CN105446236B - Oil price board control card and oil price board system - Google Patents
Oil price board control card and oil price board system Download PDFInfo
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- CN105446236B CN105446236B CN201610004166.XA CN201610004166A CN105446236B CN 105446236 B CN105446236 B CN 105446236B CN 201610004166 A CN201610004166 A CN 201610004166A CN 105446236 B CN105446236 B CN 105446236B
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- oil price
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23132—Multifunction display
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of oil price board control card and corresponding oil price board systems.The oil price board control card includes the communication interface and multi-channel control mouth of embedded microprocessor and the electrical connection embedded microprocessor, and the multi-channel control mouth is for connecting oil price board lamp plate；In addition, further including：Expansion card connector and input and output direction controlable electric current；Input and output direction controlable electric current is connected electrically between the embedded microprocessor and the expansion card connector and receives the control of the embedded microprocessor so that input and output direction is arranged.Therefore, the present invention can will band point checking functions control card and roll into one without the control card of checking functions, realize the free switching between them, allow in the use of oil price board control card and more flexibly and to install and more facilitate.
Description
Technical field
The present invention relates to oil price board technical field of system control more particularly to a kind of oil price board control cards and a kind of oil price
Board system.
Background technology
For this special field of oil price board, the reliability that oil price is shown is particularly important.And oil product is used as and adds
The principal products of business of petrol station, although electronic type oil price board reduces considerable human cost, if what display went wrong
Words, can also bring certain loss to gas station.This requires have to ensure display control in oil price board control program
Accuracy.And it is exactly an all well and good mode to put procuratorial organ's case, it being capable of display of the Guarantee control system to oil price board lamp plate
Control forms closed loop, to do a monitoring in real time to the display of oil price board, once error, can change and handle in time.
Fig. 1 is a kind of oil price board control card without checking functions, is provided with 10 tunnel control mouths on circuit boards；Fig. 2
For a kind of oil price board control card of band point checking functions, it is provided with 10 tunnel control mouths and 10 waypoints inspection mouth on circuit boards.Wherein,
For the oil price board control card without checking functions, closed loop cannot be formed to the display control of oil price board lamp plate, thus be difficult
Ensure the reliability that oil price is shown；And have the oil price board control card of a checking functions for band, mouth is examined due to being additionally arranged 10 waypoints, is led
Cause volume it is generally bigger, it is not bad for large-sized oil price board tower beacon, but for the smaller oil price board tower beacon of size and
Speech, will have installation question.
Furthermore oil price board lamp plate, there are many kinds of type, the driving chip on some oil price board lamp plates supports a point checking functions, and
Driving chip on some oil price board lamp plates does not support a checking functions.For in the past, the oil for not supporting a checking functions is met
Valence board lamp plate can be used without the oil price board control card of a checking functions, this is that there is no problem, but here if there is one day
Oil price board lamp plate be all replaced with support point checking functions oil price board lamp plate, then to start a checking functions, user is necessary
The oil price board control card with point checking functions is re-replaced into, may result in the wasting of resources, and labor intensive, material resources in this way, pole
It is not cost-effective.
Invention content
Therefore, to overcome defect and deficiency in the prior art, the present invention proposes a kind of oil price board control card and one kind
Oil price board system.
Specifically, a kind of oil price board control card that the embodiment of the present invention proposes, including embedded microprocessor and be electrically connected
The communication interface and multi-channel control mouth of the embedded microprocessor are connect, the multi-channel control mouth is for connecting oil price board lamp plate.
In addition, further including：Expansion card connector and input and output direction controlable electric current；Input and output direction controlable electric current electrical connection
Between the embedded microprocessor and the expansion card connector and receive the control of the embedded microprocessor to set
Set input and output direction.
In one embodiment of the invention, input and output direction controlable electric current includes one or more multichannel tri-states
Bidirectional bus transceiver.
In one embodiment of the invention, the communication interface include RS232 serial ports, RS485 serial ports, Ethernet interface,
One or more of jtag interface and USB interface.
In one embodiment of the invention, the oil price board control card further includes multichannel light probe interface.
In one embodiment of the invention, the multi-channel control mouth is multichannel RJ45 network interfaces.
In one embodiment of the invention, the oil price board control card further includes signal driver module, the multichannel control
Donsole is electrically connected the embedded microprocessor by the signal driver module.
In one embodiment of the invention, the oil price board control card further includes expansion card, and the expansion card is provided with
Connector and the multichannel lamp plate connector being electrically connected with the connector, the multichannel lamp plate connector is for connecting oil price board
Lamp plate, the expansion card are connected by the connector with the expansion card connector.
In one embodiment of the invention, each street lamp plate connector in the multichannel lamp plate connector is described embedding
Enter under the control of microsever as point inspection mouth, control card, spare control mouth or cascade Mach-Zehnder interferometer mouth.
In one embodiment of the invention, the multichannel lamp plate connector is multiple RJ45 network interfaces, on the expansion card
The connector be winding displacement interface.
In addition, a kind of oil price board system that the embodiment of the present invention proposes, includes control of intelligent terminal with touch screen, preceding
State multiple oil price board lamp plates of any one oil price board control card and the connection oil price board control card；The intelligent control
Terminal is provided with radio-frequency module and is carried out wireless communication with the radio-frequency module being arranged with the oil price board control card.
From the foregoing, it will be observed that the embodiment of the present invention can reach following one or more advantageous effects：It 1) will be with point checking functions
It control card and rolls into one without the control card of checking functions, realizes the free switching between them；2) oil price board control card is allowed
Use on more flexibly, can be realized by function selection shown in Figure 10；3) it is a kind of reasonable to existing resource
Utilization, avoid the waste of resource；4) load capacity of oil price board control card is expanded；5) various types oil price board lamp plate is allowed
It is mixed to be possibly realized；And 6) installation of oil price board control card is allowed to be influenced smaller by oil price board tower beacon inner space.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become apparent.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
It points out outside, it is not necessary to which scale attached drawing, they only try hard to conceptually illustrate structure and flow described herein.
Description of the drawings
Below in conjunction with attached drawing, the specific implementation mode of the present invention is described in detail.
Fig. 1 is a kind of control mouth distribution schematic diagram of oil price board control card without checking functions in the prior art.
Fig. 2 is control mouth and the point inspection mouth distribution signal of a kind of oil price board control card of band point checking functions in the prior art
Figure.
Fig. 3 is a kind of overall architecture block diagram of oil price board system of the embodiment of the present invention.
Fig. 4 is the module diagram of the main controller of the embodiment of the present invention.
Fig. 5 is the module diagram of the expansion card of the embodiment of the present invention.
Fig. 6 is that the concrete signal flow direction when lamp plate connector of expansion card in the embodiment of the present invention is used as point inspection mouth is shown
It is intended to.
Fig. 7 is that the concrete signal flow direction when lamp plate connector of expansion card in the embodiment of the present invention is used as control mouth is shown
It is intended to.
Fig. 8 is the lamp plate connector part of expansion card in the embodiment of the present invention as point inspection mouth and partly makes as control mouth
The concrete signal of used time flows to schematic diagram.
Fig. 9 is to be relevant to a kind of oil price board tower beacon structural schematic diagram of the embodiment of the present invention.
Figure 10 is a kind of expansion card functional configuration interface schematic diagram of the embodiment of the present invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
It is a kind of oil price board system overall architecture block diagram of the embodiment of the present invention referring to Fig. 3.For entire oil price board system
System, there is the clustered control of network in the front end of oil price board control card, the intelligent control for having control of intelligent terminal, also has traditional remote control
Device controls, they can send control instruction to oil price board control card, and oil price board control card is made corresponding after being connected to instruction
Response, finally display result is shown on oil price board lamp plate.Herein, remote controler is compatible pervious control mode, here
No longer it is developed in details；Control of intelligent terminal typically comprises microprocessor such as microcontroller or arm processor, touch screen for example
Capacitive touch screen, the radio-frequency module such as radio-frequency module of 433MHZ frequencies and some necessary communication interfaces of 800*480
Such as RS232 interface, network interface etc., user can be disposable by radio frequency transmission mode by the parameter set by touch screen
It is issued to oil price board control card, corresponding response is made after parsing instruction by oil price board control card.
In the oil price board system of the present embodiment, it is different from and oil price board control card is divided into band point checking functions in the prior art
Oil price board control card and oil price board control card without checking functions way, but both designs are integrated,
Oil price board control card is divided into main controller and expansion card in structure, and main controller can be used alone in practical applications,
Can also be that main controller and expansion card are used cooperatively.
It is the module diagram of the main controller of the present embodiment referring to Fig. 4.Main controller 400 includes mainly ARM processing
Device 401,10 tunnel control mouths 402, signal driver module 403,4 road light probe interfaces 404, RS232 serial ports 405, RS485 interfaces
406, Ethernet interface 407, radio-frequency module 408, expansion card connector 409, input and output direction controlable electric current 410, power interface
411, jtag interface 412 and USB interface 413.
Wherein, arm processor 401 is but is not limited to STM32F429/439 series A RM chips, and arm processor 401
Other embedded microprocessors can also be substituted for.10 tunnel control mouths 402 are preferably electrically connected by signal driver module 403
401,10 street lamp plate control mouth 402 of arm processor is, for example, RJ45 network interfaces and can connect 10 oil price board lamps by cable respectively
The display driving data of plate such as LED lamp panel, each oil price board lamp plate comes from corresponding control mouth 402.Signal drives
Dynamic model block 403 is, for example, to use multiple 74HC245 family chips, is a kind of eight tunnel tri-state bidirectional bus transceivers, mainly
In order to increase the driving capability of 401 pin of arm processor.4 road light probe interfaces 404 are electrically connected arm processor 401 and for example may be used
To connect the light probe of 4 road 2pin such as popping one's head in photo resistance.RS232 serial ports 405 is electrically connected arm processor 401, can
Debugging mouth as program, to print some Debugging message.RS485 interfaces 406 are electrically connected arm processor 401, are mainly
Equipment for connecting peripheral distance slightly far point, such as light probe.Ethernet interface 407 is, for example, 100 m ethernet mouth and passes through
Network PHY chip connects arm processor 401；In the present embodiment, Ethernet interface 407 can be used for the network collection of oil price board control card
Group's management.Radio-frequency module 408 is electrically connected arm processor 401 and is for example directly welded on the circuit board of main controller 400,
It can be the radio-frequency module of 433MHZ frequencies；Radio-frequency module 408 can wirelessly receive the controls letters such as price modification data
Number, it may also be used for the program update (namely supporting wireless update) of arm processor 401.Expansion card connector 409 expands for connecting
Zhan Ka connects ARM processors 401 by input and output direction controlable electric current 410.Here, input and output direction controlable electric current
410 may be used eight tunnel tri-state bidirectional bus transceiver 74HC245 family chips, not only can switch input and output direction also
Signal enhancing may be implemented；Certainly, input and output direction controlable electric current 410 can also use other multichannel tri-state bidirectional buses to receive
Sending out device either only has the circuit of input and output direction handoff functionality；For using the situation of 74HC245 family chips,
74HC245 family chips are a kind of chip of 8 double-direction controls, and externally it is used for controlling communication direction there are one pin, passes through
The outbound course of 74HC245 chips can be controlled by adjusting the low and high level of this pin；If only doing a unidirectional communication,
Only need this pin be connected into high level or low level can, and in the present embodiment, this pin is by ARM processing
The I/O mouths of device 401 control, and the communication directions of such 74HC245 family chips reforms into variable.Power interface 411 passes through
Low pressure difference linear voltage regulator (not drawn in Fig. 4) is electrically connected arm processor 401, is, for example, the power interface of 12V.JTAG
Interface 412 is electrically connected arm processor 401, and downloading mouth mainly as program uses.USB interfaces 413 are electrically connected arm processor
401, the program update that can be used for arm processor 401 is used as the newer backup of program for radio-frequency module 408
Design.Herein it is noted that main controller 400 for the present embodiment, the communication interface configured are gone here and there as RS232
Mouth 405, RS485 serial ports 406, Ethernet interface 407, jtag interface 412 and USB interface 413 etc. can be according to the need of practical application
It wants appropriate to increase or decrease；In addition, in certain embodiments, as 4 road light probe interfaces 404, even radio-frequency module 408
It is contemplated that dispensing.
It is the module diagram of the expansion card of the present embodiment referring to Fig. 5.Specifically, expansion card 500 and main controller
400 be separated in structure, and expansion card 500 is connected through mouth 501 (being, for example, winding displacement interface) and can be connected via winding displacement
To the expansion card connector 409 (be, for example, winding displacement interface) of main controller 400, and 10 street lamp plate connectors of expansion card 500
503 (such as 10 road RJ45 network interfaces) are electrically connected its connector 501 and constitute 10 paths.The main function of expansion card 500：One
It is that 10 street lamp plate connectors 503 now put checking functions as point inspection cause for gossip；Second is that 10 street lamp plate connectors 503 are realized as control mouth
The output on 20 tunnels simultaneously；Third, being used as spare mouth some or all of in 10 street lamp plate connectors 503, spare control mouth is realized
Function；Fourth, realizing the cascade function of oil price board lamp plate.
It holds above-mentioned, 4 signal wires is typically needed for the display control of each oil price board lamp plate such as LED lamp panel,
I.e. lamp plate enables control line, data line, clock line and data and latches line；And main controller 400 uses meeting with the collocation of expansion card 500
There are following several situations namely situation (a), (b), (c), (d), (e) and (f).
【Situation (a)】：Without using expansion card 500, main controller 400 independent can control 10 road binders valence board lamp plates
Normal display, only cannot carry out a prosecution system to oil price board lamp plate, be equivalent to the pervious oil price board control without checking functions
Fabrication；
【Situation (b)】：10 street lamp plate connectors 503 of expansion card 500 are used as point inspection mouth, this when, input is defeated
The communication direction of such as 74HC245 family chips of outgoing direction controlable electric current 410 is configured to input；And data line is activated,
His three signal wires are disabled, and point inspection result will transfer back to the arm processor 401 of main controller 400 by data line, by ARM
Processor 401 carries out the analysis of result and makes corresponding processing.For example after point inspection data are sent back, find the LED light of damage
Point is too many, this when, main controller 400 will active reporting host computer such as PC machine, send out alarm to host computer, call phase
Personnel are answered to lose no time to handle.
10 street lamp plate connectors 503 of expansion card 500 as point inspection mouth uses when concrete signal flow to as shown in fig. 6,
Host computer sends starting point inspection instruction first, after main controller 400 receives an inspection instruction, starts to send to oil price board lamp plate specific
Control stream, drive oil price board lamp plate such as LED lamp panel on display driver chip opening point checking functions, point checking functions open
Afterwards, the state of each lamp point is detected, and then returns to 0 if it is open circuit, 1 is returned if normal, to constitute a string of characterization lamps
The binary code (being constituted by 0,1) of dotted state is sent to expansion card 500, because of 10 street lamp plate connectors of current extensions card 500
503 be main controller 400 will to be sent to by expansion card 500 so putting and examining result data, main controller as an inspection mouth
400 analysis sites examine data, if lamp point be open a way number it is relatively more, to host computer Result, because this when is oily
Valence board lamp plate may go wrong.Here host computer can be remote controler, be equipped with upper computer software PC machine, Fig. 3
Shown in control of intelligent terminal or network service end.
【Situation (c)】：10 street lamp plate connectors 503 of expansion card 500 are used as control mouth, this when, and input is defeated
The communication direction of such as 74HC245 family chips of outgoing direction controlable electric current 410 is arranged to export by arm processor, and each lamp
Four signal wires of plate connector 503 all come into force, this 10 street lamp plate connector 503 can serve as additional control mouth in this way
Corresponding oil price board lamp plate is controlled, the load capacity of main controller 400 is increased to 20 tunnels.
When 10 street lamp plate connectors 503 of expansion card 500 are used as control mouth concrete signal flow direction as shown in fig. 7,
The source of data is host computer, and host computer sends control instruction and such as changes the instructions such as oil price, modification brightness.Main controller 400
After receiving control instruction, constructs corresponding control diffluence driving oil price board lamp plate such as LED lamp panel and normally show.If oil price board
Lamp plate is connected on expansion card 500, then after its required data needs is organized by main controller 400, then 500 hair of expanded card
It is sent to oil price board lamp plate, accessory of the expansion card 500 as a kind of main controller 400, and without the ability to work independently.
【Situation (d)】：Part in 10 street lamp plate connectors 503 of expansion card 500 is as point inspection mouth and partly as control
Donsole.It mentioned before, and had display driver chip on oil price board lamp plate, and some display driver chips support point inspection work(
Can, some display driver chips do not support some checking functions；So one in 10 street lamp plate connectors 503 of expansion card 500
Divide lamp plate connector that a point inspection mouth can be used as to use, be mainly used for those and connect the oil price board lamp plate with inspection ability, and remains
Remaining lamp plate connector can serve as control mouth use, and mostly band is gone to carry a few road binders valence board lamp plates；And specific implementation is logical
It crosses arm processor 401 to be arranged to input by the communication direction of the part in input and output direction controlable electric current 410, another portion
The communication direction divided is arranged to export.
Part in 10 street lamp plate connectors 503 of expansion card 500 as point inspection mouth and part as control mouth when tool
Body signal flows to as shown in figure 8, host computer sends instructions to main controller 400 first, and it is laggard that main controller 400 receives instruction
Row parsing, then drives corresponding oil price board lamp plate to be shown, and can support an oil price board lamp plate for inspection that can also connect
The point inspection mouth (namely part lamp plate connector in 10 street lamp plate connectors 503) on expansion card 500 is connect, then by an inspection result
It carries out being sent to main controller 400 by expansion card 500.
【Situation (e)】：10 street lamp plate connectors 503 of expansion card 500 can also partly or entirely be used as spare control mouth
It uses；The setting of spare control mouth mainly other normal use control mouths go wrong or using it is abnormal when,
Can enable spare control mouth, namely on main controller 400 by the data channel of spare control mouth with go wrong or use
Volume data channel corresponding to abnormal control mouth carries out logic association and will be connected to go wrong or using abnormal control
The signal wire of donsole such as cable switches to the spare control mouth of connection, to make oil price board tower beacon normal.
【Situation (f)】：Expansion card 500 realizes the cascade function of oil price board lamp plate, this is because for main controller 400
It says, each control mouth, not only can only be with one piece of oil price board lamp plate be carried, it can also realize cascade control mode, therefore can
Realize that oil price board lamp plate cascades respectively so that 10 street lamp plate connectors 503 on expansion card 500 are provided as cascade Mach-Zehnder interferometer mouth
Control.For example encounter oil price board tower beacon building mode shown in Fig. 9, three pieces of oil price board lamp plates with a line can use cascade
Mode, only take up a control mouth in this way, so that it may with.
Specifically, in fig.9, oil price board tower beacon be a triangular prism geometry rather than the cuboid of conventional
Structure, generally can all have on oil price board lamp plate such as each face on three faces of this triangular prism structure has three row oil price board lamps
Plate, and the display content in three oil price board lamp plates with a line on three faces is the same, so for three face Zhong Chu
It can be controlled in cascaded fashion in three oil price board lamp plates of same a line, and without the other controls of extra occupancy
Mouthful.Certainly theoretically for display content in three oil price board lamp plates with a line on three faces can also be different
's.
Certainly, the function switch of 10 street lamp plate connectors 503 on expansion card 500 needs to participate in by host computer,
Because expansion card 500 is not aware which type of work oneself will face is in itself, there are mainly two types of configuration modes, a kind of
It is the PC machines for being equipped with special upper computer software, passes through special configuration software, so that it may realizes to 500 function of expansion card
Selection；Certainly the function of configuration expansion card 500 is also that can be realized by control of intelligent terminal shown in Fig. 3, host computer
Software be mainly used for whole system do not have control of intelligent terminal participation in the case of.
Referring to Figure 10, for example shown in Figure 10, the left side is that the channel number of expansion card 500 is (corresponding at expansion card functional configuration interface
10 street lamp plate connectors 503 of expansion card 500), the right is function select button, can select to extend by function select button
Some channel of card 500 is configured to specific functional mode, the drop-down menu of function select button for example including：Point inspection mouth
Four options such as function, control mouth function, spare control mouth function, cascade Mach-Zehnder interferometer mouth function.The function in 10 channels is all right
After should configuring, send button is clicked, configuration information will be sent on main controller 400, to complete main controller 400
Configuration.
In conclusion the embodiment of the present invention can reach following one or more advantageous effects：It 1) will be with point checking functions
It control card and rolls into one without the control card of checking functions, realizes the free switching between them；2) oil price board control card is allowed
Use on more flexibly, can be realized by function selection shown in Figure 10；3) it is a kind of reasonable to existing resource
Utilization, avoid the waste of resource；4) load capacity of oil price board control card is expanded；5) various types oil price board lamp plate is allowed
It is mixed to be possibly realized；And 6) installation of oil price board control card is allowed to be influenced smaller by oil price board tower beacon inner space.
Finally it is worth mentioning that the number of the control mouth 402 on main controller 400 and the lamp plates on expansion card 500
The number of connector 503 is not limited to 10, can be designed according to actual demand elasticity.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as be without departing from technical solution of the present invention content, it is right according to the technical essence of the invention
Any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of oil price board control card, including the communication of embedded microprocessor and the electrical connection embedded microprocessor connect
Mouth and multi-channel control mouth, the multi-channel control mouth is for connecting oil price board lamp plate；It is characterized in that, further including：Expansion card connects
Mouth and input and output direction controlable electric current；Input and output direction controlable electric current be connected electrically in the embedded microprocessor and
Between the expansion card connector and receive the control of the embedded microprocessor so that input and output direction is arranged；
The oil price board control card further includes expansion card, and the expansion card is provided with connector and is electrically connected with the connector
Multichannel lamp plate connector, for the multichannel lamp plate connector for connecting oil price board lamp plate, the expansion card passes through the connection
Mouth is connected with the expansion card connector；
Each street lamp plate connector in the multichannel lamp plate connector is used as point under the control of the embedded microprocessor
Examine mouth, control mouth, spare control mouth or cascade Mach-Zehnder interferometer mouth；
When the multichannel lamp plate connector examines mouth in use, input and output direction controlable electric current is set as input shape as point
State, point inspection result are transferred to the embedded microprocessor by the multichannel lamp plate connector；
When the multichannel lamp plate connector as control mouth in use, input and output direction controlable electric current be set as output shape
State, control data are transferred to the multichannel lamp plate connector by the embedded microprocessor；
When the multichannel lamp plate connector part is as point inspection mouth and partly as control mouth in use, the input and output direction
Controlable electric current is set as output and input state, and control data are transferred to part by the embedded microprocessor and are used as control
The multichannel lamp plate connector of mouth, then inspection result is used as to the multichannel lamp plate connector transmission for a little examining mouth by part
To the embedded microprocessor.
2. oil price board control card as described in claim 1, which is characterized in that input and output direction controlable electric current includes one
A or multiple multichannel tri-state bidirectional bus transceivers.
3. oil price board control card as described in claim 1, which is characterized in that the communication interface include RS232 serial ports,
One or more of RS485 serial ports, Ethernet interface, jtag interface and USB interface.
4. oil price board control card as described in claim 1, which is characterized in that further include multichannel light probe interface.
5. oil price board control card as described in claim 1, which is characterized in that the multi-channel control mouth is multichannel RJ45 network interfaces.
6. oil price board control card as described in claim 1, which is characterized in that further include signal driver module, the multichannel control
Donsole is electrically connected the embedded microprocessor by the signal driver module.
7. oil price board control card as described in claim 1, which is characterized in that the multichannel lamp plate connector is multiple RJ45 nets
Mouthful, the connector on the expansion card is winding displacement interface.
Include control of intelligent terminal with touch screen, as described in claim 1 to 7 any one 8. a kind of oil price board system
Oil price board control card and the connection oil price board control card multiple oil price board lamp plates；The control of intelligent terminal setting
There is radio-frequency module to be carried out wireless communication with the radio-frequency module being arranged with the oil price board control card.
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| KR100423969B1 (en) * | 2001-11-16 | 2004-03-22 | 삼성전자주식회사 | Field bus interface board and control method thereof |
| CN103500542A (en) * | 2013-09-26 | 2014-01-08 | 西安诺瓦电子科技有限公司 | Led lamp panel |
| CN203839013U (en) * | 2014-03-28 | 2014-09-17 | 昆明盛策同辉数字科技有限责任公司 | Extensible display system controller |
| CN105206227A (en) * | 2015-10-15 | 2015-12-30 | 西安诺瓦电子科技有限公司 | Method for driving LED lamp panel and oil price board control card |
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Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Nova Nebula Technology Co., Ltd. Address before: 710075 Qinfengge D District 201, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xian Novastar Electronic Technology Co., Ltd. |