Safety control system

Abstract

The invention discloses a safety control system, comprising a master processor, two slave processors, an input loop detection module and am input module, wherein the two slave processes are respectively provided with a working component for controlling a relay; wherein the input loop detection module detects that the input module is not abnormal, the input end of the input module can receive an input signal and transmit the corresponding input signal to the two slave processors; the mater processor and the slave processes share one working clock which has been successively divided into a pulse detection region, a communication region and an operating region; in the pulse detection region, the master processor controls the input loop detection module to perform loop detection on the input module; in the communication region, the master processor communicates with the two salve processors; in the operating region, the slave processors control the working component to control the relay according to the input signal. According to the safety control system, high reliable control can be provided to the relay, and the processors can work synchronously and orderly.

Description

technical field [0001] The invention relates to the field of safety control, in particular to a safety control system for controlling the work of relays so that large-scale equipment can operate under safe conditions. Background technique [0002] In machine tools, packaging machinery, plastic machinery, automobile manufacturing and other industries, the equipment on the production line is generally large and heavy equipment, which requires personnel to operate. If the equipment is abnormal, it may cause casualties or disasters, such as the rotary motion of the drum (may Hands involved), the movement of the robot outside its normal working area is very likely to cause danger, and the application of relays in these devices can stop the operation of the equipment in time when the equipment is abnormal, effectively reducing the possibility of disasters. The relay is a safety switch that is controlled and executed. It needs the safety control system as the controller to control ...

AI Technical Summary

Problems solved by technology

The relay is a safety switch that is controlled and executed. It needs the safety control system as the controller to control it according to the situation. Since the normal operation of the relay has a crucial impact on the safety of the site, the reliability of the safety control system is extremely high. Now Some technical schemes realize the corresponding opening and closing of the contacts of the relay through the control of the logic circuit by a single processor, which requires a high-performance processor and logic circuit to ensure timely and correct response to the input signal, but it is still difficult to guarantee Its reliability, once the processor or a part of the logic circuit goes wrong, it will cause the relay to malfunction

Images