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Control device of variable-frequency air compressor

A technology of air compressors and control devices, which is applied in the direction of program control devices, program loading/starting, etc., which can solve the problems of high price, high cost performance, cumbersome software upgrades, etc., and achieve the effect of low cost

Inactive Publication Date: 2013-11-20
NINGBO MOBO COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not necessary to disassemble or replace the controller to add or subtract special function applications in its control core software; the disadvantage is: the price is more expensive than the dedicated controller, and it is not as good as the dedicated controller is the hardware designed for the interface required by the device itself
Serious waste
The advantages of the dedicated controller are: high cost performance, and the control input and output interfaces are highly targeted; the disadvantages are: the software upgrade is cumbersome and requires professional operation

Method used

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  • Control device of variable-frequency air compressor

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] refer to figure 1 , a control device for an inverter air compressor, comprising:

[0013] One upper computer 1, is used for installing the download software written by VB program, this upper computer 1 has the serial port 2 that adopts MODBUS RTU protocol to transmit data;

[0014] A lower computer 3, the lower computer 3 has a 485 interface 4, the lower computer 3 communicates with the serial port 2 of the upper computer through the 485 interface 4, and the lower computer 3 is embedded with a BOOT application program for initializing peripherals.

[0015] When the system is powered on, first execute the BOOT application program, initialize the necessary peripherals, and open the 485 interface 4 to wait for receiving the host computer program. If an update program command is detected, the update command is executed and the cu...

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Abstract

The invention discloses a control device of a variable-frequency air compressor. The control device comprises an upper computer and a lower computer; the upper computer is used for installing download software written by a VB (visual basic) program and is provided with a serial port which transmits data by the aid of a MODBUSRTU protocol; the lower computer is provided with a 485 interface and is in communication connection with the serial port of the upper computer via the 485 interface, and a BOOT application program used for initializing a peripheral is embedded in the lower computer. The control device has the advantages that the lower computer can automatically response to operation of the upper computer without being operated by operators, and a current state can be displayed on a display interface of the lower computer; the control device is a non-universal controller and accordingly is low in cost.

Description

technical field [0001] The invention relates to a control device for a variable frequency air compressor. Background technique [0002] With the rapid development of the industrial control industry, air compressors have become one of the indispensable professional equipment in all walks of life. The variable frequency air compressor has been gradually accepted by many manufacturers because of its effect on energy saving and emission reduction. The control part of the frequency conversion air compressor is basically divided into two categories: one is to use a general-purpose controller (such as PLC plus display text) as the control core of the frequency conversion air compressor, and the other is to use a special controller (such as a single-chip system ) as the control core of the frequency conversion air compressor. [0003] The two types of applications have their own advantages and disadvantages. The advantages of the general-purpose controller are: the modular structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
Inventor 谢海龙金国锋
Owner NINGBO MOBO COMPRESSOR