Controller special for non-negative pressure device

Abstract

The invention provides a controller special for a non-negative pressure device. The controller is composed of a digital quantity acquisition unit, a fault acquisition unit, an analog quantity acquisition unit, a temperature acquisition unit, a relay output unit, a fault output unit, a voice alarm output unit, an analog quantity output unit, a CPU, a communication interface unit, a peripheral communication unit and a device information unit. The device information unit is connected with the CPU through the digital quantity acquisition unit, the fault acquisition unit, the analog quantity acquisition unit and the temperate acquisition unit, and is respectively connected with the relay output unit, the fault output unit, the voice alarm output unit and the analog quantity output unit through the CPU, and is finally connected with a peripheral execution unit through gathering. The advantages are as follows: a modularization integration design is adopted so that the cost and the system space can be saved, and the integration of the voice alarm unit and the communication interface unit can realize good on-site monitoring and data sharing, providing convenience for system maintenance.

Description

1. Technical field [0001] The invention relates to a controller, in particular to a special controller for non-negative pressure equipment. 2. Background technology [0002] At present, the controllers of non-negative pressure equipment often use various PLC controllers. In most cases, it is necessary to expand the system by adding expansion modules, which increases the space occupied by the system and increases the cost. Although a few individual controllers can also It meets the needs, but there is no voice alarm and communication interface. After the equipment fails, it can only rely on manual inspection on site, and it cannot be unattended. 3. Contents of the invention [0003] In view of the deficiencies in the prior art above, the present invention provides a dedicated controller for non-negative pressure equipment, which can achieve the effects of reliable operation, integrated control and unattended operation. [0004] The technical solution adopted by the present...

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Problems solved by technology

[0002] At present, the controllers of non-negative pressure equipment often use various PLC controllers. In most cases, it is necessary to expand the system by adding expansion modules, which increases the space occupied by the system and increases the cost. Although a few individual controllers can also It meets the needs, but there is no voice alarm and communication interface. After the equipment fails, it can only be checked manually on site, and it cannot be unattended.

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