Control device of domestic intelligent electric control fan heater
A technology of intelligent control and control devices, applied in lighting and heating equipment, fluid heaters, etc., can solve the problems affecting the overall performance of the heater, complex control circuit structure, and low control accuracy, and achieve perfect human-computer interaction and control accuracy High, simple circuit structure effect
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Embodiment 1
[0014] like figure 1 As shown, the household intelligent electric control heater control device comprises: an intelligent control chip 4, the intelligent control chip 4 is connected to the key input circuit 1, the indoor temperature acquisition circuit 2, and the internal temperature acquisition circuit 3; Intelligent control chip 4 connects voice alarm circuit 5, liquid crystal display circuit 15; Described intelligent control chip 4 is respectively connected with fan motor drive circuit 7, heating element control circuit 10,13 by photoelectric isolation circuit 6,9,12; The fan motor drive circuit 7 is connected to the fan motor 8; the heating element control circuit 10 is connected to the heating element (1) 11; the heating element control circuit 13 is connected to the heating element (2) 14.
Embodiment 2
[0016] In the household intelligent electric heater control device, the single-chip microcomputer adopts AT89C51, the indoor temperature acquisition circuit and the internal temperature acquisition circuit both adopt DS18B20 digital temperature sensor, and the liquid crystal display circuit adopts LCD1602 liquid crystal display module , The voice alarm circuit adopts ISD1420 voice chip.
[0017] exist figure 2 In the shown embodiment, two DS18B20 digital temperature sensors are respectively connected to the P1.0 and P1.1 pins of the microcontroller AT89C51, and the collected indoor and machine temperatures are stored in the RAM of the microcontroller, and compared with the preset The temperature is compared, and the voice chip ISD1420 alarm prompts if the limit is exceeded. The indoor temperature is displayed in real time by the LCD1602 liquid crystal display module.
Embodiment 3
[0019] exist image 3 In the shown embodiment, the P1.2 and P1.3 pins of the microcontroller AT89C51 control the DC motor drive chip L298 through the photoelectric isolation chip TLP521-4, and the L298 drives the DC motor to realize the rotation of the fan motor. The P1.4 and P1.5 pins of the microcontroller AT89C51 control the opening and closing of the transistors Q1 and Q2 through the photoelectric isolation chip TLP521-4, and then control the relays K1 and K2 to complete the connection of the heating element PTC (1) and the heating element PTC (2). On and off.
[0020] The working process of the patent of the present invention mainly includes three stages: the stage of sending cold air only when starting up. As long as it is turned on, no matter what the working state of the system is, the fan motor must supply air to prevent damage to components caused by dry burning.
[0021] Low heat air supply working stage. Use the buttons to set the temperature, while maintaining ...
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