CN101477742B - Computer room unified shutdown device and control method thereof - Google Patents

Abstract

The invention discloses a device for a simultaneous shutdown of all computers in a computer room, and a method for controlling the device. The device provided by the invention comprises a wireless reception shutdown circuit and a wireless remote controller, wherein, the wireless reception shutdown circuit comprises a controller, a power supply detection circuit, a storage chip, a wireless reception module, a learning indicator light, a learning switch, a photocoupler, a digital analog switch, a first contact pin, a second contact pin, a third contact pin and a resistor. The method provided bythe invention is characterized in that the wireless code transmission method is adopted for closing all the computers through POWER ON contact pins on main boards of the computers. Compared with the closing of desktop computers by a network, the invention is more flexible, and has the advantages of convenient use, and great use value and social benefit.

Description

Computer room unified shutdown device and control method thereof

technical field

The invention relates to a computer shutdown device and method, in particular to a computer room unified shutdown device and a control method thereof.

Background technique

At present, many students or students in the computer room of schools and training units leave the computer room without shutting down the computer after using the computer room. The personnel can’t do it. At this time, the computer room managers and teachers or teachers can only shut down the computers. It’s okay to shut down the computers that are not shut down through the server. If there is no computer room that realizes network management, you must go to each computer that is not shut down. Shutting down the computer normally adds a lot of time for the computer room managers, so many computer room managers directly turn off the main power supply (main power switch) in order to save trouble. For a long time, they directly turn off the main power supply without shutting down the computer, which will cause great damage to the computer hardware. , especially computer hard drives.

Contents of the invention

The technical problem to be solved by the present invention is to propose a computer room unified shutdown device and its control method in view of the defects existing in the prior art.

The computer room unified shutdown device of the present invention includes a wireless receiving shutdown circuit and a wireless remote controller, wherein the wireless receiving shutdown circuit is composed of a controller, a power detection circuit, a storage chip, a wireless receiving module, a learning indicator light, a learning switch, a photoelectric coupler, a digital Analog switch, the first pin, the second pin, the third pin and a resistor, the output terminal of the first pin is connected to the input terminal of the photocoupler, and the positive output terminal of the photocoupler is connected to one end of the resistor R and the control The other end of the resistor R is connected to the standby power supply +5VSB of the computer ATX power supply, the negative output end of the photocoupler is grounded, the input end of the controller is electrically connected with the power detection circuit, the wireless receiving module, and the learning switch respectively, and the controller The output terminals of 1 are electrically connected with the learning indicator light and the digital analog switch respectively, the controller 1 is connected with the memory chip 3 in the form of a bus, the digital analog switch is electrically connected with the second pin and the third pin respectively, and the wireless remote controller is connected with the wireless The receiving module is connected wirelessly.

The control method of the unified shutdown device in the computer room is characterized in that each computer is equipped with the unified shutdown device, and the control method specifically includes the following steps:

a.) Use the wireless receiving module to receive the public key sent by the wireless remote control and output the public key to the controller;

b.) After the controller receives the shutdown signal of the computer, that is, the public key, it judges whether the current computer is in standby;

c.) When the computer is in standby mode, the ACPI LED S3 standby indicator on the main board is sent to the controller through the first pin and the photocoupler in sequence. When the computer is in standby mode, the photocoupler outputs a low level to the controller, otherwise the photocoupler Output high level to the controller;

d.) When the controller detects that the output of the optocoupler is low level, the controller turns on the computer through the digital analog switch (9), and the controller turns off the computer through the digital analog switch after a delay of one minute;

e.) When the controller detects that the output of the photocoupler is at a high level, it detects the +5V voltage of the computer power supply ATX;

f.) When the +5V output voltage is detected, the controller turns off the computer through the digital analog switch;

g.) When the +5V output voltage is not detected, the controller will not shut down;

h.) After the controller turns off the computer through the digital analog switch, the controller still detects the +5V output voltage after a delay of 3 minutes, indicating that the computer cannot be shut down normally, and the controller will forcefully turn off the computer through the digital analog switch.

The invention is more flexible than shutting down the desktop computer through the network, is convenient to use, and has great use value and social significance.

Description of drawings

Fig. 1 is a shutdown device circuit connection diagram of the present invention;

Fig. 2 is an external structural diagram of the wireless remote controller 12 carried around in Fig. 1;

FIG. 3 is an external structure diagram of the wireless remote controller 12 installed near the main power switch of the computer room in FIG. 1 .

Detailed ways

As shown in Figure 1. The computer room unified shutdown device includes a wireless receiving shutdown circuit 111 and a wireless remote controller 12, wherein the wireless receiving shutdown circuit 111 is composed of a controller 1, a power detection circuit 2, a memory chip 3, a wireless receiving module 4, a learning indicator light 5, and a learning switch. 6. The photocoupler 7, the digital analog switch 9, the first pin 8, the second pin 10, the third pin 11 and the resistor R, the output terminal of the first pin 8 is connected to the input terminal of the photocoupler 7 , the positive output terminal of the photocoupler 7 is connected to one end of the resistor R and the input terminal of the controller 1, the other end of the resistor R is connected to the computer ATX power supply +5VSB, the negative output terminal of the photocoupler 7 is grounded, and the controller 1’s The input end is electrically connected with the power detection circuit 2, the wireless receiving module 4, and the learning switch 6 respectively, and the output end of the controller 1 is electrically connected with the learning indicator light 5 and the digital analog switch 9 respectively, and the controller 1 is connected with the memory chip 3 in a bus mode connection, the digital analog switch 9 is electrically connected to the second pin 10 and the third pin 11 respectively, and the wireless receiving module 4 is connected to the wireless remote controller 12 wirelessly.

The required working power in the wireless receiving shutdown circuit 111 is provided by the computer ATX power supply standby power+5VSB.

The controller 1 is used for processing and storing the wireless coded signal of the wireless remote controller 12, detecting and judging the working state of the computer, and completing corresponding execution tasks. It is composed of a single-chip microcomputer, program memory, data memory, input interface, output interface, and output driving circuit.

The power detection circuit 2 is used for the controller 1 to detect the +5V power supply of the computer ATX power supply. When the +5V power supply exists, it means that the computer is in a fully running state, and if the +5V power supply does not exist, it means that the computer ATX power supply is on standby, that is, the computer is in a shutdown or sleep or standby state .

Memory chip 3 is used for depositing public key (universal password, namely every machine identical password) and private key (corresponding to this machine is a password) password, is an EEPOM memory chip.

The wireless receiving module 4 is used to receive the wireless coded signal from the wireless remote controller 12 and send it to the controller 1 for processing.

The learning switch 6 is used by the controller 1 to learn the public key and individual key wireless codes of the wireless remote controller 12. The key is used to open the control, and the other "0" and "1" are used for public key learning, which is still a key learning.

The learning indicator light 5 is used for the controller 1 to indicate the wireless code learning of the public key and the individual key. It is composed of two-color light-emitting diode LEDs. Controller 1 judges whether it is the key configuration learning, or the switch position learning position of the key opening control. When the learning indicator light 5 corresponds to the public key or the individual key, the light is on. If the learning is successful, the user puts the learning switch 6 back to the key opening control position.

Pin 8 is used to connect the ACPI LED S3 standby indicator on the main board through a connection, and the signal of the S3 standby indicator is transmitted to the positive and negative poles of the photodiode of the optocoupler 7 through the connection between pin 8 and the photocoupler 7 .

The photocoupler 7 is used to transmit the ACPI LED S3 standby indicator light on the main board to the controller 1. The S3 standby indicator light is on when the computer is in standby, and it is usually off. When the controller 1 detects that the output of the photocoupler 7 is "0", it means The computer is in standby mode. When the wireless remote controller 12 remotely shuts down the computer, after the controller 1 turns on the computer through the digital analog switch 9, the delay is one minute. The information will not be lost. When the S3 standby signal indicator (sampling point) cannot be found on the main board, the user should turn off the computer standby function through the power management of the operating system.

Pin 10 is used to connect the start line (POWER ON) of the power button on the computer panel, and move the start line (POWER ON) of the power button on the computer panel to the shutdown device circuit.

Pin 11 is used to connect the power supply (POWER ON) start-up pin on the computer main board, and is used for the power-on button on the controller 1 and the computer panel to manage the computer on and off by the power supply (POWER ON) start-up pin on the computer main board respectively.

The digital analog switch 9 is used to turn on and off the computer, which is equivalent to the function of the power button on the computer panel. In this example, CD4066 is used as the digital analog switch, and the control terminal is connected to the controller 1.

The wireless remote controller 12 is used for wireless password key transmission. The external structure of the portable wireless remote controller 12 is shown as 121 in FIG.

As shown in Figure 2, it is the external structure diagram of the wireless remote controller 12 that is carried around in Figure 1. There is a shutdown button on the surface, and its interior is composed of an encoding circuit and a wireless transmission circuit. Shut down all safely.

As shown in Figure 3, it is an external structure diagram of the wireless remote controller 12 installed near the main switch of the computer room in Figure 1. In addition to the unified shutdown button "off", there are also numeric keys 0 to 9, a cancel key, a confirmation key, and display section. Its interior is composed of encoding circuit, keyboard circuit, display circuit and wireless transmission circuit. When pressing the start-off button "OFF", all unclosed computers in the room will be shut down safely, and when the number key is pressed and then the confirmation key is pressed, the unclosed computers corresponding to the numerical value will be safely shut down. The cancel key is used to modify the numerical value before pressing the confirm key.

Claims (2)

1. uniform closedown device for computer room, it is characterized in that comprising wireless receiving shutdown circuit (111) and Digiplex (12), wherein wireless receiving shutdown circuit (111) is by controller (1), power sense circuit (2), storage chip (3), wireless receiving module (4), study pilot lamp (5), learn switch (6), photoelectrical coupler (7), digital simulation switch (9), first contact pin (8), second contact pin (10), the 3rd contact pin (11) and resistance (R) are formed, the input end of the output termination photoelectrical coupler (7) of first contact pin (8), the end of the positive output end connecting resistance R of photoelectrical coupler (7) and controller (1) input end, the other end of resistance R is received computer ATX electric power standby power+5VSB, the negative output terminal ground connection of photoelectrical coupler (7), the input end of controller (1) respectively with power sense circuit (2), wireless receiving module (4), learn switch (6) is electrically connected, the output terminal of controller (1) respectively with study pilot lamp (5), digital simulation switch (9) is electrically connected, controller (1) is connected with storage chip (3) with bus mode, digital simulation switch (9) respectively with second contact pin (10), the 3rd contact pin (11) is electrically connected, wireless receiving module (4) and Digiplex (12) wireless connections.

2. control method based on the described uniform closedown device for computer room of claim 1 is characterized in that each computing machine all installs described unified shutdown unit, and described control method specifically comprises the steps:

A.) adopt wireless receiving module (4) to receive public spoon that Digiplex (12) sends and spoon export public affairs to controller (1);

B.) after controller (1) receives the promptly public spoon of this computer shutdown signal, judge whether current computer is in standby;

C.) when the computing machine standby, ACPI LED S3 standby indicating lamp on the mainboard is delivered to controller (1) by first contact pin (8), photoelectrical coupler (7) successively, photoelectrical coupler during the computing machine standby (7) output low level is to controller (1), otherwise photoelectrical coupler (7) output high level is to controller (1);

D.) detect photoelectrical coupler (7) when being output as low level when controller (1), controller (1) is opened computing machine by digital simulation switch (9), delay time one minute clock controller (1) shut down computer by digital simulation switch (9);

E.) detect photoelectrical coupler (7) when being output as high level when controller (1), carry out computer operation power supply ATX+the 5V voltage detecting;

F.) when detecting+the 5V output voltage, controller (1) is shut down computer by digital simulation switch (9);

G.) when not detecting+the 5V output voltage, controller (1) does not carry out power-off operation;

H.) after controller (1) is shut down computer by digital simulation switch (9), delay time 3 minutes clock controller (1) also detect+the 5V output voltage, illustrate that computing machine can not normal shutdown, controller (1) will be shut down computer by force by digital simulation switch (9).

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