CN203705865U - Communication plug-in member plate and main control board capable of automatically identifying plug-in member plate communication type - Google Patents
Communication plug-in member plate and main control board capable of automatically identifying plug-in member plate communication type Download PDFInfo
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- CN203705865U CN203705865U CN201320889368.9U CN201320889368U CN203705865U CN 203705865 U CN203705865 U CN 203705865U CN 201320889368 U CN201320889368 U CN 201320889368U CN 203705865 U CN203705865 U CN 203705865U
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Abstract
The utility model provides a communication plug-in member plate and a main control circuit board capable of automatically identifying a communication plug-in member plate communication type. The main control board which is provided in the utility model can automatically identify the communication type of a communication plug-in member plate which is connected in a plugged manner. Under the condition that a plurality of different communication types are needed, the main control board does not need to be redesigned, and the communication plug-in member plate which is provided in the utility model can be used in a plug-and-play manner and therefore can be correctly mounted on the main control circuit board. The problem that the communication type of a communication interface of the main control board needs to be changed is solved in an economical way. The main control board comprises a communication plate input connector, a communication plate output connector, a communication transmit-receive and control circuit, a communication output control circuit, a mini-sized processor unit and a physical communication output interface, wherein the communication plate input connector and the communication plate output connector are used for plugging the communication plug-in member plate, the mini-sized processor unit is connected with the communication plate input connector through the communication transmit-receive and control circuit, and the communication plate output connector is connected with the physical communication output interface through the communication output control circuit.
Description
Technical field
The utility model relates to power communication field, relates in particular to a kind of communication plug plate and automatically identifies the master control borad of plug-in card communication type.
Background technology
Along with development in science and technology, each electronic product automaticity is more and more higher, and the demand of communication is grown with each passing day; For many CPU electronic product, between different CPU, also need communication each other to carry out swap data in order to complete some function, say nothing of between multiple electronic products.
Particularly, in field of power, the equipment of many manufacturers produce, all needs multiplex communication interface, and multiple communication type and miscellaneous equipment carry out system data exchange.For example: certain power monitoring system, need to be with the ammeter of RS485 communication function the collecting device as system, so the product with a minimum road RS485 function will improve in ammeter manufacturer; If this monitoring system needs collecting device many, a road RS485 deficiency has driven connection all devices, so will improve the product with two-way RS485 kinetic energy; Certainly system also likely needs the product of a road CAN function, or the product of two-way CAN function, or the simultaneous product of CANYi road, a road RS485.Face above-mentioned all situations, require product in the situation that other function is constant, communication modes changes.
In order to overcome the above problems, at present, some manufacturers be communicating circuit part and main circuit partial design on a circuit board, in the time that communication function demand changes, just remodify the communicating circuit part of circuit board.This method drawback is to need a variety of circuit boards to meet different demands, for example: in the time of two RS485 interfaces of needs, circuit board communication part just need to make the circuit of two-way RS485 into; But in the time of two CAN interfaces of needs, circuit board communication part just need to make the circuit of two-way CAN into; In like manner, in the time of RS485 interface of needs and a CAN interface, circuit makes different circuit again into, puts upside down down when RS485 interface and CAN interface position, and circuit also will change; So this scheme is both loaded down with trivial details also uneconomical.In order to address this problem, two plug in circuit cards are made respectively CAN communication part and RS485 communication part by some manufacturers, main circuit is made main circuit board, can determine whether installing plug in circuit card according to the communication function of product needed like this, when certain product interface 1 needs RS485 function, interface 2 needs CAN function, and main circuit board interface 1 is just installed RS485 plug in circuit card, interface 2 is just installed CAN plug in circuit card, and whether solved the corresponding interface has the problem of corresponding communication function.But, when interface 1 demand becomes CAN function, when interface 2 demands become RS485 function, also need to remodify main circuit board, therefore also more loaded down with trivial details.
Utility model content
The deficiency existing for prior art, the utility model provides a kind of communication plug plate and automatically identifies the master control borad of plug-in card communication type, the master control borad providing can be identified the communication type of the communication plug plate of grafting automatically, the in the situation that of the multiple different communication type of needs, without redesigning master control borad; The communication plug plate plug and play providing, is convenient to correct being arranged on main control board; In a kind of mode of economy, solve the problem that the communication type of master control borad communication interface need to convert.
The technical solution of the utility model:
A kind of master control borad of automatic identification plug-in card communication type, it is characterized in that, comprise communication board input plug connector, communication board output connector, communication receiving/transmission and control circuit, communication output control circuit, microprocessor unit and physical communication output interface, described communication board input plug connector and the communication board output connector communication plug plate that is used for pegging graft, described microprocessor unit is by communication receiving/transmission and control circuit connecting communication plate input plug connector, and communication board output connector connects physical communication output interface by communication output control circuit; Described communication plug buttress arranges the numeral output of self according to the communication output type of itself, described microprocessor unit identifies the communication type of the communication plug plate of grafting according to self numeral output of communication plug plate setting, export corresponding communication type receiving and transmitting signal, described communication type receiving and transmitting signal is restored on the physical communication output interface of master control borad by described communication plug plate again.
Described communication board input plug connector and communication board output connector comprise the first input plug connector and the first output connector, the second input plug connector and the second output connector, described physical communication output interface comprises the first physical communication output interface and the second physical communication output interface, described the first input plug connector connects microprocessor unit by the first communication receiving/transmission and control circuit, the first output connector connects the first physical communication output interface by the first communication output control circuit, described the second input plug connector connects microprocessor unit by the second communication receiving/transmission and control circuit, the second output connector connects the second physical communication output interface by the second communication output control circuit.
Described the first input plug connector and the first output connector are RS485 or CAN communication board input plug connector and RS485 or CAN communication board output connector, and described the second input plug connector and the second output connector are RS485 or CAN communication board input plug connector and RS485 or CAN communication board output connector.
Described the first input plug connector and the second input plug connector at least comprise respectively 9 pins, wherein, 2 pins are USART receiving and transmitting signal pin, 2 pins are CAN receiving and transmitting signal pin, 1 pin is USART or CAN control signal pin, 2 pins are that numeric type reads pin, and 2 pins are communication plug plate input power pin; Described the first output connector and the second output connector at least comprise respectively 4 pins, and wherein, 2 pins are bus-out signal pin, and 2 pins are communication plug plate insulating power supply output pin.
Described the first communication receiving/transmission and control circuit and the second communication receiving/transmission and control circuit comprise respectively 2 and read pin connecting line and 2 USART signal transmitting and receiving pin connecting lines, 2 CAN signal transmitting and receiving pin connecting lines and 1 USART/CAN control signal pin connecting line for reading the numeric type of the communication plug plate communication type being plugged on described main control board; Described microprocessor unit reads pin connecting line, 2 USART signal transmitting and receiving pin connecting lines, 2 CAN signal transmitting and receiving pin connecting lines by 2 numerals respectively and is connected described the first input plug connector and the second input plug connector with 1 USART/CAN control signal pin connecting line; Described the first communication output control circuit and the second communication output control circuit comprise respectively 1 485A/CANH output signal lead-foot-line and 1 485B/CAN output signal lead-foot-line, and described the first output connector is connected respectively described the first physical communication output interface and the second physical communication output interface with the second output connector with 485B/CAN output signal lead-foot-line by described 485A/CANH output signal lead-foot-line.
The input power pin of described the first input plug connector and the second input plug connector is connected respectively the out-put supply pin of described the first output connector and the second output connector by isolation power supply module; Described isolation power supply module also connects 220V power supply.
A kind of communication plug plate, is characterized in that, comprises respectively and the input plug connector of described master control borad, input inserting terminal, the output inserting terminal that output connector matches, and communication type digital output circuit, buffer circuit and communication type change-over circuit; Described communication type digital output circuit connects input plug terminal, offer master control borad for the numeral output that self is set according to the communication type of itself, described input plug terminal is connected output inserting terminal successively with communication type change-over circuit by buffer circuit, receive the corresponding communication type receiving and transmitting signal of master control borad microprocessor output, return to the physical communication output interface of master control borad.
Described communication plug plate comprises RS485 communication plug plate, comprise digital isolator ADUM1201 and level shifting circuit, the power end of the input plug connector of described RS485 communication plug plate and earth terminal are connected respectively power end and the earth terminal of magnetic isolating device ADUM1201, described input plug connector is by receiving and transmitting signal pin 3, the 4 corresponding signal transmitting and receiving pins 2,3 that connect isolating device ADUM1201; Described input plug connector control signal pin 5 connects the signal input part (being phototriode output terminal) of light isolation device TLP181; The TXD signal output terminal (being pin 7) of described isolating device ADUM1201 connects the receiver lead-out terminal RO of bus level switching device MAX487, and RXD signal output terminal (being pin pin 6) connects the sub-DI of driver input end of bus level switching device MAX487; A signal output terminal ground connection of described light isolation device TLP181, another signal output terminal connects respectively receiver output enable terminal RE and the driver output enable terminal DE of bus level switching device MAX487; Bus level switching device MAX487 is connected with the output connector of RS485 communication plug plate by 4 lead-out terminals; Wherein power end (pin 8) connects output connector pin 3, and earth terminal (pin 5) connects output connector pin 4; The receiver input terminal A of bus level switching device MAX487 connects output connector receiver input terminal A through thermistor PTC1; The sub-B of receiver inverse output terminal connects the sub-B of output connector receiver reverse input end through thermistor PTC2.
Described communication plug plate comprises CAN communication plug plate, comprises digital isolator ADUM1201 and level shifting circuit, and the power end of the input plug connector of described CAN communication plug plate and earth terminal are connected respectively power end and the earth terminal of magnetic isolating device ADUM1201; Described input plug connector is by the corresponding signal transmitting and receiving pin 2,3 that connects isolating device ADUM1201 of receiving and transmitting signal pin 6,7; The sub-T(of signal receiving end that TX signal is sent to level conversion device SN65HVD251 by described isolating device ADUM1201 signal transmitting and receiving pin 6 is pin 1), the sub-R(of signal receiving end that RX signal is sent to level conversion device SN65HVD251 by described isolating device ADUM1201 signal transmitting and receiving pin 7 is pin 4), after converting CAN bus differential level to, pass through signal output terminal (pin 7 and pin 6), via thermistor PTC1 and PTC2, be sent to the signal receiving end (pin 1 and pin 2) of the output connector of CAN communication plug plate.
Technique effect of the present utility model
The utility model provides a kind of communication plug plate and automatically identifies the master control borad of plug-in card communication type, the master control borad providing can be identified the communication type of the communication plug plate of grafting automatically, the in the situation that of the multiple different communication type of needs, without redesigning master control borad; The communication plug plate plug and play providing, is convenient to correct being arranged on main control board; In a kind of mode of economy, solve the problem that the communication type of master control borad communication interface need to convert.The utility model can reach the object of automatic identification and plug and play by the numeral output of different communication plugs.With respect to prior art, the beneficial effects of the utility model are that circuit is simple, with low cost, the in the situation that of the multiple different communication of needs, without redesigning circuit; And be convenient to install, and can effectively prevent from causing due to carelessness the situation of wrong plug, and improve production efficiency, reduce installation fraction defective.
Brief description of the drawings
Fig. 1 is annexation schematic diagram between the utility model main control board and communication plug plate.
Fig. 2 is the circuit theory schematic diagram of the utility model main control board.
Fig. 3 is the utility model main control board circuit diagram.
Fig. 4 is the utility model communication plug plate circuit theory schematic diagram.
Fig. 5 is the utility model RS485 communication plug plate circuit diagram.
Fig. 6 is the utility model CAN communication plug plate circuit diagram.
Fig. 7 is the process flow diagram for the master control borad communication plug plate communication type that identification is pegged graft automatically.
Embodiment
The utility model provides a kind of communication plug circuit, can automatically identify plug-in unit communication type, and plug and play is convenient to install, and in a kind of mode of economy, solves the problems such as communication plug need to exchange.Taking a main control board and two communication plug plates as example, by reference to the accompanying drawings, the utility model is further elaborated.
Fig. 1 is annexation schematic diagram between the utility model main control board and communication plug plate, indicates the position annexation between main control board and communication plug plate.As shown in Figure 1, main control board (abbreviation master control borad) comprises the first input plug connector and the first output connector, the second input plug connector and the second output connector.Main control board is provided with two physical ports, is respectively the first physical communication output port (being first interface) and the second physical communication output port (i.e. the second interface).A represents the input of first on main control board plug connector, and b represents the first output connector on main control board, and c represents the input of second on main control board plug connector, and d represents the second output connector on main control board.Because input connector is different from output connector number of pins, so direction is fixed, communication plug plate is difficult for anti-inserted, is convenient to install.First interface and the second interface are actual physics output port.The first input plug connector and described second is inputted and is put in order identically between the pinout of connector and pin, and putting in order between the pinout of the first output connector and described the second output connector and pin is identical.Be that a is identical with c definition, b is also identical with d definition, and distance is also identical with position to each other, so two communication boards can also can normally be worked by transposition.
Fig. 2 is the circuit theory schematic diagram of the utility model main control board.The utility model main control board at least can patch two communication plug plates, and these two communication plug plates can be same types, can be also dissimilar, even if two plug-in card type differences also can be used by transposition between them.Between main control board and each communication plug plate, be connected by two independent connectors, a plug-in unit is inputted another plug-in unit as communication and is exported as communication, and two connectors have different pins, is convenient to install and prevents wrong plug direction.As shown in Figure 2, the master control borad of a kind of automatic identification plug-in card communication type that the utility model provides, comprise communication board input plug connector, communication board output connector, communication receiving/transmission and control circuit, communication output control circuit, microprocessor unit and physical communication output interface, communication board input plug connector and the communication board output connector communication plug plate that is used for pegging graft, microprocessor unit is by communication receiving/transmission and control circuit connecting communication plate input plug connector, and communication board output connector connects physical communication output interface by communication output control circuit; Communication plug buttress arranges the numeral output of self according to the communication output type of itself, which part communication type signal master control borad, according to this digital output signal, determines to drive to communication input plug-in unit.Can reach the object of automatic identification and plug and play by the numeral output of different communication plugs.Microprocessor unit identifies the communication type of the communication plug plate of grafting according to self numeral output of communication plug plate setting, export corresponding communication type receiving and transmitting signal, communication type receiving and transmitting signal is restored on the physical communication output interface of master control borad by described communication plug plate again.Fig. 2 is taking a RS485 interface and a CAN interface as example.
Fig. 3 is the utility model main control board circuit diagram.
In conjunction with Fig. 2 and Fig. 3, the first input plug connector (being that RS485 communication board 1 is inputted connector) of the utility model main control board at least comprises 9 pins, and this plug-in unit is corresponding with the input on communication board 1.Wherein, 2 pins are for USART1 receiving and transmitting signal, and 1 pin is for USART1 control signal, and 2 pins are for CAN1 receiving and transmitting signal, and 2 pins are for digital read signal, and 2 pins are for providing input power power supply to the first communication plug plate; Described first signal output interface at least comprises 4 pins, and wherein, 2 pins are for bus-out signal, and 2 pins are for providing output isolated power supply power supply to the first communication plug plate.Main control board also comprises the isolation power supply module that connects input power terminal (being J4), and isolation power supply module connects RS485 communication board 1 and inputs plug connector (being J1); Isolation power supply module also connects respectively RS485 communication board 1 output connector (being J2); Microprocessor connects RS485 communication board 1 and inputs plug connector (being J1); On main control board, the first physical communication output port connects RS485 communication board 1 output connector (being J2).
Because the utility model embodiment is taking two communication plug plates as example, two communication plug plates are provided, the first communication plug plate (RS485) and the second communication plug plate (CAN), in like manner, the second communication control circuit (being that CAN communication board 2 is inputted connector) at least comprises 9 pins, and this plug-in unit is corresponding with the input on communication board 2.Wherein, 2 pins are for USART1 receiving and transmitting signal, and 1 pin is for USART1 control signal, and 2 pins are for CAN1 receiving and transmitting signal, and 2 pins are for digital read signal, and 2 pins are for providing input power power supply to the second communication plug plate; Described secondary signal output interface at least comprises 4 pins, and wherein, 2 pins are for bus-out signal, and 2 pins are for providing output isolated power supply power supply to the second communication plug plate.Isolation power supply module connects CAN communication board 2 and inputs plug connector (being called J1 ' herein); Isolation power supply module also connects respectively CAN communication board 2 output connectors (being called J2 ' herein); Microprocessor connects CAN communication board 1 and inputs plug connector (being called J1 ' herein); On main control board, be also provided with the second physical communication output port (being called J3 ' herein), described the second physical communication output port connects CAN communication board 2 output connectors (being called J2 ' herein).
For the ease of installing, input is unequal with output inserter pin, can mistake directionality problem admittedly solved grafting communication board.The input and output connector of communication plug plate 1 is identical with pin definitions and the position of the corresponding input and output connector of communication plug plate 2, makes can exchange plug between plug-in unit; Numeral read signal is used for reading communication board type, and differentiation is RS485 communication or CAN communication; Bus-out signal, for according to pegged graft communication connector, connects RS485 signal or CAN signal as output.The utility model circuit is simple, with low cost, the in the situation that of the multiple different communication of needs, without redesigning circuit; And be convenient to install, and can effectively prevent from causing due to carelessness the situation of wrong plug, and improve production efficiency, reduce installation fraction defective.
Fig. 4 is the communication plug plate circuit theory schematic diagram that the utility model provides.As shown in Figure 4, communication plug plate, comprises and the input plug connector of master control borad, input inserting terminal, the output inserting terminal that output connector matches, and communication type digital output circuit, buffer circuit and communication type change-over circuit; Communication type digital output circuit connects input plug terminal, offer master control borad for the numeral output that self is set according to the communication type of itself, input plug terminal is connected output inserting terminal successively with communication type change-over circuit by buffer circuit, receive the corresponding communication type receiving and transmitting signal of master control borad microprocessor output, return to the physical communication output interface of master control borad.
Fig. 5 is the utility model RS485 communication plug plate circuit diagram.In conjunction with Fig. 4 and Fig. 5, U1 is magnetic isolating device ADUM1201, is responsible for the USART transmitting-receiving level conversion of J1 input to become isolation level, and U3 is RS485 bus level switching device, is responsible for that USART is received and dispatched to isolation level and converts RS485 bus differential level to.U2 is light isolation device TLP181, is responsible for the RS485 bus current control level isolation of J1 input, and being used for controlling USART is to receive or send data.PTC1 and PTC2 are current protection resettable fuse, and R9 is that the bus termination resistance of 120 ohm is used for matching bus resistance, prevents bus reflections.S1 is short circuit wire jumper plug-in unit, with determining whether enabling terminal resistance.
As shown in Figure 5, the power end (being pin 1) of the input plug connector of RS485 communication plug plate (being J1 in Fig. 5) connects the power end (being pin 1) of magnetic isolating device ADUM1201; Input plug connector earth terminal (being pin 2) connects the earth terminal (being pin 4) of isolating device ADUM1201, and input plug connector is by the corresponding signal transmitting and receiving pin 2,3 that connects isolating device ADUM1201 of receiving and transmitting signal pin 3,4; Input plug connector control signal pin 5 connects the signal input part (being phototriode output terminal) of light isolation device TLP181; The TXD signal output terminal (being pin 7) of isolating device ADUM1201 connects the receiver lead-out terminal RO of bus level switching device MAX487, and the RXD signal output terminal (being pin pin 6) of isolating device ADUM1201 connects the sub-DI of driver input end of bus level switching device MAX487; A signal output terminal ground connection of light isolation device TLP181, another signal output terminal connects respectively receiver output enable terminal RE and the driver output enable terminal DE of bus level switching device MAX487; Bus level switching device MAX487 is connected with the output connector of RS485 communication plug plate by 4 lead-out terminals.Power end (pin 8) connects output connector pin 3, and earth terminal (pin 5) connects output connector pin 4; The receiver input terminal A of bus level switching device MAX487 connects output connector receiver input terminal A through thermistor PTC1; The sub-B of receiver inverse output terminal connects the sub-B of output connector receiver reverse input end through thermistor PTC2.
Fig. 6 is the utility model CAN communication plug plate circuit diagram.U1 is magnetic isolating device ADUM1201, is responsible for the CAN transmitting-receiving level conversion of J1 input to become isolation level, and U2 is CAN bus level switching device, is responsible for that CAN is received and dispatched to isolation level and converts CAN bus differential level to.PTC1 and PTC2 are thermistors, current protection resettable fuse, and R5 is that the bus termination resistance of 120 ohm is used for matching bus resistance, prevents bus reflections.S1 is short circuit wire jumper plug-in unit, with determining whether enabling terminal resistance.D3, D4 are semiconductor solid discharging tube, for surge and the electrostatic protection etc. of communication bus.
As shown in Figure 6, the power end of the input plug connector of CAN communication plug plate and earth terminal are connected respectively power end and the earth terminal of magnetic isolating device ADUM1201; Input plug connector is by the corresponding signal transmitting and receiving pin 2,3 that connects isolating device ADUM1201 of receiving and transmitting signal pin 6,7; The sub-T(of signal receiving end that TX signal is sent to level conversion device SN65HVD251 by isolating device ADUM1201 signal transmitting and receiving pin 6 is pin 1), the sub-R(of signal receiving end that RX signal is sent to level conversion device SN65HVD251 by isolating device ADUM1201 signal transmitting and receiving pin 7 is pin 4), after converting CAN bus differential level to, pass through signal output terminal (pin 7 and pin 6), via thermistor PTC1 and PTC2, be sent to the signal receiving end (pin 1 and pin 2) of the output connector of CAN communication plug plate.
Fig. 7 is the process flow diagram of the master control borad of the present invention communication plug plate communication type that identification is pegged graft automatically, and concrete identifying is as follows:
Step S0, carries out the initialization of program, comprises clock initialization, the configuration of IO mouth, serial ports configuration, CAN configuration etc.
Step S1, the communicating circuit in master control board reads the level state of multiple IO ports of digital 1 correspondence, and becomes binary data to preserve by the good principle combinations of predefined state.
Step S2, judges this binary data, and the data of the representative RS485 communication type good with predefined are identical, in this way, enter step S4; As no, enter step S3.
Step S3, judges this binary data, and the data of the representative CAN communication type good with predefined are identical, in this way, enter step S5; As no, enter step S6.
Step S4, drives USART1 to receive or sends communication data signal, and entering step S6.
Step S5, drives CAN1 to receive or sends communication data signal, and entering rapid S6.
Step S6, reads numeral and reads the level state of multiple IO ports of 2 correspondences, and become binary data to preserve by the good principle combinations of predefined state.
Step S7, judges this binary data, and the data of the representative RS485 communication type good with predefined are identical, in this way, enter step S9; As no, enter step S8.
Step S8, judges this binary data, and the data of the representative CAN communication type good with predefined are identical, in this way, enter step S10; As no, return to step S1.
Step S9, drives USART2 to receive or sends communication data signal, and returning to step S1.
Step S10, drives CAN2 to receive or sends communication data signal, and being back into rapid S1.
The above the utility model embodiment is only that the one of present principles is simple and easy for example, can make those skilled in the art's comprehend the utility model, for the personnel of correlative technology field, under the prerequisite according to present principles, can improve out the circuit of the more communications protocol types of support to adapt to the communication need in more electric system, accomplish automatically to identify plug and play, be convenient to again install, cost is also economical cheap.But present embodiment limits the utility model never in any form, although this instructions and embodiment have been described in detail to the utility model, but, it will be appreciated by those skilled in the art that still and can modify or be equal to replacement the utility model; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the utility model creation, it is all encompassed in the utility model and creates in the middle of the protection domain of patent.
Claims (9)
1. automatically identify the master control borad of plug-in card communication type for one kind, it is characterized in that, comprise communication board input plug connector, communication board output connector, communication receiving/transmission and control circuit, communication output control circuit, microprocessor unit and physical communication output interface, described communication board input plug connector and the communication board output connector communication plug plate that is used for pegging graft, described microprocessor unit is by communication receiving/transmission and control circuit connecting communication plate input plug connector, and communication board output connector connects physical communication output interface by communication output control circuit; Described communication plug buttress arranges the numeral output of self according to the communication output type of itself, described microprocessor unit identifies the communication type of the communication plug plate of grafting according to self numeral output of communication plug plate setting, export corresponding communication type receiving and transmitting signal, described communication type receiving and transmitting signal is restored on the physical communication output interface of master control borad by described communication plug plate again.
2. the master control borad of automatic identification plug-in card communication type according to claim 1, described communication board input plug connector and communication board output connector comprise the first input plug connector and the first output connector, the second input plug connector and the second output connector, described physical communication output interface comprises the first physical communication output interface and the second physical communication output interface, described the first input plug connector connects microprocessor unit by the first communication receiving/transmission and control circuit, the first output connector connects the first physical communication output interface by the first communication output control circuit, described the second input plug connector connects microprocessor unit by the second communication receiving/transmission and control circuit, the second output connector connects the second physical communication output interface by the second communication output control circuit.
3. the master control borad of automatic identification plug-in card communication type according to claim 2, described the first input plug connector and the first output connector are RS485 or CAN communication board input plug connector and RS485 or CAN communication board output connector, and described the second input plug connector and the second output connector are RS485 or CAN communication board input plug connector and RS485 or CAN communication board output connector.
4. the master control borad of automatic identification plug-in card communication type according to claim 3, described the first input plug connector and the second input plug connector at least comprise respectively 9 pins, wherein, 2 pins are USART receiving and transmitting signal pin, 2 pins are CAN receiving and transmitting signal pin, 1 pin is USART or CAN control signal pin, and 2 pins are that numeric type reads pin, and 2 pins are communication plug plate input power pin; Described the first output connector and the second output connector at least comprise respectively 4 pins, and wherein, 2 pins are bus-out signal pin, and 2 pins are communication plug plate insulating power supply output pin.
5. the master control borad of automatic identification plug-in card communication type according to claim 4, described the first communication receiving/transmission and control circuit and the second communication receiving/transmission and control circuit comprise respectively 2 and read pin connecting line and 2 USART signal transmitting and receiving pin connecting lines, 2 CAN signal transmitting and receiving pin connecting lines and 1 USART/CAN control signal pin connecting line for reading the numeric type of the communication plug plate communication type being plugged on described main control board; Described microprocessor unit reads pin connecting line, 2 USART signal transmitting and receiving pin connecting lines, 2 CAN signal transmitting and receiving pin connecting lines by 2 numerals respectively and is connected described the first input plug connector and the second input plug connector with 1 USART/CAN control signal pin connecting line; Described the first communication output control circuit and the second communication output control circuit comprise respectively 1 485A/CANH output signal lead-foot-line and 1 485B/CAN output signal lead-foot-line, and described the first output connector is connected respectively described the first physical communication output interface and the second physical communication output interface with the second output connector with 485B/CAN output signal lead-foot-line by described 485A/CANH output signal lead-foot-line.
6. the master control borad of automatic identification plug-in card communication type according to claim 2, the input power pin of described the first input plug connector and the second input plug connector is connected respectively the out-put supply pin of described the first output connector and the second output connector by isolation power supply module; Described isolation power supply module also connects 220V power supply.
7. a communication plug plate, is characterized in that, comprise respectively and the input plug connector of master control borad, input inserting terminal, the output inserting terminal that output connector matches, and communication type digital output circuit, buffer circuit and communication type change-over circuit; Described communication type digital output circuit connects input plug terminal, offer master control borad for the numeral output that self is set according to the communication type of itself, described input plug terminal is connected output inserting terminal successively with communication type change-over circuit by buffer circuit, receive the corresponding communication type receiving and transmitting signal of master control borad microprocessor output, return to the physical communication output interface of master control borad.
8. communication plug plate according to claim 7, it is characterized in that, described communication plug plate comprises RS485 communication plug plate, digital isolator ADUM1201 and level shifting circuit, the power end of the input plug connector of described RS485 communication plug plate and earth terminal are connected respectively power end and the earth terminal of magnetic isolating device ADUM1201, and described input plug connector is by the corresponding signal transmitting and receiving pin that connects isolating device ADUM1201 of receiving and transmitting signal pin; Described input plug connector control signal pin connects the signal input part of light isolation device TLP181, i.e. phototriode output terminal; The receiver lead-out terminal RO of the TXD signal output part sub-connection bus level switching device MAX487 of described isolating device ADUM1201, the sub-DI of driver input end of RXD signal output part sub-connection bus level switching device MAX487; A signal output terminal ground connection of described light isolation device TLP181, another signal output terminal connects respectively receiver output enable terminal RE and the driver output enable terminal DE of bus level switching device MAX487; Bus level switching device MAX487 is connected with the output connector of RS485 communication plug plate by 4 lead-out terminals; Wherein power end connects output connector pin 3, and earth terminal connects output connector pin 4; The receiver input terminal A of bus level switching device MAX487 connects output connector receiver input terminal A through thermistor PTC1; The sub-B of receiver inverse output terminal connects the sub-B of output connector receiver reverse input end through thermistor PTC2.
9. communication plug plate according to claim 7, it is characterized in that, described communication plug plate comprises CAN communication plug plate, digital isolator ADUM1201 and level shifting circuit, described communication plug plate comprises CAN communication plug plate, digital isolator ADUM1201 and level shifting circuit, the power end of the input plug connector of described CAN communication plug plate and earth terminal are connected respectively power end and the earth terminal of magnetic isolating device ADUM1201; Described input plug connector is by the corresponding signal transmitting and receiving pin that connects isolating device ADUM1201 of receiving and transmitting signal pin; Described isolating device ADUM1201 signal transmitting and receiving pin is sent to TX signal the T of signal receiving end of level conversion device SN65HVD251, described isolating device ADUM1201 signal transmitting and receiving pin is sent to RX signal the R of signal receiving end of level conversion device SN65HVD251, after converting CAN bus differential level to, pass through signal output terminal, via thermistor PTC1 and PTC2, be sent to the signal receiving end of the output connector of CAN communication plug plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889368.9U CN203705865U (en) | 2013-12-30 | 2013-12-30 | Communication plug-in member plate and main control board capable of automatically identifying plug-in member plate communication type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889368.9U CN203705865U (en) | 2013-12-30 | 2013-12-30 | Communication plug-in member plate and main control board capable of automatically identifying plug-in member plate communication type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705865U true CN203705865U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320889368.9U Expired - Lifetime CN203705865U (en) | 2013-12-30 | 2013-12-30 | Communication plug-in member plate and main control board capable of automatically identifying plug-in member plate communication type |
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| Country | Link |
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| CN (1) | CN203705865U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748724A (en) * | 2017-09-01 | 2018-03-02 | 珠海格力电器股份有限公司 | A kind of communication interface expanding device, controller and its communication interface expanding method |
| CN111835378A (en) * | 2020-06-08 | 2020-10-27 | 珠海格力电器股份有限公司 | Communication type switching circuit and method and air conditioning equipment |
| CN114609949A (en) * | 2022-03-23 | 2022-06-10 | 浙江亚太机电股份有限公司 | Electrostatic isolation CAN interface data transmission board |
-
2013
- 2013-12-30 CN CN201320889368.9U patent/CN203705865U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748724A (en) * | 2017-09-01 | 2018-03-02 | 珠海格力电器股份有限公司 | A kind of communication interface expanding device, controller and its communication interface expanding method |
| CN107748724B (en) * | 2017-09-01 | 2023-08-29 | 珠海格力电器股份有限公司 | Communication interface expanding device, controller and communication interface expanding method thereof |
| CN111835378A (en) * | 2020-06-08 | 2020-10-27 | 珠海格力电器股份有限公司 | Communication type switching circuit and method and air conditioning equipment |
| CN111835378B (en) * | 2020-06-08 | 2024-03-08 | 珠海格力电器股份有限公司 | Communication type switching circuit and method and air conditioning equipment |
| CN114609949A (en) * | 2022-03-23 | 2022-06-10 | 浙江亚太机电股份有限公司 | Electrostatic isolation CAN interface data transmission board |
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