Air conditioner controller of coach

Abstract

The invention relates to an air conditioner controller of a coach, comprising a display plate and a driving plate, wherein the display plate is arranged in a cab; the driving plate is arranged on a roof; the display plate comprises a core single chip microcomputer, a key input circuit, an alarm output circuit, a display circuit and a bus interface module; the driving plate comprises a core singlechip microcomputer, a current detection circuit, a switch circuit, an induction circuit, a speed regulation circuit and the bus interface module, wherein the switch circuit is connected with each switch in a control mode, the speed regulation circuit is used for controlling the wind speed of a condenser blower and an evaporator blower of an air conditioner, and the induction circuit is connected to the output ends of a temperature sensor, a defrosting sensor, a low-voltage alarming switch and a high-voltage alarming switch; and the display plate is connected with the driving plate in a communicating way through the bus interface module. The invention avoids the complex connection brought by adopting a large quantity of cables, has more reliable control and can realize the connection between the controller and a bus control system of the coach in a bus control way so as to realize the centralized control.

Description

technical field [0001] The invention relates to a controller, in particular to an air conditioner controller used in passenger cars. Background technique [0002] A current passenger car air-conditioning controller is composed of three panels: a display operation panel, a relay driver panel, and a relay output panel. The display operation board and the relay driver board are generally installed in the cab, and the relay output board is installed on the roof. In this way, a lot of wires are needed to be connected between the relay driver and the relay output. The reliability is poor, and a large number of wires are required to connect, and the cost is high. At the same time, maintenance is more complicated. And this design can't be connected with the bus of the car, can't realize the centralized control of the whole car. [0003] Moreover, the existing controller adopts a resistance voltage divider adjustment circuit to adjust the wind speed of the condensing fan and the ev...

AI Technical Summary

Problems solved by technology

The display operation board and the relay driver board are generally installed in the cab, and the relay output board is installed on the roof. In this way, a lot of wires are needed to be connected between the relay driver and the relay output. The reliability is poor, and a large number of wires are required to connect, and the cost is high. At the same time, maintenance is more cumbersome

And this design cannot be connected with the bus of the car, and it cannot realize the centralized control of the whole car

[0003] Moreover, the existing controller adopts a resistor divider regulator circuit to adjust the wind speed of the condensing fan and the evaporating fan. This kind of series resistor adjustment requires power consumption, which causes energy waste and generates a large amount of heat. Space for heat dissipation, and can only realize speed regulation with limited gears, stepless speed regulation is not possible

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