Three-dimensional magnetic latching relay circuit with high reliability

Abstract

The invention relates to the technical field of signal switch control protection circuits in satellites, in particular to a three-dimensional magnetic latching relay circuit with high reliability. The circuit comprises an X-direction magnetic latching relay working circuit unit, a Y-direction position magnetic latching relay working circuit unit, a Z-direction position magnetic latching relay working circuit unit and interconnection circuits among an X-direction magnetic latching relay switch contact, a Y-direction magnetic latching relay switch contact and a Z-direction magnetic latching relay switch contact. According to the invention, the defects in the prior art can be overcome, the reliability of the magnetic latching relay in an actual complex and harsh environment is improved by the whole circuit, and the long-time stable work of the circuit is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of signal switch control protection circuits in satellites, and in particular to a three-dimensional magnetic latching relay circuit with high reliability. Background Art

[0002] In the development of satellite power supply and distribution technology at home and abroad, it has become a mature technology to control the change of the load-end contacts of the magnetic latching relay through pulse signals. Compared with electromagnetic relays, the trigger signal of the magnetic latching relay is a pulse signal, which can achieve the unchanged contact state without long-term triggering. From the perspective of power consumption, it is more low-power. However, the actual working environment of the satellite is very complex and harsh. During the launch process, the satellite needs to bear vibrations of different magnitudes in all directions. A single magnetic latching relay is prone to contact failure in a certain direction for a large number of vibrations, that is, the switch contacts cannot be closed. Once the magnetic latching relay fails, the subsequent circuit cannot be controlled for the system, which may cause fatal damage.

[0003] In order to improve the reliability of the magnetic latching relay during use, thereby improving the safety of the system, it is necessary to set up additional auxiliary circuits to achieve the purpose. At present, the conventional design is to place multiple magnetic latching relays of the same model in the same position, and the contacts of the magnetic latching relays are simply connected in parallel. Although the reliability of the magnetic latching relays has been improved to a certain extent, this design method has disadvantages. First, the magnetic latching relays are located on the same plane and are subjected to the same vibration level, and the probability of failure is greatly increased; second, the response time of different relays to pulses is different, which will cause the circuit response time to be prolonged.

[0004] Therefore, how to ensure that the magnetic holding relay circuit can adapt to various complex and harsh environments and at the same time have a fast response pulse has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide a three-dimensional magnetic latching relay circuit with high reliability, which can solve the deficiencies in the prior art, improve the reliability of the magnetic latching relay in actual complex and harsh environments, and ensure that the circuit works stably for a long time.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A three-dimensional magnetic latching relay circuit with high reliability comprises: an X-direction magnetic latching relay working circuit unit, a Y-direction magnetic latching relay working circuit unit, a Z-direction magnetic latching relay working circuit unit and an interconnection circuit.

[0007] The X-direction magnetic latching relay working circuit unit is used to receive pulse signal 1 and pulse signal 2, and use pulse signal 1 and pulse signal 2 to control the contact switching of the X-direction magnetic latching relay. The X-direction magnetic latching relay is located on the X plane.

[0008] The Y-direction magnetic latching relay working circuit unit is used to receive pulse signal 1 and pulse signal 2, and use pulse signal 1 and pulse signal 2 to control the contact switching of the Y-direction magnetic latching relay. The Y-direction magnetic latching relay is located on the Y plane.

[0009] The Z-direction magnetic latching relay working circuit unit is used to receive pulse signal 1 and pulse signal 2, and use pulse signal 1 and pulse signal 2 to control the contact switching of the Z-direction magnetic latching relay. The Z-direction magnetic latching relay is located on the Z plane.

[0010] The interconnection circuit is used to realize the interconnection of the switch contacts among the X-direction magnetic latching relay, the Y-direction magnetic latching relay and the Z-direction magnetic latching relay.

[0011] As a further improvement of the above technical solution, the X-direction magnetic latching relay working circuit unit includes: an X-direction magnetic latching relay, a resistor R1, a resistor R2, a Schottky diode V1 and a Schottky diode V2; the X-direction magnetic latching relay is a magnetic latching relay K1.

[0012] The first end of the resistor R1 is connected to the positive end of the reset coil of the magnetic holding relay K1, and the negative end of the reset coil of the magnetic holding relay K1 is connected to the ground end of pulse signal two; the first end of the resistor R2 is connected to the positive end of the self-holding coil of the magnetic holding relay K1, and the negative end of the self-holding coil of the magnetic holding relay K1 is connected to the ground end of pulse signal one; the second end of the resistor R1 is connected to the positive end of pulse signal two; the second end of the resistor R2 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V1 is connected between the first end of the resistor R1 and the positive end of the reset coil of the magnetic holding relay K1, and the cathode of the Schottky diode V2 is connected between the first end of the resistor R2 and the positive end of the self-holding coil of the magnetic holding relay K1.

[0013] As a further improvement of the above technical solution, contacts 1 to 4 and contacts 2 to 6 in the magnetic latching relay K1 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts.

[0014] As a further improvement of the above technical solution, the Y-direction magnetic latching relay working circuit unit includes: a magnetic latching relay K2, a resistor R3, a resistor R4, a Schottky diode V3 and a Schottky diode V4.

[0015] The first end of the resistor R3 is connected to the positive end of the reset coil of the magnetic holding relay K2, and the negative end of the reset coil of the magnetic holding relay K2 is connected to the ground end of pulse signal two; the first end of the resistor R4 is connected to the positive end of the self-holding coil of the magnetic holding relay K2, and the negative end of the self-holding coil of the magnetic holding relay K2 is connected to the ground end of pulse signal one; the second end of the resistor R3 is connected to the positive end of pulse signal two; the second end of the resistor R4 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V3 is connected between the first end of the resistor R3 and the positive end of the reset coil of the magnetic holding relay K2, and the cathode of the Schottky diode V4 is connected between the first end of the resistor R4 and the positive end of the self-holding coil of the magnetic holding relay K2.

[0016] As a further improvement of the above technical solution, in the magnetic latching relay K2, contacts 1 to 4 and contacts 2 to 6 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts.

[0017] As a further improvement of the above technical solution, the Z-direction magnetic latching relay working circuit unit includes: a magnetic latching relay K3, a resistor R5, a resistor R6, a Schottky diode V5 and a Schottky diode V6.

[0018] The first end of the resistor R5 is connected to the positive end of the reset coil of the magnetic holding relay K3, and the negative end of the reset coil of the magnetic holding relay K3 is connected to the ground end of pulse signal two; the first end of the resistor R6 is connected to the positive end of the self-holding coil of the magnetic holding relay K3, and the negative end of the self-holding coil of the magnetic holding relay K3 is connected to the ground end of pulse signal one; the second end of the resistor R5 is connected to the positive end of pulse signal two; the second end of the resistor R6 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V5 is connected between the first end of the resistor R5 and the positive end of the reset coil of the magnetic holding relay K3, and the cathode of the Schottky diode V6 is connected between the first end of the resistor R6 and the positive end of the self-holding coil of the magnetic holding relay K3.

[0019] As a further improvement of the above technical solution, contacts 1 to 4 and contacts 2 to 6 in the magnetic latching relay K3 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts.

[0020] As a further improvement of the above technical solution, the interconnection circuit is implemented in the following manner: After contact 1 and contact 2 of the magnetic holding relay K1 are connected, they serve as circuit node A, and circuit node A is connected to contact 2 of the magnetic holding relay K2; contact 3 of the magnetic holding relay K1 is connected to contact 1 of the magnetic holding relay K2; contact 5 of the magnetic holding relay K1 is connected to contact 2 of the magnetic holding relay K3; contact 3 and contact 5 of the magnetic holding relay K3 are connected to serve as circuit node B, and circuit node B is connected to contact 3 of the magnetic holding relay K2; contact 5 of the magnetic holding relay K2 is connected to contact 1 of the magnetic holding relay K3.

[0021] As a further improvement of the above technical solution, the initial state of the circuit node A is a normally open state, and the initial state of the circuit node B is a normally open state.

[0022] As a further improvement of the above technical solution, the pulse signal 1 is loaded on both ends of the self-holding coil of each magnetic holding relay; the pulse signal 2 is loaded on both ends of the reset coil of each magnetic holding relay; the initial states of the circuit node A and the circuit node B are both normally open.

[0023] As a further improvement of the above technical solution, the magnetic holding relay K1 is located on the X plane, and the force vibrates along the X axis; the magnetic holding relay K2 is located on the Y plane, and the force vibrates along the Y axis; the magnetic holding relay K3 is located on the Z plane, and the force vibrates along the Z axis.

[0024] Compared with the prior art, the advantages of the present invention are: The three-dimensional magnetic latching relay circuit with high reliability described in the present invention can realize that when the magnetic latching relay fails on any one of the X-plane, Y-plane and Z-plane, the magnetic latching relay on the remaining two planes can continue to work, so that the conduction and disconnection of the circuit node A and the circuit node B are still controlled by the pulse signal, which effectively improves the reliability of the circuit. The present invention can make the magnetic latching relay work stably for a long time in a complex and harsh environment through pulse signal control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the circuit structure of a three-dimensional magnetic latching relay circuit with high reliability according to the present invention; Figure 2 The present invention is a schematic diagram of the structural installation of a three-dimensional magnetic latching relay circuit with high reliability. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1 A three-dimensional magnetic latching relay circuit with high reliability is shown, comprising: an X-direction magnetic latching relay working circuit unit, a Y-direction magnetic latching relay working circuit unit, a Z-direction magnetic latching relay working circuit unit, which can receive pulse signals to control contact switching, and an interconnection circuit for interconnecting the switch contacts of the X-direction, Y-direction and Z-direction magnetic latching relays. The X-direction magnetic latching relay working circuit unit, the Y-direction magnetic latching relay working circuit unit and the Z-direction magnetic latching relay working circuit unit are all used to receive pulse signals, thereby changing the state of the magnetic latching relay contacts. The three circuit units are used to enable the magnetic latching relays in the X plane, the Y plane and the Z plane to work normally after receiving pulse signal one or pulse signal two, thereby realizing free switching of the switch contacts of the magnetic latching relays. The interconnection circuit located between the switch contacts of the X-direction, Y-direction and Z-direction magnetic latching relays integrates the magnetic latching relays on the three planes into a whole. After any magnetic latching relay fails, the remaining two magnetic latching relays can realize the conduction and disconnection between the circuit node A and the circuit node B.

[0027] The working principle of each magnetic latching relay circuit unit is: The magnetic latching relay realizes its function through the internal self-holding coil and reset coil. When the two ends of the self-holding coil receive a valid pulse signal, the normally open contact of the magnetic latching relay switches to the normally closed contact, and the normally closed contact switches to the normally open contact. When the two ends of the reset coil receive a valid pulse signal, the state of the magnetic latching coil contact returns to the initial state (normally closed contact is still normally closed contact, normally open contact is still normally open contact).

[0028] The function of the interconnection circuits between the X-direction, Y-direction and Z-direction magnetic latching relay switch contacts is to fuse the magnetic latching relay switch contacts on the three planes together, so that the conduction of two nodes in the circuit can be controlled by any two magnetic latching relay contacts. When one of the relays fails, the other two relays can still work normally.

[0029] In the three-dimensional magnetic latching relay circuit with high reliability in this embodiment, when pulse 1 is valid, the contacts of each magnetic latching relay are switched, and there are three conduction paths between circuit node A and circuit node B: The first type, circuit node A→contact 1 of magnetic latching relay K1→contact 3 of magnetic latching relay K1→contact 1 of magnetic latching relay K2→contact 3 of magnetic latching relay K2→circuit node B.

[0030] The second type, circuit node A→contact 2 of magnetic latching relay K1→contact 5 of magnetic latching relay K1→contact 2 of magnetic latching relay K3→contact 5 of magnetic latching relay K3→circuit node B.

[0031] The third type, circuit node A → contact 2 of magnetic latching relay K2 → contact 5 of magnetic latching relay K2 → contact 1 of magnetic latching relay K3 → contact 3 of magnetic latching relay K3 → circuit node B.

[0032] Among them, if the magnetic latching relay K3 fails, the first conduction path can realize the connection between circuit node A and circuit node B; if the magnetic latching relay K2 fails, the second conduction path can realize the connection between circuit node A and circuit node B; if the magnetic latching relay K1 fails, the third conduction path can realize the connection between circuit node A and circuit node B; without the failure of the magnetic latching relay, any conduction path can realize the connection between circuit node A and circuit node B.

[0033] In the three-dimensional magnetic latching relay circuit with high reliability in this embodiment, when pulse two is valid based on the validity of pulse one, the contacts of each magnetic latching relay return to the initial state, so the three conduction paths discussed above do not exist, and circuit node A and circuit node B are disconnected.

[0034] Among them, if the magnetic latching relay K3 fails, the contact of K3 cannot be restored to the initial state. Since the magnetic latching relay K3 and K1 are in series in the second conduction path, the contact of K1 is restored to the initial state normally, so the second path is disconnected. The magnetic latching relay K3 and K2 are also in series in the third conduction path. The contact of K2 is restored to the initial state normally, so the third path is also disconnected. Similarly, the first path is also disconnected because the magnetic latching relays K1 and K2 are restored to the initial state normally. After the magnetic latching relay K2 or K1 fails, all three paths are disconnected.

[0035] The three-dimensional magnetic latching relay circuit with high reliability described in the present invention realizes that when the magnetic latching relay fails abnormally on any plane, the remaining two magnetic latching relays can realize the conduction and disconnection of any two points in the circuit according to pulse signal 1 and pulse signal 2. The present invention forms a group of any two magnetic latching relays, which are divided into three groups in total. The contacts of the two relays in each group of relays are in a series state, and each relay appears in any two groups. Such a design improves the response speed and reliability of the entire magnetic latching relay to pulses.

[0036] As a further improvement of the above technical solution, the X-direction magnetic latching relay working circuit unit includes: a resistor R1, a resistor R2, a Schottky diode V1, a Schottky diode V2 and a magnetic latching relay K1.

[0037] The first end of the resistor R1 is connected to the positive end of the reset coil of the magnetic holding relay K1, and the negative end of the reset coil of the magnetic holding relay K1 is connected to the ground end of the pulse signal two; the first end of the resistor R2 is connected to the positive end of the self-holding coil of the magnetic holding relay K1, and the negative end of the self-holding coil of the magnetic holding relay K1 is connected to the ground end of the pulse signal one; the second end of the resistor R1 is connected to the positive end of the pulse signal two; the second end of the resistor R2 is connected to the positive end of the pulse signal one; the cathode of the Schottky diode V1 is connected between the first end of the resistor R1 and the positive end of the reset coil of the magnetic holding relay K1, and the cathode of the Schottky diode V2 is connected between the first end of the resistor R2 and the positive end of the self-holding coil of the magnetic holding relay K1.

[0038] In the X-direction magnetic latching relay working circuit unit, resistor R1 plays a current limiting role to ensure the safety of the reset coil of the magnetic latching relay K1; resistor R2 plays a current limiting role to ensure the safety of the self-holding coil of the magnetic latching relay K1; after the second pulse signal is disconnected, a back electromotive force will be formed at both ends of the reset coil of the magnetic latching relay K1, and the Schottky diode V2 provides a channel for current flow; the Schottky diode V1 provides a channel for the back electromotive force of the self-holding coil of the magnetic latching relay K1 to flow.

[0039] As a further improvement of the above technical solution, the Y-direction magnetic latching relay working circuit unit includes: a resistor R3, a resistor R4, a Schottky diode V3, a Schottky diode V4 and a magnetic latching relay K2.

[0040] The first end of the resistor R3 is connected to the positive end of the reset coil of the magnetic holding relay K2, and the negative end of the reset coil of the magnetic holding relay K2 is connected to the ground end of the pulse signal two; the first end of the resistor R4 is connected to the positive end of the self-holding coil of the magnetic holding relay K2, and the negative end of the self-holding coil of the magnetic holding relay K2 is connected to the ground end of the pulse signal one; the second end of the resistor R3 is connected to the positive end of the pulse signal two; the second end of the resistor R4 is connected to the positive end of the pulse signal one; the cathode of the Schottky diode V3 is connected between the first end of the resistor R3 and the positive end of the reset coil of the magnetic holding relay K2, and the cathode of the Schottky diode V4 is connected between the first end of the resistor R4 and the positive end of the self-holding coil of the magnetic holding relay K2.

[0041] In the Y-direction magnetic latching relay working circuit unit, resistor R3 plays a role of current limiting to ensure the safety of the reset coil of the magnetic latching relay K2; resistor R4 plays a role of current limiting to ensure the safety of the self-holding coil of the magnetic latching relay K2; after the second pulse signal is disconnected, a back electromotive force will be formed at both ends of the reset coil of the magnetic latching relay K2, and the Schottky diode V3 provides a channel for current flow; the Schottky diode V4 provides a channel for the back electromotive force of the self-holding coil of the magnetic latching relay K2 to flow.

[0042] As a further improvement of the above technical solution, the Z-direction magnetic latching relay working circuit unit includes: a resistor R5, a resistor R6, a Schottky diode V5, a Schottky diode V6 and a magnetic latching relay K3.

[0043] The first end of the resistor R5 is connected to the positive end of the reset coil of the magnetic holding relay K3, and the negative end of the reset coil of the magnetic holding relay K3 is connected to the ground end of the pulse signal two; the first end of the resistor R6 is connected to the positive end of the self-holding coil of the magnetic holding relay K3, and the negative end of the self-holding coil of the magnetic holding relay K3 is connected to the ground end of the pulse signal one; the second end of the resistor R5 is connected to the positive end of the pulse signal two; the second end of the resistor R6 is connected to the positive end of the pulse signal one; the cathode of the Schottky diode V5 is connected between the first end of the resistor R5 and the positive end of the reset coil of the magnetic holding relay K3, and the cathode of the Schottky diode V6 is connected between the first end of the resistor R6 and the positive end of the self-holding coil of the magnetic holding relay K3.

[0044] In the Z-direction magnetic latching relay working circuit unit, resistor R5 plays a role of current limiting to ensure the safety of the reset coil of the magnetic latching relay K3; resistor R6 plays a role of current limiting to ensure the safety of the self-holding coil of the magnetic latching relay K3; after the second pulse signal is disconnected, a back electromotive force will be formed at both ends of the reset coil of the magnetic latching relay K3, and the Schottky diode V5 provides a channel for current flow; the Schottky diode V6 provides a channel for the back electromotive force of the self-holding coil of the magnetic latching relay K3 to flow.

[0045] As a further improvement of the above technical solution, the interconnection circuit located between the switch contacts of the magnetic latching relays in the X-direction, Y-direction and Z-direction includes: contacts one and two of the magnetic latching relay K1, circuit node A and contact two of the magnetic latching relay K2 are connected; contact three of the magnetic latching relay K1 is connected to contact one of the magnetic latching relay K2; contact five of the magnetic latching relay K1 is connected to contact two of the magnetic latching relay K3; contact three of the magnetic latching relay K2, circuit node B and contacts three and five of the magnetic latching relay K3 are connected; contact five of the magnetic latching relay K2 is connected to contact one of the magnetic latching relay K3.

[0046] As a further improvement of the above technical solution, in the magnetic holding relay K1, contacts 1 to 4 and contacts 2 to 6 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts; in the magnetic holding relay K2, contacts 1 to 4 and contacts 2 to 6 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts; in the magnetic holding relay K3, contacts 1 to 4 and contacts 2 to 6 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts.

[0047] As a further improvement of the above technical solution, Figure 2 As shown, the magnetic holding relay K1 that can receive pulse signals in the X direction to control the contact switching is located on the X plane, and the force vibrates along the X axis; the magnetic holding relay K2 that can receive pulse signals in the Y direction to control the contact switching is located on the Y plane, and the force vibrates along the Y axis; the magnetic holding relay K3 that can receive pulse signals in the Z direction to control the contact switching is located on the Z plane, and the force vibrates along the Z axis.

[0048] The innovative point of the three-dimensional magnetic latching relay circuit with high reliability described in the present invention is reflected in the reliability of the circuit. When the magnetic latching relay fails, it can still realize the conduction and disconnection between any nodes of the circuit. The traditional approach is to use multiple magnetic latching relays in parallel, that is, the parallel relationship between the contacts. The actions of each magnetic latching relay are unified, either the contacts are converted or the contacts are restored to the initial state. When the contacts are converted, even if one relay fails, the normal conversion of the contacts of other relays can ensure the conduction of any node of the circuit. However, when the contacts are restored to the initial state, if one relay fails and the contact cannot be restored to the initial state, it will cause the circuit to be unable to disconnect between the two nodes. The innovative point of the present invention is to select three magnetic latching relays, which are placed on three planes, namely the X plane, the Y plane and the Z plane. In practice, the force vibration magnitude of the object on each plane is different, and the large magnitude often only appears on one plane, which is more likely to cause the magnetic latching relay to fail. Now, a magnetic latching relay is placed on each of the three planes, and the probability of the three magnetic latching relays failing at the same time is greatly reduced. Every two magnetic latching relays form a group, and the contacts of the magnetic latching relays are in a series relationship. According to this arrangement relationship, any magnetic latching relay will appear in any two groups. When the contacts are switched, if one magnetic latching relay fails, the remaining group that does not contain the relay can achieve conduction of any node in the circuit. When the contacts are restored to the initial state, if one relay fails and the contact cannot be restored to the initial state, since the two relay contacts in each group are in a series relationship, the two nodes of the circuit will also be disconnected. Through the above design, the reliability of the magnetic latching relay circuit is improved.

[0049] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the scope of protection determined by the claims of the present invention.

Claims

1. A three-dimensional magnetic latching relay circuit with high reliability, characterized in that: The circuit comprises: an X-direction magnetic latching relay working circuit unit, a Y-direction magnetic latching relay working circuit unit, a Z-direction magnetic latching relay working circuit unit and an interconnection circuit; The X-direction magnetic latching relay working circuit unit is used to receive pulse signal one and pulse signal two, and use pulse signal one and pulse signal two to control the contact switching of the X-direction magnetic latching relay; the X-direction magnetic latching relay is located on the X plane; The Y-direction magnetic latching relay working circuit unit is used to receive pulse signal one and pulse signal two, and use pulse signal one and pulse signal two to control the contact switching of the Y-direction magnetic latching relay; the Y-direction magnetic latching device is located on the Y plane; The Z-direction magnetic latching relay working circuit unit is used to receive pulse signal one and pulse signal two, and use pulse signal one and pulse signal two to control the contact switching of the Z-direction magnetic latching relay; the Z-direction magnetic latching device is located on the Z plane; The interconnection circuit is used to realize the interconnection of the switch contacts among the X-direction magnetic latching relay, the Y-direction magnetic latching relay and the Z-direction magnetic latching relay.

2. The three-dimensional magnetic latching relay circuit with high reliability according to claim 1, characterized in that: The X-direction magnetic latching relay working circuit unit comprises: an X-direction magnetic latching relay, a resistor R1, a resistor R2, a Schottky diode V1 and a Schottky diode V2; the X-direction magnetic latching relay is a magnetic latching relay K1; The first end of the resistor R1 is connected to the positive end of the reset coil of the magnetic holding relay K1, and the negative end of the reset coil of the magnetic holding relay K1 is connected to the ground end of pulse signal two; the first end of the resistor R2 is connected to the positive end of the self-holding coil of the magnetic holding relay K1, and the negative end of the self-holding coil of the magnetic holding relay K1 is connected to the ground end of pulse signal one; the second end of the resistor R1 is connected to the positive end of pulse signal two; the second end of the resistor R2 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V1 is connected between the first end of the resistor R1 and the positive end of the reset coil of the magnetic holding relay K1, and the cathode of the Schottky diode V2 is connected between the first end of the resistor R2 and the positive end of the self-holding coil of the magnetic holding relay K1.

3. The three-dimensional magnetic latching relay circuit with high reliability according to claim 2, characterized in that: Contacts 1 to 4 and contacts 2 to 6 in the magnetic latching relay K1 are normally closed contacts, and contacts 1 to 3 and contacts 2 to 5 are normally open contacts.

4. The three-dimensional magnetic latching relay circuit with high reliability according to claim 1, characterized in that: The Y-direction magnetic latching relay working circuit unit includes: a magnetic latching relay K2, a resistor R3, a resistor R4, a Schottky diode V3 and a Schottky diode V4; The first end of the resistor R3 is connected to the positive end of the reset coil of the magnetic holding relay K2, and the negative end of the reset coil of the magnetic holding relay K2 is connected to the ground end of pulse signal two; the first end of the resistor R4 is connected to the positive end of the self-holding coil of the magnetic holding relay K2, and the negative end of the self-holding coil of the magnetic holding relay K2 is connected to the ground end of pulse signal one; the second end of the resistor R3 is connected to the positive end of pulse signal two; the second end of the resistor R4 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V3 is connected between the first end of the resistor R3 and the positive end of the reset coil of the magnetic holding relay K2, and the cathode of the Schottky diode V4 is connected between the first end of the resistor R4 and the positive end of the self-holding coil of the magnetic holding relay K2.

5. The three-dimensional magnetic latching relay circuit with high reliability according to claim 4, characterized in that: In the magnetic latching relay K2, contact 1 to contact 4 and contact 2 to contact 6 are normally closed contacts, and contact 1 to contact 3 and contact 2 to contact 5 are normally open contacts.

6. The three-dimensional magnetic latching relay circuit with high reliability according to claim 1, characterized in that: The Z-direction magnetic latching relay working circuit unit includes: a magnetic latching relay K3, a resistor R5, a resistor R6, a Schottky diode V5 and a Schottky diode V6; The first end of the resistor R5 is connected to the positive end of the reset coil of the magnetic holding relay K3, and the negative end of the reset coil of the magnetic holding relay K3 is connected to the ground end of pulse signal two; the first end of the resistor R6 is connected to the positive end of the self-holding coil of the magnetic holding relay K3, and the negative end of the self-holding coil of the magnetic holding relay K3 is connected to the ground end of pulse signal one; the second end of the resistor R5 is connected to the positive end of pulse signal two; the second end of the resistor R6 is connected to the positive end of pulse signal one; the cathode of the Schottky diode V5 is connected between the first end of the resistor R5 and the positive end of the reset coil of the magnetic holding relay K3, and the cathode of the Schottky diode V6 is connected between the first end of the resistor R6 and the positive end of the self-holding coil of the magnetic holding relay K3.

7. The three-dimensional magnetic latching relay circuit with high reliability according to claim 6, characterized in that: Contacts 1 to 4 and contacts 2 to 6 in the magnetic latching relay K3 are normally closed contacts, and contact 1 to 3 and contacts 2 to 5 are normally open contacts.

8. The three-dimensional magnetic latching relay circuit with high reliability according to claim 1, characterized in that: The interconnection circuit is implemented in the following manner: The contact 1 and the contact 2 of the magnetic latching relay K1 are connected to form a circuit node A, and the circuit node A is connected to the contact 2 of the magnetic latching relay K2; the contact 3 of the magnetic latching relay K1 is connected to the contact 1 of the magnetic latching relay K2; The contact point 5 of the magnetic latching relay K1 is connected to the contact point 2 of the magnetic latching relay K3; Contacts 3 and 5 of the magnetic latching relay K3 are connected to form a circuit node B, and the circuit node B is connected to contact 3 of the magnetic latching relay K2; contact 5 of the magnetic latching relay K2 is connected to contact 1 of the magnetic latching relay K3.

9. The three-dimensional magnetic latching relay circuit with high reliability according to claim 8, characterized in that: The pulse signal 1 is loaded on both ends of the self-holding coil of each magnetic holding relay; the pulse signal 2 is loaded on both ends of the reset coil of each magnetic holding relay; the initial states of the circuit node A and the circuit node B are both normally open.

10. The three-dimensional magnetic latching relay circuit with high reliability according to claim 1, characterized in that: The magnetic latching relay K1 is located on the X plane, and the force vibrates along the X axis; the magnetic latching relay K2 is located on the Y plane, and the force vibrates along the Y axis; the magnetic latching relay K3 is located on the Z plane, and the force vibrates along the Z axis.

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