CN105589824A - Multi-configuration manner USB/RS232-CAN converting and debugging device - Google Patents
Multi-configuration manner USB/RS232-CAN converting and debugging device Download PDFInfo
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- CN105589824A CN105589824A CN201410571610.7A CN201410571610A CN105589824A CN 105589824 A CN105589824 A CN 105589824A CN 201410571610 A CN201410571610 A CN 201410571610A CN 105589824 A CN105589824 A CN 105589824A
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Abstract
The invention belongs to the technical field of CAN buses, particularly relates to a multi-configuration manner USB/RS232-CAN converting and debugging device, and aims at solving the problem that the prior art cannot satisfy the demands of secondary development, satisfy the updating of the traditional industrial systems and satisfy the demand of rapidly building a CAN bus monitoring network at the same time. The multi-configuration manner USB/RS232-CAN converting and debugging device is characterized by comprising a CAN bus interface module, a USB interface module, an RS232 interface module and a control module, wherein one end of the CAN bus interface module is connected with the control module; one end of the USB interface module is connected with the control module; and one end of the RS232 interface module is connected with the control module. According to the multi-configuration manner USB/RS232-CAN converting and debugging device, the diversity of the configurations is realized, and corresponding drive programs can be compiled according to the actual requirements, so that the demands, for the secondary development, of the user are satisfied. The control module is used for realizing a complete hardware configuration scheme through a dial switch and the like, so that the rapid building of the CAN bus monitoring network is realized, and a large number of cost is saved for the updating of old systems.
Description
Technical field
The invention belongs to CAN bussing technique field, be specifically related to a kind of various configurations mode of blockingUSB/RS232-CAN translation debugging device.
Background technology
CAN bus as a kind of field bus control system have simple in structure, stability is high, anti-Interference performance is strong, autgmentability and open good and with low cost etc. a little, extensively exist nowThe fields such as automotive field, aerospace system, satellite industry and Industry Control are used. And general serial is totalLine (USB) is that current computer peripheral equipment connects the bus generally using, it is high with transfer rate,Connect simple, be easy to the advantages such as the small and exquisite and plug and play of expansion, interface standard, progressively develop into meterThe standard scheme that calculation machine and peripheral hardware are interconnected. And the adaptation of USB-CAN bus on the market at presentDevice is also seen everywhere.
But often on market, existing converter is the hardware and software having had cured, and leaves forIt is little that user carries out the interface of secondary development. Like this, in the time that user wants to carry out secondary development,The equipment suitable with regard to neither one meets the demands. In addition, based on the mature technology of CAN bus,The use of CAN bus is quite extensive, in the time legacy system being carried out to intelligently upgrading,The node interface of CAN bus is proposed again to new problem: expensive all quilts of equipmentReplace, if but retain existing equipment, no matter be digital instrument, sensor device or industryControl computer, RS232 is conventional serial line interface, and it is total that these equipment instrument do not have CANLine interface, so just makes system upgrade transformation run into bottleneck. At present, still there is no need to expireFoot secondary development needs, can meet and carry out traditional industry system upgrade, fast assembling CAN againThe adapter of monitoring bus network demand.
Summary of the invention
The object of the invention is to solve prior art and cannot meet the need that can meet secondary developmentTo, can meet and carry out traditional industry system upgrade, fast assembling CAN monitoring bus network need againThe problem of asking, provides the USB/RS232-CAN translation debugging device of one kind of multiple configuration modes.
The present invention is achieved in that
The USB/RS232-CAN translation debugging device of one kind of multiple configuration modes, is characterized in that:Comprise CAN bus interface module, usb interface module, RS232 interface module and control module;Wherein, CAN bus interface module one end is connected with control module, and CAN bus interface module connectsReceive the CAN bus data from control module, CAN bus data is sent to CAN totalThe device that the line interface module other end connects; CAN bus interface module is also by the CAN receivingBus data sends to control module; One end of usb interface module is connected with control module, USBInterface module is communicated by letter for host computer and this translation debugging device, usb interface module reception fromThe usb data of control module, and usb data is sent to and another of usb interface moduleThe device that end is connected; Usb interface module also sends to control mould by the usb data receivingPiece; One end of RS232 interface module is connected with control module, RS232 interface module receive fromThe RS232 data of control module, by RS232 data send to RS232 interface module anotherThe device that end connects; RS232 interface module also sends to control by the RS232 data that receiveModule; Control module receives the data from above-mentioned three modules, according to peripheral operation input, rightThe data acquisition receiving carries out Data Format Transform by prior art, then sends the data toCAN bus interface module, usb interface module or RS232 interface module.
CAN bus interface module as above comprises the first isolating chip, CAN bus driverDevice and CAN EBI; Wherein, one end of the first isolating chip is connected with control module, anotherOne end is connected with one end of CAN bus driver, realizes electrical isolation function, the first isolated coreSheet receives the CAN bus data from CAN bus driver, and this CAN bus data is sent outGive control module, the CAN the bus data also control module receiving being sent is transmitted toCAN bus driver; One end of the other end of CAN bus driver and CAN EBIConnect, the data that CAN bus driver transmits CAN EBI are carried out level conversion, soAfter data after treatment are sent to the first isolating chip, and by receive from the first isolated coreThe CAN data retransmission of sheet is to CAN EBI.
The other end of CAN EBI as above connects other CAN bus apparatus, CANEBI receives the CAN bus data that other CAN bus apparatus send, and by these dataSend to CAN bus driver, also by the CAN from CAN bus driver receivingBus data sends to other CAN bus apparatus of connection; The first described isolating chip adoptsADuM1201 realizes, and CAN bus driver adopts TJA1040T to realize, and CAN bus connectsMouth adopts the connector that conventional lead pin pitch is 2.54mm to realize.
Usb interface module as above comprise usb protocol circuit, the second isolating chip andUSB interface; Wherein, one end of the second isolating chip is connected with control module, the other end and USBOne end of protocol circuit connects, and the second isolating chip is used for realizing electrical isolation, the second isolating chipReceive the usb data from usb protocol circuit, this usb data sent to control module,The usb data also control module receiving being sent is transmitted to usb protocol circuit; USBThe other end of protocol circuit is connected with one end of USB interface, and this usb protocol circuit is by be sentData format processing, then data after treatment are sent to the second isolating chip, andBy the CAN data retransmission from the second isolating chip receiving to USB interface.
The other end of USB interface as above connects other USB devices, and USB interface connectsReceive the usb data that other USB devices send, and these data sent to usb protocol circuit,Also the usb data from usb protocol circuit receiving is sent to other USB of connectionEquipment; Described usb protocol circuit is realized by CP2102 and NUP2202, the second isolationChip adopts ADuM1201 to realize, and USB interface adopts the USB connector of standard to realize.
RS232 interface module as above comprises RS232 drive circuit, the 3rd isolating chipWith RS232 interface; Wherein, one end of the 3rd isolating chip is connected with control module, the other endBe connected with one end of RS232 drive circuit, the 3rd isolating chip is used for realizing electrical isolation, connectsReceive the RS232 data from RS232 drive circuit, these RS232 data are sent to control mouldPiece, the RS232 the data retransmission also control module receiving being sent is to RS232 drive circuit;The other end of RS232 drive circuit is connected with one end of RS232 interface, RS232 drive circuitThe level format of information to be sent is changed, then data after treatment are sent to the 3rdIsolating chip, and by the CAN data retransmission from the 3rd isolating chip receiving to RS232Interface.
The other end of RS232 interface as above connects other RS232 equipment, receives otherThe RS232 data that RS232 equipment sends, and these data are sent to RS232 drive circuit,Also the RS232 data from RS232 drive circuit that receive are sent to other of connectionRS232 equipment; RS232 drive circuit is realized by MAX3232, and the 3rd isolating chip adoptsADuM1201 realizes, and RS232 interface adopts general DB9 connector to realize.
Control module as above comprises toggle switch and single-chip microcomputer; Wherein, toggle switch is defeatedGo out end and be connected with single-chip microcomputer, single-chip microcomputer also respectively with the first isolated core of CAN bus interface moduleThe 3rd isolated core in the second isolating chip, the RS232 interface module of sheet, usb interface moduleSheet connects.
Toggle switch as above adopts the toggle switch of 8, and wherein, first for selectingControl mode, in the time need to carrying out arranging of CAN bus parameter by host computer, makes this switchTo the state of ON; In the time that the parameter of CAN bus need to be configured by local toggle switch,This switch is got to the state of OFF; Second is the selection of translation interface, when this dial-upWhen switch is got to the state of ON, what this converter was realized is the phase of CAN bus and usb busTranslation function mutually, on the contrary what realize is the mutual translation function of CAN bus and RS232;Remaining 6 is CAN bus configuration position, in the time that first of toggle switch is OFF state,Control by these 6 this locality of realizing CAN bus parameter.
Single-chip microcomputer as above adopts STM32 series monolithic to realize.
Beneficial effect of the present invention is:
The present invention adopts CAN bus interface module, usb interface module, RS232 interface moduleAnd control module, realize the various of USB/RS232-CAN bus translation debugging device configuration modeProperty, can write according to actual needs corresponding driver, meet the need of user's secondary developmentAsk. Control module realizes complete hardware configuration scheme by toggle switch etc., has realized CANThe fast assembling of monitoring bus network, simultaneously also for a large amount of one-tenth has been saved in the upgrading of old systemThis.
Brief description of the drawings
Accompanying drawing 1 is that the USB/RS232-CAN conversion of one kind of multiple configuration modes of the present invention is adjustedThe structural representation of examination device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments to one kind of multiple configuration modes of the present inventionUSB/RS232-CAN translation debugging device is described:
The USB/RS232-CAN translation debugging device of one kind of multiple configuration modes, comprises CANBus interface module, usb interface module, RS232 interface module and control module. Wherein,CAN bus interface module one end is connected with control module, and it receives the CAN from control moduleBus data, sends to CAN bus data with the CAN bus interface module other end and is connectedDevice; It also sends to control module by the CAN bus data receiving. USB interface mouldOne end of piece is connected with control module, and it is communicated by letter for host computer and this translation debugging device, and it connectsReceive the usb data from control module, and usb data is sent to and usb interface moduleThe device that is connected of the other end; It also sends to control module by the usb data receiving.One end of RS232 interface module is connected with control module, and it receives the RS232 from control moduleData, send to RS232 data in the device being connected with the RS232 interface module other end; ItAlso the RS232 data that receive are sent to control module. Control module receives from above-mentioned threeThe data of individual module, according to peripheral operation input, are undertaken by prior art the data acquisition receivingData Format Transform, then sends the data to CAN bus interface module, usb interface moduleOr RS232 interface module.
In the present embodiment, as shown in Figure 1, CAN bus interface module comprises the first isolated coreSheet, CAN bus driver and CAN EBI. Wherein, one end of the first isolating chip withControl module connects, and the other end is connected with one end of CAN bus driver, realizes electrical isolationFunction, prevents from damaging local single-chip microcomputer because the signal in CAN bus disturbs, and it receivesFrom the CAN of CAN bus driver bus data, this CAN bus data is sent to controlModule, the CAN the bus data also control module receiving being sent is transmitted to CAN busDriver.
The other end of CAN bus driver is connected with one end of CAN EBI, and it is by CANThe data that EBI transmits are carried out level conversion, and the level signal of driver output is converted to markAccurate CAN bus level, then sends to the first isolating chip by data after treatment, and willThe CAN data retransmission from the first isolating chip receiving is to CAN EBI. CANThe other end of EBI connects other CAN bus apparatus according to actual needs, and it receives otherThe CAN bus data that CAN bus apparatus sends, and send to CAN bus to drive these dataMoving device, also sends to the CAN bus data from CAN bus driver receiving and connectsOther CAN bus apparatus that connect. The first isolating chip can adopt ADuM1201 to realize, CANBus driver can adopt TJA1040T to realize, and CAN EBI can adopt conventional pinSpacing is that the connector of 2.54mm is realized.
Usb interface module comprises usb protocol circuit, the second isolating chip and USB interface.Wherein, one end of the second isolating chip is connected with control module, the other end and usb protocol circuitOne end connect, the second isolating chip is used for realizing electrical isolation, prevents on USB transmitting-receiving lineAbnormal disturbances is damaged local single-chip microcomputer, and it receives the usb data from usb protocol circuit,This usb data is sent to control module, the USB the number also control module receiving being sentAccording to being transmitted to usb protocol circuit. The other end of usb protocol circuit and one end of USB interfaceConnect, data to be sent are formatd processing by this usb protocol circuit, become symbolThe form of the Frame of the usb protocol of standardization, then sends to second by data after treatmentIsolating chip, and by the CAN data retransmission from the second isolating chip receiving to USBInterface. The other end of USB interface connects other USB devices according to actual needs, and it receives itThe usb data that his USB device sends, and these data are sent to usb protocol circuit, alsoSend to other USB of connection to establish the usb data from usb protocol circuit receivingStandby. Usb protocol circuit can be by CP2102 and NUP2202 based on existing techniques in realizing, andTwo isolating chips adopt ADuM1201 to realize, and USB interface adopts the USB connector of standard realExisting. Usb interface module had both adopted the driver of existing maturation, and this USB interface is reflectedThe RS232 serial ports of penetrating into host computer uses, and also adopts and writes voluntarily according to actual needsUSB driver, can meet the demand of secondary development like this.
RS232 interface module comprises that RS232 drive circuit, the 3rd isolating chip and RS232 connectMouthful. Wherein, one end of the 3rd isolating chip is connected with control module, and the other end and RS232 driveOne end of moving circuit connects, and the 3rd isolating chip is used for realizing electrical isolation, prevents that RS232 from receivingAbnormal disturbances on hair line is damaged local single-chip microcomputer, and its receives from RS232 drive circuitRS232 data, send to control module by these RS232 data, also by the control mould receivingThe RS232 data retransmission that piece sends is to RS232 drive circuit. Another of RS232 drive circuitEnd is connected with one end of RS232 interface, and RS232 drive circuit is by the level of information to be sentForm is changed, and is transformed into the RS232 level format of standard, then by data after treatmentSend to the 3rd isolating chip, and the CAN data from the 3rd isolating chip that receive are turnedIssue RS232 interface. The other end of RS232 interface connects other RS232 according to actual needsEquipment, it receives the RS232 data that other RS232 equipment send, and these data are sent toRS232 drive circuit, also sends out the RS232 data from RS232 drive circuit that receiveGive other RS232 equipment of connection. RS232 drive circuit can be realized by MAX3232, theThree isolating chips adopt ADuM1201 to realize, and RS232 interface adopts general DB9 connectorRealize. RS232 interface module is connected with equipment or the instrument of RS232 interface, can set up rapidlyIndustrial detection network based on CAN bus, realizes remote detection and the control of equipment, also canCarry out the secondary development of program by RS232 mouth.
Control module comprises toggle switch and single-chip microcomputer. Wherein, the output of toggle switch and monolithicMachine connects, and single-chip microcomputer also connects with the first isolating chip, the USB of CAN bus interface module respectivelyThe 3rd isolating chip in the second isolating chip, the RS232 interface module of mouth module connects. Dial-upSwitch adopts the toggle switch of 8, and wherein, first for selecting control mode, when needs byWhen host computer carries out arranging of CAN bus parameter, this switch is got to the state of ON; Work as CANWhen the parameter of bus need to be configured by local toggle switch, this switch is got to OFF'sState. Second is the selection of translation interface, in the time that this toggle switch is got to the state of ON,What this converter was realized is the mutual translation function of CAN bus and usb bus, otherwise,What realize is the mutual translation function of CAN bus and RS232. Remaining 6 is that CAN is totalLine configuration bit, in the time that first of toggle switch is OFF state, can realize CAN by these 6This locality of bus parameter is controlled, as baud rate, frame format etc. Single-chip microcomputer adopts STM32 seriesChip microcontroller.
The present invention adopts CAN bus interface module, usb interface module, RS232 interface moduleAnd control module, realize the various of USB/RS232-CAN bus translation debugging device configuration modeProperty, can write according to actual needs corresponding driver, meet the need of user's secondary developmentAsk. Control module realizes complete hardware configuration scheme by toggle switch etc., has realized CANThe fast assembling of monitoring bus network, simultaneously also for a large amount of one-tenth has been saved in the upgrading of old systemThis.
Claims (9)
1. the USB/RS232-CAN translation debugging device of one kind of multiple configuration modes, is characterized in that: compriseCAN bus interface module, usb interface module, RS232 interface module and control module; Wherein, CANBus interface module one end is connected with control module, and one end of usb interface module is connected with control module,One end of RS232 interface module is connected with control module.
2. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 1Device, is characterized in that: described CAN bus interface module comprises the first isolating chip, CAN busDriver and CAN EBI; Wherein, one end of the first isolating chip is connected with control module, anotherEnd is connected with one end of CAN bus driver; The other end of CAN bus driver and CAN bus connectOne end of mouth connects.
3. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 2Device, is characterized in that: the other end of described CAN EBI connects other CAN bus apparatus;The first described isolating chip adopts ADuM1201 to realize, and CAN bus driver adopts TJA1040TRealize, it is the connector realization of 2.54mm that CAN EBI adopts conventional lead pin pitch.
4. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 1Device, is characterized in that: described usb interface module comprises usb protocol circuit, the second isolating chipAnd USB interface; Wherein, one end of the second isolating chip is connected with control module, the other end and USBOne end of protocol circuit connects; The other end of usb protocol circuit is connected with one end of USB interface.
5. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 4Device, is characterized in that: the other end of described USB interface connects other USB devices, described USBProtocol circuit realizes by CP2102 and NUP2202, and the second isolating chip adopts ADuM1201 to realize,USB interface adopts the USB connector of standard to realize.
6. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 1Device, is characterized in that: described RS232 interface module comprises RS232 drive circuit, the 3rd isolated coreSheet and RS232 interface; Wherein, one end of the 3rd isolating chip is connected with control module, the other end withOne end of RS232 drive circuit connects; One end of the other end of RS232 drive circuit and RS232 interfaceConnect.
7. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 6Device, is characterized in that: the other end of described RS232 interface connects other RS232 equipment, RS232Drive circuit is realized by MAX3232, and the 3rd isolating chip adopts ADuM1201 to realize, and RS232 connectsMouth adopts general DB9 connector to realize.
8. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 1Device, is characterized in that: described control module comprises toggle switch and single-chip microcomputer; Wherein, toggle switchOutput be connected with single-chip microcomputer, single-chip microcomputer also respectively with the first isolated core of CAN bus interface moduleThe 3rd isolating chip in the second isolating chip, the RS232 interface module of sheet, usb interface module connects.
9. the USB/RS232-CAN translation debugging of one kind of multiple configuration modes according to claim 8Device, is characterized in that: described single-chip microcomputer adopts STM32 series monolithic to realize.
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Cited By (2)
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Application publication date: 20160518 |