CN102520572A - Cover opening prevention device - Google Patents
Cover opening prevention device Download PDFInfo
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- CN102520572A CN102520572A CN2011104437292A CN201110443729A CN102520572A CN 102520572 A CN102520572 A CN 102520572A CN 2011104437292 A CN2011104437292 A CN 2011104437292A CN 201110443729 A CN201110443729 A CN 201110443729A CN 102520572 A CN102520572 A CN 102520572A
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Abstract
The invention discloses a cover opening prevention device, which is used for detecting opening of a case cover and a case body; and the case cover is fixed on the case body by a third screw. The cover opening prevention device comprises a switch mechanism and a detection module. And the switch mechanism is characterized in that: when the third screw is loosened, an electrical signal is generated; and the detection module records cover opening information according to the electrical signal. According to the invention, possibility that a film is pirated can be reduced; and thus it can be prevented that a film projection device is opened artificially. Once the device is opened, a film play function of the projection device will be stopped as well as a time log of opening of the projection device and a time log of repairing for the opening of the projection device are recorded; therefore, all the operations can be well documented, thereby improving security of the film projection.
Description
Technical field
The present invention relates to cinematographic equipment, particularly have the cinematographic equipment of anti-hood-opening device.
Background technology
1.3K homemade film is meant the 1.3K digital movie; Be to be to solve the small and medium-sized cities a solution that rare problem proposes of seeing a film by SARFT(The State Administration of Radio and Television); Utilize the digital film projector cost little, the copy expense is low, and equipment drops into the little a kind of digital movie technology that gets advantage and grow up.
But on the 1.3K film market, behind some homemade large stretch of broadcast couple of days, just possibly occur pirate film on the market, have a strong impact on support and the confidence of film distribution side, and then had influence on common people's entertainment life of small and medium-sized cities 1.3k.Need prevent projection equipment to be opened for this reason, reduce film by the possibility of piracy.
The mode that the lid open-close of existing cabinet detects generally has following several method: pure mechanical means, photoelectric detecting method, electromechanical detection method, mechanical switch add the electronics detection method.The whole bag of tricks differs from one another and is not enough, the purpose that general equipment to be detected as required needs this function to reach, and select suitable method.
Adopt the method for mechanical switch and detection of electrons to the uncap requirement that detects of 1.3K movie services device and 1.3K projector.And other method as is selected the square law device of pure machinery for use, structure more complicated first, cost is higher, second in case uncap back producer can not remote recovery.If adopt the device of photoelectric detecting method, then the optoelectronic switch power consumption is big, and under the situation for outage, battery is difficult to keep for a long time.Chinese patent discloses name and has been called " rotation angle detection apparatus " and belongs to a kind of electromechanical detection method; Though power consumption is lower than photoelectric detecting method; But this device carries out the detection of steering manipulation angle with magnetoresistive transducer with the calculation process of the CPU that links to each other; Belong to the measurement of angle field, and electronic equipment is complicated, cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of cinematographic equipment that comprises anti-hood-opening device.
Technical scheme of the present invention is following:
A kind of anti-hood-opening device; Be used to detect opening of case lid and casing; This case lid passes through the 3rd screw retention on this casing; Should comprise switching mechanism and detection module by anti-hood-opening device, this switching mechanism is configured to when the 3rd screw unclamps, produce electric signal, and this detection module writes down the information of uncapping according to this electric signal.
Wherein, This switching mechanism comprises first contact and second contact, this first contact ground connection, and this second contact is connected with this detection module; Opening when this case lid and casing is that this first contact and second contacting produce said electric signal, and transmits this this detection module through this second contact.
This switching mechanism also comprises the U-shaped support, and on this casing, mechanical switch is fixed on this U-shaped support through first screw this U-shaped support through second screw retention, and this mechanical switch bottom is provided with spring, and the 3rd screw is against this mechanical switch.
This detection module comprises control module and the storage unit and the clock unit that link to each other with this control module, and this second contact is connected with this control module.
This control module is configured to when this second contact is communicated with this first contact, will from this clock unit obtains turn-on time information and this connection information stores this storage unit.
Whether this control module detects this first and second contact and connects.
This device also comprises battery unit, and it is connected with this control module.
Positive progressive effect of the present invention is: reduce film by the possibility of piracy, prevent that cinematographic equipment is by artificial opening.In case equipment is opened, the movie function of projection equipment will be stopped, and the time daily record that is opened of record projection equipment is opened with projection equipment and the time daily record of repairing, and make to have good grounds the security of increase film projection.
Description of drawings
Fig. 1 is the synoptic diagram according to anti-hood-opening device of the present invention.
Fig. 2 is the structural representation of mechanical switch in the device of Fig. 1.
Fig. 3 is according to the present invention, comprises the projection equipment synoptic diagram of device shown in Figure 1.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the present invention is elaborated.
Projection equipment refers to projector and/or movie services device.The projection equipment that comprises anti-hood-opening device of the present invention shown in Fig. 3.
As shown in Figure 1, a kind of anti-hood-opening device 10 is used to detect opening of case lid 30 and casing 20, comprises mechanical switch mechanism 100 and detection module 200.
Wherein, as shown in Figure 2, this switching mechanism 100 comprises U-shaped support 110, and mechanical switch 120 is fixed on this support 110 through first screw 130.U-shaped support 110 is fixed on the casing 20 (for example, the projector shown in Figure 3 and/or the casing of server) through second screw 140.Case lid 30 (for example, the projector shown in Figure 3 and/or the case lid of movie services device) is fixed on this casing 20 through the 3rd screw 150.
When casing 20 and case lid 30 closures, this mechanical switch 120 is tightened and withstood to the 3rd screw 150, then this spring 122 pressurizeds compression, and this moment, this mechanical switch 120 was a normally off, was not communicated with between this first and second contact.When casing 20 and case lid 30 were opened, the 3rd screw 150 unclamped, and then mechanical switch 120 is released, and the effect that receives spring 122 moves up, and then first and second contacts will be communicated with.
As shown in Figure 1, storage unit 220 and clock unit 230 that this detection module 200 comprises control module 210 and links to each other with this control module.This second contact 170 is connected with this control module 210; When this second contact 170 is communicated with this first contact 160; This control module 210 should be connected information stores in this storage unit 220, and obtained information turn-on time from this clock unit 230, in the lump storage.
This device also comprises battery unit 300, so that under the situation of outage, is this device power supply.Like this, though
Fig. 3 illustrates the projection equipment 50 that comprises this device 10, can be projector 300 and/or movie services device 400.Wherein, this projector 300 respectively establishes a switching mechanism 100 and detection module 200 with movie services device 400.
When projector and Play Server are all switched on the beginning movie; Play Server goes to inquire about the information of storage unit 220 through control module 210; In case find the information that storage unit has mechanical switch to have for 220 li to open, Play Server then stops the function of movie, and prompting can not movie on the man-machine interface of movie server; And provide error code, with prompting cinematographer's movie player or projector or both are by illegal invasion.
Equally, under the situation that projector and Play Server are all switched on, the pick-up unit of uncapping charges to battery unit respectively by the electric energy work of projector and movie server simultaneously.In case the 3rd screw 150 unclamped, the control module of detection module records 220 li of storage unit to the information of opening of mechanical switch immediately, and arrives 220 li of storage unit to the time keeping of clock unit 230.The information that the movie server inquires 220 li of storage unit through control module 210 is mechanical switch when opening, and then point out immediately can not movie for man-machine interface, and projector or Play Server or both are by illegal invasion.
No matter whether projector and Play Server switch on, when they the mechanical switch of the pick-up unit of uncapping when being off-state, movie server normal play film.But when projector and movie player are excluded illegal invasion, can remove the information of opening of 220 li mechanical switchs of storage unit through being remotely logged into the movie server.It is thus clear that cabinet switch and detection module are installed in respectively in projector and the movie server, and projector uncap detect recovery logs and movie server uncap the detection recovery logs all through serial ports by the unified management of movie server.
Although the present invention describes according to its preferred implementation, there are the change, displacement and the various substitute equivalents that fall in the scope of the invention.Here the example that provides only is illustrative, rather than limitation of the present invention.
For the sake of simplicity, this instructions has omitted the description to known technology.
Claims (7)
1. anti-hood-opening device; Be used to detect opening of case lid and casing; This case lid on this casing, is characterized in that this anti-hood-opening device comprises switching mechanism and detection module through the 3rd screw retention; This switching mechanism is configured to when the 3rd screw unclamps, produce electric signal, and this detection module writes down the information of uncapping according to this electric signal.
2. anti-hood-opening device according to claim 1; It is characterized in that; Wherein this switching mechanism comprises first contact and second contact, this first contact ground connection, and this second contact is connected with this detection module; Opening when this case lid and casing is that this first contact and second contacting produce said electric signal, and transmits this this detection module through this second contact.
3. anti-hood-opening device according to claim 2; It is characterized in that; This switching mechanism also comprises the U-shaped support, and on this casing, mechanical switch is fixed on this U-shaped support through first screw this U-shaped support through second screw retention; This mechanical switch bottom is provided with spring, and the 3rd screw is against this mechanical switch.
4. anti-hood-opening device according to claim 2 is characterized in that, this detection module comprises control module and the storage unit and the clock unit that link to each other with this control module, and this second contact is connected with this control module.
5. anti-hood-opening device according to claim 4 is characterized in that, this control module is configured to when this second contact is communicated with this first contact, will from this clock unit obtains turn-on time information and this connection information stores this storage unit.
6. anti-hood-opening device according to claim 2 is characterized in that, whether this control module detects this first and second contact and connect.
7. anti-hood-opening device according to claim 2 is characterized in that this device also comprises battery unit, and it is connected with this control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110443729.2A CN102520572B (en) | 2011-12-27 | 2011-12-27 | Cover opening prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110443729.2A CN102520572B (en) | 2011-12-27 | 2011-12-27 | Cover opening prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102520572A true CN102520572A (en) | 2012-06-27 |
| CN102520572B CN102520572B (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110443729.2A Active CN102520572B (en) | 2011-12-27 | 2011-12-27 | Cover opening prevention device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102520572B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108700628A (en) * | 2017-09-20 | 2018-10-23 | 深圳市隐秀科技有限公司 | A kind of detection device and the portable electronic device with the detection device |
| CN109154795A (en) * | 2017-09-20 | 2019-01-04 | 深圳市隐秀科技有限公司 | Electronic watch |
| CN109443531A (en) * | 2018-11-06 | 2019-03-08 | 中国电影科学技术研究所 | A kind of air-tight state detection device and a kind of projection equipment |
| CN111026594A (en) * | 2019-12-12 | 2020-04-17 | 浪潮商用机器有限公司 | Server unpacking detection system |
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| CN2236004Y (en) * | 1995-05-29 | 1996-09-25 | 欧阳再遂 | Multi-purpose anti-theft door-lock |
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| CN101837767A (en) * | 2010-05-28 | 2010-09-22 | 石磐 | Combined burglar alarm for automotive equipment |
| CN202026548U (en) * | 2011-01-18 | 2011-11-02 | 于步胜 | Alarm, power-off and locking device used in case of uncovering |
| CN202404349U (en) * | 2011-12-27 | 2012-08-29 | 上海文广科技（集团）有限公司 | Uncovering-preventing device |
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2011
- 2011-12-27 CN CN201110443729.2A patent/CN102520572B/en active Active
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| JPH07103901A (en) * | 1993-09-30 | 1995-04-21 | Daikin Ind Ltd | Protecting device for photodetector element of optical measuring apparatus |
| CN2236004Y (en) * | 1995-05-29 | 1996-09-25 | 欧阳再遂 | Multi-purpose anti-theft door-lock |
| CN1295641A (en) * | 1998-01-02 | 2001-05-16 | 石金青叶公司 | Dead bolt combination lock and push-pull lock, each with integrated re-locking features, lock with auxiliary security features, and lock keypad with tamper detection and response features |
| CN201307319Y (en) * | 2008-10-22 | 2009-09-09 | 中国航天科技集团公司第五研究院第五一三研究所 | Hall anti-theft alarm |
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| CN202026548U (en) * | 2011-01-18 | 2011-11-02 | 于步胜 | Alarm, power-off and locking device used in case of uncovering |
| CN202404349U (en) * | 2011-12-27 | 2012-08-29 | 上海文广科技（集团）有限公司 | Uncovering-preventing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108700628A (en) * | 2017-09-20 | 2018-10-23 | 深圳市隐秀科技有限公司 | A kind of detection device and the portable electronic device with the detection device |
| CN109154795A (en) * | 2017-09-20 | 2019-01-04 | 深圳市隐秀科技有限公司 | Electronic watch |
| WO2019056196A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳市隐秀科技有限公司 | Detection device and portable electronic device having same |
| CN109443531A (en) * | 2018-11-06 | 2019-03-08 | 中国电影科学技术研究所 | A kind of air-tight state detection device and a kind of projection equipment |
| CN111026594A (en) * | 2019-12-12 | 2020-04-17 | 浪潮商用机器有限公司 | Server unpacking detection system |
| CN111026594B (en) * | 2019-12-12 | 2023-09-26 | 浪潮商用机器有限公司 | Server unpacking detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102520572B (en) | 2014-03-26 |
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