CN202084046U - Pressure sensing type anti-theft device of notebook computer - Google Patents
Pressure sensing type anti-theft device of notebook computer Download PDFInfo
- Publication number
- CN202084046U CN202084046U CN2011202286289U CN201120228628U CN202084046U CN 202084046 U CN202084046 U CN 202084046U CN 2011202286289 U CN2011202286289 U CN 2011202286289U CN 201120228628 U CN201120228628 U CN 201120228628U CN 202084046 U CN202084046 U CN 202084046U
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- notebook computer
- pressure sensing
- analog switch
- pressure
- computer
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Abstract
The utility model discloses a pressure sensing type anti-theft device of a notebook computer, which comprises a pressure sensor, an analog switch, a warning circuit, an electronic sounding device, etc. The pressure sensor comprises a metal small ball, side wall pressure sensing chips, a bottom plate, an adjustable elastic switch, etc. The pressure sensor is connected with the analog switch; the analog switch is connected with the warning circuit; the warning circuit is connected with the electronic sounding device; the metal small ball is placed on the bottom plate; when the notebook computer is horizontal or similarly horizontal, the metal small ball is inside a concave arc surface; and when the notebook computer is tilted, the metal small ball rolls out the concave arc surface and generates pressure to the side wall pressure sensing chips, the pressure sensor is triggered to be a high level state, the high level leads to the closing of the analog switch, and the warning circuit is conducted. The device is applicable to the anti-theft of the notebook computer, and has good hiding performance and high safety since the whole device is embedded in the bottom plate of the notebook computer. Once the notebook computer is tilted unconsciously in any direction when a thief steals the computer, the electronic sounding device gives an alarm.
Description
Affiliated technical field
The utility model relates to a kind of notebook computer antitheft device, especially can realize the notebook computer antitheft device that pressure sensing triggers.
Background technology
Notebook computer becomes more and more popular because it is portable, popularize between student and staff of new generation gradually, and the stolen phenomenon of notebook computer happens occasionally.Investigation shows that its theftproof performance is just becoming the consumer and buying the key factor that notebook is considered.In order to protect computer, people have thought many methods, and as traditional note-book computer lock, but this lock too appears, and destroyed easily, safety coefficient is not high.Chinese invention patent application number 200510011345.8 discloses a kind of computer antitheft device based on the level induction, its conductive switch by inside have positive spherical hollow space the insulation spherical shell, form greater than the metal spherical crown of hemisphere, spherical crown is contained in the cavity of spherical shell, the spherical shell top has a contact to be connected with the warning circuit assembly, the spherical shell bottom has a contact to link to each other with power supply, under horizontality, spherical crown only contacts with bottom contact, under the non-standard state, spherical crown all contacts with top contact and bottom contact.It is disguised better, but because friction force is bigger, and its sensitivity, degree of accuracy are lower.
Summary of the invention
The purpose of this utility model is, overcomes the shortcoming of prior art, provides that a kind of disguise is better, security is higher, sensitivity, the notebook computer antitheft device that degree of accuracy is higher.
The technical solution of the utility model is such:
A kind of pressure sensing type notebook computer antitheft of the utility model device, comprise flip flop equipment, warning device, flip flop equipment is a pressure transducer, comprises prill, adjustable elastic switch, lateral wall pressure sensing chip, base plate, and warning device comprises warning circuit, electronic sound device;
When computer tilted, prill oppose side wall pressure sensitive sheet produced pressure, makes the adjustable elastic switch closure by the lateral wall pressure sensing chip, the pressure transducer pin was triggered be high level;
The pressure transducer pin links to each other with analog switch, and analog switch links to each other with warning circuit, and warning circuit links to each other with the electronic sound device, and power supply links to each other with analog switch, pressure transducer, the analog switch closure, and circuit turn-on, the electronic sound device sends alarm sound;
There is a depression arc surface in base plate central authorities, and when computer level or level of approximation, prill is in the depression arc surface, and when computer tilted, prill rolled out the depression arc surface, thereby oppose side wall pressure sensitive sheet produces pressure.
As further improvement of the utility model, the electronic sound device is made of external buzzer.
As further improvement of the utility model, the electronic sound device is made of computer self loudspeaker.
As further improvement of the utility model, the lockset switch is made of tapered end and key.
As further improvement of the utility model, power supply is an independent current source, can not influence the anti-theft device operate as normal because of shut down of computer or outage.
The invention has the beneficial effects as follows:
Adopt the horizontal pressure force sensor-triggered, change pressure signal into level signal, sensitivity, degree of accuracy are higher; Adopt external buzzer or computer self loudspeaker to report to the police, security is higher; Warning device is embedded in the notebook computer base, and is hidden effective.
Description of drawings
Fig. 1 is a computer antitheft device workflow structural drawing;
Fig. 2 is the electrical block diagram of computer antitheft device;
The circuit structure enlarged drawing that Fig. 3 does not trigger for pressure transducer one sidewall;
The circuit structure enlarged drawing that Fig. 4 will trigger for pressure transducer one sidewall;
Fig. 5 is not for having the computer architecture decomposition diagram of computer antitheft device;
Fig. 6 is the computer architecture decomposition diagram with computer antitheft device.
The drawing explanation
The 11-pressure transducer; The 12-analog switch; The 13-warning circuit; 14-electronic generator spare; 20-pressure sensing type notebook computer antitheft device; The 231-transformer; The 240-independent current source; 221-singly throws the lockset switch; The 301-prill; 302-pressure transducer pin; 303-adjustable elastic switch; 304-lateral wall pressure sensing chip; The 305-base plate; The 306-arc surface that caves in.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1: in Fig. 1 computer antitheft apparatus structure process flow diagram, comprise pressure transducer (11), analog switch (12), warning circuit (13), electronic sound device (14), pressure transducer (11) changes pressure signal into level signal passes to analog switch (12), analog switch (12) is passed to warning circuit (13) with voltage signal, warning circuit (13) is passed to electronic sound device (14) with voltage signal, thereby forms a complete warning device;
As Fig. 2, in the computer antitheft device circuit structural drawing (20), electronic generator spare (14) is connected with warning circuit (13), warning circuit (13) is connected with analog switch (12), analog switch (12) is connected with pressure transducer (11), and independent current source (240) is connected with analog switch (12), pressure transducer (11).Pressure transducer (11) will produce high level once triggering, and makes analog switch (12) closure, thereby makes the warning circuit conducting;
Lockset switch (221) closure, anti-theft device is opened, analog switch (12) is made of the CMOS pipe, the high level switch closure, the low level switch disconnects, independent current source (240) is that analog switch (12), pressure transducer (11), electronic sound device (14) provide electric energy, and electronic sound device (14) is made of external buzzer.
As Fig. 3, the circuit structure enlarged drawing that sidewall of pressure transducer does not trigger, prill is placed on the base plate, sidewall has a slice lateral wall pressure sensing chip (sidewall only draws among the figure) respectively around prill, the lateral wall pressure sensing chip is made up of the light-weight metal thin slice, when computer level or level of approximation, prill is in the depression arc surface;
As Fig. 4, the circuit structure enlarged drawing that sidewall of pressure transducer will trigger, when fuselage tilts, prill rolls out the depression arc surface, thereby oppose side wall pressure sensitive sheet produces pressure, make the adjustable elastic switch closure by the lateral wall pressure sensing chip, be high level thereby pressure transducer pin (302) is triggered;
As Fig. 5 is the computer decomposition diagram that burglar alarm is not installed;
For the computer decomposition diagram of computer antitheft alarm device (20) to be installed, computer antitheft alarm device (20) is installed in the computer base as Fig. 6, good concealment.
Embodiment 2 is substantially the same manner as Example 1, and its difference is: electronic sound device (14) is made of computer self loudspeaker, can save external buzzer, thereby reduce cost.
During use,, anti-theft device is opened by lockset switch (221).When the thief commits theft in the process computer is tilted, prill rolls out the depression arc surface, the pressure sensitive sheet that is distributed in its sidewall is produced pressure, the lateral wall pressure sensing chip is subjected to prill pressure to make the adjustable elastic switch closure, pressure transducer pin (302) triggers and is high level, pressure transducer pin (302) links to each other with analog switch (12), and high level makes analog switch (12) closure, and electronic sound device (14) is reported to the police.Adjustable elastic switch (303) can be regulated its sensitivity by changing the spring stiffness factor.
The utility model is applied to notebook computer antitheft, and it provides a kind of disguise better, and security is higher, sensitivity, the notebook computer antitheft device that degree of accuracy is higher.
Claims (7)
1. a pressure sensing type notebook computer antitheft device comprises flip flop equipment, warning device, it is characterized in that:
Flip flop equipment is pressure transducer (11), comprises prill (301), adjustable elastic switch (303), lateral wall pressure sensing chip (304), base plate (305);
Warning device comprises warning circuit (13), electronic sound device (14);
When computer tilted, prill (301) oppose side wall pressure sensitive sheet (304) produced pressure, makes adjustable elastic switch (303) closure by lateral wall pressure sensing chip (304), pressure transducer pin (302) was triggered be high level;
Pressure transducer pin (302) links to each other with analog switch (12), analog switch (12) links to each other with warning circuit (13), warning circuit (13) links to each other with electronic sound device (14), power supply (240) links to each other with analog switch (12), pressure transducer (11), analog switch (12) closure, circuit turn-on, the electronic sound device sends alarm sound;
There is a depression arc surface (306) in base plate (305) central authorities, when computer level or level of approximation, prill (301) is in depression arc surface (306), when computer tilts, prill (301) rolls out depression arc surface (306), thereby oppose side wall pressure sensitive sheet (304) produces pressure.
2. pressure sensing type notebook computer antitheft device according to claim 1 is characterized in that: electronic sound device (14) is made of external buzzer.
3. pressure sensing type notebook computer antitheft device according to claim 1 is characterized in that: electronic sound device (14) is made of the loudspeaker of computer self.
4. pressure sensing type notebook computer antitheft device according to claim 1 is characterized in that: analog switch (12) is made of the CMOS pipe, and high level makes analog switch (12) closure, and low level makes its disconnection.
5. pressure sensing type notebook computer antitheft device according to claim 1 is characterized in that: power supply (240) is an independent current source, not can because of shut down of computer or outage can't operate as normal.
6. pressure sensing type notebook computer antitheft device according to claim 1 is characterized in that: pressure transducer (11) has an external lockset switch (221) control, lockset switch (221) closure, and anti-theft device is opened.
7. according to claim 1,2,3,4,5 or 6 described pressure sensing type notebook computer antitheft devices, it is characterized in that: can embed computer base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202286289U CN202084046U (en) | 2011-06-23 | 2011-06-23 | Pressure sensing type anti-theft device of notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202286289U CN202084046U (en) | 2011-06-23 | 2011-06-23 | Pressure sensing type anti-theft device of notebook computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084046U true CN202084046U (en) | 2011-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202286289U Expired - Fee Related CN202084046U (en) | 2011-06-23 | 2011-06-23 | Pressure sensing type anti-theft device of notebook computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137156A (en) * | 2021-04-29 | 2021-07-20 | 江西卓尔金属设备集团有限公司 | Intelligent security cabinet |
-
2011
- 2011-06-23 CN CN2011202286289U patent/CN202084046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137156A (en) * | 2021-04-29 | 2021-07-20 | 江西卓尔金属设备集团有限公司 | Intelligent security cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20130623 |