CN103163861A - Current-type bus - Google Patents
Current-type bus Download PDFInfo
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- CN103163861A CN103163861A CN2013100371581A CN201310037158A CN103163861A CN 103163861 A CN103163861 A CN 103163861A CN 2013100371581 A CN2013100371581 A CN 2013100371581A CN 201310037158 A CN201310037158 A CN 201310037158A CN 103163861 A CN103163861 A CN 103163861A
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- output
- current
- output interface
- interface
- logic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a current-type bus. The current-type bus comprises an output interface and an input interface. The output interface comprises a high-speed isolator, a logic 0-time galvanostat and a logic 1-time galvanostat, wherein the high-speed isolator is used for isolating the output interface and equipment, the logic 0-time galvanostat is used for outputting constant current at an end A of the output interface at output logic 0 time, and the logic 1-time galvanostat does not output current at the end A of the output interface at output logic 1 time. The input interface comprises a low-noise current amplifier and a shaping isolation output device, wherein the low-noise current amplifier is used for amplifying input, and the shaping isolation output device is used for isolation output. An end port B of the output interface is connected with an end port B of the input interface.
Description
Technical field
The present invention relates to the bussing technique field, relate in particular to a kind of current mode bus.
Background technology
The existing minimum hundreds of root of numerically-controlled machine wiring.
The E-CAN bus is a kind of communication bus of high-speed local area network communication aspect.Have certain antijamming capability, wiring is very simple, and data rate is fast, but its antijamming capability does not reach the environmental requirement of lathe strong noise, hope can have a kind of bus, and communication speed can be more slightly lower than E-CAN, but to noise, very strong immunocompetence will be arranged.
Summary of the invention
The present invention avoids the weak point that exists in above-mentioned prior art, and the current mode bus is provided.
The present invention be the technical solution problem by the following technical solutions, a kind of current mode bus, comprise output interface and input interface, short-circuiting device when galvanostat and logical one when described output interface comprises high-speed isolated device, logical zero, described high-speed isolated device is used for and will isolates between output interface and equipment, when during logical zero, galvanostat is used for output logic 0, at the A of output interface end output steady current, during logical one, short-circuiting device is exported at output interface A end no current when output logic 1; Described input interface comprises low-noise current amplifier and shaping isolation follower, and described low-noise current amplifier is used for input signal is amplified, and shaping isolation follower is used for isolation output; The B port of described output interface and the B port of input interface are connected.
Further, as a kind of preferred, described high-speed isolated device is made of photodiode.
Further, as a kind of preferred, described shaping isolation follower is composed in series by amplifier and photoisolator.
Further, as a kind of preferred, described low-noise current amplifier is comprised of the AD620 amplifier.
Compared with the prior art, beneficial effect of the present invention is embodied in: noise resisting ability is strong.In case certain node disconnects, all shut down.Security is good.
Description of drawings
Fig. 1 is the total line frame graph of embodiment of the present invention current mode.
Fig. 2 is embodiment of the present invention current mode bus output interface block diagram.
Fig. 3 is embodiment of the present invention current mode bus input interface block diagram.
Fig. 4 is embodiment of the present invention current mode bus system block diagram.
Below pass through embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment
As Figure 1-3, a kind of current mode bus, comprise output interface 1 and input interface 2, short-circuiting device 13 when galvanostat 12 and logical one when described output interface 1 comprises high-speed isolated device 11, logical zero, described high-speed isolated device 11 is used for isolation between output interface 1 and equipment 3, when during logical zero, galvanostat 12 is used for output logic 0, at the A of output interface end output steady current, during logical one, short-circuiting device 13 is exported at output interface A end no current when output logic 1; Described input interface 2 comprises low-noise current amplifier 21 and shaping isolation follower 22, and described low-noise current amplifier 21 is used for input signal is amplified, and shaping isolation follower 22 is used for isolation output; The B port of described output interface 1 is connected with the B port of input interface 2.
The E-CAN bus is the voltage-type bus, on its basis, the invention discloses current mode I-CAN bus physical layer.Bitcom is identical with existing E-CAN, can realize high-speed transfer, actual test 300Kbps is without error code, under high noise circumstance, 2 maskless twisted-pair feeders just can be realized the undistorted transmission of data, whole numerically-controlled machine all devices is connected, greatly simplify numerically-controlled machine design and wiring, and the minimum hundreds of root of traditional numerically-controlled machine wiring.In theory, the present invention can realize 100 equipment linked network simultaneously.System of the present invention connects as shown in Figure 4.
During logical zero, send the 20mA electric current from the O end, during logical one, do not send electric current, output presents short-circuit condition.Transmit and receive and be the current-series mode, so, be when in loop, electric current being arranged " 0 ", be when there is no electric current " 1 ".
By above-mentioned description, the related personnel can under the condition of mentality of designing of the present invention and technical indicator appointment, change and revise.Technical scope of the present invention is not limited to the content on instructions, must determine technical scope according to the claim scope.
Claims (4)
1. current mode bus, it is characterized in that: comprise output interface and input interface, short-circuiting device when galvanostat and logical one when described output interface comprises high-speed isolated device, logical zero, described high-speed isolated device is used for and will isolates between output interface and equipment, when during logical zero, galvanostat is used for output logic 0, at the A of output interface end output steady current, during logical one, short-circuiting device is exported at output interface A end no current when output logic 1; Described input interface comprises low-noise current amplifier and shaping isolation follower, and described low-noise current amplifier is used for input signal is amplified, and shaping isolation follower is used for isolation output; The B port of described output interface and the B port of input interface are connected.
2. current mode bus as claimed in claim 1, it is characterized in that: described high-speed isolated device is made of photodiode.
3. current mode bus as claimed in claim 1, it is characterized in that: described shaping isolation follower is composed in series by amplifier and photoisolator.
4. current mode bus as claimed in claim 1, it is characterized in that: described low-noise current amplifier is comprised of the AD620 amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100371581A CN103163861A (en) | 2013-01-31 | 2013-01-31 | Current-type bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100371581A CN103163861A (en) | 2013-01-31 | 2013-01-31 | Current-type bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103163861A true CN103163861A (en) | 2013-06-19 |
Family
ID=48587035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100371581A Pending CN103163861A (en) | 2013-01-31 | 2013-01-31 | Current-type bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103163861A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484307A (en) * | 1990-07-27 | 1992-03-17 | Fuji Electric Co Ltd | System for managing controller group |
| CN2798415Y (en) * | 2005-04-11 | 2006-07-19 | 于广沅 | Active simulated signal insulating amplifier |
| US20060250175A1 (en) * | 2004-10-30 | 2006-11-09 | Phoenix Contact Gmbh & Co. Kg | Circuit arrangement with a short-circuit protective circuit |
| CN101421765A (en) * | 2006-02-27 | 2009-04-29 | 菲尼克斯电气公司 | Bidirectional, dc-isolated transmission channel |
| CN102739234A (en) * | 2012-06-15 | 2012-10-17 | 华中科技大学 | Multi-channel digital signal input/output isolating box and power control system |
-
2013
- 2013-01-31 CN CN2013100371581A patent/CN103163861A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484307A (en) * | 1990-07-27 | 1992-03-17 | Fuji Electric Co Ltd | System for managing controller group |
| US20060250175A1 (en) * | 2004-10-30 | 2006-11-09 | Phoenix Contact Gmbh & Co. Kg | Circuit arrangement with a short-circuit protective circuit |
| CN2798415Y (en) * | 2005-04-11 | 2006-07-19 | 于广沅 | Active simulated signal insulating amplifier |
| CN101421765A (en) * | 2006-02-27 | 2009-04-29 | 菲尼克斯电气公司 | Bidirectional, dc-isolated transmission channel |
| CN102739234A (en) * | 2012-06-15 | 2012-10-17 | 华中科技大学 | Multi-channel digital signal input/output isolating box and power control system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |