Free monitoring point increase and decrease direct digital controller

Abstract

The invention provides a free monitoring point increase and decrease direct digital controller, which comprises power modules with different powers, microprocessor modules with different processing speeds, an identical single-way analog quantity digital value input module, an identical single-way analog quantity digital value output module, a man-machine interface and an expansion module, wherein the microprocessor modules are in plug-in connection with the power supply modules by connecting point terminals and in plug-in connection with both the single-way analog quantity digital value input module and the single-way analog quantity digital value output module. The controller has the advantages that: the structure is modularized, point redundancy is avoided, and the costs of all links including purchase, storage, production, finished product, sale, after-sales service, installation, debugging, maintenance and the like are reduced; electronic waste is reduced, which contributes to environmental protection; and the large-scale production and operation are convenient. The controller can perform in-situ display control, network communication and expansion control and can also perform configuration monitoring in a control controller. The controller can be widely used in various fields requiring complex control, such as intelligent buildings, industrial control, automobiles, ships and aviation.

Description

Technical field [0001] The invention relates to a direct digital controller, in particular a direct digital controller with free increase and decrease of monitoring points, which can be widely used in various occasions requiring complicated step control such as intelligent buildings, industrial control, automobiles, ships, and aviation. Background technique [0002] The general direct digital controller DDC, input AI, input DI, output AO, output DO are on the same printed board PCB as the single-chip microcomputer. Due to the different monitoring points of field equipment, many kinds of printed board PCBs are required, so A large amount of printed board PCB inventory is required, which increases the cost of inventory management; if there is no inventory, the processing cycle will be long; in the actual application process, due to the appearance and circuit design characteristics, input AI, input DI and output AO, The output DO is fixed and unchangeable when leaving the factory. D...

AI Technical Summary

Problems solved by technology

[0002] The general direct digital controller DDC, the input AI, input DI, output AO, output DO are all on the same printed board PCB as the single chip microcomputer, and many kinds of printed board PCBs are required due to the different number of on-site equipment monitoring points, so A large amount of printed board PCB inventory is required, which increases the cost of inventory management; if no inventory is prepared, the processing cycle will be long; in the actual application process, due to the design characteristics of the appearance and circuit, input AI, input DI and output AO, The output DO is fixed and cannot be changed when it leaves the factory. Due to the negligence of the engineering personnel, the control method of the control object is often changed after the goods arrive at the site, which cannot be changed on site. In this way, the controller input AI, input DI, output AO, and output DO points Must be equal to or greater than the actual number of points used, so a lot of points are wasted, the cost is high, and it will inevitably become electronic waste in the long run; if the control point is increased, the product needs to be replaced or returned, which will involve issues such as business and supply cycle; when One line of input AO, output DO or output AO, output DO is faulty, all lines need to be removed and taken to the factory for maintenance, which is inefficient and error-prone

More importantly, due to the variety of varieties in the production process, the efficiency of procurement, production, and finished product sales, installation, and commissioning is very low, with low productivity and high overall costs.

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