A multi-channel power supply control device

Abstract

The application discloses a kind of multi-channel power supply control equipment, including power supply, control module, potential adjusting component, switch drive circuit component, manual switch double-channel module, photoelectric coupling selection circuit component, multiple power supply output channels and multiple current sensors, potential adjusting component and switch drive circuit component are electrically connected with control module, photoelectric coupling selection circuit component is electrically connected with switch drive circuit component, the output end of photoelectric coupling selection circuit is provided with multiple power supply output channels, the output end of manual switch double-channel module is provided with two power supply output channels, and a current sensor is connected in series on each power supply output channel, the input end of manual switch double-channel module, the power supply end of control module, the input end of each current sensor, switch drive circuit component and photoelectric coupling selection circuit component are connected with power supply.It belongs to the field of power supply control.The effect is: the output of multiple power supply output channels is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply control, and in particular to a multi-channel power supply control device. BACKGROUND

[0002] In the field of industrial automation, electronic device testing, etc., the demand for precise power supply control of multiple loads by multiple power supplies is increasingly urgent. Not only is it necessary to achieve flexible switching of multi-channel power supply output, but it is also necessary to ensure current detection accuracy, voltage regulation capability and reliable protection mechanism. The current mainstream solution in the industry relies on a combination of a relay matrix, an analog Hall sensor and a microcontroller unit. Although it can achieve basic power switching function, it exposes many problems in actual application.

[0003] The existing solution is difficult to expand channels, most of which only support 4-8 output channels. Expanding to 16 or more channels requires multiple board cards to be cascaded, resulting in complex system and reduced reliability. The current detection mostly uses analog Hall sensors, which are easily disturbed by noise and need to be polled for sampling, and the precision and real-time performance are insufficient. Traditional relays are large in size, short in service life, and restrict the integration level, making it difficult to adapt to standardized plug-in card structures. SUMMARY

[0004] Therefore, the present application provides a multi-channel power supply control device to solve the above problems in the prior art.

[0005] In order to achieve the above purpose, the present application provides the following technical solutions:

[0006] According to the first aspect of the present application, a multi-channel power supply control device includes a power supply, a control module, a potential adjustment assembly, a switch driving circuit assembly, a manual switch double-channel module, a photoelectric coupling selection circuit assembly, a plurality of power supply output channels and a plurality of current sensors. The potential adjustment assembly and the switch driving circuit assembly are electrically connected to the control module. The photoelectric coupling selection circuit assembly is electrically connected to the switch driving circuit assembly. The output end of the photoelectric coupling selection circuit is provided with a plurality of power supply output channels. The output end of the manual switch double-channel module is provided with two power supply output channels. One current sensor is connected in series on each power supply output channel. The input end of the manual switch double-channel module, the power supply end of the control module, the input end of each current sensor, the switch driving circuit assembly and the photoelectric coupling selection circuit assembly are connected to the power supply.

[0007] Further, the switch driving circuit assembly includes a plurality of switch driving circuit modules, and the photoelectric coupling selection circuit assembly includes a plurality of photoelectric coupling selection circuit modules. Each switch driving circuit is electrically connected to the control module. The input end of each photoelectric coupling selection circuit module is electrically connected to the output end of one switch driving circuit module. The output end of each photoelectric coupling selection circuit module is provided with a plurality of power supply output channels.

[0008] Further, each switch driving circuit module comprises a plurality of switch driving circuits, each photoelectric coupling selection circuit module comprises a plurality of photoelectric coupling circuits, the input end of each switch driving circuit is electrically connected with the control module, the input end of each photoelectric coupling circuit is electrically connected with the output end of one switch driving circuit, and the output end of each photoelectric coupling circuit is provided with one power output channel.

[0009] Further, each switch driving circuit comprises a transistor and a first capacitor, each photoelectric coupling circuit comprises a first photoelectric coupler, the base of the transistor is electrically connected with the control module, the collector of the transistor is connected with a power supply, the input end of the first photoelectric coupler is connected with the emitter of the transistor, the output end of the first photoelectric coupler is connected with a current sensor, one end of the first capacitor is connected with the base of the transistor, and the other end of the first capacitor is grounded.

[0010] Further, each photoelectric coupling circuit further comprises a first relay, and the first relay is connected between the first photoelectric coupler and the corresponding current sensor.

[0011] Further, each switch driving circuit further comprises a first resistor and a second resistor, the first resistor is connected between the photoelectric coupler and the emitter of the transistor, and the second resistor is connected between the base of the transistor and the power supply.

[0012] Further, the manual switch double-channel module comprises two manual switches and two second relays, the first input end of each second relay is connected with a power supply, the second input end of each second relay is connected with one manual switch, the first output end of the two second relays is connected with the same current sensor, and the second output end of each second relay is provided with one power output channel.

[0013] Further, the potential adjusting assembly comprises a second photoelectric coupler, a third photoelectric coupler, a potentiometer and a fourth photoelectric coupler, the input end of the second photoelectric coupler, the input end of the third photoelectric coupler and the input end of the fourth photoelectric coupler are connected with a power supply, the incremental pulse input pin of the potentiometer is connected with the output end of the second photoelectric coupler, the chip selection signal pin of the potentiometer is connected with the output end of the third photoelectric coupler, the direction control pin of the potentiometer is connected with the output end of the fourth photoelectric coupler, and the power supply pin of the potentiometer is connected with the power supply.

[0014] Further, the potential adjusting assembly further comprises a plurality of third resistors, and the third resistors are connected in series between the second photoelectric coupler and the power supply, between the third photoelectric coupler and the power supply and between the fourth photoelectric coupler and the power supply.

[0015] Further, the potentiometers are multiple, the third optocouplers are multiple, the input end of each third optocoupler is connected with the power supply, the output end of each third optocoupler is connected with the chip select signal pin of one potentiometer respectively, the incremental pulse input pin of each potentiometer is connected with the output end of the second optocoupler, the direction control pin of each potentiometer is connected with the output end of the fourth optocoupler, and the power supply pin of each potentiometer is connected with the power supply.

[0016] The application has the following advantages: multiple power output channels are realized without multiple board card cascades through the setting of the optocoupling selection circuit assembly, reliability is improved, two independent outputs are additionally provided by the manual switch double-channel module, the application of channels is further expanded, the current change of each channel is accurately captured through the setting of the current sensor in series with each power output channel, accurate data support is provided for power supply state monitoring and protection, the output voltage can be dynamically adjusted according to the demand through the setting of the electrical connection of the potential regulating assembly and the control module, the demand for fine voltage control in the scene of automatic testing is met, the anti-interference ability and integration of the switching of each power output channel are improved through the optocoupling selection circuit assembly, and the standardized plug-in card structure is more suitable. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0018] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions that the application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the application can produce, should still fall within the scope covered by the disclosed technical content.

[0019] Figure 1 A first schematic view of a multi-channel power supply control device is provided for some embodiments of the application.

[0020] Figure 2 A second schematic view of a multi-channel power supply control device is provided for some embodiments of the application.

[0021] Figure 3 A circuit schematic diagram of a control module of a multi-channel power supply control device is provided for some embodiments of the application.

[0022] Figure 4 A first switch driving circuit module, a first photoelectric coupling selection circuit module, a first current detection group, and a first power output channel group of a multi-channel power supply control device provided by some embodiments of the present application are combined in the circuit schematic diagram.

[0023] Figure 5 A second switch driving circuit module, a second photoelectric coupling selection circuit module, a second current detection group, and a second power output channel group of a multi-channel power supply control device provided by some embodiments of the present application are combined in the circuit schematic diagram.

[0024] Figure 6 A third switch driving circuit module, a third photoelectric coupling selection circuit module, a third current detection group, and a third power output channel group of a multi-channel power supply control device provided by some embodiments of the present application are combined in the circuit schematic diagram.

[0025] Figure 7 A fourth switch driving circuit module, a fourth photoelectric coupling selection circuit module, a fourth current detection group, and a fourth power output channel group of a multi-channel power supply control device provided by some embodiments of the present application are combined in the circuit schematic diagram.

[0026] Figure 8 A manual switch dual-channel module of a multi-channel power supply control device provided by some embodiments of the present application is combined in the circuit schematic diagram.

[0027] Figure 9 A potential adjustment assembly of a multi-channel power supply control device provided by some embodiments of the present application is combined in the circuit schematic diagram.

[0028] In the figure: 1, control module; 11, system reset control circuit; 12, power filter circuit; 13, crystal oscillator circuit; 14, connector; 15, reset circuit;

[0029] 2, manual switch dual-channel module; 21, manual switch; 22, second relay; 23, second diode; 24, third capacitor; 25, second capacitor; 26, first fuse;

[0030] 3, potential adjustment assembly; 31, second photoelectric coupler; 32, third resistor; 33, third photoelectric coupler; 34, potentiometer; 35, fourth photoelectric coupler;

[0031] 4, switch driving circuit assembly; 41, first switch driving circuit module; 42, second switch driving circuit module; 43, third switch driving circuit module; 44, fourth switch driving circuit module; 45, triode; 46, first resistor; 47, first capacitor; 48, second resistor;

[0032] 5, optoelectronic coupling selection circuit assembly; 51, first optoelectronic coupling selection circuit module; 52, second optoelectronic coupling selection circuit module; 53, third optoelectronic coupling selection circuit module; 54, fourth optoelectronic coupling selection circuit module; 55, first optoelectronic coupler; 56, first relay; 57, first diode;

[0033] 6, current detection assembly; 61, first current detection group; 611, first current sensor; 612, second current sensor; 613, third current sensor; 614, fourth current sensor; 62, second current detection group; 621, fifth current sensor; 622, sixth current sensor; 623, seventh current sensor; 624, eighth current sensor; 63, third current detection group; 631, ninth current sensor; 632, tenth current sensor; 633, eleventh current sensor; 634, twelfth current sensor; 64, fourth current detection group; 641, thirteenth current sensor; 642, fourteenth current sensor; 643, fifteenth current sensor; 644, sixteenth current sensor; 65, current sensor chip; 66, fourth capacitor; 67, second fuse;

[0034] 7, power output channel assembly; 71, first power output channel group; 711, first power output channel; 712, second power output channel; 713, third power output channel; 714, fourth power output channel; 72, second power output channel group; 721, fifth power output channel; 722, sixth power output channel; 723, seventh power output channel; 724, eighth power output channel; 73, third power output channel group; 731, ninth power output channel; 732, tenth power output channel; 733, eleventh power output channel; 734, twelfth power output channel; 74, fourth power output channel group; 741, thirteenth power output channel; 742, fourteenth power output channel; 743, fifteenth power output channel; 744, sixteenth power output channel;

[0035] 8, power supply. DETAILED DESCRIPTION

[0036] The present application is herein described, by way of example only, with reference to embodiments thereof. As is readily appreciated by those skilled in the art, other embodiments of the present application can be implemented, without departing from the spirit and scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made to the specific embodiments described and shown herein without departing from the spirit and scope of the present application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0037] As Figures 1 to 9As shown, the multi-channel power supply control device in the first aspect of the present application comprises a power supply 8, a control module 1, a potential adjusting assembly 3, a switch driving circuit assembly 4, a manual switch double-channel module 2, a photoelectric coupling selection circuit assembly 5, a plurality of power supply output channels and a plurality of current sensors, the potential adjusting assembly 3 and the switch driving circuit assembly 4 are electrically connected with the control module 1, the photoelectric coupling selection circuit assembly 5 is electrically connected with the switch driving circuit assembly 4, the output end of the photoelectric coupling selection circuit is provided with a plurality of power supply output channels, the output end of the manual switch double-channel module 2 is provided with two power supply output channels, each power supply output channel is connected in series with a current sensor, the input end of the manual switch double-channel module 2, the power supply end of the control module 1, the input end of each current sensor, the switch driving circuit assembly 4 and the photoelectric coupling selection circuit assembly 5 are connected with the power supply 8.

[0038] In the above embodiment, it should be noted that the power supply filter circuit 12, the crystal oscillator circuit 13, the connector 14, the reset circuit 15 and the system reset control circuit 11 are also included, the control chip, the power supply filter circuit 12, the crystal oscillator circuit 13, the connector 14, the reset circuit 15, the potential adjusting assembly 3, the switch driving circuit assembly 4, the manual switch double-channel module 2, the photoelectric coupling selection circuit assembly 5, the plurality of power supply output channels and the plurality of current sensors and the system reset control circuit 11 are integrated on the same circuit board.

[0039] The number of the plurality of power supply output channels can be 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or more, etc.; the number of the current sensors is one less than the number of the power supply output channels.

[0040] The two output channels of the output end of the manual switch double-channel module 2 are connected in parallel and connected in series with the same current sensor.

[0041] The power supply 8 adopts an existing power supply 8, which can be an external power supply 8 or an existing power supply circuit integrated on a circuit board, the power supply 8 can output a voltage of 12V, 3.3V, 5V or 220V, or can output other corresponding voltages, and the specific corresponding voltage can be output according to the actual situation, and specific details are not discussed too much.

[0042] The technical effects achieved by the above embodiments are: through the cooperation of the photoelectric coupling selection circuit component 5 and the setting of multiple power output channels, multi-channel output can be realized without cascading multiple board cards, the reliability is improved, the manual switch double-channel module 2 provides two independent outputs, further expanding the application of channels, and through the setting of the current sensor in series with each power output channel, the current change of each channel can be accurately captured, providing accurate data support for power supply state monitoring and protection; through the electrical connection of the potential adjusting component 3 and the control module 1, the output voltage can be dynamically adjusted according to the needs, meeting the needs of fine control of voltage in automatic testing and other scenes, and the anti-interference ability and integration of each power output channel switching can be improved through the photoelectric coupling selection circuit component 5, which is more suitable for standardized plug-in card structure.

[0043] Optionally, as shown in some embodiments, the switch driving circuit component 4 includes a plurality of switch driving circuit modules, the photoelectric coupling selection circuit component 5 includes a plurality of photoelectric coupling selection circuit modules, the plurality of switch driving circuit modules are electrically connected with the control module 1, the input end of each photoelectric coupling selection circuit module is electrically connected with the output end of one switch driving circuit module, and the output end of each photoelectric coupling selection circuit module is provided with a plurality of power output channels. Figures 1 to 9

[0044] In the above optional embodiments, it should be noted that the number of the plurality of switch driving circuit modules can be 1, 2, 3, 4, 5 or more.

[0045] The number of the plurality of photoelectric coupling selection circuit modules can be 1, 2, 3, 4, 5 or more.

[0046] Preferably, the number of the plurality of switch driving circuit modules can be 4, and the four switch driving circuit modules are respectively a first switch driving circuit module 41, a second switch driving circuit module 42, a third switch driving circuit module 43 and a fourth switch driving circuit module 44. The number of the plurality of photoelectric coupling selection circuit modules can be 4, and the four photoelectric coupling selection circuit modules are respectively a first photoelectric coupling selection circuit module 51, a second photoelectric coupling selection circuit module 52, a third photoelectric coupling selection circuit module 53 and a fourth photoelectric coupling selection circuit module 54.

[0047] ​The input end of the first switch drive circuit module 41, the input end of the second switch drive circuit module 42, the input end of the third switch drive circuit module 43 and the input end of the fourth switch drive circuit module 44 are electrically connected with the control module 1; the input end of the first photoelectric coupling selection circuit module 51 is connected with the output end of the first switch drive circuit module 41, the input end of the second photoelectric coupling selection circuit module 52 is connected with the output end of the second switch drive circuit module 42, the input end of the third photoelectric coupling selection circuit module 53 is connected with the output end of the third switch drive circuit module 43, and the input end of the fourth photoelectric coupling selection circuit module 54 is connected with the output end of the fourth switch drive circuit module 44; the output end of the first photoelectric coupling selection circuit module 51, the output end of the second photoelectric coupling selection circuit module 52, the output end of the third photoelectric coupling selection circuit module 53 and the output end of the fourth photoelectric coupling selection circuit module 54 are respectively provided with a first power supply output channel group 71, a second power supply output channel group 72, a third power supply output channel group 73 and a fourth power supply output channel group 74, and the first power supply output channel group 71, the second power supply output channel group 72, the third power supply output channel group 73 and the fourth power supply output channel group 74 each include at least one power supply output channel; the first photoelectric coupling selection circuit module 51 is serially connected with a first current detection group 61, the second photoelectric coupling selection circuit module 52 is serially connected with a second current detection group 62, the third photoelectric coupling selection circuit module 53 is serially connected with a third current detection group 63, and the fourth photoelectric coupling selection circuit module 54 is serially connected with a fourth current detection group 64.

[0048] Optionally, as shown in FIG. 1, in some embodiments, each switch drive circuit module includes a plurality of switch drive circuits, each photoelectric coupling selection circuit module includes a plurality of photoelectric coupling circuits, the input end of each switch drive circuit is electrically connected with the control module 1, the input end of each photoelectric coupling circuit is electrically connected with the output end of a switch drive circuit, and the output end of each photoelectric coupling circuit is provided with a power supply output channel. Figures 1 to 9

[0049] In the above optional embodiments, it should be noted that the number of the plurality of switch drive circuits included in each switch drive circuit module can be 1, 2, 3, 4, 5 or more.

[0050] The number of the plurality of photoelectric coupling circuits included in each photoelectric coupling selection circuit module can be 1, 2, 3, 4, 5 or more.

[0051] Preferably, each switch drive circuit module includes four switch drive circuits, and each photoelectric coupling selection circuit module includes four photoelectric coupling circuits.

[0052] ​The first current detection group 61 comprises a first current sensor 611, a second current sensor 612, a third current sensor 613 and a fourth current sensor 614.

[0053] The second current detection group 62 comprises a fifth current sensor 621, a sixth current sensor 622, a seventh current sensor 623 and an eighth current sensor 624.

[0054] The third current detection group 63 comprises a ninth current sensor 631, a tenth current sensor 632, an eleventh current sensor 633 and a twelfth current sensor 634.

[0055] The fourth current detection group 64 comprises a thirteenth current sensor 641, a fourteenth current sensor 642, a fifteenth current sensor 643 and a sixteenth current sensor 644.

[0056] The first power output channel group 71 comprises a first power output channel 711, a second power output channel 712, a third power output channel 713 and a fourth power output channel 714.

[0057] The second power output channel group 72 comprises a fifth power output channel 721, a sixth power output channel 722, a seventh power output channel 723 and an eighth power output channel 724.

[0058] The third power output channel group 73 comprises a ninth power output channel 731, a tenth power output channel 732, an eleventh power output channel 733 and a twelfth power output channel 734.

[0059] The fourth power output channel group 74 comprises a thirteenth power output channel 741, a fourteenth power output channel 742, a fifteenth power output channel 743 and a sixteenth power output channel 744.

[0060] The output end of each of the four switch driving circuits of the first switch driving circuit module 41 is connected with the input end of one of the four optoelectronic coupling circuits of the first optoelectronic coupling selection circuit module 51, the first power output channel 711, the second power output channel 712, the third power output channel 713 and the fourth power output channel 714 correspond to the output end of one optoelectronic coupling circuit respectively, and the first current sensor 611, the second current sensor 612, the third current sensor 613 and the fourth current sensor 614 are respectively arranged in series on the four optoelectronic coupling circuits.

[0061] The output end of each of the four switch drive circuits of the second switch drive circuit module 42 is connected with the input end of one of the four optoelectronic coupling circuits of the second optoelectronic coupling selection circuit module 52, the fifth power output channel 721, the sixth power output channel 722, the seventh power output channel 723 and the eighth power output channel 724 are respectively connected with the output end of one of the four optoelectronic coupling circuits, and the fifth current sensor 621, the sixth current sensor 622, the seventh current sensor 623 and the eighth current sensor 624 are respectively connected in series with the four optoelectronic coupling circuits.

[0062] The output end of each of the four switch drive circuits of the third switch drive circuit module 43 is connected with the input end of one of the four optoelectronic coupling circuits of the third optoelectronic coupling selection circuit module 53, the ninth power output channel 731, the tenth power output channel 732, the eleventh power output channel 733 and the twelfth power output channel 734 are respectively connected with the output end of one of the four optoelectronic coupling circuits, and the ninth current sensor 631, the tenth current sensor 632, the eleventh current sensor 633 and the twelfth current sensor 634 are respectively connected in series with the four optoelectronic coupling circuits.

[0063] The output end of each of the four switch drive circuits of the fourth switch drive circuit module 44 is connected with the input end of one of the four optoelectronic coupling circuits of the fourth optoelectronic coupling selection circuit module 54, the thirteenth power output channel 741, the fourteenth power output channel 742, the fifteenth power output channel 743 and the sixteenth power output channel 744 are respectively connected with the output end of one of the four optoelectronic coupling circuits, and the thirteenth current sensor 641, the fourteenth current sensor 642, the fifteenth current sensor 643 and the sixteenth current sensor 644 are respectively connected in series with the four optoelectronic coupling circuits.

[0064] The first current detection group 61, the second current detection group 62, the third current detection group 63 and the fourth current detection group 64 are combined to form a current detection assembly 6.

[0065] The first power output channel group 71, the second power output channel group 72, the third power output channel group 73 and the fourth power output channel group 74 are combined to form a power output channel assembly 7.

[0066] The advantages of the above optional embodiments are as follows: Compared with the traditional power control module that only supports 4 to 8 channels, this device supports the control of 18 independent power output channels, which greatly improves the channel integration density per unit area and is suitable for large-scale testing and distributed power supply scenarios; each power output channel is equipped with an independent current sensor, and with the setting of the switch drive circuit, it has high real-time performance, and is equipped with a self-resetting fuse to further enhance system safety.

[0067] Optional, such as Figures 1 to 9 As shown, in some embodiments, each switch driving circuit includes a transistor 45 and a first capacitor 47, and each optocoupler circuit includes a first optocoupler 55. The base of the transistor 45 is electrically connected to the control module 1, the collector of the transistor 45 is connected to the power supply 8, the input terminal of the first optocoupler 55 is connected to the emitter of the transistor 45, the output terminal of the first optocoupler 55 is connected to a current sensor, one end of the first capacitor 47 is connected to the base of the transistor 45, and the other end of the first capacitor 47 is grounded.

[0068] Optional, such as Figures 1 to 9 As shown, in some embodiments, each optocoupler circuit further includes a first relay 56, which is connected between the first optocoupler 55 and the corresponding current sensor.

[0069] In the above optional embodiments, it should be noted that each optocoupler circuit further includes a first diode 57, and each first diode 57 is connected in parallel with the corresponding first relay 56.

[0070] The beneficial effect of the above optional embodiments is that reliable power supply and power cut-off of the corresponding power output channel are achieved through the first relay 56.

[0071] Optional, such as Figures 1 to 9 As shown, in some embodiments, each switch driving circuit further includes a first resistor 46 and a second resistor 48. The first resistor 46 is connected between the optocoupler and the emitter of the transistor 45, and the second resistor 48 is connected between the base of the transistor 45 and the power supply 8.

[0072] The advantages of the above optional embodiments are: by setting the first resistor 46 and the second resistor 48, the short circuit of the switch drive circuit can be effectively avoided, thus ensuring safety.

[0073] Optional, such as Figures 1 to 9As shown, in some embodiments, the manual switch dual-channel module 2 includes two manual switches 21 and two second relays 22. The first input terminal of each second relay 22 is connected to the power supply 8, and the second input terminal of each second relay 22 is connected to a manual switch 21. The first output terminals of the two second relays 22 are connected to the same current sensor, and the second output terminal of each second relay 22 is provided with a power output channel.

[0074] In the above optional embodiments, it should be noted that the manual switch dual-channel module 2 further includes a second diode 23, a third capacitor 24, a second capacitor 25 and a first fuse 26. The second diode 23 is connected in parallel with the second relay 22, and the second capacitor 25 is connected in series between the two relays. The third capacitor 24 is connected in series between the relay and the power supply 8, and the output terminal of the first fuse 26 is connected to the second capacitor 25.

[0075] Each current sensor includes a current sensor chip 65, a fourth capacitor 66, and a second fuse 67. The fourth capacitor 66 is connected between the current input terminal and the current negative input terminal of the current sensor chip 65. Two second relays 22 are connected in parallel and then in series with the current sensor chip 65. The fuse is connected between the input power supply of the current sensor and the fourth capacitor 66.

[0076] The advantages of the above optional embodiments are: by cooperating with two manual switches 21 and two second relays 22, the manual switches 21 control the opening and closing of the two power output channels, thus increasing the applicable scenarios of this device.

[0077] Optional, such as Figures 1 to 9 As shown, in some embodiments, the potential adjustment component 3 includes a second optocoupler 31, a third optocoupler 33, a potentiometer 34, and a fourth optocoupler 35. The input terminals of the second optocoupler 31, the third optocoupler 33, and the fourth optocoupler 35 are all connected to the power supply 8. The incremental pulse input pin of the potentiometer 34 is connected to the output terminal of the second optocoupler 31. The chip select signal pin of the potentiometer 34 is connected to the output terminal of the third optocoupler 33. The direction control pin of the potentiometer 34 is connected to the output terminal of the fourth optocoupler 35. The power supply pin of the potentiometer 34 is connected to the power supply 8.

[0078] Optional, such as Figures 1 to 9 As shown, in some embodiments, the potential adjustment component 3 further includes a plurality of third resistors 32, and the third resistors 32 are connected in series between the second optocoupler 31 and the power supply 8, between the third optocoupler 33 and the power supply 8, and between the fourth optocoupler 35 and the power supply 8.

[0079] Optional, such as Figures 1 to 9As shown, in some embodiments, there are multiple potentiometers 34, and multiple third optocouplers 33, the input end of each third optocoupler 33 is connected with the power supply 8, the output end of each third optocoupler 33 is connected with the chip select signal pin of one potentiometer 34 respectively, the increment pulse input pin of each potentiometer 34 is connected with the output end of the second optocoupler 31, the direction control pin of each potentiometer 34 is connected with the output end of the fourth optocoupler 35, and the power supply pin of each potentiometer 34 is connected with the power supply 8.

[0080] In the above-mentioned optional embodiments, it should be noted that the number of potentiometers 34 can be 2, 3, 4 or more, which can be set according to actual needs, and the number of third optocouplers 33 is the same as the number of potentiometers 34.

[0081] Preferably, the number of potentiometers 34 and the number of third optocouplers 33 are both three, and each potentiometer 34 is a digital potentiometer 34 with power-off memory.

[0082] The above-mentioned optional embodiments have the beneficial effects that: by setting the digital potentiometer 34 with power-off memory to cooperate with the optocoupler to realize control isolation, remote adjustment is supported through the host computer command, which can be used for external analog power supply adjustment, signal simulation, precise resistance setting and other functions, and the programmable ability of the system and the expansion of the application scene are enhanced.

[0083] Although the present application has been described in detail by the general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, are within the scope of the present application.

[0084] The terms such as "upper", "lower", "left", "right", "middle" and the like used in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the implementation scope of the present application.

Claims

1. A multi-channel power supply control device, characterized by, The utility model relates to a kind of power supply control systems, including power supply (8), control module (1), potential regulating component (3), switch drive circuit component (4), manual switch double channel module (2), photoelectric coupling selection circuit component (5), multiple power supply output channels and multiple current sensors, the potential regulating component (3) and the switch drive circuit component (4) are electrically connected with the control module (1), the photoelectric coupling selection circuit component (5) is electrically connected with the switch drive circuit component (4), the output of the photoelectric coupling selection circuit is provided with multiple power supply output channels, the output of the manual switch double channel module (2) is provided with two power supply output channels, and one current sensor is connected in series on each power supply output channel, the input of the manual switch double channel module (2), the power end of the control module (1), the input of each current sensor, the switch drive circuit component (4) and the photoelectric coupling selection circuit component (5) are connected with the power supply (8);The potential regulating component (3) includes second photoelectric coupler (31), third photoelectric coupler (33), potentiometer (34) and fourth photoelectric coupler (35), the input of the second photoelectric coupler (31), the input of the third photoelectric coupler (33) and the input of the fourth photoelectric coupler (35) are connected with the power supply (8), the incremental pulse input pin of the potentiometer (34) is connected with the output of the second photoelectric coupler (31), the chip select signal pin of the potentiometer (34) is connected with the output of the third photoelectric coupler (33), the direction control pin of the potentiometer (34) is connected with the output of the fourth photoelectric coupler (35), and the power supply pin of the potentiometer (34) is connected with the power supply (8).

2. A multiple channel power supply control device according to claim 1, wherein The switch drive circuit component (4) includes a plurality of switch drive circuit modules, and the photoelectric coupling selection circuit component (5) includes a plurality of photoelectric coupling selection circuit modules.

3. A multiple channel power supply control device according to claim 2, wherein Each of the switch drive circuit modules includes a plurality of switch drive circuits, and each of the photoelectric coupling selection circuit modules includes a plurality of photoelectric coupling circuits. The input of each of the switch drive circuits is electrically connected with the control module (1), the input of each of the photoelectric coupling circuits is electrically connected with the output of one of the switch drive circuits, and the output of each of the photoelectric coupling circuits is provided with one of the power supply output channels.

4. A multiple channel power supply control device according to claim 3, wherein Each of the switch drive circuits comprises a transistor (45) and a first capacitor (47), each of the photoelectric coupling circuits comprises a first photoelectric coupler (55), the base of the transistor (45) is electrically connected with the control module (1), the collector of the transistor (45) is connected with a power supply (8), the input end of the first photoelectric coupler (55) is connected with the emitter of the transistor (45), the output end of the first photoelectric coupler (55) is connected with the current sensor, one end of the first capacitor (47) is connected with the base of the transistor (45), and the other end of the first capacitor (47) is grounded.

5. A multiple channel power supply control device according to claim 4, wherein Each of the photoelectric coupling circuits further comprises a first relay (56), and the first relay (56) is connected between the first photoelectric coupler (55) and the corresponding current sensor.

6. A multiple channel power supply control device according to claim 4, wherein Each of the switch drive circuits further comprises a first resistor (46) and a second resistor (48), the first resistor (46) is connected between the photoelectric coupler and the emitter of the transistor (45), and the second resistor (48) is connected between the base of the transistor (45) and the power supply (8).

7. A multiple channel power supply control device according to claim 1, wherein The manual switch double-channel module (2) comprises two manual switches (21) and two second relays (22), the first input end of each of the second relays (22) is connected with the power supply (8), the second input end of each of the second relays (22) is respectively connected with one of the manual switches (21), the first output ends of the two second relays (22) are connected with the same current sensor, and the second output end of each of the second relays (22) is respectively provided with one of the power supply output channels.

8. A multiple channel power supply control device according to claim 1, wherein The potential adjusting assembly (3) further comprises a plurality of third resistors (32), and the third resistors (32) are connected in series between the second photoelectric coupler (31) and the power supply (8), between the third photoelectric coupler (33) and the power supply (8), and between the fourth photoelectric coupler (35) and the power supply (8).

9. A multiple channel power supply control device according to claim 8, wherein, The potentiometer (34) is provided in plurality, and the third photoelectric coupler (33) is provided in plurality, the input end of each of the third photoelectric couplers (33) is connected with the power supply (8), the output end of each of the third photoelectric couplers (33) is connected with the chip select signal pin of one of the potentiometers (34) respectively, the increment pulse input pin of each of the potentiometers (34) is connected with the output end of the second photoelectric coupler (31), the direction control pin of each of the potentiometers (34) is connected with the output end of the fourth photoelectric coupler (35), and the power supply pin of each of the potentiometers (34) is connected with the power supply (8).

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