Automatic stereo library Control system of
There are loading units on the entry/exit platform. Conveyors and stackers are selected as transfer tools. It is required to put the loading unit into the designated cargo space, and select microswitch and photocell in the control circuit to transmit information. The action sequence is that the stacker can move only after the conveyor works. After the sensor stops the conveyor at the designated position, the stacker takes the goods. The actions of these machines are completely completed according to the pre designed action sequence. The characteristic of this control is that the control command is transmitted from the input signal to the output signal in the specified order. When a certain condition is met, the next signal will be transmitted. The movement is active. Generally, the program control repeats the start and stop actions at each stage, so it is also called the sequence control method. The so-called reaction control is to send part of the output signal back to the input, compare it with the input signal, and use the result of the comparison to control the system. The commonly used program controls in daily life include active washing machines, rice cookers, active vending machines, active doors, traffic signals, elevators, etc. Reaction control is selected for electric iron, electric heating furnace, electric refrigerator car, air tuner and TV signal generator. In fact, program control and reaction control are often combined to achieve good results. With the development of computers, high-performance microcomputers are widely used in the program control of automated warehouse - microcontrollers integrate many functions for the special control printed circuit board developed by automated warehouse. This kind of printed circuit board microcomputer system becomes the special control equipment for the stacker of automated warehouse. It not only has the function of ordinary micro controller, but also has the function of information processing and sequence control. The micro controller can be installed on the control panel of the stacker and the ground control panel. This system consists of program circuit, logic circuit and operation circuit. Its basic action is to input the instruction into the printed circuit board, call out the necessary program through a read-only memory, Yuefu sends out the instruction of the driver program according to the signal of each detector to memorize the current address, and tells to calculate the traveling distance of the stacker when receiving the instruction.
