CN107894868A - Pos - Google Patents
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- Publication number
- CN107894868A CN107894868A CN201711113964.7A CN201711113964A CN107894868A CN 107894868 A CN107894868 A CN 107894868A CN 201711113964 A CN201711113964 A CN 201711113964A CN 107894868 A CN107894868 A CN 107894868A
- Authority
- CN
- China
- Prior art keywords
- port
- power supply
- state
- setting
- pos
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04847—Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
-
- 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
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/12—Cash registers electronically operated
Abstract
The present invention provides a kind of POS, including：Processing unit, human-machine interface unit, voltage selecting unit and serial port connector；The program run on the processing unit display interface can be provided by the human-machine interface unit and selection inputs, the voltage selecting unit includes switch selection circuit, the switch selection circuit is controlled by the control signal that the processing unit provides according to selection input, and setting state is in, and then cause the setting port on the serial port connector to be in common communications state or outside power supply state.The process of serial ports output voltage adjustment can be simplified, improve production efficiency, improve Consumer's Experience.
Description
Technical field
The present invention relates to POS, and the serial ports part being connected with external serial equipment is used for more particularly in POS.
Background technology
Referring to Fig. 1, existing POS 10a generally includes processing unit 1, human-machine interface unit 2, voltage selecting unit 3a
With serial port connector 4.Wherein, display content on the key-press input and display screen of human-machine interface unit 2, can pass through processing unit
Connection 12 between 1 and human-machine interface unit 2 is transmitted.Processing unit 1 can by the connection 14 between serial port connector 4,
Communicate and connect with external serial equipment 20 via connection 1420.Voltage selecting unit 3a can by with serial port connector 4 it
Between connection 34, provide selective voltage for outside serial equipments 20 via connection 3420 and supply output.
With reference to referring to Fig. 2, serial equipment 20 external existing POS 10a, POS 10a is much needed to provide electricity
Source, such as：Client display screen, some model needs+5V voltages supplies, some model needs+12V voltages supplies.Existing solution
Certainly method, namely voltage selecting unit 3a specific implementation is typically：Jumper connection seat 36a is set on POS 10a mainboard, then
By jumper connection cap 37a and jumper connection seat 36a cooperation, to select output voltage.This voltage selection scheme, in the production phase,
The technological operation that jumper connection cap 37a is plugged to setting position on jumper connection seat 36a is needed, causes production efficiency relatively low；Also, one
Denier is assembled into after complete machine consigns to user, if user wants to adjust output voltage, is just had to take complete machine apart, is carried out on mainboard
Operation, cooperation positions of the jumper connection cap 37a with respect to jumper connection seat 36a is adjusted, desired output voltage can be just adjusted to, waste time and energy,
Consumer's Experience is poor.It can be seen that it is necessary to be improved in fact.
The content of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned the shortcomings of the prior art, and proposes a kind of POS,
The process of serial ports output voltage adjustment can be simplified, improve production efficiency, improve Consumer's Experience.
The technical scheme that the present invention proposes for above-mentioned technical problem includes, and proposes a kind of POS, including：Processing is single
Member, human-machine interface unit, voltage selecting unit and serial port connector；The program run on the processing unit can be man-machine by this
Interface unit provides display interface and selection inputs, and the voltage selecting unit includes switch selection circuit, the switch selection circuit
Display interface can be provided according to the program run on the processing unit by the human-machine interface unit by being controlled by the processing unit
Inputted with selection, the voltage selecting unit includes switch selection circuit, the switch selection circuit be controlled by the processing unit according to
The control signal that selection input provides, and setting state is in, and then the setting port on the serial port connector is in
Common communications state or outside power supply state.
Compared with prior art, the present invention is dexterously provided by the connection between processing unit and human-machine interface unit
The prompting of voltage selection and operation interface, and inputted according to the selection that receives, by processing unit and voltage selecting unit it
Between connection, by the switch selection circuit inside voltage selecting unit, complete corresponding hand-off process, it is defeated serial ports can be simplified
Go out the process of voltage adjustment, improve production efficiency, improve Consumer's Experience.
Brief description of the drawings
Fig. 1 is the theory diagram that existing POS is connected with external serial equipment.
Fig. 2 is the electrical schematic diagram of voltage selecting unit in existing POS.
Fig. 3 is the theory diagram that the POS of the present invention is connected with external serial equipment.
Fig. 4 is display interface related to voltage selection operation in POS of the invention.
Fig. 5 is the electrical schematic diagram of voltage selecting unit in POS of the invention.
Wherein, Main Reference Numerals are described as follows：The human-machine interface unit of 20 serial equipment of 10a, 10POS machine, 1 processing unit 2
3a, the serial port connector 12,13,14,34,1420,3420 of 3 voltage selecting unit 4 connection 36a jumper connection seat 37a jumper connection caps.
Embodiment
Below in conjunction with accompanying drawing, give the present invention further elaboration.
Referring to Fig. 3, Fig. 3 is the theory diagram that the POS of the present invention is connected with external serial equipment.The present invention proposes
A kind of POS 10, including：Processing unit 1, human-machine interface unit 2, voltage selecting unit 3 and serial port connector 4.Wherein, handle
Connection 12 between unit 1 and human-machine interface unit 2 be present.Connection 13 between processing unit 1 and voltage selecting unit 3 be present.Place
Manage and connection 14 between unit 1 and serial port connector 4 be present.Connection 34 between voltage selecting unit 3 and serial port connector 4 be present.
Connection 1420,3420 between serial port connector 4 and the external serial equipment 20 of POS 10 be present.POS 10 is by connection 1420
Serial communication can be carried out with serial equipment 20.POS 10 can be that serial equipment 20 provides power supply supply by connection 3420.
Processing unit 1 includes the processor of such as microprocessor.The processor has some input/output ports, comes
It is connected with other circuits.The processor has the built-in functions such as computing, storage, and it is corresponding to reach to run corresponding program
Function.The processor has serial communication interface, can be connected with other circuit realiration serial communications.
Human-machine interface unit 2 includes being used for the output section for providing aural/visual instruction and the input unit for receiving order.
For example, output section can be liquid crystal display, and input unit can be push-button array.Also, the liquid crystal display can with the push-button array
To be combined together, such as：Touch-screen.
Voltage selecting unit 3 includes switch selection circuit, can complete to switch hand-off process accordingly.For example, should
Switch selection circuit can include some switch elements by setting connection, such as：Triode, metal-oxide-semiconductor or relay.
These switch elements are controlled by processing unit 1, and are correspondingly in and set shape determined by the program run on processing unit 1
State.
Serial port connector 4 can be the DB9 connectors with nine ports of standard compliant RS232 communication needs, use
In providing the connectivity port between POS 10 and serial equipment 20, so that POS 10 and serial equipment 20 can be by corresponding
Serial communication wire and cable connector, combine.9th port definition of serial port connector 4 is ring port.In the present invention
In, the 9th Port-Controlled may be at common communications state, the transmission of the bell signal for realizing transmission.9th Port-Controlled
Outside power supply state can also be in.It is understood that connection 34 and connection 3420 are directed to the 9th end of serial port connector 4
Mouthful.
The present invention includes the Software for Design two of institute's operation program in the hardware design and processing unit 1 of voltage selecting unit 3
The improvement of aspect.Referring to Fig. 4, Fig. 4 is display interface related to voltage selection operation in POS of the invention.Display interface
Menu including selecting one in one three, three options of menu are respectively：Signal of communication (Signal) ,+5V and+12V.Pass through this
Both sides is improved, and need to only be provided such as through human-machine interface unit 2 simply by running the corresponding software on processing unit 1
Display interface shown in Fig. 4, user is according to the prompting for showing the page, through the input unit of human-machine interface unit 2, in signal ,+5V
And corresponding selection is made between+12V, processing unit 1 can be controlled automatically by connecting 13 pairs of voltage selecting units 3
System, then the signal for determining to transmit in connection 3420 via connection 34, actually general communication signal, still+5V voltages supply letter
Number, or ,+12V voltages supply signal.In other words, the setting port on the serial port connector 4 (i.e. the 9th port) can be by
Control, and automatically in common communications state, first voltage power supply state (i.e.+5V) or second voltage power supply state (i.e.+
12V)；First voltage power supply state and second voltage power supply state are referred to as being not at common communications state.
Referring to Fig. 5, Fig. 5 is the electrical schematic diagram of voltage selecting unit in POS of the invention.Voltage selecting unit 3 is main
The electronic switching circuit being made up of device Q61, Q62, Q63, Q64, Q65 and Q66 11 metal-oxide-semiconductors provided and its peripheral circuit
Form.Electronic switching circuit is controlled by first, second two output ports of processing unit 1, and the first output port is used to determine
Setting port be in/is not at common communications state, and the second output port is used to determine that setting port is in first voltage power supply
State/second voltage power supply state.First output port realizes the setting port on serial port connector by MOS control circuits
In common communications state or outside power supply state；Second output port realizes serial port connector by MOS control circuits
On setting port be in first voltage power supply state/second voltage power supply state.Specifically, the first output port passes through two-stage
NMOS control circuits realize that the setting port on serial port connector is in common communications state or outside power supply state.Electronics
The functional relationship that on-off circuit is realized, it is as shown in the table.
| RI_PWR#_COM2 | RI#_PWR_COM2 | 5V_12V#_COM2 | 5V#_12V_COM2 | EN12V#_COM2 | EN5V_COM2 | VCC_RI#2 | |
| Signal | 1 | 0 | - | - | 0 | 0 | COM_RI#2 |
| +5V | 0 | 1 | 1 | 0 | 0 | 1 | VCC5COM_HD06 |
| +12V | 0 | 1 | 0 | 1 | 1 | 0 | VCC12COM_HD06 |
Wherein：Signal RI_PWR#_COM2 corresponds to first output port；Signal 5V_12V#_COM2 correspond to this
Two output ports, the setting port that signal VCC_RI#2 corresponds on serial port connector；Signal RI#_PWR_COM2,5V#_12V_
COM2, EN12V#_COM2 and EN5V_COM2 are M signal.
This electrical schematic diagram is elaborated in more detail below.
First, device Q61 interlock circuits.Device Q61 has first, second two metal-oxide-semiconductors.Wherein, signal RI_PWR#_
Signals of the COM2 after a diode-isolated in diode chip for backlight unit D22, with signal 5V_12V#_COM2 through diode chip for backlight unit
The signal phase after another diode-isolated in D22 is with afterwards, being sent to the grid G 1 of the first metal-oxide-semiconductor.The source electrode of first metal-oxide-semiconductor
S1 is grounded.The drain D 1 of first metal-oxide-semiconductor meets signal VCC12COM_HD06, and is sent to the grid G 2 of the second metal-oxide-semiconductor.Second metal-oxide-semiconductor
Source S 2 be grounded.The drain D 2 of second metal-oxide-semiconductor meets signal VCC12COM_HD06, and meets signal EN12V#_COM2.
2nd, device Q62 interlock circuits.Device Q62 has the three, the 4th two metal-oxide-semiconductors.Wherein, signal 5V_12V#_
COM2 is sent to the grid G 1 of the 3rd metal-oxide-semiconductor.The source S 1 of 3rd metal-oxide-semiconductor is grounded.The drain D 1 of 3rd metal-oxide-semiconductor meets signal RI#_
PWR_COM2, and meet signal VCC3_HD06.Signal RI_PWR#_COM2 is sent to the grid G 2 of the 4th metal-oxide-semiconductor.4th metal-oxide-semiconductor
Source S 2 is grounded.The drain D 2 of 4th metal-oxide-semiconductor meets signal RI#_PWR_COM2, and meets signal VCC3_HD06.Wherein, signal
VCC3_HD06 is a power supply signal, for providing+3.3V power supplys to metal-oxide-semiconductor.
3rd, device Q63 interlock circuits.Device Q63 has the five, the 6th two metal-oxide-semiconductors.Wherein, signal EN5V#_COM2
It is sent to the grid G 1 of the 5th metal-oxide-semiconductor.The source S 1 of 5th metal-oxide-semiconductor meets signal VCC_RI#2.The drain D 1 of 5th metal-oxide-semiconductor connects signal
VCC5M_COM2.Signal EN12V#_COM2 is sent to the grid G 2 of the 6th metal-oxide-semiconductor.The source S 2 of 6th metal-oxide-semiconductor connects signal
VCC12COM_HD06.The drain D 2 of 6th metal-oxide-semiconductor meets signal VCC_RI#2.Wherein, signal VCC5M_COM2 is M signal.
Signal VCC5M_COM2 plays a part of connecting serial ports 5V power supplys, when signal EN5V#_COM2 is effective, makes signal VCC_RI#2
Connection is turned on signal VCC5M_COM2, signal VCC5COM_HD06 turns on connection with signal VCC5M_COM2 so that signal
VCC_RI#2 and signal VCC5COM_HD06 mutual conductions.
4th, device Q64 interlock circuits.Device Q64 has the seven, the 8th two metal-oxide-semiconductors.Wherein, signal RI_PWR#_
COM2 is sent to the grid G 1 of the 7th metal-oxide-semiconductor.The source S 1 of 7th metal-oxide-semiconductor is grounded.The drain D 1 of 7th metal-oxide-semiconductor meets signal EN5V_
COM2, and meet signal VCC12COM_HD06.Signal 5V#_12V_COM2 is sent to the grid G 2 of the 8th metal-oxide-semiconductor.8th metal-oxide-semiconductor
Source S 2 is grounded.The drain D 2 of 8th metal-oxide-semiconductor meets signal EN5V_COM2.
5th, device Q65 interlock circuits.Device Q65 has the 9th metal-oxide-semiconductor.Signal EN5V_COM2 is sent to the 9th metal-oxide-semiconductor
Grid G.The source S of 9th metal-oxide-semiconductor meets signal VCC5COM_HD06.The drain D 1 of 9th metal-oxide-semiconductor meets signal VCC5M_COM2.
6th, device Q66 interlock circuits.Device Q66 has the ten, the 10th one or two of metal-oxide-semiconductors.Wherein, signal RI#_PWR_
COM2 is sent to the grid G 1 of the tenth metal-oxide-semiconductor.The source S 1 of tenth metal-oxide-semiconductor is grounded.The drain D 1 of tenth metal-oxide-semiconductor connects signal
VCC12COM_HD06, and it is sent to the grid G 2 of the 11st metal-oxide-semiconductor.The source S 2 of 11st metal-oxide-semiconductor meets signal COM_RI#2.The
The drain D 2 of 11 metal-oxide-semiconductors meets signal VCC_RI#2.
As long as it is understood that the present invention two signals RI_PWR#_COM2 and 5V_12V#_COM2 are controlled,
3420 switching between signal ,+5V and+12V of connection can be automatically performed.In other words, as long as by the two signals RI_
PWR#_COM2 and 5V_12V#_COM2 is connected with two output ports that processing unit 1 provides, you can through the institute of processing unit 1
The program of operation, the two signals RI_PWR#_COM2 and 5V_12V#_COM2 setting are automatically performed, to reach connection 3420
Switching between signal ,+5V and+12V.
The POS 10 of the present invention dexterously provides electricity by the connection 12 between processing unit 1 and human-machine interface unit 2
Press prompting and the operation interface of selection, and inputted according to the selection received, by processing unit 1 and voltage selecting unit 3 it
Between connection 13, by the switch selection circuit inside voltage selecting unit 3, complete corresponding hand-off process, string can be simplified
The process of mouth output voltage adjustment, improves production efficiency, improves Consumer's Experience.
The above, only presently preferred embodiments of the present invention, are not intended to limit embodiment of the present invention, and this area is general
Lead to central scope and spirit of the technical staff according to the present invention, can very easily carry out corresponding flexible or modification, therefore originally
The protection domain of invention should be defined by the protection domain required by claims.
Claims (8)
1. a kind of POS, including：Processing unit, human-machine interface unit, voltage selecting unit and serial port connector；Its feature exists
In the program run on the processing unit display interface can be provided by the human-machine interface unit and selection inputs, the voltage
Selecting unit includes switch selection circuit, and the switch selection circuit is controlled by the control that the processing unit provides according to selection input
Signal processed, and be in setting state, so cause the setting port on the serial port connector be in common communications state or to
Outer power supply state.
2. according to the POS described in claim 1, it is characterised in that the serial port connector has nine ports, the setting port
Corresponding to the 9th port, i.e. serial ports ring port.
3. according to the POS described in claim 1, it is characterised in that described outside power supply state is powered including first voltage
State and second voltage power supply state.
4. according to the POS described in claim 3, it is characterised in that on first voltage power supply state, the serial port connector
Setting port is provided out+5V；Setting port on second voltage power supply state, the serial port connector is provided out+12V.
5. according to the POS described in claim 4, it is characterised in that the display interface that the human-machine interface unit provides includes one
One menu is selected in individual three, three options of the menu are respectively：Signal of communication ,+5V and+12V.
6. according to the POS described in claim 3, it is characterised in that the electronic switching circuit is controlled by the of the processing unit
First, the second two output ports, first output port are used to determine that the setting port be in/is not at common communications state,
Second output port is used to determine that the setting port is in first voltage power supply state/second voltage power supply state.
7. according to the POS described in claim 6, it is characterised in that first output port is realized by MOS control circuits
Setting port on the serial port connector is in common communications state or outside power supply state；Second output port passes through
MOS control circuits realize that the setting port on the serial port connector is in first voltage power supply state/second voltage power supply shape
State.
8. according to the POS described in claim 7, it is characterised in that first output port passes through two-stage NMOS control circuits
To realize that the setting port on the serial port connector is in common communications state or outside power supply state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113964.7A CN107894868A (en) | 2017-11-13 | 2017-11-13 | Pos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113964.7A CN107894868A (en) | 2017-11-13 | 2017-11-13 | Pos |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107894868A true CN107894868A (en) | 2018-04-10 |
Family
ID=61805219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711113964.7A Pending CN107894868A (en) | 2017-11-13 | 2017-11-13 | Pos |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107894868A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130402Y (en) * | 2007-06-29 | 2008-10-08 | 上海寺冈电子有限公司 | COM electrification selectable interface apparatus of POS machine host |
| CN104158235A (en) * | 2013-05-15 | 2014-11-19 | 华为终端有限公司 | Battery charging control method, device and system |
| CN104467162A (en) * | 2014-10-31 | 2015-03-25 | 美登思电气（上海）有限公司 | Anti-misoperation medium voltage emergency power supply switching system |
| CN204406556U (en) * | 2015-01-22 | 2015-06-17 | 袁爱民 | A kind of POS base of adaptive OTG mobile device |
| CN104937516A (en) * | 2013-01-28 | 2015-09-23 | 惠普发展公司，有限责任合伙企业 | Detecting device installation and removal on a port |
| CN104992595A (en) * | 2015-07-03 | 2015-10-21 | 中国电子科技集团公司第四十一研究所 | Teaching experiment circuit capable of reducing cable assembly connection |
-
2017
- 2017-11-13 CN CN201711113964.7A patent/CN107894868A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130402Y (en) * | 2007-06-29 | 2008-10-08 | 上海寺冈电子有限公司 | COM electrification selectable interface apparatus of POS machine host |
| CN104937516A (en) * | 2013-01-28 | 2015-09-23 | 惠普发展公司，有限责任合伙企业 | Detecting device installation and removal on a port |
| CN104158235A (en) * | 2013-05-15 | 2014-11-19 | 华为终端有限公司 | Battery charging control method, device and system |
| CN104467162A (en) * | 2014-10-31 | 2015-03-25 | 美登思电气（上海）有限公司 | Anti-misoperation medium voltage emergency power supply switching system |
| CN204406556U (en) * | 2015-01-22 | 2015-06-17 | 袁爱民 | A kind of POS base of adaptive OTG mobile device |
| CN104992595A (en) * | 2015-07-03 | 2015-10-21 | 中国电子科技集团公司第四十一研究所 | Teaching experiment circuit capable of reducing cable assembly connection |
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| PB01 | Publication | ||
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Application publication date: 20180410 |