Intelligent car window control system

Abstract

The utility model discloses an intelligent car window control system which comprises a microcontroller. The temperature and humidity control detector is connected with the microcontroller; wherein a serial clock input port and a bidirectional serial data port of the temperature and humidity control detector are respectively connected with an input port of the microcontroller; the motor driving board is connected with the microcontroller; wherein a motor forward rotation interface of the motor driving board is connected with an external interruption port of the microcontroller, and a motor reverse rotation interface of the motor driving board is connected with the external interruption port of the microcontroller; the mode selection module is connected with a timer port of the microcontroller; the nixie tube display module is connected with the output port of the microcontroller; the smoke sensing module is connected with the input port of the microcontroller; the intelligent car window control system provided by the utility model is simple in structure, and can control the lifting of the car window in time according to the temperature and humidity.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile intelligent control, and particularly relates to an intelligent window control system. Background Art

[0002] With the rapid development of my country's automotive industry in recent years, the automotive electronics market has also expanded rapidly, with the overall market growing at a rapid rate exceeding 40%. Body electronics account for 35% to 40% of all automotive electronics products. Currently, the top three applications for body electronics are window control, air conditioning, and lighting control. Within body electronics, the top three applications for semiconductor demand are: air conditioning, accounting for approximately 44%; window control, at approximately 22%; and lighting control, at approximately 10%. Power door control ranks fourth. According to data from a professional automotive electronics research company, demand for semiconductor devices for body electronics in the Chinese automotive market was approximately US$1.9 billion last year, with the proportion of domestically designed components in China ranging from approximately 10% to 15%. This proportion is expected to grow rapidly in the coming years. Therefore, window control has become a crucial component of body electronics.

[0003] With the increasing popularity of automobiles, people are paying more and more attention to vehicle safety. Automatic control of power windows has become a must-have feature in window control systems. Manually raising and lowering windows at high speeds can distract the driver and potentially lead to accidents. Therefore, automatic window adjustment is often used during high-speed driving.

[0004] This design adds a temperature sensor module to the window control system. The temperature inside and outside the car can be detected by the temperature sensor. The A / D conversion circuit then transmits the temperature data to the microcontroller. A new window control algorithm is used to control the window motor to intelligently raise and lower the window lifter, thereby improving the driver's comfort and safety during driving and further improving the safety performance of the window control system. Utility Model Content

[0005] The intelligent vehicle window control system provided by the utility model has a simple structure and can timely realize the lifting and lowering control of the vehicle windows according to the temperature and humidity.

[0006] The technical solution provided by this utility model is:

[0007] Microcontroller;

[0008] a temperature and humidity control detector connected to the microcontroller;

[0009] The serial clock input port and the bidirectional serial data port of the temperature and humidity control detector are respectively connected to the input port of the microcontroller;

[0010] a motor driver board connected to the microcontroller;

[0011] The motor forward interface of the motor drive board is connected to the external interrupt port of the microcontroller, and the motor reverse interface is connected to the external interrupt port of the microcontroller;

[0012] a mode selection module connected to a timer port of the microcontroller;

[0013] A digital tube display module connected to an output port of a microcontroller;

[0014] The smoke sensor module is connected to the input port of the microcontroller.

[0015] Preferably, the microcontroller uses AT89C51 single chip microcomputer as the minimum control unit, which has a simple structure and is safe and reliable.

[0016] Preferably, the temperature and humidity control detector adopts SHT11 temperature and humidity detector, which has high precision, low cost and simple interface.

[0017] Preferably, the digital tube display module realizes chip selection by connecting to an embedded decoder;

[0018] Among them, the embedded decoder adopts 74HC138 decoder, which has fast transmission and high performance.

[0019] Preferably, the smoke sensing module includes an analog smoke sensor and a digital-to-analog conversion chip;

[0020] Among them, the digital-to-analog conversion chip uses the AD0832 digital-to-analog conversion module.

[0021] Preferably, the start button of the mode selection module is connected to the timer external input of the microcontroller, and the manual / automatic selection mode is connected to the external data memory write strobe port WR of the microcontroller;

[0022] Preferably, the mode selection module further includes a vehicle window status indication circuit, wherein the vehicle window status indication circuit is provided with a light emitting diode connected to the external data memory write enable port RD of the microcontroller.

[0023] The beneficial effects of the utility model are:

[0024] The intelligent vehicle window control system provided by the utility model has a simple structure and can timely realize the lifting and lowering control of the vehicle windows according to the temperature and humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a circuit simulation diagram of the intelligent window control system described in this utility model. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] like Figure 1 As shown, the intelligent window control system provided by the present invention has a simple structure and can timely realize the lifting and lowering control of the window according to the temperature and humidity. It includes: a microcontroller, which adopts the AT89C51 single-chip microcomputer as the minimum control unit; a temperature and humidity control detector adopts the SHT11 temperature and humidity detector, which is connected to the microcontroller; wherein the serial clock input port and the bidirectional serial data port of the temperature and humidity control detector are respectively connected to the microcontroller P1.0 and P1.1 input ports; a motor drive board, which is connected to the microcontroller; wherein the motor forward interface IN1 of the motor drive board is connected to the microcontroller external interrupt INT0 port, and the motor reverse interface IN2 is connected to the microcontroller external interrupt INT1 port; a mode selection module, which is connected to the timer port of the microcontroller; a digital tube display module, which is connected to the microcontroller output port; a smoke sensor module, which is connected to the microcontroller input port;

[0028] The digital tube display module uses an embedded decoder for chip selection; the embedded decoder uses a 74HC138. The 74HC138 is a high-speed CMOS device that is pin-compatible with low-power Schottky diodes. The 74HC138 decoder accepts a 3-bit binary-weighted address input and, when enabled, provides eight mutually exclusive active-low outputs. Connecting digital tubes allows the temperature, humidity, and smoke index to be displayed on the digital tubes.

[0029] The smoke sensor module includes an analog smoke sensor and a digital-to-analog conversion chip. The ADC0832 is an 8-bit, dual-channel A / D converter. The ADC0832 is compact, highly compatible, and cost-effective. It converts the analog smoke sensor signal into a digital signal, which is then compiled and transmitted to the microcontroller for display.

[0030] The mode selection module's on button is connected to the microcontroller's timer external input, and the manual / automatic mode selection module is connected to the microcontroller's external data memory write strobe port WR. Manual mode directly controls the window opening and closing via the button. Automatic mode closes the window in rain and opens if there's excessive smoke (>15°C) or humidity (>80°C) in the absence of rain; otherwise, it closes. An external light-emitting diode (LED) is connected to the microcontroller's external data memory write strobe port RD to indicate the window status.

[0031] The intelligent vehicle window control system provided by the utility model has a simple structure and can timely realize the lifting and lowering control of the vehicle windows according to the temperature and humidity.

[0032] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An intelligent window control system, characterized in that: include: Microcontroller; a temperature and humidity control detector connected to the microcontroller; The serial clock input port and the bidirectional serial data port of the temperature and humidity control detector are respectively connected to the input port of the microcontroller; a motor driver board connected to the microcontroller; Among them, the motor forward interface of the motor driver board is connected to the external interrupt port of the microcontroller, and the motor reverse interface = is connected to the external interrupt port of the microcontroller; a mode selection module connected to a timer port of the microcontroller; A digital tube display module connected to an output port of a microcontroller; The smoke sensor module is connected to the input port of the microcontroller.

2. The intelligent window control system according to claim 1, characterized in that: The microcontroller adopts AT89C51 single chip microcomputer as the minimum control unit.

3. The intelligent window control system according to claim 1, characterized in that: The temperature and humidity control detector adopts SHT11 temperature and humidity detector.

4. The intelligent window control system according to claim 1, characterized in that: The digital tube display module realizes chip selection by connecting to the embedded decoder; Among them, the embedded decoder uses 74HC138 decoder.

5. The intelligent window control system according to claim 1, characterized in that: The smoke sensing module includes an analog smoke sensor and a digital-to-analog conversion chip; Among them, the digital-to-analog conversion chip uses the AD0832 digital-to-analog conversion module.

6. The intelligent window control system according to claim 1, characterized in that: The start button of the mode selection module is connected to the external input of the timer of the microcontroller, and the manual / automatic selection mode is connected to the external data memory write enable port WR of the microcontroller.

7. The intelligent window control system according to claim 1 or 6, characterized in that: The mode selection module further comprises a vehicle window status indication circuit, wherein the vehicle window status indication circuit is provided with a light emitting diode connected to the external data memory write enable port RD of the microcontroller.

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