹ２的线圈，１２Ｖ电压端和驱动芯片的１６脚之间连接着蜂鸣器，继电器ＲＹ１和ＲＹ２的常开触头分别连接在Ｄｏｗｎ＿２２０Ｖ和压床的下降控制端以及Ｕｐ＿２２０Ｖ与压床的上升控制端之间。
【技术特征摘要】
【专利技术属性】
技术研发人员：高青梅，于心艳，盖学刚，
申请(专利权)人：海信集团有限公司，青岛海信空调有限公司，
类型：实用新型
国别省市：95[中国|青岛]
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