A Quantum Voltage Room Temperature Side Wiring Control Method and Device

Abstract

The present invention discloses a quantum voltage room temperature side wiring control method and device. In the present invention, after the first inductor is connected in parallel with the first relay, it is connected in series between the positive electrode of the quantum voltage input and the positive electrode of the quantum voltage output; after the second inductor is connected in parallel with the second relay, it is connected in series between the negative electrode of the quantum voltage input and the negative electrode of the quantum voltage output; the third relay is connected in series between the positive electrode of the input of the voltage measuring device and the positive electrode of the quantum voltage output; the fourth relay is connected in series between the negative electrode of the input of the voltage measuring device and the negative electrode of the quantum voltage output; the fifth relay is connected in series between the positive electrode of the quantum voltage output and the negative electrode of the quantum voltage output. By optimizing the on-off state of the relay group, the present invention reduces the frequency of manual wiring during the application of quantum voltage, and uses the principle of the inductor to suppress current changes and the short-circuit protection principle to suppress the risk of flux freezing and damage of the Josephson junction array caused by static electricity, external transient impact signals, etc.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit design, and specifically relates to a quantum voltage room-temperature side wiring control method and device. Background Art

[0002] The quantum voltage synthesized based on the Josephson junction array device has extremely high accuracy and stability, and is often used as the national DC voltage measurement standard internationally. The Josephson junction array device operates in a low-temperature environment, and the quantum voltage at its end is connected to the room-temperature wiring terminal through a lead.

[0003] During the operation of the quantum voltage system, it is necessary to frequently connect the room-temperature wiring terminal of the quantum voltage to different test systems, including a self-diagnosis system for checking whether the junction array still effectively operates in the superconducting quantum state, and other external application systems that require a quantum voltage reference.

[0004] During the frequent wiring process, static electricity carried by the human body, transient impact signals in the external application system, etc. may be transmitted along the cable to the Josephson junction array. In the light case, it will cause the Josephson junction array to undergo a flux freezing phenomenon and lose the superconducting quantum state. In the severe case, it will cause irreversible damage to the expensive junction array device. Summary of the Invention

[0005] In order to reduce the influence of static electricity, external transient impact signals, etc. on the Josephson junction array, the present invention provides a quantum voltage room-temperature side wiring control method and device.

[0006] One aspect of the present invention provides a quantum voltage room-temperature side wiring control device, including a first inductor, a second inductor, a first relay, and a second relay;

[0007] The first inductor is connected in parallel with the first relay to form a first signal suppression unit; the first signal suppression unit is connected in series between the positive input terminal of the quantum voltage and the positive output terminal of the quantum voltage;

[0008] The second inductor is connected in parallel with the second relay to form a second signal suppression unit; the second signal suppression unit is connected in series between the negative input terminal of the quantum voltage and the negative output terminal of the quantum voltage.

[0009] Furthermore, it further includes a third relay and a fourth relay; the third relay is connected in series between the positive input terminal of an external voltage measurement device and the positive output terminal of the quantum voltage; the fourth relay is connected in series between the negative input terminal of the voltage measurement device and the negative output terminal of the quantum voltage.

[0010] Furthermore, it further includes a fifth relay, and the fifth relay is connected in series between the positive output terminal of the quantum voltage and the negative output terminal of the quantum voltage.

[0011] Another aspect of the present invention provides a quantum voltage room temperature side wiring control method:

[0012] When outputting a DC quantum voltage, the first relay and the second relay remain in the open state; when outputting an AC quantum voltage, the first relay and the second relay remain in the closed state.

[0013] When it is necessary to use a voltage measuring device to check whether the quantum voltage is in a normal working state, the third relay and the fourth relay are closed simultaneously; otherwise, the third relay and the fourth relay both remain in the open state.

[0014] When it is necessary to connect the positive output of the quantum voltage and the negative output of the quantum voltage to an external application system, the fifth relay remains in the closed state; otherwise, the fifth relay remains in the open state.

[0015] Advantages of the present invention: By optimizing the opening and closing states of the relay group, the present invention reduces the frequency of manual wiring during the application of quantum voltage, and uses the principle of inductance to suppress current changes and the short-circuit protection principle to suppress the risk of flux freezing and damage of Josephson junction arrays caused by static electricity, external transient impact signals, etc., improving the stability and safety of the quantum voltage system. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is Figure 1 a schematic diagram of a deformed structure of

[0018] Figure 3 is Figure 1 a schematic diagram of an embodiment of Detailed Embodiments

[0019] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the drawings. The attached drawings are for reference and illustration only, and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, sufficient understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner.

[0020] As Figure 1 shown, a quantum voltage room temperature side wiring control device includes a first inductor 2, a second inductor 14, a first relay 3, and a second relay 13.

[0021] After the first inductor 2 is connected in parallel with the switch contacts of the first relay 3 (constituting the first signal suppression unit), it is connected in series between the positive electrode 1 of the quantum voltage input and the positive electrode 8 of the quantum voltage output; after the second inductor 14 is connected in parallel with the switch contacts of the second relay 13 (constituting the second signal suppression unit), it is connected in series between the negative electrode 15 of the quantum voltage input and the negative electrode 9 of the quantum voltage output.

[0022] In an embodiment of the present application, it may further include a third relay 4 and a fourth relay 6; the switch contacts of the third relay 4 are connected in series between the positive input of the voltage measuring device 5 and the positive electrode 8 of the quantum voltage output; the switch contacts of the fourth relay 6 are connected in series between the negative input of the voltage measuring device 5 and the negative electrode 9 of the quantum voltage output.

[0023] In an embodiment of the present application, it may further include a fifth relay 6, and the switch contacts of the fifth relay 7 are connected in series between the positive electrode 8 of the quantum voltage output and the negative electrode 9 of the quantum voltage output.

[0024] The control pins of the first to fifth relays are all connected to the relay drive circuit 10; the relay action control instructions issued by the controller 12 reach the relay drive circuit 10 through the isolation circuit 11.

[0025] As a preferred example, the relay may be a normally open type, normally closed type, or transfer type ordinary electromagnetic relay or a magnetic latching relay.

[0026] As a preferred example, the first relay 3 and the second relay 13 act synchronously and maintain the same switch logic; the third relay 4 and the fourth relay 6 act synchronously and maintain the same switch logic.

[0027] As Figure 2 shown, in a variant of the present application, the first relay 3 and the second relay 13 may be combined into the same double - pole relay 16; the third relay 4 and the fourth relay 6 may be combined into the same double - pole relay 17.

[0028] The present application also provides a quantum voltage room - temperature side wiring control method:

[0029] When outputting a direct - current quantum voltage, the switch contacts of the first relay 3 and the second relay 13 both remain in the open state;

[0030] When outputting an alternating - current quantum voltage, the switch contacts of the first relay 3 and the second relay 13 simultaneously remain in the closed state.

[0031] When it is necessary to use the voltage measuring device 5 to check whether the quantum voltage is in a normal operating state, the switch contacts of the third relay 4 and the fourth relay 6 are closed simultaneously; under other conditions, the switch contacts of the third relay 4 and the fourth relay 6 remain open.

[0032] When it is necessary to connect the positive quantum voltage output terminal 8 and the negative quantum voltage output terminal 9 to an external application system, the switch contact of the fifth relay 7 remains closed. Under other conditions, the switch contact of the fifth relay 7 remains open.

[0033] In another embodiment of the present application, as Figure 3 shown, a first inductor is connected in series between the positive quantum voltage input terminal and the positive output terminal, and a second inductor is connected in series between the negative quantum voltage input terminal and the negative output terminal. A first relay and a second relay are respectively connected in parallel across the two ends of the first inductor and the second inductor. According to electromagnetic knowledge, an inductor has the function of suppressing current changes. Therefore, when the switch contacts of the first relay and the second relay are open, the first inductor and the second inductor can suppress the influence of static electricity, external transient impact signals, etc. on the Josephson junction array. It should be noted that when an alternating quantum voltage needs to be output, to maintain its transient edge characteristics, the switch contacts of the first relay and the second relay need to remain closed to short-circuit the first inductor and the second inductor.

[0034] Further, a third relay is connected in series between the positive quantum voltage output terminal and the positive voltage measuring device terminal, and a fourth relay is connected in series between the negative quantum voltage output terminal and the negative voltage measuring device terminal. The two relays operate synchronously. During the application of the quantum voltage, it is necessary to regularly connect the quantum voltage to the voltage measuring device in the self-diagnosis system to check whether the Josephson junction array is still in a normal operating state. If manual wire replacement is used, it will increase the risk of static electricity carried by the human body affecting the Josephson junction array. When the third relay and the fourth relay are used to achieve automatic opening and closing, this risk can be significantly reduced.

[0035] Further, a fifth relay is connected in series between the positive quantum voltage output terminal and the negative quantum voltage output terminal. When manually connecting the quantum voltage output terminal to an external application system, keep the switch contact of the fifth relay closed. At this time, static electricity, external transient impact signals, etc. will be conducted through the fifth relay and then directly return to the source, without further affecting the Josephson junction array along the wire. It should be noted that when the quantum voltage is output, the switch contact of the fifth relay must be kept open.

[0036] In this application, specific examples are used to illustrate the principles and implementation manners of the present invention. The descriptions of the above embodiments are only for helping to understand the method and its core idea of the present invention; meanwhile, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A quantum voltage room temperature side wiring control device, comprising a first inductor (2), a second inductor (14), a first relay (3) and a second relay (13); characterized in that: The first inductor (2) is connected in parallel with the first relay (3) to form a first signal suppression unit; the first signal suppression unit is connected in series between the positive electrode of the quantum voltage input (1) and the positive electrode of the quantum voltage output (8); The second inductor (14) is connected in parallel with the second relay (13) to form a second signal suppression unit; the second signal suppression unit is connected in series between the negative electrode of the quantum voltage input (15) and the negative electrode of the quantum voltage output (9); Specifically: a first inductor is connected in series between the positive electrode of the quantum voltage input and the positive electrode of the output, and a second inductor is connected in series between the negative electrode of the quantum voltage input and the negative electrode of the output. The first inductor and the second inductor are respectively connected in parallel with a first relay and a second relay at both ends; when the switch contacts of the first relay and the second relay are disconnected, the first inductor and the second inductor can suppress the influence of static electricity and external transient impact signals on the Josephson junction array; when an alternating quantum voltage needs to be output, to maintain its transient edge characteristics, the switch contacts of the first relay and the second relay remain closed to short-circuit the first inductor and the second inductor.

2. The quantum voltage room temperature side wiring control device according to claim 1, wherein: It further includes a third relay (4) and a fourth relay (6); the third relay (4) is connected in series between the positive electrode of the input of an external voltage measuring device (5) and the positive electrode of the quantum voltage output (8); the fourth relay (6) is connected in series between the negative electrode of the input of the voltage measuring device (5) and the negative electrode of the quantum voltage output (9).

3. A quantum voltage room temperature side wiring control device according to claim 1 or 2, characterized in that: It further includes a fifth relay (7), and the fifth relay (7) is connected in series between the positive electrode of the quantum voltage output (8) and the negative electrode of the quantum voltage output (9).

4. The quantum voltage room temperature side wiring control device according to claim 3, characterized in that: The control pins of the first relay (3), the second relay (13), the third relay (4), the fourth relay (6) and the fifth relay (7) are all connected to a relay drive circuit (10); the relay action control instructions issued by the controller (12) reach the relay drive circuit (10) through an isolation circuit (11).

5. A quantum voltage room temperature side wiring control device according to claim 1, characterized in that: The relay is an electromagnetic relay and / or a magnetic latching relay of normally open type, normally closed type or conversion type.

6. The quantum voltage room temperature side wiring device according to claim 2, characterized in that: The first relay (3) and the second relay (13) act synchronously and maintain the same switching logic; the third relay (4) and the fourth relay (6) act synchronously and maintain the same switching logic.

7. The quantum voltage room temperature side wiring control device according to claim 6, characterized in that: The first relay (3) and the second relay (13) are realized by a first identical double-pole relay (16); the third relay (4) and the fourth relay (6) are realized by a second identical double-pole relay (17).

8. A quantum voltage room temperature side wiring control method, using the device described in claim 1, characterized in that: When a direct current quantum voltage is output, the first relay (3) and the second relay (13) remain in the off state; when an alternating current quantum voltage is output, the first relay (3) and the second relay (13) remain in the on state.

9. A quantum voltage room temperature side wiring control method, using the device described in claim 2, characterized in that: When it is necessary to use the voltage measuring device (5) to check whether the quantum voltage is in a normal working state, the third relay (4) and the fourth relay (6) are closed simultaneously; otherwise, both the third relay (4) and the fourth relay (6) remain in the open state.

10. A quantum voltage room temperature side wiring control method, using the device described in claim 3, characterized in that: When it is necessary to connect the positive output terminal (8) and the negative output terminal (9) of the quantum voltage to an external application system, the fifth relay (7) remains closed; otherwise, the fifth relay (7) remains open.

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