Automatic ringing device for changing of guard

Abstract

The invention discloses an automatic ringing device for changing of the guard. The automatic ringing device for changing of the guard comprises a first NOR gate, a second NOR gate, a third NOR gate, a fourth NOR gate, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first triode, a second triode, a loudspeaker, a first diode, a second diode, a third diode, a music integrated sounder, a binary counter and a key switch, wherein an anode inputting end of a power supply is respectively connected with a collector electrode of the second triode, a sixteen pin end of the binary counter, a first end of the second capacitor, a first end of the key switch and a first end of the loudspeaker; and a second end of the loudspeaker is connected with a collector electrode of the first triode. By the automatic ringing device for changing of the guard, two different time intervals are generated by two oscillators formed by the NOR gates, alternate operation is realized, the time of workers is controlled within a certain range, fatigue operation caused by the reason that the workers work for a long time is avoided, and operation errors are reduced.

Description

technical field [0001] The invention relates to an automatic bell, in particular to an automatic bell for changing shifts. Background technique [0002] Rotating machinery refers to machinery that mainly relies on rotating actions to complete specific functions. Typical rotating machinery includes steam turbines, gas turbines, centrifugal and axial compressors, fans, pumps, water turbines, generators and aeroengines, etc., which are widely used in electric power, petrochemical, metallurgical and aerospace sectors. With the development of science and technology, most of the control of rotating machinery has been intelligentized, but it still requires relevant staff to control and process the relevant links. However, after a long working time, people are prone to fatigue, which will affect the quality of work. Some Even bring serious loss, need a kind of automatic reminding shift changing device to prompt shift changing now. Contents of the invention [0003] The object of...

AI Technical Summary

Problems solved by technology

With the development of science and technology, most of the control of rotating machinery has been intelligentized, but it still requires relevant staff to control and process the relevant links. However, after a long working time, people are prone to fatigue, which will affect the quality of work. Some It may even cause serious losses, and now an automatic shift reminder device is needed to remind the shift change

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