Four-redundancy travel switch self-power-on method and structure

Abstract

The invention provides a four-redundancy travel switch self-power-on method and structure, and the method employs four travel switch contacts which are connected to two ends of a power-on control signal of a satellite power supply controller in a mode that every two contacts are connected in parallel and then are connected in series. The satellite is provided with two satellite and rocket separation pressing points, each pressing point is provided with two travel switches, and travel switch contacts of the pressing points are connected in series. According to the invention, the release of any satellite-rocket separation pressing point can be ensured, the power supply controller can be triggered to be powered on autonomously, and the reliable power-on of the satellite can still be ensured when any travel switch fails.

Description

Technical Field

[0001] The invention belongs to the field of aerospace technology, and specifically relates to a method and structure for self-powering a quad-redundant travel switch, and more particularly to a method for self-powering a quad-redundant travel switch of an active segment unpowered satellite. Background Art

[0002] During the satellite launch process, the separation of the satellite and the rocket is a key step. Due to weight and space constraints, small satellites are usually powered on passively after the separation of the satellite and the rocket after launch. The traditional method of powering on satellites without active power usually relies on single or dual redundant circuit designs. These designs can work properly in most cases, but in extreme environments or when encountering unexpected failures, they may not be able to guarantee reliable power-on of the satellite.

[0003] The separation of the rocket and the satellite is one of the most critical moments in a satellite mission. Any power-on failure may lead to the failure of the entire mission. Therefore, the development of a more reliable autonomous power-on method has become a requirement for the development of satellite technology. Summary of the invention

[0004] In view of the defects in the prior art, the object of the present invention is to provide a method and structure for self-powering of quad-redundant travel switches.

[0005] A quad-redundant travel switch self-powering structure according to the present invention comprises: four pairs of travel switches;

[0006] The contacts of the four travel switches are connected in parallel in pairs and then in series to form a travel switch combination; the travel switch combination is connected to both ends of the power-on control signal of the satellite power controller; and each of the four travel switches uses a pair of contacts.

[0007] Preferably, the travel switch states are the same and match the form of the power-on control signal of the power controller.

[0008] Preferably, the travel switch states are all normally closed contacts or normally open contacts.

[0009] Preferably, the four pairs of travel switches are of the same model.

[0010] Preferably, the erroneous release of any of the four travel switches will not cause the self-powering circuit to operate.

[0011] A satellite provided according to the present invention comprises the aforementioned four-redundant travel switch self-powering structure.

[0012] Preferably, the satellite is an active-segment unpowered satellite.

[0013] Preferably, two satellite-rocket separation clamping points are provided on the satellite, and two travel switches are allocated to each clamping point; the two travel switch contacts of each satellite-rocket separation clamping point are connected in series; the release of any one of the clamping points can enable the circuit of the four-redundant travel switch self-powering structure to work.

[0014] Preferably, the connection relationship between each pair of travel switch contacts in each pressing point and the two travel switch contacts in another pressing point is one series and one parallel.

[0015] According to a quad-redundant travel switch self-powering method provided by the present invention, power-on is performed based on the quad-redundant travel switch self-powering structure.

[0016] According to a satellite power-on method provided by the present invention, power-on is performed by controlling the satellite's four redundant travel switch self-power-on structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can ensure that the release of any satellite-rocket separation compression point can trigger the power controller to power on autonomously, and when any auxiliary travel switch fails, the satellite can still be reliably powered on. In addition, while ensuring the reliable power-on of the satellite after the satellite-rocket separation, the present invention also takes into account the energy safety protection function of the active section, achieving a balance between power-on and energy conservation.

[0019] 2. The present invention can ensure that when any pair of travel switches of the active segment is released by mistake, the satellite will not be powered on, thereby protecting the energy safety of the active segment.

[0020] 3. The present invention significantly improves the reliability and response speed of satellite power-on by increasing the redundancy level and optimizing the circuit design.

[0021] 4. The present invention is particularly suitable for aerospace missions that have extremely high requirements on reliability and rapid response. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 The present invention is a schematic diagram of the structural principle of a satellite quad-redundant travel switch self-powering structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0025] Figure 1 This is a circuit connection diagram of the self-powered structure of the satellite quad redundant travel switch in the embodiment of the present invention. Figure 1 As shown, the present invention significantly improves the reliability of satellite power-on by increasing the redundancy level and optimizing the circuit design.

[0026] Specifically, the four redundant travel switch self-powering structure is suitable for the active segment unpowered satellite, including four travel switches; the four travel switches all use a pair of contacts, and the four travel switches are of the same model. In the present embodiment, the model of the travel switch is 2KX-1.

[0027] The contacts of the four pairs of travel switches are connected in parallel in pairs and then in series to form a travel switch combination. The travel switch combination is a contact series-parallel combination.

[0028] The travel switch assembly is connected to both ends of the power-on control signal of the satellite power controller;

[0029] Two satellite-rocket separation and clamping points are set on the satellite, and two travel switches are assigned to each clamping point; the two travel switch contacts of each satellite-rocket separation and clamping point are in series relationship. The satellite travel switches are distributed on the two clamping points, and two pairs of travel switches are installed at each clamping point. The two pairs of travel switch contacts of each clamping point are in series relationship, ensuring that the self-power-on circuit can work when any clamping point is released.

[0030] The travel switches are in the same state (both are normally closed contacts or normally open contacts). The selection of this state depends on the form of the power-on control signal of the power controller. In this embodiment, the signal is turned on when both ends are connected, so normally closed contacts are selected.

[0031] The connection relationship between each pair of travel switch contacts in each pressing point and two travel switch contacts in another pressing point is one series and one parallel. Figure 1 As shown in the figure, Ka1, Ka2, Kb1, and Kb2 are the four contacts of the four travel switches. Ka1 and Ka2 are located at the same satellite-rocket separation and compression point, and Kb1 and Kb2 are located at another satellite-rocket separation and compression point. This design can ensure that after the compression point is released, if one of the travel switch contacts fails, the satellite can still be reliably powered on.

[0032] The present invention also provides a method for self-powering a quad-redundant travel switch, which adopts the quad-redundant travel switch self-powering structure and comprises the following steps:

[0033] Step S1: Use a travel switch to design a self-power-on design for the satellite, wherein the design uses a total of four pairs of travel switch contacts to increase redundancy;

[0034] Step S2: connecting the contacts of the four travel switches in parallel in pairs and then in series;

[0035] Step S3: Connect the combination of four travel switches to both ends of the power-on control signal of the satellite power controller;

[0036] Step S4: two satellite-rocket separation pressing points are set on the satellite, and two travel switches are allocated to each pressing point;

[0037] Step S5: Make the two travel switch contacts of each pressing point connected in series.

[0038] The present invention will be described in more detail below.

[0039] In a preferred embodiment of the present invention, the four-redundant travel switch self-powering method is used for the active segment unpowered satellite.

[0040] In step S1, the four pairs of travel switches in the four redundant travel switch self-powering circuit all use a pair of contacts, and the four pairs of travel switches are of the same model. In this embodiment, the model of the travel switch is 2KX-1.

[0041] In step S2, the travel switches are in the same state (both are normally closed contacts or normally open contacts). The selection of this state depends on the form of the power-on control signal of the power controller. In this embodiment, the signal is turned on when both ends are connected, so normally closed contacts are selected.

[0042] In step S3, the travel switch combination is the contact series-parallel combination described in step S2.

[0043] In step S4, the satellite travel switches are distributed on two pressing points, and two pairs of travel switches are installed at each pressing point.

[0044] In step S5, the two pairs of travel switch contacts of each pressing point are connected in series to ensure that the self-powering circuit can operate when any pressing point is released.

[0045] In step S5, the connection relationship between each pair of travel switch contacts in each pressing point and two travel switch contacts in another pressing point is one series and one parallel. Figure 1As shown in the figure, Ka1, Ka2, Kb1, and Kb2 are the four contacts of the four travel switches. Ka1 and Ka2 are located at the same satellite-rocket separation and compression point, and Kb1 and Kb2 are located at another satellite-rocket separation and compression point. This design can ensure that after the compression point is released, if one of the travel switch contacts fails, the satellite can still be reliably powered on.

[0046] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A four-redundant travel switch self-powering structure, characterized in that: include: Four travel switches; The contacts of the four travel switches are connected in parallel in pairs and then in series to form a travel switch combination; the travel switch combination is connected to both ends of the power-on control signal of the satellite power controller; and each of the four travel switches uses a pair of contacts.

2. The quad-redundant travel switch self-powering structure according to claim 1 is characterized in that: The travel switch states are the same and match the form of the power-on control signal of the power controller.

3. The quad-redundant travel switch self-powering structure according to claim 2 is characterized in that: The states of the travel switches are all normally closed contacts or normally open contacts, and the models of the four travel switches are consistent.

4. The quad-redundant travel switch self-powering structure according to claim 1 is characterized in that: The erroneous release of any of the four travel switches will not cause the self-powering circuit to operate.

5. A satellite, characterized in that: It comprises the self-powering structure of four redundant travel switches as described in any one of claims 1 to 4.

6. The satellite according to claim 5, characterized in that The satellite is an active-segment non-powered satellite.

7. The satellite according to claim 5, characterized in that There are two satellite-rocket separation clamping points on the satellite, and each clamping point is assigned two travel switches; the two travel switch contacts of each satellite-rocket separation clamping point are in series relationship; the release of any clamping point can enable the circuit of the four-redundant travel switch self-powering structure to work.

8. The satellite according to claim 5, characterized in that The connection relationship between each pair of travel switch contacts in each pressing point and two travel switch contacts in another pressing point is one series and one parallel.

9. A method for self-powering a quad-redundant travel switch, characterized in that: Power-on is performed based on the self-power-on structure of the quad-redundant travel switches according to any one of claims 1 to 4.

10. A method for powering on a satellite, characterized in that: Power-on is performed by controlling the four-redundant travel switch self-power-on structure of the satellite according to any one of claims 5 to 8.

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