论文部分内容阅读
我厂自制成功矿仓料位光电自控装置,用于控制电选机矿仓料位。此装置体积小,安全可靠,使用二年来未出现过事故。其电路如图所示,工作原理如下述: 合上开关K_1,接通变压器初级电源,次级15V感应电压经整流、滤波、稳压后,供给自控装置以直流稳压电源,6.3V的感应电压作为光电源。在矿仓内部并联安装两个光电管,一个装于矿仑底部,一个装于矿仓上部。当矿仓的料位低于底部光电管时,光电管受光照而导通,BG_1基极电位为负,BG_1截止。BG_2基极接于BG_1发射极上,由于它们是同相位的,BG_1截止,BG_2也截止,中间继电器
Our factory made a successful self-made photoelectric control unit of mine level material, used to control the electric machine ore bin level. This device is small, safe and reliable, the use of two years have not occurred. The circuit shown in Figure, the working principle is as follows: Close the switch K_1, connected to the transformer primary power supply, the secondary 15V induced voltage by the rectifier, filter, regulator, the supply of self-controlled devices to DC power supply, 6.3V induction Voltage as a light source. Installed in parallel within the mine two photocell, one at the bottom of the mine, one installed in the upper ore warehouse. When the level of the ore bin is lower than that of the bottom phototube, the phototube is illuminated and turned on, the base potential of BG_1 is negative and BG_1 is off. BG_2 base connected to the BG_1 emitter, because they are in phase, BG_1 end, BG_2 also ends, the middle relay