CN2731839Y - Device for locking switching control key of electronic device - Google Patents
Device for locking switching control key of electronic device Download PDFInfo
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- CN2731839Y CN2731839Y CN 200420003403 CN200420003403U CN2731839Y CN 2731839 Y CN2731839 Y CN 2731839Y CN 200420003403 CN200420003403 CN 200420003403 CN 200420003403 U CN200420003403 U CN 200420003403U CN 2731839 Y CN2731839 Y CN 2731839Y
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- input
- switch operating
- operating key
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- level
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- 238000009434 installation Methods 0.000 claims description 26
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model provides a device for locking a switching control key in an electronic device. One end of the switching control key is connected to a device controlled by the switching control key, and the other end is connected to an output end of the device for locking a switching control key in an electronic device. The device for locking a switching control key in an electronic device comprises an input control end, a control circuit and a power supply, wherein the input control end is used for receive a control signal to lock or turn on the switching control key according to the control signal. The control circuit generates a level controlling one end of the switching control key according to the control signal; the control circuit also comprises a level converting circuit for generating a level controlling the switching control key according to the control signal. The power supply is coupled to the control circuit for ensuring that the generated level satisfies the level requirement of the switching control key. The utility model ensures the reliability of the electronic device.
Description
Technical field
The utility model belongs to circuit design, belongs to computer and information technology or circuit design field, is specifically related to lock the device of the switch operating key in the electronic installation.
Background technology
Server has strict requirement as the center of a kind of exchanges data and storage to its stability and anti-interference.In the operation of reality, if false touch on ﹠ off switch or restart key can cause more serious consequence.In order to prevent the generation of this situation, need a kind of device, can when not needing to use on ﹠ off switch or restarting key, lock these two keys, in the time of needs, can carry out release again.
In addition, a lot of electronic installations all have power switch key and restart key, if be in operation, have touched these keys, and data in the electronic installation and program and operation may be subjected to very big influence.Therefore, wishing has a kind of apparatus and method, can be according to the control requirement, some keys of electronic installation are locked under predetermined condition, and realize the highly reliable operation of electronic installation.
Summary of the invention
The purpose of this utility model is the shortcoming at above-mentioned prior art, provides a kind of some keys with electronic installation to lock under predetermined condition, realizes the apparatus and method of the highly reliable operation of electronic installation.
The utility model provides a kind of device that locks the switch operating key in the electronic installation, wherein, one end of described switch operating key is connected to by the device of described switch operating key control, the other end is connected to the output of the device of the switch operating key in the described locking electronic installation, and the device of the switch operating key in the described locking electronic installation comprises:
The input control end is used to receive control signal, to lock or to enable described switch operating key according to described control signal;
Control circuit according to control signal, produces the level of an end of the described switch operating key of control, and wherein said control circuit also comprises level shifting circuit, is used for producing according to control signal the level of the described switch operating key of control;
Power supply is coupled to described control circuit, satisfies the level requirement of described switch operating key to guarantee the level that produces.
Alternatively, described control circuit comprises: switching circuit, be used for according to control signal, and conducting or the end that blocks described switch operating key are to ground or power channel.
Preferably, described switching circuit comprises: bipolar or MOS transistor, its base stage or gate coupled be to described input, is used for signal according to input and makes described transistorized collector electrode and emitter-base bandgap grading or source electrode and drain electrode conducting or end, and controls the level of an end of described switch operating key.
Alternatively, described switching circuit comprises: relay, its control end is coupled to described input, is used for signal according to input and makes described relay conducting or end, and controls the level of an end of described switch operating key.
Preferably, described switching circuit comprises:
Input is used to receive control signal;
The input bias resistance connects described input to ground;
The PNP transistor, its base stage is connected to described input, the transistorized grounded collector of described PNP;
Emitter resistance connects the transistorized emitter-base bandgap grading of described PNP to power supply;
Output is connected to the transistorized emitter-base bandgap grading of described PNP.
Alternatively, the resistance of described input bias resistance and described emitter resistance is 4.7 kilohms.
Preferably, described switching circuit comprises:
Input is used to receive control signal;
The input bias resistance connects input to power supply;
NPN transistor, its base stage is connected to described input, its emitter grounding;
Collector resistance, the collector electrode that connects described NPN transistor is to power supply;
Output is connected to the collector electrode of described NPN transistor.
Alternatively, the resistance of described input bias resistance and described collector resistance is 4.7 kilohms.
A kind of method that locks the switch operating key in the electronic installation of the present utility model comprises step:
Obtain the signal of the state of the described switch operating key of control;
According to the structure of described switch operating key, determine the required control level of described switch operating key;
According to the described control signal of obtaining and definite control level, output control level signal is given an end of described switch operating key.
Alternatively, described structure according to described switch operating key, the step of determining the required control level of described switch operating key comprises: read the level of an end when not having control signal that described switch operating key is received its device of controlling, change the level of state according to the described switch operating key of non-definite control of this level.
Utilize the utility model, guaranteed the reliability of electronic installation.
Description of drawings
Fig. 1 shows the theory diagram of the device of the switch operating key in the locking electronic installation of the present utility model;
Fig. 2 shows the circuit theory sketch of the device of the switch operating key in the locking electronic installation of embodiment 1 of the present utility model;
Fig. 3 shows the circuit theory sketch of the device of the switch operating key in the locking electronic installation of embodiment 2 of the present utility model.
Embodiment
Understand and realization the utility model for the ease of persons skilled in the art, now describe embodiment of the present utility model in conjunction with the accompanying drawings.
Fig. 1 shows the theory diagram of the device of the switch operating key in the locking electronic installation of the present utility model.In embodiment of the present utility model, the device of the switch operating key in the locking electronic installation comprises:
Power supply, in the utility model, this power supply is used for providing power supply to control circuit.
Control circuit is used for when not having the control signal input, and the key that keeps wishing locking can be enabled or forbid.In embodiment of the present utility model, control circuit also comprises the level shifting circuit (not shown), no matter control signal is input as 3.3v or 5v, guarantees that its output all is the 5v level, wishes that with control the key of locking can be enabled or forbid.
In an embodiment, control signal is that GPIO (is a universaling I/O port, finger can provide signal output and from the pin of ancillary equipment input signal for ancillary equipment, these pins can provide multiduty input and output signal by software, General Purpose Input/Output) the next signal of signal or server management device, can control by software, also can be to be controlled by the controller of system.
Keep high level at ordinary times at common on ﹠ off switch signal, when pressing on ﹠ off switch, a switching on and shutting down signal and a low level point A (seeing Fig. 2 and Fig. 3) are connected, the switching on and shutting down signal is dragged down, and just produces the action of start or shutdown.Restart Signal is like this equally.Embodiment of the present utility model just can reach locking or enable on ﹠ off switch and the purpose of restarting key by this level height of control.When the A point is high level, press on ﹠ off switch, switching signal still keeps high level, so just can not produce the switching on and shutting down signal, has reached the purpose of locking switch key.When the A point is low level, press on ﹠ off switch, switching signal is dragged down, and can produce the switching on and shutting down signal, and this has just enabled on ﹠ off switch.It is like this equally to restart key.Therefore, the control circuit of embodiment of the present utility model is according to control signal, and the output high-low level is given an end A point of on ﹠ off switch, with the locking of controlling this on ﹠ off switch or do not lock.
Fig. 2 shows the circuit theory sketch of the device of the switch operating key in the locking electronic installation of embodiment 1 of the present utility model.Wherein, control a plurality of on ﹠ off switches if desired, can adopt such circuit or adopt distributor each key.
The circuit of the device of the switch operating key in the locking electronic installation of the utility model embodiment 1 comprises: input is used to receive control signal; Input bias resistance R1 connects input to ground, and its resistance is 4.7K; Input is also connected to the base stage of PNP transistor Q1; The grounded collector of PNP transistor Q1; The emitter-base bandgap grading of PNP transistor Q1 is connected to positive supply by emitter resistance R2; Simultaneously, the emitter-base bandgap grading of PNP transistor Q1 is connected to an end A point of the switch (not shown) that will control.The other end of the switch of controlling is connected to the circuit of this switch control.
If the input control signal default value is a low level, this embodiment 1 can enable two keys under the default value situation.When not having control signal input or input signal to be low level, transistor base is low, the triode conducting, so A point be low level, the initiate mode of two keys maintenance at this moment.If input signal becomes high level, then transistor emitter and collector electrode disconnect, and the A level point is high, and then two keys are disabled.
If the input control signal default value is a high level, can under default situations, forbid two keys.When not having control signal input or input signal to be high level, transistor base be high, and triode ends, so A point is high level, the disabled status of two keys maintenance at this moment.If input signal becomes low level, the A level point is low, and then two keys are activated.
Fig. 3 shows the circuit theory sketch of the device of the switch operating key in the locking electronic installation of embodiment 2 of the present utility model.
The circuit of the device of the switch operating key in the locking electronic installation of the utility model embodiment 2 comprises: input is used to receive control signal; Input bias resistance R1 connects input to positive supply, and its resistance is 4.7K; Input is also connected to the base stage of NPN transistor Q2; The emitter grounding of NPN transistor Q2; The collector electrode of NPN transistor Q2 is connected to positive supply by collector resistance R2; Simultaneously, the collector electrode of NPN transistor Q2 is connected to an end A point of the switch (not shown) that will control.The other end of the switch of controlling is connected to the circuit of this switch control.
At the input control signal default value is high level, and this embodiment 2 can enable two keys under default situations.When not having control signal input or input signal to be high level, transistor base be high, the triode conducting, so A point is low level, the initiate mode of two keys maintenance at this moment.If input signal becomes low level, then transistor emitter and collector electrode disconnect, and the A level point is high, and then two keys are disabled.
At the input control signal default value is low level, and this embodiment 2 can be forbidden two keys under default situations.When not having control signal input or input signal to be low level, transistor base is low, and triode ends, so A point be high level, the disabled status of two keys maintenance at this moment.If input signal becomes high level, then transistor emitter and collector electrode conducting, the A level point is low, then two keys are activated.
Though the utility model utilizes bipolar transistor to describe the utility model, persons skilled in the art know that metal-oxide-semiconductor also can be used as the utility model, and length is opened, long disconnected relay also can replace the transistor in the utility model.
A kind of method that locks the switch operating key in the electronic installation of the present utility model comprises step:
Obtain the signal of the state of the described switch operating key of control;
According to the structure of described switch operating key, determine the required control level of described switch operating key;
According to the described control signal of obtaining and definite control level, output control level signal is given an end of described switch operating key.
Wherein, described structure according to described switch operating key, the step of determining the required control level of described switch operating key comprises: read the level of an end when not having control signal that described switch operating key is received its device of controlling, change the level of state according to the described switch operating key of non-definite control of this level.
Though described the utility model by embodiment, those of ordinary skills know, the utility model has many distortion and variation and does not break away from spirit of the present utility model, wishes that appended claim comprises these distortion and variation and do not break away from spirit of the present utility model.
Claims (8)
1. device that locks the switch operating key in the electronic installation, wherein, an end of described switch operating key is connected to by the device of described switch operating key control, and the other end is connected to the output of the device of the switch operating key in the described locking electronic installation; It is characterized in that the device of the switch operating key in the described locking electronic installation comprises:
The input control end is used to receive control signal, to lock or to enable described switch operating key according to described control signal;
Control circuit according to control signal, produces the level of an end of the described switch operating key of control, and wherein said control circuit also comprises level shifting circuit, is used for producing according to control signal the level of the described switch operating key of control;
Power supply is coupled to described control circuit, satisfies the level requirement of described switch operating key to guarantee the level that produces.
2. device according to claim 1 is characterized in that, described control circuit comprises: switching circuit, be used for according to control signal, and conducting or the end that blocks described switch operating key are to ground or power channel.
3. device according to claim 2, it is characterized in that, described switching circuit comprises: bipolar or MOS transistor, its base stage or gate coupled are to described input, be used for signal according to input and make described transistorized collector electrode and emitter-base bandgap grading or source electrode and drain electrode conducting or end, control the level of an end of described switch operating key.
4. device according to claim 2, it is characterized in that described switching circuit comprises: relay, its control end is coupled to described input, be used for signal according to input and make described relay conducting or end, control the level of an end of described switch operating key.
5. device according to claim 3 is characterized in that, described switching circuit comprises:
Input is used to receive control signal;
The input bias resistance connects described input to ground;
The PNP transistor, its base stage is connected to described input, the transistorized grounded collector of described PNP;
Emitter resistance connects the transistorized emitter-base bandgap grading of described PNP to power supply;
Output is connected to the transistorized emitter-base bandgap grading of described PNP.
6. device according to claim 5 is characterized in that, the resistance of described input bias resistance and described emitter resistance is 4.7 kilohms.
7. device according to claim 3 is characterized in that, described switching circuit comprises:
Input is used to receive control signal;
The input bias resistance connects input to power supply;
NPN transistor, its base stage is connected to described input, its emitter grounding;
Collector resistance, the collector electrode that connects described NPN transistor is to power supply;
Output is connected to the collector electrode of described NPN transistor.
8. device according to claim 7 is characterized in that, the resistance of described input bias resistance and described collector resistance is 4.7 kilohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003403 CN2731839Y (en) | 2004-02-09 | 2004-02-09 | Device for locking switching control key of electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003403 CN2731839Y (en) | 2004-02-09 | 2004-02-09 | Device for locking switching control key of electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731839Y true CN2731839Y (en) | 2005-10-05 |
Family
ID=35052153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420003403 Expired - Fee Related CN2731839Y (en) | 2004-02-09 | 2004-02-09 | Device for locking switching control key of electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731839Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095264A (en) * | 2011-10-28 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Opening and closing machine circuit adopting two triodes |
| US8661239B2 (en) | 2009-11-05 | 2014-02-25 | Zte Corporation | Encryption device and method for controlling download and access operations performed to a mobile terminal |
| CN113961083A (en) * | 2021-10-20 | 2022-01-21 | 深圳市神舟创新科技有限公司 | On-off key locking method of notebook computer |
-
2004
- 2004-02-09 CN CN 200420003403 patent/CN2731839Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8661239B2 (en) | 2009-11-05 | 2014-02-25 | Zte Corporation | Encryption device and method for controlling download and access operations performed to a mobile terminal |
| CN103095264A (en) * | 2011-10-28 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Opening and closing machine circuit adopting two triodes |
| CN113961083A (en) * | 2021-10-20 | 2022-01-21 | 深圳市神舟创新科技有限公司 | On-off key locking method of notebook computer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |