CN107820626A - POS and POS physical protection device - Google Patents
POS and POS physical protection device Download PDFInfo
- Publication number
- CN107820626A CN107820626A CN201780001539.0A CN201780001539A CN107820626A CN 107820626 A CN107820626 A CN 107820626A CN 201780001539 A CN201780001539 A CN 201780001539A CN 107820626 A CN107820626 A CN 107820626A
- Authority
- CN
- China
- Prior art keywords
- pos
- protection device
- parasitic capacitance
- conductive carbon
- solder mask
- Prior art date
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/86—Secure or tamper-resistant housings
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Elimination Of Static Electricity (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Abstract
A kind of POS and POS physical protection device, inside POS, including conductive carbon granules (5), solder mask (1), parasitic capacitance (2) and ground plane (3)；Solder mask (1), parasitic capacitance (2) and ground plane (3) are on pcb board (4)；Two pole plates of parasitic capacitance (2) connect solder mask (1) and ground plane (3) respectively；Conductive carbon granules (5) is extruded by POS shell and contacted with solder mask (1), conductive carbon granules (5) connection POS power supply (7)；Solder mask (1) be provided with connection POS processor input output port (8).
Description
Technical field
The present invention relates to POS field, especially relates to a kind of POS and POS physical protection device.
Background technology
POS is a kind of point-of-sale terminal with clearing of account function, be widely used in supermarket, chain store, hypermarket,
The places such as restaurant.Because being related to the pecuniary exchange of bank card etc., there is very high requirement to its security performance, it is necessary to ensure
Significant data such as key inside POS etc. is not stolen.
The physical protection device of POS now, using physical switch, not only cost is high for physical switch, Er Qieti
Product is also larger, is also easy to cause false triggering, causes reliability poor.
The content of the invention
The main object of the present invention is somebody's turn to do to provide a kind of POS physical protection device of small volume good reliability and having
The POS of POS physical protection device.
The present invention proposes a kind of POS physical protection device, inside the POS, including conductive carbon granules, welding resistance
Layer, parasitic capacitance and ground plane；Solder mask, parasitic capacitance and ground plane are on pcb board；Two poles of parasitic capacitance
Plate connects solder mask and ground plane respectively；Conductive carbon granules is extruded by POS shell and contacted with solder mask, conductive carbon granules connection
POS power supply；Solder mask be provided with input output port, input output port connection POS processor, processor detection post
The charge status of raw electric capacity.
Further, conductive carbon granules is cylinder, and POS shell and solder mask are supported in its both ends respectively.
Further, the diameter of section of conductive carbon granules arrives 1.5mm for 1.
Further, the capacitance of parasitic capacitance is 5pf to 20pf.
Further, conductive carbon granules is connected by resistance with POS power supply, and resistance is 5 to 10 million.
Further, when input output port be arranged to export, and export low level, now parasitic capacitance discharge；It is defeated
Enter output port be configured to the pattern of floating input, enabled and configure high level interruption, now parasitic capacitance starts to charge up.
Further, the side-wall outer side of the vertical solder mask of conductive carbon granules is sky.
A kind of POS, including above-mentioned POS physical protection device.
POS and POS physical protection device of the present invention forms touching switch with solder mask using conductive carbon granules and replaced now
Some physical switch, small volume and cheap can be provided with multiple as far as possible in the confined space, form multiple spot cloth
It is anti-, the security of POS, and its very light weight are improved, is not likely to produce when rocking and touches by mistake, the safety of POS
Property is also more preferable.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of POS physical protection device one of the present invention；
Fig. 2 is Fig. 1 schematic equivalent circuit.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1-2, the embodiment of POS physical protection device one of the present invention, including conductive carbon granules 5, solder mask 1, parasitism
Electric capacity 2 and ground plane 3；POS physical protection device is inside POS, solder mask 1, parasitic capacitance 2 and ground plane 3
On pcb board 4；Two pole plates of parasitic capacitance 2 connect solder mask 1 and ground plane 3 respectively；Conductive carbon granules 5 is by POS
Shell extruding contacts with solder mask 1, and conductive carbon granules 5 connects POS power supply 7；Solder mask 1 be provided with input output port 8, input
Output port 8 be GPIO, input output port 8 connect POS processor, processor detect parasitic capacitance 2 discharge and recharge
Situation.
Reference picture 2, wherein conductive carbon granules 5 and solder mask 1 form touching switch 9, POS conductive carbon granules 5 under normal circumstances
Extruded by shell and contacted with solder mask 1, touching switch 9 closes；After housing is removed, conductive carbon granules 5 removes housing extruding can be with
Solder mask 1 separates, and touching switch 9 disconnects, and when touching switch 9 disconnects, processor can monitor exception, and then judge POS
It is dangerous.
Meanwhile the time reads code as the secure firmware of processor (CPU), it is necessary to could be downloaded after signature verification, no
It can arbitrarily be distorted, ensure the security of POS.
Time, which reads code, includes 2 fully charged required time of parasitic capacitance under normal circumstances, the error range that the time allows
Etc. information.Time reads the 2 actual charging interval of code comparison's parasitic capacitance, if the 2 actual charging interval of parasitic capacitance is in error
Within the scope of permission, it can estimate that POS is normal, if the scope that the 2 actual charging interval of parasitic capacitance does not allow in error
Within, it is abnormal POS can be estimated.
Touching switch 9 closes at nominal conditions, when GPIO is arranged to export and exports low level, parasitic capacitance 2
It is zero to be discharged to the electricity of parasitic capacitance 2；When GPIO is arranged into floating input pattern, POS power supply 7 is that parasitic capacitance 2 charges
And start the timing charging interval, when parasitic capacitance 2 is fully charged, charging behavior is interrupted automatically, and this timing terminates, the charging interval
Data be sent to processor, by the charging interval compared with the setting time in processor, by the charging interval change can sentence
Whether the capacitance of disconnected parasitic capacitance 2 changes, and when electric capacitance change exceeds the permission excursion to set up an office, judges the POS
It is no longer safe.
The charge status of parasitic capacitance 2 includes whether parasitic capacitance 2 can charge and the fully charged institute's used time of parasitic capacitance 2
Between.Processor judges whether to occur that conductive carbon granules 5 departs from and soft-touch control closes feelings by the charge status of parasitic capacitance 2
Under condition, whether the capacitance of parasitic capacitance 2 changes；POS is likely to be when the capacitance of parasitic capacitance 2 changes
It is filled after the materials such as glue fix conductive carbon granules 5 and removes housing, POS is represented in the presence of risk is adapted, not in safety
Should proper treatment, the application risk of POS can be reduced by the monitoring to POS physical protection device.
In the present embodiment, conductive carbon granules 5 is cylinder, and POS shell and solder mask 1 are supported in its both ends respectively.It is conductive
The diameter of section of carbon granules 5 arrives 1.5mm for 1.The volume very little of POS physical protection device, cost have dropped with respect to physical switch
It is low, multiple POS physical protection devices can be set in a POS, reduce POS physical protection device by for processing
Risk.
The capacitance of parasitic capacitance 2 is 5pf to 20pf.Capacitance very little can be sharper to electric capacitance change reflection, more
Add and be not easy by higher for processing, the security of POS.
Conductive carbon granules 5 is connected 7 with POS power supply by resistance 6, and resistance 6, which plays a part of protection circuit, to be prevented in circuit
Electric current is excessive, and resistance 6 is 5 to 10 million.Resistance 6 is applied to where the capacitance of POS power supply 7 and parasitic capacitance 2 now
Circuit.
In the present embodiment, when input output port 8 be arranged to export, and export low level, now parasitic capacitance 2 is put
Electricity；Input output port 8 be configured to the pattern of floating input, enabled and configure high level interruption, now parasitic capacitance 2 starts
Charging.
Until electric capacity institute carried charge is put it is that the carried charge of electric capacity is zero only in electric capacity electric discharge, can so makes, detection is posted
The raw charging interval of electric capacity 2 is accurate, reduces error probability.
In the present embodiment, the side-wall outer side of the vertical solder mask 1 of conductive carbon granules 5 is sky, i.e., the conductive outside of carbon granules 5 is not provided with
Other media, when the solid or liquid medium of other connection solder masks 1 be present in the conductive surrounding of carbon granules 5, the electric capacity of parasitic capacitance 2
Amount changes.So when fixing the material of conductive carbon granules 5 by artificial injection, processor will monitor parasitic capacitance 2
Capacitance change, and then monitor POS not safe enough the situation of POS is caused by artificial reforming, ensure the peace of POS
Quan Xing.
POS is provided with POS physical protection device and protected from hardware aspect, and software aspects are also provided with anti-modification protection
Set, protect POS comprehensively, the security of POS is higher.
POS physical protection device of the present invention forms touching switch 9 with solder mask 1 using conductive carbon granules and replaces existing thing
Reason switch, small volume and cheap can be provided with multiple as far as possible in the confined space, form multiple spot and deploy troops on garrison duty, improve
The security of POS, and its very light weight, are not likely to produce when rocking and touch by mistake, and the security of POS is also more
It is good.
Present invention additionally comprises a kind of POS, including above-mentioned POS physical protection device.
POS of the present invention uses above-mentioned POS physical protection device, small volume and cheap, can be in the confined space
Inside be provided with as far as possible it is multiple, formed multiple spot deploy troops on garrison duty, improve the security of POS, and its very light weight, rocking
In the case of be not likely to produce and touch by mistake, the security of POS is also more preferable.
One embodiment of the invention：
A1, a kind of POS physical protection device, inside the POS, including conductive carbon granules, solder mask, parasitic electricity
Appearance and ground plane；
The solder mask, parasitic capacitance and ground plane are on pcb board；
Two pole plates of the parasitic capacitance connect the solder mask and ground plane respectively；
The conductive carbon granules is extruded by POS shell and contacted with the solder mask, the conductive carbon granules connection POS electricity
Source；
The solder mask be provided with input output port, it is described input output port connection POS processor, the place
Manage the charge status that device detects the parasitic capacitance.
A2, the POS physical protection device as described in A 1, the conductive carbon granules are cylinder, and institute is supported at its both ends respectively
State POS shell and solder mask.
A 3, the POS physical protection device as described in A 1, the diameter of section of the conductive carbon granules arrive 1.5mm for 1.
A4, the POS physical protection device as described in A 1, it is characterised in that the capacitance of the parasitic capacitance is 5pf
To 20pf.
A 5, the POS physical protection device as described in A 1, it is characterised in that the conductive carbon granules passes through resistance and institute
The connection of POS power supply is stated, the resistance is 5 to 10 million.
A 6, the POS physical protection device as described in A 1, it is characterised in that when it is described input output port be arranged to
Export, and export low level, now parasitic capacitance discharge；Input output port be configured to the pattern of floating input, it is enabled and match somebody with somebody
High level interruption is put, now parasitic capacitance starts to charge up.
A 7, the POS physical protection device as described in A 1, it is characterised in that the vertical welding resistance of the conductive carbon granules
The side-wall outer side of layer is sky.
One embodiment of the invention：
B1, a kind of POS, including the POS physical protection device any one of A 1-7.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, every utilization
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (8)
- A kind of 1. POS physical protection device, inside the POS, it is characterised in that including conductive carbon granules, solder mask, Parasitic capacitance and ground plane；The solder mask, parasitic capacitance and ground plane are on pcb board；Two pole plates of the parasitic capacitance connect the solder mask and ground plane respectively；The conductive carbon granules is extruded by POS shell and contacted with the solder mask, the conductive carbon granules connection POS power supply；The solder mask be provided with input output port, it is described input output port connection POS processor, the processor Detect the charge status of the parasitic capacitance.
- 2. POS physical protection device according to claim 1, it is characterised in that the conductive carbon granules is cylinder, its The POS shell and solder mask are supported respectively in both ends.
- 3. POS physical protection device according to claim 1, it is characterised in that the diameter of section of the conductive carbon granules 1.5mm is arrived for 1.
- 4. POS physical protection device according to claim 1, it is characterised in that the capacitance of the parasitic capacitance is 5pf to 20pf.
- 5. POS physical protection device according to claim 1, it is characterised in that the conductive carbon granules by resistance with The POS power supply connection, the resistance are 5 to 10 million.
- 6. POS physical protection device according to claim 1, it is characterised in that when it is described input output port set To export, and low level is exported, now parasitic capacitance discharge；Input output port be configured to floating input pattern, enable simultaneously Configure high level to interrupt, now parasitic capacitance starts to charge up.
- 7. POS physical protection device according to claim 1, it is characterised in that the conductive carbon granules vertically resistance The side-wall outer side of layer is sky.
- 8. a kind of POS, it is characterised in that including the POS physical protection device any one of claim 1-7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/076970 WO2018165947A1 (en) | 2017-03-16 | 2017-03-16 | Pos machine, and physical protection device for pos machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107820626A true CN107820626A (en) | 2018-03-20 |
Family
ID=61606916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780001539.0A Pending CN107820626A (en) | 2017-03-16 | 2017-03-16 | POS and POS physical protection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107820626A (en) |
| WO (1) | WO2018165947A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210295Y (en) * | 2008-06-10 | 2009-03-18 | 福建联迪商用设备有限公司 | Anti-tearing protection apparatus using conductive carbon particles |
| US20140184415A1 (en) * | 2012-12-28 | 2014-07-03 | Johnson Electric S.A | Electronic device with tamper resistant enclosure |
| EP2793537A1 (en) * | 2013-04-15 | 2014-10-22 | Johnson Electric S.A. | Security wrap with tearable substrate |
| CN105825599A (en) * | 2016-04-06 | 2016-08-03 | 上海动联信息技术股份有限公司 | Multiple protections system and method for preventing POS machine from intrusion, and POS machine |
| CN106096463A (en) * | 2016-06-08 | 2016-11-09 | 福建联迪商用设备有限公司 | A kind of tamper-evident detecting system based on capacitance detecting principle and method |
| CN206557923U (en) * | 2017-03-14 | 2017-10-13 | 深圳大趋智能科技有限公司 | POS and POS physical protection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6853093B2 (en) * | 2002-12-20 | 2005-02-08 | Lipman Electronic Engineering Ltd. | Anti-tampering enclosure for electronic circuitry |
| CN102509052B (en) * | 2011-10-28 | 2014-05-07 | 深圳市新国都技术股份有限公司 | Safety protection method and device of electronic device touch screen |
| CN205230215U (en) * | 2015-12-17 | 2016-05-11 | 恒宝股份有限公司 | Prevent invading POS machine |
-
2017
- 2017-03-16 CN CN201780001539.0A patent/CN107820626A/en active Pending
- 2017-03-16 WO PCT/CN2017/076970 patent/WO2018165947A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210295Y (en) * | 2008-06-10 | 2009-03-18 | 福建联迪商用设备有限公司 | Anti-tearing protection apparatus using conductive carbon particles |
| US20140184415A1 (en) * | 2012-12-28 | 2014-07-03 | Johnson Electric S.A | Electronic device with tamper resistant enclosure |
| EP2793537A1 (en) * | 2013-04-15 | 2014-10-22 | Johnson Electric S.A. | Security wrap with tearable substrate |
| CN105825599A (en) * | 2016-04-06 | 2016-08-03 | 上海动联信息技术股份有限公司 | Multiple protections system and method for preventing POS machine from intrusion, and POS machine |
| CN106096463A (en) * | 2016-06-08 | 2016-11-09 | 福建联迪商用设备有限公司 | A kind of tamper-evident detecting system based on capacitance detecting principle and method |
| CN206557923U (en) * | 2017-03-14 | 2017-10-13 | 深圳大趋智能科技有限公司 | POS and POS physical protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018165947A1 (en) | 2018-09-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |