CN204790398U - Ground isolated system based on big current output drive circuit of motion control card multichannel - Google Patents
Ground isolated system based on big current output drive circuit of motion control card multichannel Download PDFInfo
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- CN204790398U CN204790398U CN201520608510.7U CN201520608510U CN204790398U CN 204790398 U CN204790398 U CN 204790398U CN 201520608510 U CN201520608510 U CN 201520608510U CN 204790398 U CN204790398 U CN 204790398U
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Abstract
The utility model discloses a ground isolated system based on big current output drive circuit of motion control card multichannel, including the motion control card, the motion control card on be provided with outside ground, outsidely including first outside ground and the outside ground of second, first outside ground and second outsidely are kept apart each other, first outside ground does not comprise the big current output drive circuit's of multichannel ground, the outside ground of second does not comprise other control signal's ground, the big current output drive circuit's of outside multichannel the ground ground with outside other control signal is not kept apart in the adoption, makes heavy current on the big current output drive circuit's of outside multichannel the horizon power supply that directly flows back, avoids causing the interference to whole outside horizon.
Description
Technical field
The utility model relates to automatic control technology field, specifically, is the ground shielding system based on motion control card multichannel High-current output driving circuit and method.
Background technology
Current main flow motion control card adopts ground, inside and outside isolation scheme, and object is to protect inner primary control circuit not damage when external circuit damages; But get more and more for the equipment that current motion control calorie requirement drives, driving force is also increasing, so just may have very large electric current and flow through ground level, thus to ground level lifting, causes interference to other signal levels.
As shown in Figure 1, ground, the inside and outside isolation scheme of existing motion control card, motion control card is provided with a power interface, and internally with externally utilizing isolating device to isolate, the backflow of outside all signals is all finally get back to external switch power supply place by power interface; All external control signal ground levels are a monoblock, like this when multi-channel driver circuit (High-current output driving circuit) works, have very large electric current and flow through externally plane (ground level current direction schematic diagram as shown in Figure 1), like this can to the lifting of whole externally plane, the fluctuation of ground level also can cause interference to other external signal, thus affects the normal control of whole motion control card.
Utility model content
The purpose of this utility model is to provide the ground shielding system based on motion control card multichannel High-current output driving circuit, adopt and the ground of the ground of outside multichannel High-current output driving circuit with other control signals outside is kept apart, make the big current on the ground level of outside multichannel High-current output driving circuit directly be back to power supply, avoid causing interference to whole externally plane.
The utility model is achieved through the following technical solutions: based on the ground shielding system of motion control card multichannel High-current output driving circuit, comprise motion control card, described motion control card is provided with externally, describedly externally comprise first externally with the second externally, described first is externally externally isolated from each other with second, described first is externally made up of the ground of multichannel High-current output driving circuit, and described second is externally made up of the ground of other control signals.
For better realizing the utility model further, be provided with power interface, and the ground end of power interface is externally connected in described multichannel High-current output driving circuit region with first, described power interface connects with the external switch power supply of motion control card.
For better realizing the utility model further, described motion control card is also provided with internally, described internally by isolating device respectively with second externally and first externally to isolate.
Further to better implement the present invention, described isolating device adopts optocoupler.
Further, for better realizing the utility model, region, the ground place of other control signals described is provided with a power supply wiring port, and power supply wiring port is connected with external switch power supply.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model adopts and is kept apart on the ground of the ground of outside multichannel High-current output driving circuit with other control signals outside, make the big current on the ground level of outside multichannel High-current output driving circuit directly be back to power supply, avoid causing interference to whole externally plane.
(2) the utility model is equivalent to the ground of whole motion control card to divide into three mutually isolated ground: one internally, the ground of other control signals of outside, the ground of an outside multichannel High-current output driving circuit.
(3) cost that the utility model increases on the basis of existing motion control card almost can be ignored, and only increases a power interface (power supply terminal), but has high guarantee to the normal table work of whole motion control card.
Accompanying drawing explanation
Fig. 1 be the inside and outside of existing motion control card isolate schematic diagram.
Fig. 2 isolates schematic diagram of the present utility modelly.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
As shown in Figure 1, ground level is divided into internally by existing motion control card and externally two parts, and on motion control card, only establish a power interface to power to motion control card for being connected with external switch power supply, motion control card internally by multiple isolating device with externally isolate, the backflow of outside all signals is all finally get back to external switch power supply place by power interface, all external control signal ground levels are owing to being a monoblock, like this when multi-channel driver circuit (High-current output driving circuit) works, have very large electric current and flow through externally plane (ground level current direction schematic diagram as shown in Figure 1), like this can to the lifting of whole externally plane, the fluctuation of ground level also can cause interference to other external signal, thus affect the normal control of whole motion control card.
Embodiment 1:
Based on the ground shielding system of motion control card multichannel High-current output driving circuit, solve existing motion control card inside and outside ground isolation scheme in due to multichannel High-current output drive circuit works time, have very large electric current and flow through externally plane, like this can to the lifting of whole externally plane, the fluctuation of ground level also can cause interference to other external signal, thus affect the drawback of the normal control of whole motion control card, be arranged to following structure especially and solve this drawback, as shown in Figure 2, comprise motion control card, described motion control card is provided with externally, describedly externally comprise first externally with the second externally, described first is externally externally isolated from each other with second, described first is externally made up of the ground of multichannel High-current output driving circuit, described second is externally made up of the ground of other control signals.
The ground level at multichannel High-current output driving circuit place (first externally) is allowed to keep apart with the ground level (second externally) at other control signal places; When multichannel High-current output drive circuit works, have very large electric current and flow through first externally, because first is externally externally isolated from each other with second, even if the first ground level lifting externally, but second externally still remains unchanged, thus ensure that other spending signals can not be interfered, also ensure the normal control that can not affect whole motion control card.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, for better realizing the utility model further, as shown in Figure 2, be provided with following structure especially: in described multichannel High-current output driving circuit region, be provided with power interface, and the ground end of power interface is externally connected with first, described power interface connects with the external switch power supply of motion control card; A power interface is increased there being the region at multichannel High-current output driving circuit place, during such multichannel High-current output drive circuit works, the big current that this ground level (first externally) produces directly flows back to external switch power supply (power supply), and second can not be flow through externally, avoiding problems and multichannel High-current output driving circuit and other control signals are impacted, thus the operation stability of whole board is improved;
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of above-mentioned any embodiment, as shown in Figure 2, region, the ground place of other control signals described is provided with a power supply wiring port, and power supply wiring port is connected with external switch power supply; External switch power supply is powered to other control signal place circuit by power supply wiring port, and forms loop, and namely the second ground level electric current externally all flows to power supply wiring port, then flows into external switch power supply.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of above-mentioned any embodiment, for better realizing the utility model further, as shown in Figure 2, be provided with following structure especially: be also provided with internally on described motion control card, described internally by isolating device respectively with second externally and first externally to isolate, to internally be isolated by multiple isolating device with externally (second externally and first externally), there will not be interference between the effective inside and outside ensureing motion control card, impact controls.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, and further to better implement the present invention, described isolating device adopts optocoupler.
Photo-coupler (opticalcoupler, english abbreviation is OC), also known as photoisolator or photoelectrical coupler, is called for short optocoupler.It take light as the device that medium carrys out transmission of electric signals, usually illuminator (infrared light-emitting diode LED) and light-receiving device (photosensitive semiconductor pipe) is encapsulated in same shell.When input end power up signal, illuminator emits beam, and light-receiving device just produces photocurrent after accepting light, flows out from output terminal, thus achieves " electricity-light-electricity " conversion.Be that medium is coupled to the photoelectrical coupler of output terminal input end signal with light, due to it have that volume is little, the life-span is long, contactless, antijamming capability is strong, exports insulation between input, the advantages such as one-way transmission signal.
Signal one-way transmission, input end and output terminal fully achieve electrical isolation, output signal on input end without impact, and antijamming capability is strong, and working stability is contactless, long service life, and transfer efficiency is high; In single-chip switching power supply, utilize linear optocoupler can form opto-coupled feedback circuit, change dutycycle by regulable control end electric current, reach accurate voltage stabilizing object.
Selecting of described isolating device is not limited to optocoupler, also can adopt other isolating devices.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (6)
1. based on the ground shielding system of motion control card multichannel High-current output driving circuit, it is characterized in that: comprise motion control card, described motion control card is provided with externally, describedly externally comprise first externally with the second externally, described first is externally externally isolated from each other with second, described first is externally made up of the ground of multichannel High-current output driving circuit, and described second is externally made up of the ground of other control signals.
2. the ground shielding system based on motion control card multichannel High-current output driving circuit according to claim 1, it is characterized in that: in described multichannel High-current output driving circuit region, be provided with power interface, and the ground end of power interface is externally connected with first, described power interface connects with the external switch power supply of motion control card.
3. the ground shielding system based on motion control card multichannel High-current output driving circuit according to claim 1 and 2, it is characterized in that: be also provided with internally on described motion control card, described internally by isolating device respectively with second externally and first externally to isolate.
4. the ground shielding system based on motion control card multichannel High-current output driving circuit according to claim 3, is characterized in that: described isolating device adopts optocoupler.
5. the ground shielding system based on motion control card multichannel High-current output driving circuit according to claim 3, it is characterized in that: region, the ground place of other control signals described is provided with a power supply wiring port, and power supply wiring port is connected with external switch power supply.
6. the ground shielding system based on motion control card multichannel High-current output driving circuit according to claim 1 and 2, is characterized in that: region, the ground place of other control signals described is provided with an electricity
Source Wiring port, and power supply wiring port is connected with external switch power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608510.7U CN204790398U (en) | 2015-08-13 | 2015-08-13 | Ground isolated system based on big current output drive circuit of motion control card multichannel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608510.7U CN204790398U (en) | 2015-08-13 | 2015-08-13 | Ground isolated system based on big current output drive circuit of motion control card multichannel |
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| Publication Number | Publication Date |
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| CN204790398U true CN204790398U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520608510.7U Active CN204790398U (en) | 2015-08-13 | 2015-08-13 | Ground isolated system based on big current output drive circuit of motion control card multichannel |
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