CN202404349U - Uncovering-preventing device - Google Patents
Uncovering-preventing device Download PDFInfo
- Publication number
- CN202404349U CN202404349U CN2011205538826U CN201120553882U CN202404349U CN 202404349 U CN202404349 U CN 202404349U CN 2011205538826 U CN2011205538826 U CN 2011205538826U CN 201120553882 U CN201120553882 U CN 201120553882U CN 202404349 U CN202404349 U CN 202404349U
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- China
- Prior art keywords
- contact
- hood
- opening device
- control module
- detection module
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an uncovering-preventing device, which is used for detecting the opening condition of a box cover and a box body, wherein the box cover is fixed on the box body through a third bolt. The uncovering-preventing device comprises a switching mechanism and a detection module, wherein the structure of the switching mechanism is as follows: an electrical signal is generated when the third bolt is loosened, and the detection module records the uncovering information according to the electrical signal. The uncovering-preventing device is capable of reducing the possibility that the film is pirated, and preventing film projection equipment from being artificially opened. Once the film projection equipment is opened, a film projection function of the film projection equipment is stopped, the time log that the film projection equipment is opened and the time log that the film projection equipment is opened for restoration are recorded so as to be well documented, and the safety of the film projection is improved.
Description
Technical field
The utility model relates to cinematographic equipment, particularly has 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 the utility model provides a kind of cinematographic equipment that comprises anti-hood-opening device.
The technical scheme of the utility model 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; This second contact is connected with this detection module, and this first contact and second contacting produce said electric signal when this case lid and casing are opened, and gives this detection module through this second contact with said electrical signal transfer.
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.
The positive progressive effect of the utility model 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 the anti-hood-opening device of the utility model.
Fig. 2 is the structural representation of mechanical switch in the device of Fig. 1.
Fig. 3 is according to the utility model, comprises the projection equipment synoptic diagram of device shown in Figure 1.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is elaborated.
Projection equipment refers to projector and/or movie services device.The projection equipment that comprises anti-hood-opening device of the utility model 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.
Mechanical switch 120 bottoms are provided with spring 122, below this mechanical switch 120, are provided with two electrical contacts in addition, first contact, 160 ground connection wherein, and second contact 170 is connected to this detection module 200.
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 utility model is described according to its preferred implementation, there are the change, displacement and the various substitute equivalents that fall in the utility model scope.Here the example that provides only is illustrative, rather than to the restriction of the utility model.
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; This first contact and second contacting produce said electric signal when this case lid and casing are opened, and give this detection module through this second contact with said electrical signal transfer.
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 |
|---|---|---|---|
| CN2011205538826U CN202404349U (en) | 2011-12-27 | 2011-12-27 | Uncovering-preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205538826U CN202404349U (en) | 2011-12-27 | 2011-12-27 | Uncovering-preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404349U true CN202404349U (en) | 2012-08-29 |
Family
ID=46701989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205538826U Withdrawn - After Issue CN202404349U (en) | 2011-12-27 | 2011-12-27 | Uncovering-preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520572A (en) * | 2011-12-27 | 2012-06-27 | 上海文广科技（集团）有限公司 | Cover opening prevention device |
-
2011
- 2011-12-27 CN CN2011205538826U patent/CN202404349U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520572A (en) * | 2011-12-27 | 2012-06-27 | 上海文广科技（集团）有限公司 | Cover opening prevention device |
| CN102520572B (en) * | 2011-12-27 | 2014-03-26 | 上海文广科技（集团）有限公司 | Cover opening prevention device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |