Multi-instruction function control circuit

Abstract

The utility model provides a multi-instruction function control circuit, and belongs to the technical field of power supply. The DC / DC converter specifically comprises a first DC input port positive electrode, a second DC input port positive electrode, a DC input port negative electrode, a first control port, a second control port, a first optical coupler, a second optical coupler, a DC / DC converter, a DC output end positive electrode and a DC output end negative electrode, when the first DC input port positive electrode and the first control port are connected with the DC input port negative electrode, or the second DC input port positive electrode and the second control port are connected with the DC input port negative electrode. Or when the first DC input port positive electrode, the second DC input port positive electrode, the first control port and the second control port are both connected with the DC input port negative electrode, the DC / DC converter has output. The circuit is suitable for multi-path redundancy input and multi-path instruction control circuits, is used for switching input and control modes, and is good in circuit selectivity, stable in operation and convenient to use.

Description

Technical Field

[0001] The present application relates to the field of power supply, and in particular to a multi-instruction function control circuit. Background Art

[0002] In the technical field of power supply, it is often necessary to improve input reliability during work, and there are often multiple redundant inputs and multiple command controls to switch inputs and controls. For example, when there are two or more inputs, and the control logic is that the corresponding control is grounded, there is output, and disconnected, there is no output. Utility Model Content

[0003] In view of this, the present application provides a multi-instruction function control circuit that solves the problems in the prior art and is used for multi-channel redundant input and multi-channel instruction control circuits to switch input and control modes. The circuit has good selectivity, stable operation, and is easy to use, which improves the convenience and reliability of use and ensures the normal operation of the system.

[0004] The present application provides a multi-instruction function control circuit adopts the following technical solution:

[0005] A multi-instruction function control circuit comprises a first DC input port positive pole, a second DC input port positive pole, a DC input port negative pole, a first control port, a second control port, a first optical coupler, a second optical coupler, a DC / DC converter, a DC output terminal positive pole and a DC output terminal negative pole;

[0006] The positive electrode of the first DC input port and the positive electrode of the second DC input port are electrically connected to the positive electrode of the input end of the DC / DC converter through an isolation component, and the negative electrode of the DC input port is electrically connected to the negative electrode of the input end of the DC / DC converter, and the isolation component is used to isolate the current of the positive electrode of the first DC input port and the positive electrode of the second DC input port;

[0007] The positive electrode of the first DC input port and the first control port are electrically connected to the input end of the first optical coupler, and the positive electrode of the second DC input port and the second control port are electrically connected to the input end of the second optical coupler;

[0008] One pin of the first optocoupler output end is electrically connected to the enable pin of the DC / DC converter, another pin of the first optocoupler output end is electrically connected to one pin of the second optocoupler output end, and another pin of the second optocoupler output end is electrically connected to the negative electrode of the DC input port;

[0009] The positive pole of the output end of the DC / DC converter is electrically connected to the positive pole of the DC output end, and the negative pole of the output end of the DC / DC converter is electrically connected to the negative pole of the DC output end.

[0010] Optionally, the isolation component includes a first diode and a second diode, the positive electrode of the first DC input port is electrically connected to the anode of the first diode, the positive electrode of the second DC input port is electrically connected to the anode of the second diode, and the cathodes of the first diode and the second diode are collinear and electrically connected to the positive electrode of the input end of the DC / DC converter.

[0011] Optionally, the isolation component is a diode, which includes two anodes and a cathode, one anode of the diode is electrically connected to the positive electrode of the first DC input port, the other anode of the diode is electrically connected to the positive electrode of the second DC input port, and the cathode of the diode is electrically connected to the positive electrode of the input end of the DC / DC converter.

[0012] Optionally, the first optocoupler and the second optocoupler are both four-pin optocouplers.

[0013] Optionally, the positive pole of the first DC input port is electrically connected to the anode of the LED of the first optocoupler, the first control port is electrically connected to the cathode of the LED of the first optocoupler, the positive pole of the second DC input port is electrically connected to the anode of the LED of the second optocoupler, and the second control port is electrically connected to the cathode of the LED of the second optocoupler.

[0014] Optionally, a resistor R1 is connected in series between the positive electrode of the first DC input port and the LED anode of the first optocoupler, and a resistor R2 is connected in series between the positive electrode of the second DC input port and the LED anode of the second optocoupler.

[0015] Optionally, the emitter of the photodetector of the first optocoupler is electrically connected to the enable pin of the DC / DC converter, the collector of the photodetector of the first optocoupler is electrically connected to the emitter of the photodetector of the second optocoupler, and the collector of the photodetector of the second optocoupler is electrically connected to the negative pole of the DC input port.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] The utility model circuit is suitable for multi-channel redundant input and multi-channel instruction control circuits for switching input and control modes. The circuit has good selectivity, stable operation, and convenient use, thereby improving the convenience and reliability of use and ensuring the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is the schematic diagram of the multi-instruction function control circuit of this application. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0025] An embodiment of the present application provides a multi-instruction function control circuit.

[0026] like Figure 1As shown, a multi-instruction function control circuit includes a first DC input port positive electrode +I N1, a second DC input port positive electrode +I N2, a DC input port negative electrode +I NG, a first control port K1, a second control port K2, a first optical coupler V2, a second optical coupler V3, a DC / DC converter N1, a DC output positive electrode +OUT and a DC output negative electrode -OUT.

[0027] The positive electrode +I N1 of the first DC input port and the positive electrode +I N2 of the second DC input port are electrically connected to the positive electrode +VI pin of the input end of the DC / DC converter N1 through an isolation component, and the negative electrode +I NG of the DC input port is electrically connected to the negative electrode -VI pin of the input end of the DC / DC converter N1, and the isolation component is used to isolate the current of the positive electrode +I N1 of the first DC input port and the positive electrode +I N2 of the second DC input port.

[0028] The first optocoupler V2 and the second optocoupler V3 are both four-pin optocouplers, wherein the four pins of the four-pin optocoupler are respectively: pin 1: LED anode; pin 2: LED cathode; pin 3: photodetector collector; pin 4: photodetector emitter.

[0029] The first DC input port positive electrode +I N1 and the first control port K1 are electrically connected to the input end of the first optical coupler V2, and the second DC input port positive electrode +I N2 and the second control port K2 are electrically connected to the input end of the second optical coupler V3.

[0030] Specifically, the positive pole +I N1 of the first DC input port is electrically connected to the LED anode of the first optocoupler V2, the first control port K1 is electrically connected to the LED cathode of the first optocoupler V2, the positive pole +I N2 of the second DC input port is electrically connected to the LED anode of the second optocoupler V3, and the second control port K2 is electrically connected to the LED cathode of the second optocoupler V3.

[0031] One pin of the output end of the first optocoupler V2 is electrically connected to the enable end RC pin of the DC / DC converter N1, another pin of the output end of the first optocoupler V2 is electrically connected to one pin of the output end of the second optocoupler V3, and another pin of the output end of the second optocoupler V3 is electrically connected to the negative pole +I NG of the DC input port.

[0032] Specifically, the emitter of the photodetector of the first optocoupler V2 is electrically connected to the enable end RC pin of the DC / DC converter N1, the collector of the photodetector of the first optocoupler V2 is electrically connected to the emitter of the photodetector of the second optocoupler V3, and the collector of the photodetector of the second optocoupler V3 is electrically connected to the negative pole +I NG of the DC input port.

[0033] A resistor R1 is connected in series between the positive electrode +I N1 of the first DC input port and the LED anode of the first optical coupler V2, and a resistor R2 is connected in series between the positive electrode +I N2 of the second DC input port and the LED anode of the second optical coupler V3.

[0034] The output positive terminal +VO of the DC / DC converter N1 is electrically connected to the DC output positive terminal +OUT, and the output negative terminal -VO of the DC / DC converter N1 is electrically connected to the DC output negative terminal -OUT.

[0035] In one embodiment, the isolation component includes a first diode and a second diode, the positive electrode of the first DC input port is electrically connected to the anode of the first diode, the positive electrode of the second DC input port is electrically connected to the anode of the second diode, and the cathodes of the first diode and the second diode are collinearly connected to the positive electrode of the input terminal of the DC / DC converter.

[0036] In one embodiment, the isolation component is a diode V1, and the diode V1 includes two anodes and a cathode. One anode A1 of the diode V1 is electrically connected to the positive electrode +I N1 of the first DC input port, the other anode A2 of the diode V1 is electrically connected to the positive electrode +I N2 of the second DC input port, and the cathode K of the diode V1 is electrically connected to the positive electrode +VI pin of the input end of the DC / DC converter.

[0037] The DC / DC converter N1 is a positive logic output. When the enable terminal RC is suspended, there is an output. When the enable terminal RC is grounded, there is no output. The first optocoupler V2 and the first optocoupler V3 are negative logic optocouplers, that is, when the input arm is electrically conductive, the output arm is disconnected, and when the input arm is disconnected without electricity, the output arm is conductive.

[0038] Since the output arms of the first optical coupler V2 and the first optical coupler V3 are in series connection, when the positive electrode of the first DC input port +I N1 and the first control port K1 are connected to the negative electrode of the DC input port +I NG, the output arm of the first optical coupler V2 is disconnected, the enable terminal RC of the DC / DC converter N1 is suspended, and the power supply has output.

[0039] When the second DC input port positive electrode +I N2 is connected and the second control port K2 is connected to the DC input port negative electrode +I NG, the output arm of the second optical coupler V3 is disconnected, the enable terminal RC of the DC / DC converter N1 is suspended, and the power supply has output.

[0040] When the positive pole of the first DC input port +I N1, the positive pole of the second DC input port +I N2, and the first control port K1 and the second control port K2 are connected to the negative pole of the DC input port +I NG, the output arms of the first optical coupler V2 and the second optical coupler V3 are disconnected, the enable terminal RC of the DC / DC converter N1 is suspended, and the power supply has output. The entire circuit operates stably and reliably.

[0041] When the positive pole of the first DC input port +I N1 and the first control port K1 are connected to the negative pole of the DC input port +I NG, or when the positive pole of the second DC input port +I N2 and the second control port K2 are connected to the negative pole of the DC input port +I NG, or when the positive pole of the first DC input port +I N1 and the positive pole of the second DC input port +I N2 and the first control port K1 and the second control port K2 are all connected to the negative pole of the DC input port +I NG, the DC / DC converter N1 has output.

[0042] The utility model circuit is suitable for multi-channel redundant input and multi-channel instruction control circuits for switching input and control modes. The circuit has good selectivity, stable operation, and convenient use, thereby improving the convenience and reliability of use and ensuring the normal operation of the system.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A multi-instruction function control circuit, characterized in that: It includes a first DC input port positive pole, a second DC input port positive pole, a DC input port negative pole, a first control port, a second control port, a first optical coupler, a second optical coupler, a DC / DC converter, a DC output positive pole and a DC output negative pole; The positive electrode of the first DC input port and the positive electrode of the second DC input port are electrically connected to the positive electrode of the input end of the DC / DC converter through an isolation component, and the negative electrode of the DC input port is electrically connected to the negative electrode of the input end of the DC / DC converter, and the isolation component is used to isolate the current of the positive electrode of the first DC input port and the positive electrode of the second DC input port; The positive electrode of the first DC input port and the first control port are electrically connected to the input end of the first optical coupler, and the positive electrode of the second DC input port and the second control port are electrically connected to the input end of the second optical coupler; One pin of the first optocoupler output end is electrically connected to the enable pin of the DC / DC converter, another pin of the first optocoupler output end is electrically connected to one pin of the second optocoupler output end, and another pin of the second optocoupler output end is electrically connected to the negative electrode of the DC input port; The positive pole of the output end of the DC / DC converter is electrically connected to the positive pole of the DC output end, and the negative pole of the output end of the DC / DC converter is electrically connected to the negative pole of the DC output end.

2. The multi-instruction function control circuit according to claim 1, characterized in that: The isolation component includes a first diode and a second diode, the positive electrode of the first DC input port is electrically connected to the anode of the first diode, the positive electrode of the second DC input port is electrically connected to the anode of the second diode, and the cathodes of the first diode and the second diode are electrically connected to the positive electrode of the input end of the DC / DC converter after being collinear.

3. The multi-instruction function control circuit according to claim 1, characterized in that: The isolation component is a diode, which includes two anodes and a cathode. One anode of the diode is electrically connected to the positive electrode of the first DC input port, the other anode of the diode is electrically connected to the positive electrode of the second DC input port, and the cathode of the diode is electrically connected to the positive electrode of the input end of the DC / DC converter.

4. The multi-instruction function control circuit according to claim 1, characterized in that: The first optocoupler and the second optocoupler are both four-pin optocouplers.

5. The multi-instruction function control circuit according to claim 4, characterized in that: The positive pole of the first DC input port is electrically connected to the LED anode of the first optocoupler, the first control port is electrically connected to the LED cathode of the first optocoupler, the positive pole of the second DC input port is electrically connected to the LED anode of the second optocoupler, and the second control port is electrically connected to the LED cathode of the second optocoupler.

6. The multi-instruction function control circuit according to claim 5, characterized in that: A resistor R1 is connected in series between the positive electrode of the first DC input port and the LED anode of the first optocoupler, and a resistor R2 is connected in series between the positive electrode of the second DC input port and the LED anode of the second optocoupler.

7. The multi-instruction function control circuit according to claim 4, characterized in that: The emitter of the photodetector of the first optocoupler is electrically connected to the enable pin of the DC / DC converter, the collector of the photodetector of the first optocoupler is electrically connected to the emitter of the photodetector of the second optocoupler, and the collector of the photodetector of the second optocoupler is electrically connected to the negative electrode of the DC input port.

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