CN2814538Y - Antitheft device - Google Patents
Antitheft device Download PDFInfo
- Publication number
- CN2814538Y CN2814538Y CN 200520113985 CN200520113985U CN2814538Y CN 2814538 Y CN2814538 Y CN 2814538Y CN 200520113985 CN200520113985 CN 200520113985 CN 200520113985 U CN200520113985 U CN 200520113985U CN 2814538 Y CN2814538 Y CN 2814538Y
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- CN
- China
- Prior art keywords
- signal
- circuit
- switch
- conversion circuit
- main control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an antitheft device which comprises a main control circuit, a signal conversion circuit, a buzzer and a switch. The switch is arranged in a machine box of a computer. When a side cover of the machine box is closed, and the switch lies in the normally open state, so that the main control circuit and the signal conversion circuit lie in the conducting state. The main control circuit transmits a judge signal A to the signal conversion circuit. After the judge signal is converted to a signal B by the signal conversion circuit, and then is returned to the main control circuit. When the side cover of the machine box is opened, the main control circuit and the signal conversion circuit lie in the off state When the signal which is received by the main control circuit is the signal A, or the main control circuit has not signal to receive, the utility model transmits an indication signal to the buzzer and the buzzer alarms. The utility model has the advantage that no matter the side cover of the main machine box is opened, or one circuit which is connected with the main control circuit is in short circuit or broken circuit, the utility model can send out an alarm signal in first time, therefore the goal of preventing the computer from stealing can be achieved.
Description
Technical field
The utility model relates to a kind of anti-theft device that the Internet bar prevents that computer is stolen that is used for.
Background technology
The Internet bar is one of people's main place of surfing the Net.The computer of general Internet bar is all many, and the people who surfs the Net is also complicated, is not stolen by others in order to ensure Internet bar's computer and relevant parts thereof, needs the special messenger and makes an inspection tour.However, the stolen phenomenon of computer part still usually takes place.
The utility model content
At the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of anti-theft device that is used for internet bar monitoring computer and associated components.
For achieving the above object, a kind of anti-theft device of the utility model comprises: governor circuit, signaling conversion circuit, hummer and switch, described switch is arranged in the computer cabinet, when the side cover of cabinet is closed, this switch is in normally open, and make described governor circuit and described signaling conversion circuit be in conducting state, described governor circuit sends one to described signaling conversion circuit and judges signal A, after being converted to signal B, the described signaling conversion circuit of process returns governor circuit again, when the side cover of cabinet was opened, described governor circuit and described signaling conversion circuit were in off state; When the signal that described governor circuit receives is signal A or no signal reception, send indicator signal to described hummer, buzzer warning.
Further, also comprise socket switch, described socket switch is connected with described switch, comprises a plug and socket, is provided with the space of placing the computer peripheral signal wire between this plug and socket, and described plug is in conducting state after inserting described socket.
Further, also comprise signal lamp, this signal lamp is arranged on the described hummer circuit, and when buzzer warning, described signal lamp is bright.
Further, the model of described governor circuit is SPCE061A.
Further, described signaling conversion circuit is the circuit that a resistance becomes with a direct current power pack.
The beneficial effects of the utility model are: no matter be that the side cover of mainframe box is opened or connects the line short or the short circuit of governor circuit, the utility model can both send alerting signal in the very first time, thereby has reached the purpose that prevents that computer is stolen.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of socket switch.
Embodiment:
As shown in Figure 1, the utility model comprises: governor circuit 1, signaling conversion circuit 2, hummer 3, signal lamp 5, two switches 4 and socket switch 6, switch 4 is arranged in the computer cabinet, when the left and right side cap of cabinet is closed, these two switches 4 are in normally open, and make governor circuit 1 and signaling conversion circuit 2 be in conducting state, governor circuit 1 sends one to signaling conversion circuit 2 and judges signal A (5V voltage signal), after being converted to signal B (3V voltage signal), process signaling conversion circuit 2 returns governor circuit 1 again, when the side cover of cabinet was opened, governor circuit 1 was in off state with signaling conversion circuit 2; When the signal that governor circuit receives is signal A or no signal reception, send indicator signal to described hummer 3 and signal lamp 5, hummer 3 is reported to the police, and signal lamp 5 is bright; Socket switch 6 as shown in Figure 2, socket switch 6 and switch 4 polyphones, comprise a plug 7 and socket 8, be provided with the space of placing computer peripheral (as mouse, phonotape and videotape, keyboard etc.) signal wire between this plug 7 and the socket 8, be in conducting state after plug 7 inserts socket 8.Wherein, the model of governor circuit 1 is SPCE061A, and signaling conversion circuit 2 is circuit that a resistance and a direct current power supply (3.3V) are formed.
When computer connects the line short of governor circuit 1 or opens circuit, corresponding signal lamp 5 will be bright, and simultaneously corresponding hummer 3 also can ring, when the plug 7 of socket switch 6 be pulled out or socket switch 6 short circuits, when opening circuit, corresponding signal lamp 5 will be bright, and simultaneously corresponding hummer 3 also can ring.Thereby played antitheft purpose.
Claims (5)
1, a kind of anti-theft device, it is characterized in that, comprise: governor circuit, signaling conversion circuit, hummer and switch, described switch is arranged in the computer cabinet, when the side cover of cabinet is closed, this switch is in normally open, and make described governor circuit and described signaling conversion circuit be in conducting state, described governor circuit sends one to described signaling conversion circuit and judges signal A, after being converted to signal B, the described signaling conversion circuit of process returns governor circuit again, when the side cover of cabinet was opened, described governor circuit and described signaling conversion circuit were in off state; When the signal that described governor circuit receives is signal A or no signal reception, send indicator signal to described hummer, buzzer warning.
2, a kind of anti-theft device according to claim 1, it is characterized in that, also comprise socket switch, described socket switch is connected with described switch, comprise a plug and socket, be provided with the space of placing the computer peripheral signal wire between this plug and socket, described plug is in conducting state after inserting described socket.
3, a kind of anti-theft device according to claim 1 and 2 is characterized in that, also comprises signal lamp, and this signal lamp is arranged on the described hummer circuit, and when buzzer warning, described signal lamp is bright.
4, a kind of anti-theft device according to claim 3 is characterized in that, the model of described governor circuit is SPCE061A.
5, a kind of anti-theft device according to claim 4 is characterized in that, described signaling conversion circuit is the circuit that a resistance becomes with a direct current power pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113985 CN2814538Y (en) | 2005-07-18 | 2005-07-18 | Antitheft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113985 CN2814538Y (en) | 2005-07-18 | 2005-07-18 | Antitheft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814538Y true CN2814538Y (en) | 2006-09-06 |
Family
ID=36949624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520113985 Expired - Fee Related CN2814538Y (en) | 2005-07-18 | 2005-07-18 | Antitheft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814538Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294110A (en) * | 2012-02-29 | 2013-09-11 | 鸿富锦精密工业（深圳）有限公司 | Server |
| CN103348950A (en) * | 2013-07-25 | 2013-10-16 | 于海洪 | Control method for aquaculture and controller |
| CN107564218A (en) * | 2017-09-08 | 2018-01-09 | 国网山东省电力公司淄博供电公司 | Measure cabinet door intelligent monitoring device |
-
2005
- 2005-07-18 CN CN 200520113985 patent/CN2814538Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294110A (en) * | 2012-02-29 | 2013-09-11 | 鸿富锦精密工业（深圳）有限公司 | Server |
| CN103294110B (en) * | 2012-02-29 | 2017-06-06 | 光通天下网络科技有限公司 | Server |
| CN103348950A (en) * | 2013-07-25 | 2013-10-16 | 于海洪 | Control method for aquaculture and controller |
| CN107564218A (en) * | 2017-09-08 | 2018-01-09 | 国网山东省电力公司淄博供电公司 | Measure cabinet door intelligent monitoring device |
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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 |