CN107014534A - A kind of POS safety contact pressure test device and method of testing - Google Patents
A kind of POS safety contact pressure test device and method of testing Download PDFInfo
- Publication number
- CN107014534A CN107014534A CN201710260889.0A CN201710260889A CN107014534A CN 107014534 A CN107014534 A CN 107014534A CN 201710260889 A CN201710260889 A CN 201710260889A CN 107014534 A CN107014534 A CN 107014534A
- Authority
- CN
- China
- Prior art keywords
- safety contact
- cantilever beam
- circuit board
- pos
- test device
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000010998 test method Methods 0.000 title abstract description 7
- 239000011888 foil Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 11
- 229910002027 silica gel Inorganic materials 0.000 abstract description 11
- 239000000741 silica gel Substances 0.000 abstract description 11
- 229960001866 silicon dioxide Drugs 0.000 abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to testing field, more particularly to a kind of POS safety contact pressure test device and method of testing.Cut by carrying out special shape to circuit board, form cantilever beam, safety contact is arranged on the free end of cantilever beam, it is possible to prevente effectively from because of influence of the circuit board other parts deformation to foil gauge measured place measured value when POS lock is paid, when cantilever beam and circuit board junction are deformed upon, the foil gauge being arranged in fixing end can get strain value, and the pressure value for obtaining POS safety contact is calculated by processor, whole test process is unrelated with the decrement of silicagel pad, so as to the pressure value of the accurate measurement safety contact when POS is locked and paid.
Description
Technical field
The present invention relates to testing field, more particularly to a kind of POS safety contact pressure test device and method of testing.
Background technology
It is general on pcb board in POS to be all provided with one or more safety contact, carried out by silicagel pad pre-
The certain pressure value of pressure, loosens when safety contact (usually tear machine open or machine collide be to occur), pressure now
Value be referred to as triggering critical pressure value, at this moment will trigger POS carry out safe mode, can by way of removing internal information,
Prevent internal information from revealing.
But the safety contact triggering critical pressure value of POS is with the design of silicagel pad relevant at present, wherein silicagel pad
Decrement is the principal element for determining triggering critical pressure value size, but in actual production, because the manufacture of silicagel pad is present
After tolerance, therefore POS complete machines lock pair, the nominal value of the safety contact when triggering critical pressure value of safety contact will be with design
It is different.
But be that direct measurement is carried out by pressure sensor to POS safety contact method for testing pressure at present, still
Because pressure sensor has certain thickness in itself, the precompressed amount of silicagel pad can be largely effected on, so that POS can not be measured accurately
The triggering critical pressure value of safety contact after complete machine lock is paid.
The content of the invention
The technical problems to be solved by the invention are：Offer is a kind of can accurately to test the pressure value of POS safety contact
Test device and method of testing.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of POS safety contact pressure test device, including circuit board, the circuit board are provided with safety contact, institute
Circuit board is stated provided with cantilever beam, the cantilever beam includes free end and the fixing end being connected with circuit board, the safety contact
It is arranged on free end, the fixing end, which is provided with, to be used to obtain answering produced by cantilever beam is deformed upon with circuit board junction
The foil gauge of variate, the foil gauge is connected with processor, and the processor, which is used to be calculated according to the strain value got, to be obtained
The pressure value of POS safety contact.
Another technical scheme that the present invention is used for：
A kind of POS safety contact method for testing pressure, including：
Obtain cantilever beam and circuit board junction and deform upon produced strain value, the cantilever beam include free end and
The fixing end being connected with circuit board, the safety contact is arranged on free end；
According to the strain value got, the pressure value for obtaining POS safety contact is calculated.
The beneficial effects of the present invention are：A kind of POS safety contact pressure test device and method that the present invention is provided,
It is to be cut by carrying out special shape to circuit board, forms cantilever beam, safety contact is arranged on the free end of cantilever beam,
It is possible to prevente effectively from because of influence of the circuit board other parts deformation to foil gauge measured place measured value when POS lock is paid, working as cantilever
When beam is deformed upon with circuit board junction, the foil gauge being arranged in fixing end can get strain value, and pass through processor
The pressure value for obtaining POS safety contact is calculated, whole test process is unrelated with the decrement of silicagel pad, so as in POS
The pressure value of machine lock accurate measurement safety contact when paying.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of POS safety contact pressure test device of the present invention；
Fig. 2 is a kind of cantilever beam stress diagram of POS safety contact pressure test device of the present invention；
Fig. 3 is a kind of step flow chart of POS safety contact method for testing pressure of the present invention；
Label declaration：
1st, circuit board；11st, cantilever beam；111st, free end；112nd, fixing end；12nd, through hole.
Embodiment
To describe technology contents, the objects and the effects of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Safety contact is arranged on the free end of cantilever beam, when cantilever beam and electricity
When road plate junction is deformed upon, strain value is obtained, the pressure value for obtaining POS safety contact is calculated according to strain value.
It refer to Fig. 1 and Fig. 2, a kind of POS safety contact pressure test device that the present invention is provided, including circuit board
1, the circuit board 1 is provided with safety contact, and the circuit board 1 is provided with cantilever beam 11, and the cantilever beam includes free end 111
With the fixing end 112 being connected with circuit board, the safety contact is arranged on free end 111, and the fixing end 112 is provided with use
In the foil gauge for obtaining the strain value produced by cantilever beam is deformed upon with circuit board junction, the foil gauge connects with processor
Connect, the processor is used to calculate the pressure value for obtaining POS safety contact according to the strain value got.
It was found from foregoing description, the beneficial effects of the present invention are：
A kind of POS safety contact pressure test device that the present invention is provided, is by carrying out special shape to circuit board
Shape cut, formed cantilever beam, safety contact is arranged on the free end of cantilever beam, it is possible to prevente effectively from because POS lock pay when
Circuit board other parts deform the influence to foil gauge measured place measured value, when cantilever beam is deformed upon with circuit board junction
When, the foil gauge being arranged in fixing end can get strain value, and the pressure for obtaining POS safety contact is calculated by processor
Force value, whole test process is unrelated with the decrement of silicagel pad, so as to the accurate measurement safety contact when POS is locked and paid
Pressure value.
Further, the circuit board is provided with through hole 12.
Seen from the above description, the energy for setting through hole to be used for weakening circuit board other parts deformation on circuit boards is passed
Pass, and then protect cantilever beam unaffected, improve the accuracy of measurement.
Further, the through hole is located at the oppositely extending place of cantilever beam.
Seen from the above description, in another embodiment, through hole is arranged on to the oppositely extending place of cantilever beam, Neng Gouti
The isolation effect to cantilever beam is risen, the energy transmission of circuit board other parts deformation is obstructed as far as possible.
Further, the through hole is strip through-hole, and the bearing of trend of the strip through-hole and cantilever beam is perpendicular.
Seen from the above description, in implementation process, when the bearing of trend of strip through-hole and cantilever beam is perpendicular, circuit
The energy of plate other parts deformation transmission can be transmitted along the vertical axial of strip through-hole, and as the bearing of trend with cantilever beam mutually hangs down
Straight direction transmission, so as at utmost obstruct the energy transmission of circuit board other parts deformation.
Further, the cantilever beam is rectangle, and the strip through-hole cross-sectional length is equal with the width of cantilever beam.
Seen from the above description, can be at utmost when strip through-hole cross-sectional length is equal with the width of cantilever beam
The circuit board space occupied by through hole is reduced while obstructing the energy transmission of circuit board other parts deformation.
Further, fixed intervals are provided between through hole and the cantilever beam fixing end.
Seen from the above description, fixed intervals are provided between through hole and cantilever beam fixing end, consolidating for cantilever beam is not influenceed
Determine intensity.
Further, the foil gauge is located at safety contact and the centre position of fixing end end.
Seen from the above description, foil gauge is arranged on to the centre position of safety contact and fixing end end, can be lifted
The sensitivity of foil gauge, and then can accurately obtain the strain value produced by cantilever beam is deformed upon with circuit board junction, root
The pressure value for obtaining POS safety contact is calculated according to the strain value, pressure value now is the most accurate.
Further, the foil gauge and processor wired connection.
Seen from the above description, above-mentioned foil gauge is connected using wire, and the strain value collected is arrived by wire transmission
Processor (processor is the strain testing instrument of peripheral hardware), can lift efficiency of transmission and security and stability, because strain is to belong to
The inside Light deformation of circuit board, the wire of foil gauge has little influence on to it.
A kind of POS safety contact method for testing pressure also provided refering to Fig. 3, the present invention, including：
Obtain cantilever beam and circuit board junction and deform upon produced strain value, the cantilever beam include free end and
The fixing end being connected with circuit board, the safety contact is arranged on free end；
According to the strain value got, the pressure value for obtaining POS safety contact is calculated.
It was found from foregoing description, the beneficial effects of the present invention are：A kind of POS safety contact pressure that the present invention is provided
Method of testing, is to be cut by carrying out special shape to circuit board, forms cantilever beam, safety contact is arranged on into cantilever beam
On free end, it is possible to prevente effectively from because of shadow of the circuit board other parts deformation to foil gauge measured place measured value when POS lock is paid
Ring, when cantilever beam is deformed upon with circuit board junction, the foil gauge being arranged in fixing end can get strain value, and lead to
Cross processor and calculate the pressure value for obtaining POS safety contact, whole test process is unrelated with the decrement of silicagel pad, so as to
The pressure value of enough measurement safety contacts accurate when POS is locked and paid.
Fig. 1-2 is refer to, embodiments of the invention one are：
A kind of POS safety contact pressure test device that the present invention is provided, including circuit board, the circuit board are provided with
Safety contact, the circuit board is provided with cantilever beam, and the cantilever beam includes free end and the fixing end being connected with circuit board, institute
State safety contact to be arranged on free end, the fixing end is provided with to be deformed upon for obtaining cantilever beam with circuit board junction
The foil gauge of produced strain value, the foil gauge is connected with processor, and the processor is used for according to the strain got
Value calculates the pressure value for obtaining POS safety contact.
The cantilever beam is the cantilever beam cut out from primary circuit plate, and the peripheral groove of cantilever beam is logical, safety
Contact is arranged on the free end position of overarm arm, is greatly reduced influence of the circuit board miscellaneous part to cantilever beam, then can be carried
The accuracy of high measurement.
The circuit board is provided with through hole.The through hole is used for weakening the energy transmission of circuit board other parts deformation, and then
Protect cantilever beam unaffected, improve the accuracy of measurement.
The through hole is located at the oppositely extending place of cantilever beam, can lift the isolation effect to cantilever beam, obstruct as far as possible
The energy transmission of circuit board other parts deformation.
Further, above-mentioned through hole is strip through-hole, and the bearing of trend of the strip through-hole and cantilever beam is perpendicular.When
When the bearing of trend of strip through-hole and cantilever beam is perpendicular, the energy of circuit board other parts deformation transmission can be along strip through-hole
Vertical axial is transmitted, and is to be transmitted with the perpendicular direction of the bearing of trend of cantilever beam, so as at utmost obstruct circuit
The energy transmission of plate other parts deformation.
The cantilever beam is rectangle, and the strip through-hole cross-sectional length is equal with the width of cantilever beam.Work as strip through-hole
, can be in the at utmost energy transmission of barrier circuit board other parts deformation when cross-sectional length is equal with the width of cantilever beam
The circuit board space occupied by through hole is reduced simultaneously.
Fixed intervals are provided between through hole and the cantilever beam fixing end.Provided with solid between through hole and cantilever beam fixing end
Fixed interval, the fixing intensity of cantilever beam is not influenceed.
Such as Fig. 2, processor calculates the pressure value for obtaining POS safety contact according to the strain value got, specific to calculate
Formula is as follows：
Wherein F is pressure value, and L is applies the position of force value, and x is the position of strain measurement, and W is bending resistant section coefficient, and E is
Modulus of elasticity, εxFor the strain value at x.Material (meets recklessly in elastic deformation stage, its stress and strain direct proportionality
Gram law), its proportionality coefficient is referred to as modulus of elasticity.
When safety contact applies certain pressure, cantilever beam produces micro-strain, and cantilever beam can be measured by foil gauge
Bending strain, then according to above-mentioned force equation, calculate pressure applied value, you can obtain the precompressed force value of silicagel pad.
Fig. 1-2 is refer to, embodiments of the invention two are：
It is further to foil gauge to limit on the basis of above-described embodiment one, be specially：The foil gauge is located at safety and touched
Point and the centre position of fixing end end.Foil gauge is arranged on to the centre position of safety contact and fixing end end, Neng Gouti
The sensitivity of foil gauge is risen, and then can accurately obtain cantilever beam and deforms upon produced strain value with circuit board junction,
The pressure value for obtaining POS safety contact is calculated according to the strain value, pressure value now is the most accurate.The foil gauge
With processor wired connection.Above-mentioned foil gauge is connected using wire, and the strain value collected passes through wire transmission to processor
(processor is the strain testing instrument of peripheral hardware), can lift efficiency of transmission and security and stability, because strain is to belong to circuit board
Inside Light deformation, the wire of foil gauge has little influence on to it.
In summary, the present invention is provided a kind of POS safety contact pressure test device and method of testing, are by right
Circuit board carries out special shape cutting, forms cantilever beam, safety contact is arranged on the free end of cantilever beam, can be effective
Avoid because of influence of the circuit board other parts deformation to foil gauge measured place measured value when POS lock is paid, when cantilever beam and circuit
When plate junction is deformed upon, the foil gauge being arranged in fixing end can get strain value, and be obtained by processor calculating
The pressure value of POS safety contact, whole test process is unrelated with the decrement of silicagel pad, so as to when POS lock is paid
The pressure value of accurate measurement safety contact.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (9)
1. a kind of POS safety contact pressure test device, including circuit board, the circuit board are provided with safety contact, it is special
Levy and be, the circuit board is provided with cantilever beam, and the cantilever beam includes free end and the fixing end being connected with circuit board, described
Safety contact is arranged on free end, and the fixing end, which is provided with, to be used to obtain cantilever beam and circuit board junction deforms upon institute
The foil gauge of the strain value of generation, the foil gauge is connected with processor, and the processor is used for according to the strain value got
Calculate the pressure value for obtaining POS safety contact.
2. POS safety contact pressure test device according to claim 1, it is characterised in that set on the circuit board
There is through hole.
3. POS safety contact pressure test device according to claim 2, it is characterised in that the through hole is located at outstanding
The oppositely extending place of arm beam.
4. POS safety contact pressure test device according to claim 2, it is characterised in that the through hole is bar shaped
Through hole, the bearing of trend of the strip through-hole and cantilever beam is perpendicular.
5. POS safety contact pressure test device according to claim 4, it is characterised in that the cantilever beam is length
Square, the strip through-hole cross-sectional length is equal with the width of cantilever beam.
6. POS safety contact pressure test device according to claim 2, it is characterised in that the through hole and cantilever
Fixed intervals are provided between beam fixing end.
7. POS safety contact pressure test device according to claim 1, it is characterised in that the foil gauge is located at
Safety contact and the centre position of fixing end end.
8. POS safety contact pressure test device according to claim 1, it is characterised in that the foil gauge and place
Manage device wired connection.
9. a kind of POS safety contact method for testing pressure, it is characterised in that including：
Obtain cantilever beam and circuit board junction and deform upon produced strain value, the cantilever beam include free end and with electricity
The fixing end of road plate connection, the safety contact is arranged on free end；
According to the strain value got, the pressure value for obtaining POS safety contact is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260889.0A CN107014534B (en) | 2017-04-20 | 2017-04-20 | POS machine safety contact pressure testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260889.0A CN107014534B (en) | 2017-04-20 | 2017-04-20 | POS machine safety contact pressure testing device and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014534A true CN107014534A (en) | 2017-08-04 |
| CN107014534B CN107014534B (en) | 2019-12-17 |
Family
ID=59448594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260889.0A Expired - Fee Related CN107014534B (en) | 2017-04-20 | 2017-04-20 | POS machine safety contact pressure testing device and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014534B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001265520A (en) * | 2000-03-17 | 2001-09-28 | Fuji Electric Co Ltd | Input device of terminal |
| US20010050307A1 (en) * | 2000-06-07 | 2001-12-13 | Matsushita Electric Industrial Co., Ltd. | Cashdrawer apparatus |
| CN102548320B (en) * | 2011-12-30 | 2014-08-20 | 福建联迪商用设备有限公司 | Electronic device |
| CN104285339A (en) * | 2013-10-30 | 2015-01-14 | 华为技术有限公司 | Signal connection device |
| CN105628268A (en) * | 2015-12-22 | 2016-06-01 | 福建联迪商用设备有限公司 | System and method of testing POS equipment safety contact pressure |
-
2017
- 2017-04-20 CN CN201710260889.0A patent/CN107014534B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001265520A (en) * | 2000-03-17 | 2001-09-28 | Fuji Electric Co Ltd | Input device of terminal |
| US20010050307A1 (en) * | 2000-06-07 | 2001-12-13 | Matsushita Electric Industrial Co., Ltd. | Cashdrawer apparatus |
| CN102548320B (en) * | 2011-12-30 | 2014-08-20 | 福建联迪商用设备有限公司 | Electronic device |
| CN104285339A (en) * | 2013-10-30 | 2015-01-14 | 华为技术有限公司 | Signal connection device |
| CN105628268A (en) * | 2015-12-22 | 2016-06-01 | 福建联迪商用设备有限公司 | System and method of testing POS equipment safety contact pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107014534B (en) | 2019-12-17 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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