CN103049068A - An intelligent timing multifunctional computer switch device - Google Patents

Abstract

The invention discloses an intelligent timing multifunctional computer switch machine device. Including: ATMEGA8 microcontroller, DS1302 clock module, infrared receiver module, USB to serial interface, power supply module and host computer control software. It realizes the setting of computer startup and shutdown time through the host computer software, and completes the function of timing startup and shutdown of the computer; through the host computer software and single-chip microcomputer, it can be matched with any infrared remote control to realize long-distance infrared remote control computer startup and shutdown; at the same time It can also be set to use the infrared remote control to complete the simple functions of the mouse and the PPT page turning function. The invention preferably solves the problem of starting and shutting down a short-distance computer, and has strong practicability, low cost and high reliability.

Description

An intelligent timing multifunctional computer switch device

technical field

The invention relates to a computer switching device, in particular to a device for realizing computer startup and shutdown through timing function, upper computer control software and infrared remote control.

Background technique

At present, computer power-on and restart buttons are generally fixed on the computer, and the computer must be operated at close range to realize the computer's startup and shutdown. But along with the substantial improvement of computer penetration rate, computer is widely used in aspects such as daily life, office, entertainment. The way people live and work is also constantly changing. People often need computers to be turned on and off in advance at a certain fixed moment, and the computer can be turned on and off at a long distance. For example, for computers used for work, office workers can automatically turn on the computer when they need to go to work, and can automatically turn off the computer when they are off work. The computer at home is far away from the computer when watching videos, and it is more troublesome to shut it down. It would be more convenient if it can be turned off remotely.

Contents of the invention

The purpose of the present invention is to provide a computer startup and shutdown device with timing function and remote infrared remote control, so as to facilitate the use of users.

The technical idea of the device of the present invention is: to supply power to the whole device through the USB, and at the same time, the USB is also used as a serial port of the computer for the upper computer control software to use. It communicates with the host computer control of the computer when it is turned on, and can set the time for the computer to shut down at regular intervals; it can also set the extended function of infrared remote control. When the computer is turned off, the computer is turned on at the pre-set time through the ATMEGA8 single-chip microcomputer.

The present invention is achieved in this way: the intelligent timing multifunctional computer switch machine device comprises: ATMEGA8 single-chip microcomputer, DS1302 clock module, infrared receiving module, USB to serial port interface, power supply module and host computer control software; Take ATMEGA8 single-chip microcomputer as the control core; DS1302 clock The module, the infrared receiving module, the USB-to-serial interface, the USB power supply module and the host computer control software are all connected to the ATMEGA8 single-chip microcomputer.

ATMEGA8 single-chip microcomputer: control the startup and shutdown of the computer, communicate with the host computer control software, receive and match infrared control signals and read the DS1302 real-time clock.

DS1302 clock module: provide the clock for timing the whole device.

Infrared receiving module: to realize long-distance control of computer startup and shutdown, and with self-learning function, suitable for any infrared remote control.

USB-to-serial port interface: Realize ATMEGA8 MCU communicates directly with the host computer control software through the USB interface, making the connection between the whole device and the computer simple, and only need to connect the device to the USB interface of the computer when using.

The ATMEGA8 single-chip microcomputer is connected with the peripheral circuit. The power supply module of the whole device has two ways of power supply: 1. The USB interface is used as the power supply for power supply; 2. When the USB interface cannot supply power, the spare battery is used as the backup power supply of the whole device.

PC control software: realize software shutdown by calling the system program; read the computer clock in real time after the computer is turned on, and calibrate the internal clock of DS1302; set the startup and shutdown time through the computer PC control software.

There is an additional self-setting expansion function in the upper control computer software: mouse function, PPT page turning function; the up, down, left and right buttons of the remote control can be set to control the direction of mouse cursor movement, and the left and right buttons of the mouse can be set. key and right button functions to complete some basic operations of the mouse, the host computer control software has a menu for setting the cursor moving speed and step value; use the infrared remote control to realize the page turning control of the PPT.

The invention preferably solves the problem of starting and shutting down a short-distance computer, and has strong practicability, low cost and high reliability.

Description of drawings

Fig. 1 is the overall structural block diagram of the present invention.

Fig. 2 is the general circuit schematic diagram of the present invention.

Fig. 3 is an interface diagram for controlling the power on and off and restart of the computer according to the implementation example of the present invention.

Fig. 4 is a clock circuit diagram of an embodiment of the present invention.

Fig. 5 is an infrared receiving circuit diagram of an embodiment of the present invention.

Fig. 6 is a circuit diagram of a USB-to-serial port in an embodiment of the present invention.

Fig. 7 is a communication circuit diagram of the upper computer of the embodiment of the present invention.

Marks in the figure: 100-USB to serial port circuit diagram; 101-USB interface; 102-CH341 chip; 103-backup battery; 200-interface circuit diagram for controlling computer power on and off and restart; 201-connection to computer motherboard power on and off and restart control interface; 202-ATMEGA8 microcontroller; 300-upper computer communication circuit diagram; 301-MAX232 serial communication chip; 400-clock circuit diagram; 401-DS1302 clock chip; 500-infrared receiving circuit diagram; 501-infrared receiving diode.

Detailed ways

Example:

As shown in Figure 1, the intelligent timing multifunctional computer switch device includes: ATMEGA8 single-chip microcomputer, DS1302 clock module, infrared receiving module, USB to serial port interface, power supply module and upper computer control software; with ATMEGA8 single-chip microcomputer as the control core; DS1302 clock module , infrared receiving module, USB to serial port interface, power supply module and host computer control software are all connected with ATMEGA8 single-chip microcomputer.

ATMEGA8 single-chip microcomputer 202 is connected with the peripheral circuit (see Figure 2). The power supply module of the whole device has two ways of power supply: 1. The USB interface 101 is used as the power supply; the computer uses an ATX power supply, and an auxiliary switching power supply is added to the ATX power supply, which can also provide 5V voltage in the shutdown state. At this time, the USB interface 101 chooses to use +5VSB; 2. When the USB interface 101 fails to supply power, use the backup battery 103 as the backup power for the whole device.

Figure 3 is an interface diagram for controlling computer power on and off and restart. Use the DuPont line to connect the mainboard pins of the computer mainboard switch and restart control interface 201 to the computer; by controlling the high and low levels of the ATMEGA8 single-chip microcomputer 202 I/O port, the computer is switched on and off and restarted.

As shown in Figure 4, the DS1302 clock chip 401 provides a timing clock for the entire device. Communicate with the ATMEGA8 single-chip microcomputer 202 through the IIC protocol; the ATMEGA8 single-chip microcomputer 202 reads and writes time to the internal register of the DS1302 clock chip 401; in the state of starting up, read the time of the computer through the host computer software, and read the time of the DS1302 clock chip 401 The time is calibrated so that it is synchronized with the computer's time.

As shown in Figure 5, the infrared receiving diode 501 receives infrared signals of any frequency band; the carrier frequencies in commonly used infrared remote controllers mainly include 38KHz and 40KHz; this embodiment adopts the waveform duplication method to realize infrared remote control when matching the received infrared remote control signals Signal carrier identification and waveform storage; each button of the remote control corresponds to a different frequency waveform, only need to receive the transmitted signal of the remote control through the infrared receiving tube, and store the electrically erasable programmable read-only in the ATMEGA8 single-chip microcomputer 202 In the memory (EEPROM), the ATMEGA8 microcontroller 202 recognizes the pressed key through waveform matching. This method is suitable for any remote control.

As shown in Figure 6, the USB-to-serial port interface adapter chip adopts CH341 chip 102; the CH341 chip 102 is cheap and does not need a driver; The connection between the device and the computer is simple, and the device only needs to be connected with the USB interface 101 of the computer during use.

As shown in Figure 7, the MAX232 serial port communication chip 301 is a dedicated communication chip, which connects the ATMEGA8 single-chip microcomputer 202 and the computer serial port, that is, the USB interface 101, to complete level conversion; the serial port is a USB-to-serial port interface.

Introduce in detail the working process of the device setting switch time and infrared control computer switch of the present invention below:

Shutdown at regular intervals in the power-on state: install the host computer software, and set the shutdown time directly to the ATMEGA8 single-chip microcomputer 202 through the host control computer software. The ATMEGA8 single-chip microcomputer 202 reads the DS1302 clock and compares it with the set shutdown time. After matching, the ATMEGA8 single-chip microcomputer 202 Send a shutdown signal to the host computer control software of the computer through serial port communication, and when the shutdown signal is detected, the host computer control software will call the shutdown program of the computer system to realize software shutdown.

Infrared remote control shutdown in the power-on state: Install the host computer control software, adjust the ATMEGA8 single-chip microcomputer 202 to work in the infrared recognition mode, in this mode, the first recognition is the power-on button by default, and the second recognition is the shutdown button. After the recognition is successful, the host computer control software will prompt to confirm the button, and the confirmation means that the button is set successfully. As long as the preset shutdown button is pressed, the ATMEGA8 MCU 202 will send a shutdown signal to the host computer control software of the computer after recognition. When the shutdown signal is detected, the host computer control software will call the shutdown program of the computer system to realize software shutdown. .

Timing start-up in shutdown state: Install the upper computer control software and set the start-up time. ATMEGA8 MCU 202 reads the clock of DS1302 clock chip 401 and compares it with the set shutdown time. After matching, ATMEGA8 MCU 202 will send a power-on signal to the computer mainboard switch and restart control interface 201, and realize computer shutdown through hardware. boot.

Infrared remote control power-on in the shutdown state: install the host computer control software, adjust the ATMEGA8 single-chip microcomputer 202 to make it work in the infrared recognition mode, set the power-on button, and store the waveform of the button. When a matching signal is received, the ATMEGA8 single-chip microcomputer 202 will Send a start-up signal to the switch and restart control interface 201 connected to the computer main board, and realize the computer start-up by means of hardware.

In the infrared recognition mode, additional functions can be set through the host computer control software: mouse function, PPT page turning function. The specific operation is as follows:

The direction of mouse movement is set in the self-setting expansion function option of the host computer control software: up, down, left, and right; by pressing the up, down, left, and right keys on the remote control, it is set to control the direction of mouse movement. The left button and right button functions of the mouse can also be set on the remote control. There are menus for setting cursor movement speed and step value in the host computer control software. In this way, the simple functions of the mouse can be completed with the infrared remote controller. In the additional function option of the host computer software, the infrared remote control can also be set as the PPT page turning control function.

Claims (2)

1. Intelligent fixed time multi-purpose computer power on/off device, it is characterized in that Intelligent fixed time multi-purpose computer power on/off device comprises: ATMEGA8 single-chip microcomputer, DS1302 clock module, infrared receiving module, USB turn serial interface, supply module and PC control software; Take the ATMEGA8 single-chip microcomputer as control core; It is that microprocessor links to each other with the ATMEGA8 single-chip microcomputer all that DS1302 clock module, infrared receiving module, USB turn serial interface, USB supply module and PC control software;

ATMEGA8 single-chip microcomputer: the startup and shutdown of control computer, communicate, receive and mate infrared control signal and read the DS1302 real-time clock with PC control software;

DS1302 clock module: whole device clock regularly is provided;

Infrared receiving module: realize the at a distance startup and shutdown of control computer, simultaneously with self-learning function, be applicable to any Infrared remote controller;

USB turns serial interface: realize the ATMEGA8 single-chip microcomputer directly by USB interface and PC control software communication so that whole device is connected with computer simply, during use only need this device be connected with the USB interface of computer get final product;

The ATMEGA8 single-chip microcomputer is that microcontroller is connected with peripheral circuit, and the supply module of whole device has the dual mode power supply: 1, USB interface is as the power supply of power supply; 2, can't power when USB interface, use reserve battery as whole device standby power supply;

PC control software: realize the software shutdown by the calling system program; The clock that reads computer that can also be real-time after booting computer is calibrated the internal clocking of DS1302; By the time of computer PC control software set startup and shutdown.

2. Intelligent fixed time multi-purpose computer power on/off device according to claim 1 is characterized in that being attached with in the described upper control machine software one from setting expanding function: mouse function, PPT page-turning function; The upper and lower, left and right button of energy setting remote controller comes the direction of the movement of mouse beacon cursor, sets left button and the right button function of mouse, finishes some basic operations of mouse, and the menu of setting cursor moving speed and step value is arranged in the PC control software; Realize the page turning control of PPT with Infrared remote controller.

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