CN201527620U

CN201527620U - Automatic power supply shutoff device in shutdown of computer

Info

Publication number: CN201527620U
Application number: CN200920314777XU
Authority: CN
Inventors: 何梓聪; 卢煜杰; 李逸康
Original assignee: Jiangmen No1 High School
Current assignee: Jiangmen No1 High School
Priority date: 2009-11-14
Filing date: 2009-11-14
Publication date: 2010-07-14
Anticipated expiration: 2019-11-14

Abstract

The utility model discloses an automatic power supply shutoff device in shutdown of a computer. The device comprises a controller, a driving device, a switch shifting device and a stabilized voltage supply used for supplying power to the parts, wherein the controller receives a detection signal from an internal power supply of the computer, processes the detection signal and outputs a driving signal to the driving device; and the switch shifting device is connected in a power supply circuit of the computer in series and realizes switch shifting under the action of the driving device. When the detection signal reflects that the computer is in a shutdown state, the controller sends a control signal to the driving device so that the switch shifting device shuts off the power supply circuit of the computer, thus realizing the function of automatically shutting off power supply in shutdown of the computer, avoiding the complicated process of manually operating a switch and ensuring no meaningless electric consumption after shutdown of the computer.

Description

A kind of computer shutdown equipment of cutting off the electricity supply automatically

Technical field

The utility model relates to a kind of automatic control equipment, particularly a kind of computer shutdown equipment of cutting off the electricity supply automatically.

Background technology

General computing machine needs only its power supply master switch and does not cut out after shutdown, part parts in the main frame just can be charged always so, thereby bring power consumption, though this a part of power consumption is also not obvious for each computing machine, but when number during in this part electric power of necessarily computing machine loss simultaneously, the electric power total amount of loss has been negligible degree no longer just.Therefore, in order to tackle the situation of energy worsening shortages, avoid meaningless power consumption, we must guarantee that after using a computer its power supply can cut off fully, but our employed computer power supply equipment all is general socket at present, though it has the cut-out switch, yet most of user does not have the custom that manual operation cut-out switch makes the power supply cut-out after use, thereby it will bring consequence described above.

The utility model content

For addressing the above problem, the utility model provides a kind of equipment that can cut off the electricity supply automatically behind computer shutdown.

The utility model is that the technical scheme that its problem of solution is adopted is:

A kind of computer shutdown equipment of cutting off the electricity supply automatically, the stabilized voltage supply that it is characterized in that comprising controller, drive unit, switch switching device shifter and be used for powering to above-mentioned parts, described controller receives the internal electric source detection signal from computing machine, controller is handled detection signal to described drive unit output drive signal, described switch switching device shifter is serially connected with in the current supply circuit of computing machine, and the switch switching device shifter realizes that under the effect of drive unit switch switches.

The beneficial effects of the utility model are: because computer booting and when shutting down the state of internal electric source different, the on-off state that can reflect computing machine by the variation that detects some parts voltage of internal electric source, can send control signal automatically based on this detection signal controller makes switch switching device shifter state switch to drive unit, when detection signal reflection computing machine is off-mode, controller sends control signal makes the switch switching device shifter cut off the computer power supply current supply circuit to drive unit, thereby realize the function that computer shutdown is cut off the electricity supply automatically, avoided the complicated processes of manual operation switch, guaranteed to no longer include meaningless power consumption behind the computer shutdown.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is that circuit of the present utility model connects block diagram;

Fig. 2 is the circuit theory diagrams of a kind of embodiment of the utility model.

Embodiment

With reference to Fig. 1, a kind of computer shutdown of the present utility model equipment of cutting off the electricity supply automatically, the stabilized voltage supply 4 that comprises controller 1, drive unit 2, switch switching device shifter 3 and be used for powering to above-mentioned parts, the internal electric source detection signal that described controller 1 receives from computing machine, controller 1 is handled detection signal to described drive unit 2 output drive signals, described switch switching device shifter 3 is serially connected with in the current supply circuit of computing machine, and switch switching device shifter 3 realizes that under the effect of drive unit 2 switch switches.Because computer booting and when shutting down the state of internal electric source different, the on-off state that can reflect computing machine by the variation that detects some parts voltage of internal electric source, can send control signal automatically based on this detection signal controller 1 makes switch switching device shifter 3 states switch to drive unit 2, when detection signal reflection computing machine is off-mode, controller 1 sends control signal makes switch switching device shifter 3 cut off the computer power supply current supply circuit to drive unit 2, thereby realizes the function that computer shutdown is cut off the electricity supply automatically.

When practical application, controller generally also is provided with reset key 5, when pressing, reset key 5 imports reset signal to controller 1, after controller 1 receives this reset signal, the signal that outputs to drive unit 2 resets, this moment, switch switching device shifter 3 recovered original state under the effect of drive unit 2, and the computer power supply current supply circuit is engaged again.

With reference to Fig. 2, circuit theory diagrams for a kind of preferred implementation of the utility model, the controller 1 preferred single-chip microcomputer that adopts, its model can be AT89C2051, stabilized voltage supply 4 comprises transformer 41, rectifier bridge 42 and three-terminal voltage-stabilizing chip 43, the former limit of described transformer 41 is electrically connected with the city, secondary is connected with the input end of described rectifier bridge 42, the output terminal of rectifier bridge 42 is connected with the input end of three-terminal voltage-stabilizing chip 43, and the output of three-terminal voltage-stabilizing chip 43 is to controller 1,

drive unit

2,3 power supplies of switch switching device shifter.Switch switching device shifter 3 is a relay, and the coil of described relay is connected with drive unit 2, and the contact switch of relay is serially connected with in the current supply circuit of computing machine.Transformer 41 makes line voltage change into about 8V from 220V, output dc voltage behind rectifier bridge 42, and this DC voltage enters the three-terminal voltage-stabilizing chip 43 stable output in (adopting 7805) back 5V voltage.When computer shutdown, the internal electric source detection signal level of delivering to single-chip microcomputer changes, single-chip microcomputer is judged the off-mode of computing machine, change the signal level that outputs to drive unit 2, make that the transistor Q in the drive unit 2 is open-minded, the relay coil energising that is attached thereto makes that the contact switch in setting and the computer power supply current supply circuit switches, make the computer power supply current supply circuit cut off, thereby realize the function that computer shutdown is cut off the electricity supply automatically.

Above-mentionedly just preferred embodiments more of the present utility model are illustrated and describe; but structure of the present utility model is not restricted to the described embodiments; as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.

Claims

1. computer shutdown equipment of cutting off the electricity supply automatically, the stabilized voltage supply (4) that it is characterized in that comprising controller (1), drive unit (2), switch switching device shifter (3) and be used for powering to above-mentioned parts, described controller (1) receives the internal electric source detection signal from computing machine, controller (1) is handled detection signal to described drive unit (2) output drive signal, described switch switching device shifter (3) is serially connected with in the current supply circuit of computing machine, and switch switching device shifter (3) realization switch under the effect of drive unit (2) switches.

2. a kind of computer shutdown according to claim 1 equipment of cutting off the electricity supply automatically is characterized in that described controller is provided with reset key (5), reset key (5) when pressing to controller (1) input reset signal.

3. a kind of computer shutdown according to claim 1 equipment of cutting off the electricity supply automatically, it is characterized in that described stabilized voltage supply (4) comprises transformer (41), rectifier bridge (42) and three-terminal voltage-stabilizing chip (43), the former limit of described transformer (41) is electrically connected with the city, secondary is connected with the input end of described rectifier bridge (42), the output terminal of rectifier bridge (42) is connected with the input end of three-terminal voltage-stabilizing chip (43), and the output of three-terminal voltage-stabilizing chip (43) is to controller (1), drive unit (2), switch switching device shifter (3) power supply.

4. a kind of computer shutdown according to claim 1 equipment of cutting off the electricity supply automatically, it is characterized in that described switch switching device shifter (3) is a relay, the coil of described relay is connected with drive unit (2), and the contact switch of relay is serially connected with in the current supply circuit of computing machine.