CN206931534U - A kind of OTP tamper housing apparatus based on dry-reed tube switch - Google Patents
A kind of OTP tamper housing apparatus based on dry-reed tube switch Download PDFInfo
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- CN206931534U CN206931534U CN201720653013.8U CN201720653013U CN206931534U CN 206931534 U CN206931534 U CN 206931534U CN 201720653013 U CN201720653013 U CN 201720653013U CN 206931534 U CN206931534 U CN 206931534U
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- dry
- otp
- reed
- tube switch
- reed tube
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Abstract
It the utility model is related to a kind of OTP tamper housing apparatus based on dry-reed tube switch, including housing, dry-reed tube switch is provided with housing, dry-reed tube switch carries the magnetizable normally opened reed contact of two panels, and for two normally opened reed contacts by the power supply of connection OTP main circuits, housing is interior to be provided with permanent magnet, dry-reed tube switch is concatenated into the power supply of OTP main circuits, when circuit board is without housing, two normally opened reed contacts of dry-reed tube switch are normally opened, the electric power disconnections of OTP main circuits；After circuit board assembling shell, dry-reed tube switch closes in the presence of permanent magnet, the power on of OTP main circuits, system starts.After system starts, OTP downloads the individuation datas such as seed key, UTC.When OTP housings are removed, permanent magnet disappears away from dry-reed tube switch, magnetic force, and reed contact separates under elastic force effect, system cut-off, and the sensitive information such as seed key being stored in main control chip RAM disappears, and ensure that the important information of user is not compromised.
Description
Technical field
It the utility model is related to bank net system, especially a kind of OTP tamper housing apparatus based on dry-reed tube switch.
Background technology
OTP (one time password) is also known as e-token or dynamic token, is widely used in bank net system
System, logged in for user, transfer accounts etc. operation when, there is provided safety guarantee.Due to the special application scenarios of OTP, it is desirable to OTP hardware products
Must possess the design of tamper shell.Once product shell is removed, OTP will remove the sensitive informations such as seed key in time, to eliminate number
According to potential safety hazards such as leakages, otherwise easily cause the sensitive informations such as user key compromised.
Tongue tube (Reed Switch) is also referred to as reed capsule or magnetic reed switch, is a kind of special key of magnetosensitive, be dry spring after
The critical piece of electrical equipment and proximity switch.Tongue tube was in the Walter Ellwood by BTL in 1936
(Walter B.Ellwood) is invented.It is that tongue tube generally has that two soft magnetic materials make, without magnetic when the metal spring leaf that disconnects
Contact, some also have the 3rd reed as normally-closed contact.These reed contacts be encapsulated in filled with inert gas (such as nitrogen,
Helium etc.) or the glass tube of vacuum in, the leaf end of parallel encapsulation is overlapping in glass tube, and leaves certain interval or contact with each other
To form the normally opened or normally-closed contact of switch.Tongue tube is simpler than common mechanical construction of switch, small volume, speed are high, the work longevity
Life length；And compared with electronic switch, it has the features such as anti-loading impact capacity is strong again, and functional reliability is very high.
Switch inside present OTP is all normally closed switch, if OTP loses and taken apart by criminal, the main electricity of OTP
Road is not powered off in time, and the personal data being stored in master chip RAM is easily stolen to be taken, and causes the important information of user to be let out
Dew, consequence are hardly imaginable.
Utility model content
The purpose of this utility model is to solve the defects of prior art is present, there is provided a kind of based on dry-reed tube switch
OTP tamper housing apparatus.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of OTP tamper housing apparatus based on dry-reed tube switch, including housing, are provided with dry-reed tube switch in housing, do
Reed pipe switch carries the magnetizable normally opened reed contact of two panels, and two normally opened reed contacts pass through connection OTP main circuits
Power supply；
Permanent magnet is provided with housing, permanent magnet carries N poles and S poles, and dry-reed tube switch and housing are two stand-alone assemblies, are done
After reed pipe switch loads housing, two normally opened reed contacts of dry-reed tube switch are adsorbed and are in close contact by permanent magnet.
Further, above-mentioned a kind of OTP tamper housing apparatus based on dry-reed tube switch, two normally opened reed contacts, which tilt, to be set
Put and mutually stagger, permanent magnet is located at the side of dry-reed tube switch, the magnetic of inclined plane and permanent magnet where normally opened reed contact
The tangent line for feeling line is vertical or in a certain angle.
Further, above-mentioned a kind of OTP tamper housing apparatus based on dry-reed tube switch, where the normally opened reed contact
The tangent line of the magnetic induction line of inclined plane and permanent magnet is in that angle is more than 0 degree.
Further, a kind of above-mentioned OTP tamper housing apparatus based on dry-reed tube switch, permanent magnet are fixed on OTP housing
Interior, OTP is by housing, dry-reed tube switch and OTP main circuits composition.
Further, a kind of above-mentioned OTP tamper housing apparatus based on dry-reed tube switch, OTP main circuits carry master chip RAM
And indicator lamp.
The beneficial effects of the utility model are：Dry-reed tube switch is concatenated into the power supply of OTP main circuits by the device,
The enclosure interior position corresponding with dry-reed tube switch, place permanent magnet；When circuit board is without housing, the two of dry-reed tube switch
Individual normally opened reed contact is normally opened, the electric power disconnection of OTP main circuits；After circuit board assembling shell, dry-reed tube switch is forever
Closed in the presence of long magnet, the power on of OTP main circuits, system starts.
After system starts, OTP downloads the individuation datas such as seed key, UTC.Personal data is stored in master
In chip RAM, as long as ensureing that system does not power off, OTP individuation data would not be lost, when OTP housings are removed, forever
Long magnet disappears away from dry-reed tube switch, magnetic force, and reed contact separates under elastic force effect, system cut-off, is stored in master control core
The sensitive informations such as the seed key in piece RAM disappear, and ensure that the important information of user is not compromised.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is principle schematic of the present utility model.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1 and Figure 2, a kind of OTP tamper housing apparatus based on dry-reed tube switch, including housing 1, set in housing 1
There is dry-reed tube switch 2, dry-reed tube switch 2 carries the magnetizable normally opened reed contact 3 of two panels, and two normally opened reed contacts 3 pass through
The power supply 4 of connection OTP main circuits；
Permanent magnet 5 is provided with housing 1, permanent magnet 5 carries N poles and S poles, and dry-reed tube switch 2 is two independent group with housing 1
Part, after dry-reed tube switch 2 loads housing, two normally opened reed contacts 3 of dry-reed tube switch 2 are adsorbed and closely connect by permanent magnets 5
Touch.
In the utility model, two normally opened reed contacts 3 are obliquely installed and mutually staggered, and permanent magnet 5 is located at tongue tube
The side of switch 2, the inclined plane where normally opened reed contact 3 is vertical or in a certain angle with the tangent line of the magnetic induction line of permanent magnet 5,
Wherein, the tangent line of the inclined plane where normally opened reed contact 3 and the magnetic induction line of permanent magnet 5 be in angle more than 0 degree, mainly because
The absorption force direction caused by permanent magnet 5 is the tangential direction of the magnetic induction line of region, the inclination at the normally opened place of reed contact 3
The tangent line of face and the magnetic induction line of permanent magnet 5 is in that two normally opened reed contacts 3 can just be pasted by absorption affinity after angle is more than 0 degree
It is combined.
Further, permanent magnet 5 is fixed in OTP housing 1, and OTP is by housing 1, dry-reed tube switch 2 and OTP main circuits
Composition, OTP main circuits carry master chip RAM6 and indicator lamp 7.
After assembling, dry-reed tube switch 2 is concatenated into the power supply 4 of OTP main circuits by the device, in enclosure interior and dry spring
Pipe switchs corresponding position, places permanent magnet 5；When circuit board is without housing, two normally opened reeds of dry-reed tube switch 2 touch
Point 3 is normally opened, the electric power disconnection of OTP main circuits；After circuit board assembling shell 1, dry-reed tube switch 2 is in permanent magnet 5
Effect is lower to be closed, the power on of OTP main circuits, system starts.
After system starts, OTP downloads the individuation datas such as seed key, UTC.Personal data is stored in master
In chip RAM6, as long as ensureing that system does not power off, OTP individuation data would not be lost, when OTP housings are removed,
Permanent magnet 5 disappears away from dry-reed tube switch 2, magnetic force, and reed contact 3 separates under elastic force effect, system cut-off, is stored in master
Control the sensitive informations such as the seed key in chip RAM6 to disappear, ensure that the important information of user is not compromised.
The utility model is not limited to above-mentioned preferred forms, and anyone can draw under enlightenment of the present utility model
Other various forms of products, however, make any change in its shape or structure, it is every that there is same as the present application or phase
Approximate technical scheme, all falls within the scope of protection of the utility model.
Claims (5)
1. a kind of OTP tamper housing apparatus based on dry-reed tube switch, including housing, are provided with dry-reed tube switch in housing, it is special
Sign is that dry-reed tube switch carries the magnetizable normally opened reed contact of two panels, and two normally opened reed contacts pass through connection OTP
The power supply of main circuit；Permanent magnet is provided with housing, permanent magnet carries N poles and S poles, and dry-reed tube switch is two independent group with housing
Part, after dry-reed tube switch loads housing, two normally opened reed contacts of dry-reed tube switch are adsorbed and are in close contact by permanent magnet.
2. a kind of OTP tamper housing apparatus based on dry-reed tube switch according to claim 1, it is characterised in that two often
Open reed contact to be obliquely installed and mutually stagger, permanent magnet is located at the side of dry-reed tube switch, inclining where normally opened reed contact
Inclined-plane is vertical or in a certain angle with the tangent line of the magnetic induction line of permanent magnet.
3. a kind of OTP tamper housing apparatus based on dry-reed tube switch according to claim 2, it is characterised in that described normal
The tangent line for opening the magnetic induction line of the inclined plane and permanent magnet where reed contact is in that angle is more than 0 degree.
4. a kind of OTP tamper housing apparatus based on dry-reed tube switch according to any one of claims 1 to 3, its feature exist
In permanent magnet is fixed in OTP housing, and OTP is by housing, dry-reed tube switch and OTP main circuits composition.
A kind of 5. OTP tamper housing apparatus based on dry-reed tube switch according to claim 4, it is characterised in that the main electricity of OTP
Road carries master chip RAM and indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653013.8U CN206931534U (en) | 2017-06-06 | 2017-06-06 | A kind of OTP tamper housing apparatus based on dry-reed tube switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653013.8U CN206931534U (en) | 2017-06-06 | 2017-06-06 | A kind of OTP tamper housing apparatus based on dry-reed tube switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206931534U true CN206931534U (en) | 2018-01-26 |
Family
ID=61346019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720653013.8U Active CN206931534U (en) | 2017-06-06 | 2017-06-06 | A kind of OTP tamper housing apparatus based on dry-reed tube switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206931534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113741244A (en) * | 2021-08-06 | 2021-12-03 | 中国船舶重工集团公司七五0试验场 | Electric control device for underwater high-speed navigation body |
-
2017
- 2017-06-06 CN CN201720653013.8U patent/CN206931534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113741244A (en) * | 2021-08-06 | 2021-12-03 | 中国船舶重工集团公司七五0试验场 | Electric control device for underwater high-speed navigation body |
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