CN103035035B - Automatic fare collection system main control unit - Google Patents
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Abstract
The invention relates to an automatic fare collection system main control unit which comprises a component object model (COM) express module, an input and output control module, an audio encoding and decoding module, a peripheral component interconnect (PCI)-industry standard architecture (ISA) change-over bridge and a reader-writer circuit. The audio encoding and decoding module and the PCI-ISA change-over bridge are connected with the COM express module. The reader-writer circuit is connected with the PCI-ISA change-over bridge. The audio encoding and decoding module comprises one way of audio input and one way of audio output. A PCI bus can be converted into an ISA bus through the PCI-ISA change-over bridge. The reader-writer circuit is used for reading information of tickets. The automatic fare collection system main control unit is high in expandability and flexibility. Port resource and size of a support plate can be collocated and adjusted flexibly according to requirements. The requirements of different projects can be met through different flexible collocation and combination of the COM module and the support plate, workload for designing the support plate is relatively small, development period is shortened, and meanwhile development cost is reduced. Ticket checking speed is improved through communication of a parallel bus and the COM module.
Description
Technical field
The present invention relates to AFC terminal device, particularly relate to a kind of rail traffic ticket automatic selling and checking system main control unit.
Background technology
At present, in field of track traffic, the mainboard used in various AFC (Automatic Fare Collection) equipment is all the industrial control mainboard of standard substantially.Different AFC system (Auto Fare Collection, AFC) interface of project and AFC equipment, the demand such as function and performance are all different, often need industrial control mainboard again type selecting or customization because of the change of the factors such as structure, interface requirements, functional requirement, performance requirement, cost control.The existing mainboard of industrial computer manufacturer is often difficult to the demand meeting various AFC equipment completely in interface, structure, cost and performance etc., need again to customize the industrial control mainboard satisfied the demands, the development and Design cycle is longer, correspondingly also can have a strong impact on the construction cycle of AFC equipment, AFC equipment development cost also can be caused to increase to some extent simultaneously.
Summary of the invention
Based on this, be necessary to provide a kind of versatility comparatively strong, carry out change in design comparatively simply, AFC system main control unit flexibly.
A kind of AFC system main control unit, comprise COM Express module, input/output control module, audio coding decoding module, PCI turn ISA connection-bridge and noncontact IC card read/write device circuit, described input/output control module, audio coding decoding module and PCI turn ISA connection-bridge and connect described COM Express module, and described noncontact IC card read/write device circuit connects described PCI and turns ISA connection-bridge; Described input/output control module is for expanding connection IO interface, described audio coding decoding module comprises a road audio frequency input and a road audio frequency exports, described PCI turns ISA connection-bridge for pci bus is converted to isa bus, and described noncontact IC card read/write device circuit is for reading ticket card information.
Wherein in an embodiment, also comprise power interface circuit, described power interface circuit comprises or door and power control circuit, and described or door is connected with power knob and described input/output control module, described power control circuit and described COM Express model calling; From power knob or the input end that is connected to two inputs or door from the start/standby trigger pip of outside, or the output terminal of door is connected to SUPER I/O circuit.When described outside starting-up signal or button starting-up signal through or send start trigger pulse to described input/output control module behind the door, after SUPER I/O circuit receives start trigger pip, SUPER IO chip sends a low pulse signal to the south bridge of described COM Express module, sends a lasting high level control described power control circuit to export 12 volts power supply by the output terminal of self and to COM Express module, described AFC system main control unit is started shooting by south bridge.After trigger standby signal under open state, similar with start process, the 12 volts of power supplys making output terminal export to COM Express module for power control circuit described in a lasting low level control that just south bridge sends to power control circuit disconnect.
Wherein in an embodiment, described power control circuit comprises PMOS, NMOS tube, filter unit, PMOS grid series resistor and NMOS tube drain electrode pull-up resistor, described filter unit connects 12 volts of power inputs, the source electrode of described PMOS connects described filter unit, described pull-up resistor connects the source electrode of described PMOS, described PMOS grid series resistor and described pull-up resistor are connected the drain electrode of described NMOS tube after connecting, the common port of 2 resistance connects the grid of described PMOS, the drain electrode of described PMOS is the output terminal of described power control circuit, the grid of described NMOS tube connects the south bridge of described COM EXPRESS module through resistance, the source ground of described NMOS tube.
Wherein in an embodiment, described power control circuit also comprises TVS pipe, filter capacitor, described TVS pipe is connected to described 12 volts between power input and filter unit, and the negative electrode of described TVS pipe connects described 12 volts of power supply positive input terminals, the plus earth of described TVS pipe; Described filter capacitor one end connects the drain electrode of described PMOS, the other end ground connection of described filter capacitor.
Wherein in an embodiment, described input/output control module is super input/output control circuit, by LPC(Low Pin Count) bus connects described COM Express module, and described super input/output control circuit connects PS/2 interface, parallel port, multiple COM port and multiple universal input/output interface for expanding.
Wherein in an embodiment, the quantity of described super input/output control circuit is 4.
Wherein in an embodiment, described reader circuitry comprises impact damper, address decoding circuitry, SAM(secure access module) card interface integrated circuit and radio frequency signal processing circuit, described SAM card interface integrated circuit and radio frequency signal processing circuit to be connected described PCI by address decoding circuitry and to turn the isa bus that ISA connection-bridge changes out with impact damper, described AFC system main control unit also comprises the input expander and the out-expander that are connected described isa bus by described address decoding circuitry with impact damper.
Wherein in an embodiment, described input expander and out-expander respectively have one, provide 16 tunnel input and output respectively, the quantity of described SAM card interface integrated circuit and radio frequency integrated circuit is 2, 4 interrupt request lines of described isa bus are connected with described 2 SAM card interface integrated circuit and 2 radio frequency signal processing circuit respectively, 4 address bus SA0 to SA3 of described isa bus through described impact damper to strengthen after driving force all with described 2 SAM card interface integrated circuit, 2 radio frequency signal processing circuit, input expander and out-expander connect, 6 address bus SA4 to SA9 of described isa bus are decoded into 8 chip select lines through described address decoding circuitry, wherein 4 connect described 2 SAM card interface integrated circuit and 2 radio frequency integrated circuit respectively, two in other 4 connect described input expander, article two, connect described out-expander, 8 data buss of described isa bus through described impact damper to strengthen after driving force all with described 2 SAM card interface integrated circuit, 2 radio frequency signal processing circuit, input expander and out-expander connect, the control line of reading of described isa bus is connected described address decoding circuitry with after impact damper enhancing driving force described in write line, 2 SAM card interface integrated circuit and 2 radio frequency signal processing circuit, the reseting signal line of described isa bus connects described 2 radio frequency signal processing circuit.
Wherein in an embodiment, also comprise PORT80 interface fault code display circuit, it is described that PORT80 interface fault code display circuit comprises PORT80 code translator, PORT80 code translator is connected with pci bus, 14 current-limiting resistances, the first charactron and the second charactrons, 7 output terminal LED_A1 to LED_DG1 of described PORT80 code translator are respectively connected to the first charactron through a current-limiting resistance, and 7 output terminal LED_A2 to LED_DG2 of described PORT80 code translator are respectively connected to the second charactron through a current-limiting resistance.
Wherein in an embodiment, described COM Express module is TYPE 2 type, described AFC system main control unit also comprises the IDE hard disk connector and CF card connector that are connected by the ide interface of COM Express module, and by gigabit ethernet card that the PCI-E bus of described COM Express module connects.Support plate is also provided with 1 PCI-E x 1 expansion slot and 1 the PCI expansion slot use in order to expansion.The signaling interface (USB, VGA, LVDS, LAN, SATA etc.) that other COM EXPRESS modules self have possessed, module there is no corresponding external interface connector, these signals need be caused support plate through the connector between COMExpress module and support plate, support plate is installed corresponding external connector.
Relative to traditional use industrial control mainboard scheme, AFC system main control unit (AFC mainboard) based on COM Express framework has higher extensibility and dirigibility, interface resource also can configure neatly as required and adjust, the size needing flexible design support plate also can installed according to device structure.Because COM Express module 10 has the definition of the structure of standard, interface and interface, module and support plate are separated from each other, therefore can according to concrete application, choice for use different processor, comprise low-power consumption, low cost or other high-performance polycaryon processor, can be arranged in pairs or groups neatly, be combined to meet by different COM Express modules and support plate the demand of disparity items, the COM Express module that can realize different vendor is exchanged and is used.Also COM Express module can be kept constant, the external interface of adjustment System, now only need to redesign support plate, greatly can shorten the construction cycle.Because be integrated with most processor complicated architectures and relevant basic circuit in COM Express module, processor and most of common computer interface all complete in COM Express module, so the workload of design support plate is relatively less, relative in prior art again type selecting and customization industrial control mainboard, reduce complexity, shorten the construction cycle, reduce cost of development simultaneously.By the processor of COM Express module, the ticket card data that reader circuitry reads directly are processed, processing speed is more a lot of soon than the speed of the single-chip microcomputer that traditional use read write line carries or arm processor process, improve the efficiency of swiping the card of ticket card, and then improve ticket checking speed.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of AFC system main control unit in an embodiment;
Fig. 2 is the circuit structure block diagram that in an embodiment, power interface circuit connects COM Express module;
Fig. 3 is the circuit theory diagrams of power control circuit in an embodiment;
Fig. 4 is the circuit theory diagrams that in an embodiment, reader circuitry connects PCI-ISA connection-bridge;
Fig. 5 is the circuit theory diagrams of PORT80 interface fault code display circuit in an embodiment;
Fig. 6 is the circuit structure block diagram of AFC system main control unit in another embodiment.
Embodiment
For enabling object of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
The industrial control mainboard interface of standard lacks extendability and dirigibility, different AFC system (AutoFare Collection, AFC) project often to the interface of mainboard and resource distribution demand all not quite alike, if the size of outsourcing industrial control board, resource and interface do not satisfy the demands, the cycle of customization or type selecting can be long again.Due to the restriction by AFC device modeling and installing space, use the dirigibility that standard-sized industrial master board is adapting to AFC equipment whole machine installation configuration aspects will be weaker.In traditional AFC mainboard scheme, only include relevant computer interface in the mainboard of AFC equipment, do not comprise noncontact IC card read/write device circuit.The noncontact IC card read/write device of namely traditional AFC equipment is independently module, read write line exchanges data by serial ports and industrial master board, the data of reading and writing IC card are processed by the single-chip microcomputer on reader/writer module or arm processor, the speed of data transmission and process is relatively slow, correspondingly can have influence on ticket checking efficiency, and field of track traffic is more and more higher to ticket checking rate request, the such as work hours in a line city, working clan often needs the wait ticket checking that lines up, if ticket checking speed greatly can affect social production more slowly.
COM Express standard manufactures association (PICMG) the computer module standard that defines by PCI industrial computer, it defines COM(COMPUTER ON MODULE) physical size, and COM support plate (Carrier Board) between interface and connector etc.COM Express standard is based on newer bussing technique, and the peripheral hardware being applicable to current most high-performance CPU, COM Express module generally includes USB 2.0, SATA, PATA, Ethernet, VGA, LVDS, SDVO, PCI and PCI-Express etc.PICMG defines several pin assignment type, and every type has the combination of specific peripheral hardware, expansion interface and connector layout, and the main Types of the COM Express module specified in COM Express standard has TYPE1 ~ TYPE6.A CPU and minimum system thereof are made a module by COM Express module exactly, and this module can be inserted on the support plate of user's designed, designed, support plate comprises whole external interfaces of user's request, COM module forms the mainboard of special purpose together with support plate.
At present, in field of track traffic, the mainboard used in various AFC (Automatic Fare Collection) equipment is all the industrial control mainboard of standard substantially.Different AFC projects and the interface requirements of AFC equipment, function and performance requirement all different, often need industrial control mainboard again type selecting because of the change of the factors such as structure, interface requirements, functional requirement, performance requirement, cost control, the existing mainboard of industrial control mainboard production firm is often difficult to the demand meeting AFC equipment completely in interface, structure, cost and performance etc.As needed again to customize the industrial control mainboard satisfied the demands, the development and Design cycle is longer, also can have a strong impact on the construction cycle of AFC equipment accordingly.
Based on this, the invention provides a kind of mainboard based on COM Express framework, i.e. a kind of AFC system main control unit meeting COMExpress standard.Comprised processor and related chips group in COM Express module, the common conventional computer interface of major part has all been integrated in COM Express module, and the present invention mainly designs a with the matching used support plate of COM Express module.Whole signals of COM Express module are connected on COM Express support plate through connector, interface due to the extraction of COM Express module can not meet the requirement of AFC completely, the present invention also extends some interfaces on COM Express support plate, and on support plate, incorporate a part of AFC application circuit.COM Express module forms AFC system main control unit together with COM support plate.
Fig. 1 is the circuit structure block diagram of AFC system main control unit in an embodiment, comprises COMExpress module 10, input/output control module 210, audio coding decoding module 220, PCI-ISA connection-bridge 230 and noncontact IC card read/write device circuit 240.COM Express module 10 is respectively by lpc bus (Low Pin Count Bus), audio coding signal line (AC-Link) and PCI(PeripheralComponent Interconnect, peripheral parts interconnected) bus connection input/output control module 210, audio coding decoding module 220 and PCI-ISA connection-bridge 230.PCI turns ISA connection-bridge 230 by ISA(IndustrialStandard Architecture, industrial standard architectures) bus connection noncontact IC card read/write device circuit 240.
Input/output control module 210 for expanding connection IO interface, such as COM port (COM), parallel port (LPT), for connecting the PS/2 interface and universal input/output interface (GPIO) etc. of mouse or keyboard.Wherein in an embodiment, input/output control module adopts super input/output control circuit (Super IO Controller).
Audio coding decoding module 220 comprises a road audio frequency input and a road audio frequency exports, and can also comprise a road microphone input.PCI-ISA connection-bridge 230 is for being converted to isa bus by pci bus, and noncontact IC card read/write device circuit 240 is for reading ticket card information.
Relative to traditional use industrial control mainboard scheme, AFC system main control unit (AFC mainboard) based on COM Express framework has higher extensibility and dirigibility, interface resource also can configure neatly as required and adjust, the size needing flexible design support plate also can installed according to device structure.Because COM Express module 10 has the definition of the structure of standard, interface and interface, module and support plate are separated from each other, therefore can according to concrete application, choice for use different processor, comprise low-power consumption, low cost or other high-performance polycaryon processor, can be arranged in pairs or groups neatly, be combined to meet by different COM Express module 10 and support plate the demand of disparity items, the COM Express module 10 that can realize different vendor is exchanged and is used.Also COM Express module 10 can be kept constant, the external interface of adjustment System, now only need to redesign support plate, greatly can shorten the construction cycle.Because be integrated with most processor complicated architectures and relevant basic circuit in COM Express module 10, processor and most of common computer interface all complete in COM Express module 10, so the workload of design support plate is relatively less, relative in prior art again type selecting and customization industrial control mainboard, reduce complexity, shorten the construction cycle, reduce cost of development simultaneously.Ticket card data are directly processed the data that noncontact IC card read/write device circuit 240 reads by the processor of COM Express module 10, processing speed is more a lot of soon than the speed of the single-chip microcomputer that traditional use read write line carries or arm processor process, improve the efficiency of swiping the card of ticket card, and then improve ticket checking speed.
Wherein in an embodiment, COM Express module 10 is TYPE 2 type.TYPE 2 type COM Express module compares the interface requirements being suitable for AFC mainboard, and support plate only needs the interface that expansion is less in addition.COM Express standard has 2 kinds of standard size: 95x95mm and 95x125mm for the size definition of module, and during design support plate, mounting hole site and connector need these two kinds of sizes compatible.The signal of COM Express module 10 is connected with support plate through the connector of AB with CD two 220 pins (PIN).The TYPE 2 type COM Express module that COMExpress standard specifies comprises PCI-E interface, LPC interface, VGA monitor signal interface, SDVO interface, pci interface, 4 road SATA interfaces, 1 tunnel LAN interface, 8 USB2.0 interfaces, LVDS monitor signal interfaces etc., these signals cause support plate through the connector between COM module and support plate, install corresponding external connector for external signaling interface (USB, SATA, LAN, VGA, LVDS etc.) on support plate.Support plate is also provided with 1 PCI-E x 1 expansion slot and 1 the PCI expansion slot use in order to expansion.
In traditional AFC mainboard scheme, do not have automatic Opportunity awaiting control for linear signal, after AFC equipment stops operation, uncontrollable mainboard enters holding state automatically to reduce power consumption.Therefore, be necessary to increase to AFC system main control unit to control its function of starting shooting or entering holding state by outside start/standby signal.
Please refer to Fig. 2, in the embodiment depicted in figure 2, AFC system main control unit also comprises power interface circuit.AFC system main control unit adopts external AT power mode to power, and can control main-board on-off by power knob.In this embodiment, produce+5V power supply by the DC-DC circuit 252 that 12V turns 5V and be that support plate is powered and as the standby power 5VSB of COM Express module 10, during shutdown, standby power 5VSB still keeps energising.Understandable, if replace AT power supply with ATX power supply in other embodiments, then export because ATX power supply carries+5VSB and+3.3V, DC-DC circuit 252 can be omitted, and now needs PS-ON# signal SUPER I/O controller being used for control ATX power supply to be connected to the Energy control pin (PS-ON) of ATX power supply.Power interface circuit comprises or door and power control circuit 250, the start or standby of AFC system main control unit can be controlled by power knob or outside starting-up signal, the starting-up signal that its peripheral starting-up signal and power knob are sent is formed or logic, as long as one of them signal effectively.Give a pulse signal to super input/output control circuit when pressing power knob, also a pulse signal can be produced to super input/output control circuit by outside starting-up signal, the PWRTN# signal end of low pulse signal to COM Express module 10 south bridge can be sent after super input/output control circuit receives this signal, send start/standby signal SLP_S3# by south bridge afterwards.SLP_S3# signal is low level in the standby state, and high level after start, can control the break-make of power control circuit 250 by SLP_S3#, namely controls power control circuit 250 and whether exports the power supply 12V_COM of 12 volts to COM_Express module 10.Like this, at AFC equipment after stopping operation, (i.e. outside standby signal) can be signaled to AFC system main control unit by the relevant controlling plate of equipment, COM Express module 10 is made to enter holding state, now, parts in COM Express module 10 except internal memory all quit work, and COM Express module 10 power consumption is very low.When AFC equipment is opened after operation, send out starting-up signal outside and start shooting to AFC system main control unit.After trigger standby signal under open state, similar with start process, what just south bridge sent to power control circuit 250 is a lasting low level, controls 12 volts of power supplys that power control circuit 250 makes output terminal export to COM Express module 10 and disconnects.
Fig. 3 is the circuit theory diagrams of power control circuit 250 in an embodiment, comprises PMOS Q1, NMOS tube Q2, filter unit 254, the grid series resistor R2 of pull-up resistor R1 and PMOS Q1, the grid series resistor R3 of NMOS tube Q2.Filter unit 254 connects 12 volts of power inputs, the source electrode of PMOS Q1 connects filter unit 254, resistance R1 connects 12VDC power supply, the drain electrode of NMOS tube Q2 is connected after resistance R2 and resistance R1 connect, resistance R1 is connected the grid of PMOS Q1 with the common port of resistance R2, the drain electrode of PMOS Q1 is the output terminal of power control circuit 250, for exporting 12V power supply to COM Express module 10.Between the south bridge that resistance R3 is connected to COM Express module 10 and the grid of NMOS tube Q2, the grid of NMOS tube Q2 connects the SLP_S3# of the south bridge of COM Express module 10, the source ground of NMOS tube Q2 through resistance R3.
In the embodiment shown in fig. 3, power control circuit 250 also comprises Transient Suppression Diode (TVS) D1, the first filter capacitor C7, the second filter capacitor C5 and C6.TVS pipe D1 is connected between 12 volts of power inputs and filter unit 254, and the negative electrode of TVS pipe D1 connects 12 volts of power supply positive input terminals, plus earth.The common port of the grid of first filter capacitor C7 one end contact resistance R3 and NMOS tube Q2, other end ground connection.Second filter capacitor comprises electric capacity C5 parallel with one another and electric capacity C6, and its one end connects the drain electrode of PMOS Q1, other end ground connection.Filter unit 254 specifically comprises the electric capacity C1 ~ C4 of inductance L 1 and 4 ground connection, is wherein connected to inductance L 1 between the unearthed one end of C1 and C2.
When the SLP_S3# that the south bridge of COM Express module 10 sends is high level, NMOS tube Q2, PMOS Q1 conducting, have 12V power supply to be given to COMExpress module 10 through the output terminal output of power control circuit 250; When SLP_S3# is low level, NMOS tube Q2, PMOS Q1 end, and the 12V power supply to COM Express module 10 disconnects.
Fig. 4 is the circuit theory diagrams that in an embodiment, noncontact IC card read/write device circuit 240 connects PCI-ISA connection-bridge 230.Reader circuitry comprises impact damper 242, address decoding circuitry 244, SAM(secure access module) card interface integrated circuit 246 and radio frequency signal processing circuit 248.SAM card interface integrated circuit 246 and radio frequency signal processing circuit 248 to be connected by address decoding circuitry 244 isa bus that PCI-ISA connection-bridge 230 changes out with impact damper 242.In the embodiment shown in fig. 4, AFC system main control unit also comprises the input expander 262 and the out-expander 264 that are connected isa bus by address decoding circuitry 244 with impact damper 242, provides 16 tunnel input and output respectively.In this embodiment, the quantity of SAM card interface integrated circuit 246 and radio frequency signal processing circuit 248 is 2.
In the embodiment shown in fig. 4, the chip of to be frequency the be read/write contactless IC-card of 13.56MHz that radiofrequency signal process integrated circuit 248 adopts, its data-interface is 8 bit parallel interfaces.SAM card interface integrated circuit 246 can realize the conversion of ISO7816 interface to 8 bit parallel interfaces, and it can provide two SAM card interfaces meeting ISO7816 standard, and the data-interface of SAM card interface integrated circuit 246 is also 8 bit parallel buses.This embodiment choice for use isa bus is as the interface of SAM card interface integrated circuit 246 and radio frequency signal processing circuit 248 parallel bus, because COM Express module 10 does not provide ISA interface, utilize PCI-ISA connection-bridge 230 to change out isa bus by pci bus, so just can meet the requirement that high speed parallel bus transmits data.
Please refer to Fig. 4, actual there is no need isa bus signal all to extract when using, only need to use the least-significant byte data bus SD0 to SD7 of isa bus, 10 address bus SA0 to SA9, read control line/IOR, write line/IOW, 4 interrupt request line IRQ3 ~ IRQ6 and reseting signal line RST.The signal annexation of isa bus and noncontact IC card read/write device circuit 240 as shown in Figure 4.Due to isa bus address bus SA0 to SA3, data bus SD0 to SD7, read control line/IOR and write line/IOW will connect multiple integrated circuit, therefore add first-level buffer device 242 to strengthen driving force.After impact damper 242, address bus is A0 to A3, data bus is D0 to D7, read that control line is /RD, write line is /WR.Address bus A0 to A3 is connected with the address wire A0 to A3 of 2 radio frequency signal processing circuit, 248,2 SAM card interface integrated circuit 246 respectively, data bus D0 to D7 is connected with the data line D0 to D7 of radio frequency signal processing circuit 248, SAM card interface integrated circuit 246, input expander 262 and out-expander 264 respectively, read control line/RD and write line/WR respectively with radio frequency signal processing circuit 248, the reading control pin and write control pin and be connected of SAM card interface integrated circuit 246.
The look-at-me saltus step from low to high of the interrupt request line IRQ3 ~ IRQ6 in isa bus represents interrupt request, and signal will keep high level to processor responds this interruption.The look-at-me of 2 SAM card interface integrated circuit 246 is connected with interrupt request line IRQ3, IRQ5 behind the door through non-, and interrupt request line IRQ4, IRQ6 are connected respectively with the interruption pin INT of 2 radio frequency signal processing circuit 248.The reseting signal line RST of isa bus is connected with the reset pin of 2 radio frequency signal processing circuit 248, and reset signal high level is effective, and this signal can be utilized to reset 2 radio frequency signal processing circuit 248.
Address decoding circuitry 244 is for being chip selection signal CS1 ~ CS8 by the signal interpretation of address bus A4 to A9.
Above-mentioned AFC system main control unit, by the data of isa bus transmitting radio frequency signal treatment circuit 248 and SAM card interface integrated circuit 246, improves much than the speed using serial ports to transmit data in conventional art.In addition, noncontact IC card read/write device circuit 240, input expander 262 and out-expander 264 and support plate are combined, does not use independently reader/writer module and IO expander board, decrease the total cost of AFC equipment circuitry plate.
In the embodiment shown in fig. 5, AFC system main control unit also comprises PORT80 interface fault code display circuit 270.PORT80 interface fault code display circuit 270 comprises PORT80 code translator 272,14 current-limiting resistances, the first charactron 274 and the second charactron 276.7 output terminal LED_A2 to LED_DG2 that 7 output terminal LED_A1 to LED_DG1 of PORT80 code translator 272 are respectively connected to the first charactron 274, PORT80 code translator 272 through a current-limiting resistance are respectively connected to the second charactron 276 through a current-limiting resistance.The common port COM ground connection of two charactrons.
The major function of PORT80 interface fault code display circuit 270 circuit is display POST(Power OnSelfTest, powers up rear self-inspection) code.When starting shooting at every turn, BIOS can carry out self diagnosis to the critical component of mainboard, and the testing result of BIOS built in self testing program in mainboard can be utilized to be shown by self diagnosis code by charactron.Corresponding code can be delivered to 80H address, IO space place when performing built in self testing by BIOS, the post code at 80H address, IO space place is read by pci bus, decoded by PORT80 code translator 272 pairs of 80H ports, and by two numeral method hexadecimal digits, each different numerical value represents each program performed by current BIOS.Maintainer tentatively can judge the failure problems of mainboard critical component according to the POST code table of each producer BIOS, improve the maintainability of product.
Fig. 6 is the circuit structure block diagram of AFC system main control unit in another embodiment, this not shown power interface circuit.In this embodiment, the quantity of super input/output control circuit (Super IO Controller) is 4.Super input/output control circuit 1 is in order to provide PS/2 interface, 2 COM port (COM1, COM2), 1 parallel port (LPT), 8 universal input/output interfaces (GPIO1 ~ GPIO8) and power knob interface.Super input/output control circuit 2,3,4 all provides 4 COM port and 8 universal input/output interfaces.Wherein the COM port COM13 that expands of super input/output control circuit 4 and COM14 can be configured to RS232, RS422 or RS485 interface.
The serial ports of AFC equipment use is more, and foregoing circuit provides 14 COM port (COM1 ~ COM14), and serial ports quantity can meet the demand of AFC equipment.As shown in Figure 6, the south bridge of COM Express module 10 can draw 8 universal input/output interfaces, 32 universal input/output interfaces are extended altogether in aforesaid super input/output control circuit 1 ~ 4, input expander 262 and the out-expander 264 of aforementioned isa bus expansion also can be universal input/output interface (each 16 tunnels), the total quantity of such universal input/output interface is 72, can meet the demand of AFC equipment to IO completely.
In the embodiment shown in fig. 6, AFC system main control unit also comprises the IDE hard disk connector and CF card connector that are connected by the ide interface of COM Express module 10, and by gigabit ethernet card that the PCI-E bus of COM Express module 10 connects.Support plate also comprises 1 PCI-E x 1 expansion slot and 1 PCI expansion slot.The signaling interface (USB, VGA, LVDS, LAN, SATA etc.) that other COM EXPRESS modules self have possessed, module there is no corresponding external interface connector, these signals cause support plate through the connector between COM EXPRESS module and support plate, and support plate is installed corresponding external connector.
Above-mentioned AFC system main control unit is particularly useful for the Rail Transit System such as subway, light rail, but also can be applied to other large common facility needing to sell ticket checking, such as cinema, gymnasium, theatre, airport etc.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an AFC system main control unit, comprise COM Express module, it is characterized in that, also comprise input/output control module, audio coding decoding module, PCI turn ISA connection-bridge and noncontact IC card read/write device circuit, described input/output control module, audio coding decoding module and PCI turn ISA connection-bridge and connect described COM Express module, and described noncontact IC card read/write device circuit connects described PCI and turns ISA connection-bridge;
Described input/output control module is for expanding connection IO interface, described audio coding decoding module comprises a road audio frequency input and a road audio frequency exports, described PCI turns ISA connection-bridge for pci bus is converted to isa bus, and described noncontact IC card read/write device circuit is for reading ticket card information.
2. AFC system main control unit according to claim 1, it is characterized in that, also comprise power interface circuit, described power interface circuit comprises or door and power control circuit, described or door is connected with power knob and described input/output control module, described power control circuit and described COM Express model calling;
The starting-up signal that described or door is sent for receiving outside starting-up signal or described power knob, power-on pulse is sent to described input/output control module when receiving described outside starting-up signal or starting-up signal, described power-on pulse delivers to the south bridge of described COM Express module after described input/output control module process, sends high level control described power control circuit to export 12 volts power supply signal by the output terminal of self and to COM Express module, described AFC system main control unit is started shooting by south bridge.
3. AFC system main control unit according to claim 2, it is characterized in that, described power control circuit comprises PMOS, NMOS tube, filter unit, PMOS grid series resistor and NMOS tube drain electrode pull-up resistor, described filter unit connects 12 volts of power inputs, the source electrode of described PMOS connects described filter unit, described PMOS grid series resistor connects the grid of described PMOS, described NMOS tube drain electrode pull-up resistor and described PMOS grid series resistor are connected and are connected the drain electrode of described NMOS tube afterwards, PMOS grid series resistor is connected the grid of described PMOS with the common port of NMOS tube drain electrode pull-up resistor, the drain electrode of described PMOS is the output terminal of described power control circuit, the grid of described NMOS tube connects described south bridge, the source ground of described NMOS tube.
4. AFC system main control unit according to claim 3, it is characterized in that, described power control circuit also comprises Transient Suppression Diode, first filter capacitor, second filter capacitor, NMOS tube grid series resistor, described Transient Suppression Diode is connected to described 12 volts between power input and filter unit, the negative electrode of described Transient Suppression Diode connects described 12 volts of power inputs, the plus earth of described Transient Suppression Diode, described NMOS tube grid series resistor is connected between described south bridge and the grid of NMOS tube, described first filter capacitor one end connects the common port of the grid of described NMOS tube grid series resistor and NMOS tube, other end ground connection, described second filter capacitor one end connects the drain electrode of described PMOS, the other end ground connection of described second filter capacitor.
5. AFC system main control unit according to claim 1, it is characterized in that, described input/output control module is super input/output control circuit, connect described COM Express module by lpc bus, described super input/output control circuit connects PS/2 interface, parallel port, multiple COM port and multiple universal input/output interface for expanding.
6. AFC system main control unit according to claim 5, is characterized in that, the quantity of described super input/output control circuit is 4.
7. AFC system main control unit according to claim 1, it is characterized in that, described noncontact IC card read/write device circuit comprises impact damper, address decoding circuitry, SAM card interface integrated circuit and radio frequency signal processing circuit, described SAM card interface integrated circuit and radio frequency signal processing circuit to be connected described PCI by address decoding circuitry and to turn the isa bus that ISA connection-bridge changes out with impact damper, described AFC system main control unit also comprises the input expander and the out-expander that are connected described isa bus by described address decoding circuitry with impact damper.
8. AFC system main control unit according to claim 7, is characterized in that, described input expander and out-expander respectively have one, provides 16 tunnel input and output respectively; The quantity of described SAM card interface integrated circuit and radio frequency signal processing circuit is 2;
4 interrupt request lines of described isa bus are connected with described 2 SAM card interface integrated circuit and 2 radio frequency signal processing circuit respectively,
4 address bus SA0 to SA3 of described isa bus are all connected with described 2 SAM card interface integrated circuit, 2 radio frequency signal processing circuit, input expander and out-expanders after described impact damper enhancing driving force,
6 address bus SA4 to SA9 of described isa bus are decoded into 8 chip select lines through described address decoding circuitry, wherein 4 connect described 2 SAM card interface integrated circuit and 2 radio frequency signal processing circuit respectively, two in other 4 connect described input expander, two described out-expanders of connection
8 data buss of described isa bus through described impact damper to strengthen after driving force all with described 2 SAM card interface integrated circuit, 2 radio frequency signal processing circuit, input expander and out-expander connection,
The control line of reading of described isa bus is connected described address decoding circuitry, 2 SAM card interface integrated circuit and 2 radio frequency signal processing circuit with after impact damper enhancing driving force described in write line,
The reseting signal line of described isa bus connects described 2 radio frequency signal processing circuit.
9. AFC system main control unit according to claim 1, it is characterized in that, also comprise PORT80 interface fault code display circuit, described PORT80 interface fault code display circuit comprises PORT80 code translator, 14 current-limiting resistances, first charactron and the second charactron, the input end of described PORT80 code translator is connected with pci bus, 7 output terminal LED_A1 to LED_DG1 of PORT80 code translator are respectively connected to the first charactron through a current-limiting resistance, 7 output terminal LED_A2 to LED_DG2 of described PORT80 code translator are respectively connected to the second charactron through a current-limiting resistance.
10. according to the AFC system main control unit in claim 1-9 described in any one, it is characterized in that, described COM Express module is TYPE 2 type, described AFC system main control unit also comprises the IDE hard disk connector and CF card connector that are connected by the ide interface of COM Express module, and by gigabit ethernet card that the PCI-E bus of described COM Express module connects.
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| CN201210508811.3A CN103035035B (en) | 2012-12-03 | 2012-12-03 | Automatic fare collection system main control unit |
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| CN201210508811.3A CN103035035B (en) | 2012-12-03 | 2012-12-03 | Automatic fare collection system main control unit |
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| CN103578146A (en) * | 2013-10-29 | 2014-02-12 | 南京熊猫电子股份有限公司 | General selling and recycling module control panel for automatic ticket selling and checking machine |
| CN105006024B (en) * | 2014-04-15 | 2018-01-12 | 北京仁康华丰科技有限公司 | A kind of magnetic ticket module adaptive device for Automatic fare collection equipment |
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