Variable-frequency fan controller with wireless transmission function

Abstract

The invention discloses a variable-frequency fan controller with a wireless transmission function. The variable-frequency fan controller comprises a micro control module, wherein a master processing module and a slave processing module are arranged in the micro control module, and the master processing module is connected with the slave processing module by means of an Ethernet module in an SPI communication mode; the master processing module is connected with an input-display joint module, an external storage EEPROM module, a power module, a clock reset module, a JATG module, a relay and a watchdog / reset circuit; and the slave processing module is accessed to a wireless access point and is connected with a variable-frequency fan driving module, the variable-frequency fan driving module is connected with a variable-frequency controller, and the variable-frequency controller is connected with a variable-frequency fan in an air conditioning system. The variable-frequency fan controller disclosed by the invention can complete the adjustment on the variable-frequency fan in the air conditioning system by utilizing features of the one-dimensional fuzzy controller and the two-dimensional fuzzy controller under different environmental requirements, and can realize the control over the variable-frequency fan in a wireless manner.

Description

technical field [0001] The invention belongs to the technical field of control equipment for air conditioning systems, and in particular relates to a frequency conversion fan controller with wireless transmission function. Background technique [0002] General air-conditioning systems usually use two methods to maintain the required indoor temperature and humidity: one is to fix the air supply volume and change the supply air temperature; the other is to fix the supply air temperature and change the air volume sent into the room ; The latter is called variable air volume air conditioning system (Variable air volume system). At present, aiming at the research of the control loop in the variable air volume air conditioning system (VAV), a fuzzy adaptive control algorithm is proposed. [0003] In recent years, in terms of air conditioning and refrigeration, compared with other refrigeration technologies, variable air volume air conditioning and refrigeration technology can mai...

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Problems solved by technology

[0004] However, due to the non-linear, time-varying and load-changing conditions of the variable air volume air-conditioning system (VAV), the conventional PID control method, that is, "proportional first, then integral, and final differential" is insufficient in overshoot performance.

In fuzzy control, the higher the dimension of the controller, the better the control accuracy. However, since there are many controlled objects of the variable frequency fan, the use of multi-dimensional fuzzy controller will increase the complexity, and the difficulty of the algorithm and the accuracy of the simulation results will vary with each other. In order to realize the effective self-adaptive control of the frequency conversion fan, the use of intelligent methods for effective adjustment becomes an important part of the variable air volume air conditioning system (VAV).

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