A power delay device for engineering machinery

Abstract

The invention discloses a power supply delay device for engineering machinery and belongs to the field of electronic techniques. The delay device comprises an engineering machinery power supply start and stop unit, a delay unit, a power supply switch unit and a power supply, wherein the delay unit comprises a delay unit power supply, a delay circuit and an electronic switch, and the delay circuit is connected with the delay unit power supply and the electronic switch; the engineering machinery power supply start and stop unit is connected with the power supply switch unit through the electronic switch; and the power supply is connected to the power supply switch unit. According to the power supply delay device, the delay unit is arranged in the circuit, when a capacitor is charged to a preset voltage value, the electronic switch is turned on, and a circuit of the power supply switch unit is switched on, so that the purpose of power supply delay is achieved, the circuit design is simple, the cost is low, and the service life is long.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power delay device for engineering machinery. Background technique [0002] At present, in the control equipment in the automation field of my country's construction machinery industry, most of the control systems that require delay control use mechanical timing units or digital timing units. Especially the digital timing unit composed of single-chip microcomputer or programmable controller is widely used in various precise timing control because of its precise timing and convenient setting of timing time. However, some long-time delay mechanical timing units or digital timing units are more suitable for long-time delay control that requires high timing precision due to their complex structure and high cost. It is not economical and unnecessary in the long-time delay control where the precision is not very high. In order to achieve the setting of power supply or electroni...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex design, many components and poor reliability of the current delay circuit, a power delay device for construction machinery is now provided

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