Operation environment pre-warning device

Abstract

The invention discloses an operation environment pre-warning device. The operation environment pre-warning device comprises a smoke signal acquisition circuit, a frequency division push-pull circuit and a filter output circuit, wherein the smoke signal acquisition circuit selects an LB-70C smoke signal acquisition device J1 to acquire smoke signals of factory operation environment; the frequency division push-pull circuit receives the smoke signals in two paths so as to acquire circuit output signals; in one path, an inductor L1, a resistor R7 and a capacitor C4 are utilized to form a composite circuit so as to filter high-frequency noise in the signals; in the other path, a triode Q1, a resistor R8 and a capacitor C2 are utilized to form a delay circuit so as to delay the signals, a triode Q6and a capacitor C3 are utilized to filter low-frequency noise in the signals, and a triode Q4, a triode Q5 and a capacitor C5 are utilized to form a switch circuit so as to detect the signals; andfinally, the filter output circuit utilizes a resistor R19, a resistor R20, a capacitor C6 and a capacitor C7 to form an RC circuit so as to carry out filter and output in sequence. According to theoperation environment pre-warning device, abnormal signals can be sent to a remote control terminal through a signal emitter E1 and an operation environment pre-warning module can be triggered to workand give an alarm.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an early warning device for working environment. Background technique [0002] The 21st century is an era of knowledge economy characterized by "informatization", which involves all walks of life, and the information in the bidding and procurement process is also processed by "informatization". At present, the safety of the factory's operating environment is a problem that every factory must pay attention to , especially for factories containing smoke and dust, not only fire prevention must be achieved, but also for the safety of workers, the working environment of the factory must be monitored in real time by means of information technology. At the same time, due to the large amount of electromagnetic interference in the factory, the signal often appears frequency hopping and distortion This phenomenon leads to large errors in the monitoring of the working environment, which se...

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Problems solved by technology

[0002] The 21st century is an era of knowledge economy characterized by "informatization", which involves all walks of life, and the information in the bidding and procurement process is also processed by "informatization". At present, the safety of the factory's operating environment is a problem that every factory must pay attention to , especially for factories containing smoke and dust, not only fire prevention must be achieved, but also for the safety of workers, the working environment of the factory must be monitored in real time by means of information technology. At the same time, due to the large amount of electromagnetic interference in the factory, the signal often appears frequency hopping and distortion This phenomenon leads to large errors in the monitoring of the working environment, which seriously threatens the safety of workers and the efficiency of the factory.

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