CN204614126U - A kind of laboratory anti-theft device - Google Patents
A kind of laboratory anti-theft device Download PDFInfo
- Publication number
- CN204614126U CN204614126U CN201520321404.0U CN201520321404U CN204614126U CN 204614126 U CN204614126 U CN 204614126U CN 201520321404 U CN201520321404 U CN 201520321404U CN 204614126 U CN204614126 U CN 204614126U
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- China
- Prior art keywords
- infrared
- laboratory
- circuit
- microcontroller
- door lock
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Abstract
The utility model discloses a kind of laboratory anti-theft device, the pulsed triggering circuit comprising microcontroller and be attached thereto respectively, door lock state testing circuit and warning circuit, pulsed triggering circuit comprises two pairs of infrared tubes, two pairs of infrared tubes are separately positioned on the inner side and outer side of laboratory door, often pair of infrared tube comprises infrared transmitter and infrared remote receiver, infrared transmitter and corresponding infrared remote receiver are separately positioned on the both sides of laboratory door and are positioned on same level line, two pairs of infrared tubes gather infrared signal and send microcontroller to, door lock state testing circuit gathers the status signal of laboratory door lock and sends microcontroller to, microcontroller is according to the status signal of the infrared signal received and door lock, control warning circuit works.The utility model is reported to the police by the state of the indoor number of test experience and lock core, ensure that the property safety in laboratory.
Description
Technical field
The utility model belongs to intelligent anti-theft technical field, particularly sees a kind of laboratory anti-theft device.
Background technology
At present, structure all more complicated of the anti-theft device that market exists, power is also larger, and needs Alternating Current Power Supply, and condition restriction is harsh, does not have just cannot use during supply socket when door is other.Often deposit some valuable instrument, equipment in the laboratory of a lot of colleges and universities, but due to the loose management of university, often have a lot of social lawless person to covet expensive instrument in laboratory, if do not add attention very likely cause great economic loss.Current laboratory in colleges and universities often has special managerial personnel and is responsible for arranging, locking a door, but the thing finally causing laboratory stolen that neglects locking the door also happens occasionally because of individual's carelessness.
Utility model content
In order to solve the technical matters that above-mentioned background technology proposes, the utility model aims to provide a kind of laboratory anti-theft device, is reported to the police, ensure that the property safety in laboratory by the state of the indoor number of test experience and lock core.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of laboratory anti-theft device, the pulsed triggering circuit comprising microcontroller and be attached thereto respectively, door lock state testing circuit, warning circuit and reset key, described pulsed triggering circuit comprises two pairs of infrared tubes, described two pairs of infrared tubes are separately positioned on the inner side and outer side of laboratory door, often pair of infrared tube comprises infrared transmitter and infrared remote receiver, described infrared transmitter and corresponding infrared remote receiver are separately positioned on the both sides of laboratory door and are positioned on same level line, described two pairs of infrared tubes gather infrared signal and send microcontroller to, described door lock state testing circuit gathers the status signal of laboratory door lock and sends microcontroller to, microcontroller is according to the status signal of the infrared signal received and door lock, control warning circuit works.
Wherein, above-mentioned pulsed triggering circuit also comprises twin voltage comparer and not circuit, and the twin voltage comparer of described two pairs of infrared tubes through connecting successively is connected with microcontroller with not circuit.
Wherein, the model of above-mentioned twin voltage comparer is LM393, and the model of not circuit is 74HC04.
Wherein, above-mentioned door lock state testing circuit comprises the NE555 circuit be connected with microcontroller.
Wherein, above-mentioned warning circuit comprises the hummer and LED that are connected with microcontroller respectively.
Wherein, above-mentioned microcontroller is 89C52 single-chip microcomputer.
Adopt the beneficial effect that technique scheme is brought:
The utility model judges whether to report to the police by the indoor number of test experience and laboratory door lock state, more more reasonable than the scheme of single inspection door lock, only have as laboratory nobody and door lock is not locked time, adopt warning reminding; The utility model structure is simple, adopts common digit chip, does not need 220V Alternating Current Power Supply, easy to operate, is easy to promote.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is scheme of installation of the present utility model.
Fig. 3 is physical circuit figure of the present utility model.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
System architecture diagram of the present utility model as shown in Figure 1, a kind of laboratory anti-theft device, comprises microcontroller and the pulsed triggering circuit be attached thereto respectively, door lock state testing circuit, warning circuit and reset key.
Scheme of installation of the present utility model as shown in Figure 2, pulsed triggering circuit comprises two pairs of infrared tubes, described two pairs of infrared tubes are separately positioned on the inner side and outer side of laboratory door, often pair of infrared tube comprises infrared transmitter and infrared remote receiver, and described infrared transmitter and corresponding infrared remote receiver are separately positioned on the both sides of laboratory door and are positioned on same level line.
In the present embodiment, pulsed triggering circuit also comprises pulsed triggering circuit and also comprises twin voltage comparer LM393 and not circuit 74HC04, and the twin voltage comparer of two pairs of infrared tubes through connecting successively is connected with microcontroller with not circuit.When not having barrier between infrared transmitting tube and infrared receiving tube, the infrared light that infrared transmitting tube sends is received by infrared receiving tube, and now infrared tube exports high level, and after LM393 and 74HC04 process, produces+5V high level and send microcontroller to; When not having barrier between infrared transmitting tube and infrared receiving tube, the infrared light that infrared transmitting tube sends can not be received by infrared receiving tube, now infrared tube output low level, and after LM393 and 74HC04 process, produces 0V low level and send single-chip microcomputer to.
In the present embodiment, door lock state testing circuit comprises NE555 circuit, and the Enable Pin of this NE555 circuit is provided with two pasters, paster is arranged on door lock, when on door lock, two pasters all contact with metal lock core, i.e. two paster conductings, NE555 circuit is enable, NE555 circuit is to microcontroller output low level, and when door lock is not locked, two pasters do not contact with lock core, NE555 Enable Pin disconnects, and NE555 circuit exports high level to microcontroller.
In the present embodiment, warning circuit comprises the hummer and LED that are attached thereto respectively.
In the present embodiment, microcontroller is 89C52 single-chip microcomputer.
Below in conjunction with Fig. 2 and Fig. 3, principle of work of the present utility model is described:
Press switch, 89C52 single-chip microcomputer powers on, whether door lock state testing circuit detects door lock and locks, when the output terminal VO of NE555 circuit is to the P2.1 mouth input high level of single-chip microcomputer, namely laboratory door is unlocked, now Single-chip Controlling two pairs of infrared tube work, if the first output low level of the infrared tube of laboratory outer side of door, defeated low level after infrared tube inside the door of laboratory, then illustrating has a people to enter laboratory, the counter+1 of single-chip microcomputer, if the first output low level of the infrared tube inside the door of laboratory, defeated low level after the infrared tube of laboratory outer side of door, then illustrating has a people to walk out laboratory, the counter-1 of single-chip microcomputer, with the number of these test experience indoor.When in laboratory, last people walks out laboratory, and now door is unlocked, then single-chip microcomputer starts hummer and LED warning, reminds related personnel to lock a door.User closes hummer and LED by pressing reset key.
Above embodiment is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.
Claims (6)
1. a laboratory anti-theft device, it is characterized in that: the pulsed triggering circuit comprising microcontroller and be attached thereto respectively, door lock state testing circuit and warning circuit, described pulsed triggering circuit comprises two pairs of infrared tubes, described two pairs of infrared tubes are separately positioned on the inner side and outer side of laboratory door, often pair of infrared tube comprises infrared transmitter and infrared remote receiver, described infrared transmitter and corresponding infrared remote receiver are separately positioned on the both sides of laboratory door and are positioned on same level line, described two pairs of infrared tubes gather infrared signal and send microcontroller to, described door lock state testing circuit gathers the status signal of laboratory door lock and sends microcontroller to, microcontroller is according to the status signal of the infrared signal received and door lock, control warning circuit works.
2. a kind of laboratory anti-theft device according to claim 1, it is characterized in that: described pulsed triggering circuit also comprises twin voltage comparer and not circuit, the twin voltage comparer of described two pairs of infrared tubes through connecting successively is connected with microcontroller with not circuit.
3. a kind of laboratory anti-theft device according to claim 2, it is characterized in that: the model of described twin voltage comparer is LM393, the model of not circuit is 74HC04.
4. a kind of laboratory anti-theft device according to claim 1, is characterized in that: described door lock state testing circuit comprises the NE555 circuit be connected with microcontroller.
5. a kind of laboratory anti-theft device according to claim 1, is characterized in that: described warning circuit comprises the hummer and LED that are connected with microcontroller respectively.
6. a kind of laboratory anti-theft device according to claim 1, is characterized in that: described microcontroller is 89C52 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321404.0U CN204614126U (en) | 2015-05-19 | 2015-05-19 | A kind of laboratory anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321404.0U CN204614126U (en) | 2015-05-19 | 2015-05-19 | A kind of laboratory anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204614126U true CN204614126U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520321404.0U Expired - Fee Related CN204614126U (en) | 2015-05-19 | 2015-05-19 | A kind of laboratory anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204614126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405238A (en) * | 2015-11-27 | 2016-03-16 | 南京邮电大学 | Dormitory safety management system based on infrared technology and wireless sensing technology |
| CN112133079A (en) * | 2019-06-25 | 2020-12-25 | 深圳拓邦股份有限公司 | Infrared detection circuit and method |
-
2015
- 2015-05-19 CN CN201520321404.0U patent/CN204614126U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405238A (en) * | 2015-11-27 | 2016-03-16 | 南京邮电大学 | Dormitory safety management system based on infrared technology and wireless sensing technology |
| CN105405238B (en) * | 2015-11-27 | 2018-08-17 | 南京邮电大学 | A kind of dormitory safety management system based on infrared technique and wireless sensor technology |
| CN112133079A (en) * | 2019-06-25 | 2020-12-25 | 深圳拓邦股份有限公司 | Infrared detection circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20170519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |