Satellite-ground communication arbitration circuit and system

Abstract

The utility model provides a satellite-ground communication arbitration circuit. The satellite-ground communication arbitration circuit comprises an appointed on-duty pulse signal merging module and an arbitration input pulse signal merging module, the appointed on-duty pulse signal merging module is used for merging a plurality of on-duty pulse signals, and the arbitration input pulse signal merging module is used for receiving the merged on-duty pulse signals; the designated on-duty pulse signal merging module is composed of a logic gate chip two-input OR gate and a phase inverter, and the arbitration input pulse signal merging module adopts the logic gate chip two-input OR gate. The satellite-ground communication arbitration circuit is simple and reliable in structure.

Description

Technical Field

[0001] The utility model relates to the field of space technology, and in particular to a satellite-to-ground communication arbitration circuit and system. Background Art

[0002] In the field of space technology, satellite-to-ground communication arbitration circuits are used in an environment with multiple core processing modules to arbitrate and determine which core processing module to work. The currently used satellite-to-ground communication arbitration circuits are relatively complex, and their reliability needs to be further improved.

[0003] In view of this, there is an urgent need to design a satellite-to-earth communication arbitration circuit and system with a simple circuit layout and reliability. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a satellite-to-earth communication arbitration circuit and system.

[0005] The utility model provides a satellite-to-ground communication arbitration circuit, comprising a designated on-duty pulse signal merging module and an arbitration input pulse signal merging module; the designated on-duty pulse signal merging module is used to merge multiple on-duty pulse signals, and the arbitration input pulse signal merging module is used to receive the merged on-duty pulse signal; the designated on-duty pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter, and the arbitration input pulse signal merging module adopts a logic gate chip two-input OR gate.

[0006] According to one embodiment of the utility model, the satellite-to-ground communication arbitration circuit also includes an automatic cutting pulse signal merging module and a duty signal flip pulse control module. The automatic cutting pulse signal merging module is used to merge multiple cutting pulse signals, and the duty signal flip pulse control module is used to flip the merged cutting pulse signal to obtain a first flip signal, and transmit the first flip signal to the arbitration input pulse signal merging module.

[0007] According to an embodiment of the utility model, the automatic machine cutting pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

[0008] According to an embodiment of the utility model, the on-duty signal flip pulse control module is composed of a logic gate chip two-input AND gate, an inverter and a digital switch chip.

[0009] According to one embodiment of the utility model, the satellite-to-ground communication arbitration circuit also includes a fault pulse signal merging module, which is used to merge multiple machine cutting fault signals, and the on-duty signal flip pulse control module is used to flip the merged machine cutting pulse signal and the merged machine cutting fault signal to obtain a second flip signal, and transmit the second flip signal to the arbitration input pulse signal merging module.

[0010] According to an embodiment of the utility model, the fault pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

[0011] According to an embodiment of the utility model, the satellite-to-ground communication arbitration circuit further includes an automatic machine cutting switch signal latch module, and the automatic machine cutting switch signal latch module is arranged between the automatic machine cutting pulse signal merging module and the on-duty signal flip pulse control module.

[0012] According to an embodiment of the utility model, the satellite-to-earth communication arbitration circuit further includes an arbitration result signal latch module, and the arbitration result signal latch module is arranged after the arbitration input pulse signal merging module.

[0013] According to an embodiment of the present utility model, the automatic machine cut-off switch signal latch module and the arbitration result signal latch module adopt any one of logic gate chips RS or JK or D flip-flop or latch.

[0014] According to one embodiment of the utility model, it includes the satellite-to-ground communication arbitration circuit as described above.

[0015] The satellite-to-earth communication arbitration circuit of the present application performs signal arbitration by setting up a designated on-duty pulse signal merging module and an arbitration input pulse signal merging module. It can merge multiple on-duty pulse signals through the on-duty pulse signal merging module to ensure the accuracy of the on-duty pulse signals. The arbitration input pulse signal merging module receives the merged on-duty pulse signals and designates the corresponding core processing module to perform on-duty work. The arbitration circuit is simple and reliable.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a schematic diagram of a satellite-to-earth communication arbitration circuit according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of a satellite-to-earth communication arbitration circuit according to another embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a satellite-to-earth communication arbitration system according to an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0022] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0023] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0024] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limiting. Similar terms represent similar elements throughout the description.

[0025] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0026] Figure 1 It is a schematic diagram of a satellite-to-earth communication arbitration circuit according to an embodiment of the utility model; Figure 2 is a schematic diagram of a satellite-to-earth communication arbitration circuit according to another embodiment of the utility model; Figure 3 It is a schematic diagram of a satellite-to-earth communication arbitration system according to an embodiment of the utility model.

[0027] like Figure 1 As shown, the utility model provides a satellite-to-ground communication arbitration circuit, including a designated on-duty pulse signal merging module and an arbitration input pulse signal merging module; the designated on-duty pulse signal merging module is used to merge multiple on-duty pulse signals, and the arbitration input pulse signal merging module is used to receive the merged on-duty pulse signal; the designated on-duty pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter, and the arbitration input pulse signal merging module adopts a logic gate chip two-input OR gate.

[0028] Specifically, the satellite-to-earth communication arbitration circuit of the present application performs signal arbitration by setting a designated duty pulse signal merging module and an arbitration input pulse signal merging module. The arbitration circuit is simple and reliable, and can merge multiple duty pulse signals through the duty pulse signal merging module to ensure the accuracy of the duty pulse signal. The merged duty pulse signal is received through the arbitration input pulse signal merging module and the corresponding core processing module is designated to perform the duty work. Since each module adopts a conventional logic gate circuit, the use environment requirements of the product can be met by replacing logic gate components of different levels, such as the environment in the aerospace field. The use of conventional logic gate circuits also has the characteristics of low power consumption, and the determination of external drive capability can be realized according to different selections of logic gate circuits.

[0029] like Figure 2As shown, according to one embodiment of the utility model, the satellite-to-ground communication arbitration circuit also includes an automatic cutting pulse signal merging module and a duty signal flip pulse control module. The automatic cutting pulse signal merging module is used to merge multiple cutting pulse signals, and the duty signal flip pulse control module is used to flip the merged cutting pulse signal to obtain a first flip signal, and transmit the first flip signal to the arbitration input pulse signal merging module.

[0030] According to an embodiment of the utility model, the automatic machine cutting pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

[0031] According to an embodiment of the utility model, the on-duty signal flip pulse control module is composed of a logic gate chip two-input AND gate, an inverter and a digital switch chip.

[0032] According to one embodiment of the utility model, the satellite-to-ground communication arbitration circuit also includes a fault pulse signal merging module, which is used to merge multiple machine cutting fault signals. The on-duty signal flip pulse control module is used to flip the merged machine cutting pulse signal and the merged machine cutting fault signal to obtain a second flip signal, and transmit the second flip signal to the arbitration input pulse signal merging module.

[0033] According to an embodiment of the utility model, the fault pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

[0034] According to an embodiment of the utility model, the satellite-to-ground communication arbitration circuit further includes an automatic machine cutting switch signal latch module, which is arranged between the automatic machine cutting pulse signal merging module and the on-duty signal flip pulse control module.

[0035] According to an embodiment of the utility model, the satellite-to-ground communication arbitration circuit further includes an arbitration result signal latch module, and the arbitration result signal latch module is arranged after the arbitration input pulse signal merging module.

[0036] According to an embodiment of the utility model, the automatic machine switch signal latch module and the arbitration result signal latch module adopt any one of logic gate chips RS or JK or D flip-flop or latch.

[0037] According to an embodiment of the utility model, the satellite-to-ground communication arbitration circuit mentioned above is included.

[0038] In one embodiment, each module of the satellite-to-ground communication arbitration circuit uses a logic gate chip, wherein the designated duty pulse signal merging module, the automatic machine cutting pulse signal merging module and the fault pulse signal merging module are composed of a logic gate chip two-input OR gate and an inverter. The arbitration input pulse signal merging module uses a logic gate chip two-input OR gate. The automatic machine cutting switch signal latch module and the arbitration result signal latch module use any one of the logic gate chips RS or JK or D flip-flop or latch. The duty signal flip pulse control module is composed of a logic gate chip two-input AND gate, an inverter and a digital switch chip to realize the designated state flip of the duty signal Status_A / B.

[0039] like Figure 3 As shown, as one of the embodiments, the utility model provides a cold standby arbitration method for a satellite-to-ground communication system, the satellite-to-ground communication system includes a pulse signal input unit, a signal processing unit, that is, a satellite-to-ground communication arbitration circuit in the present application, and a core processing unit, the core processing unit includes multiple core processing modules, and the method includes:

[0040] Step S1, the pulse signal input unit transmits the on-duty pulse signal to the signal processing unit; the signal processing unit specifies the on-duty core processing module in the core processing unit according to the on-duty pulse signal and converts the on-duty pulse signal into a first latch signal, and transmits the first latch signal to the core processing unit;

[0041] Step S2, the core processing unit executes the first latch signal and turns on the corresponding core processing module on duty;

[0042] Step S3, if the core processing module on duty generates a machine cutting fault signal and transmits it to the signal processing unit, the signal processing unit combines the machine cutting pulse signal from the pulse signal input unit with the machine cutting fault signal, performs flipping and merging to generate a second latch signal, and transmits the second latch signal to the core processing unit;

[0043] Step S4, the core processing unit executes the second latch signal and starts another core processing module on duty.

[0044] Specifically, the cold standby arbitration method of the satellite-to-ground communication system in the present application effectively processes the on-duty pulse signal, the machine cutting pulse signal and the machine cutting fault signal through the signal processing unit. The signal processing unit obtains different latch signals based on the states of the three signals, which are used to control different core processing modules to be on duty. This method can ensure that the core processing unit receives the machine cutting pulse signal in a controllable time window to switch the core processing module, and can also switch the core processing module in an uncontrolled time period based on the machine cutting fault signal and the machine cutting pulse signal sent by its own fault, which is suitable for automatic control application scenarios. This embodiment can ensure that the on-duty pulse instruction has no order relationship with the automatic machine cutting instruction, can respond to new instructions freely, and is not affected by the previous state, thereby realizing reliable arbitration of the on-duty right of the core processing module.

[0045] The present application belongs to a method for determining the on-duty status of different core processing modules in a cold standby core processing unit, comprising a functional circuit combination of a control end input-specified arbitration determination and an automatic fault determination, and can be applied to computer backup management of a core processing unit of aerospace equipment.

[0046] Specifically, in the embodiment of the present application, the two pulse signal input units are respectively U1 pulse signal input unit and U2 pulse signal input unit, and the two core processing modules are respectively A core processing module and B core processing module, both of which are cold standby duty mechanisms. The two pulse signal input units transmit the on-duty pulse signal to the designated on-duty pulse signal merging module for information merging to obtain a merged on-duty pulse signal; the two pulse signal input units transmit the machine cutting pulse signal to the automatic machine cutting pulse signal merging module for information merging to obtain a merged machine cutting pulse signal. The two core processing modules transmit the machine cutting fault signal to the fault pulse signal merging module for information merging to obtain a merged machine cutting fault signal.

[0047] In one embodiment, when the on-duty pulse signal of the U1 pulse signal input unit specifies the on-duty OC instruction for the A core processing module, the A core processing module is powered on and the B core processing module is powered off. When the on-duty pulse signal of the U1 pulse signal input unit is converted into a first latch signal by the signal processing unit, the B core processing module is specified to be on-duty OC instruction, the A core processing module is powered off and the B core processing module is powered on.

[0048] In one embodiment, when the U1 input unit specifies the autonomous machine-cutting function enable OC instruction, when the autonomous machine-cutting function is enabled, when the on-duty core processing module generates a pulsed machine-cutting fault signal, the backup core processing module is switched. When the U1 input unit specifies the autonomous machine-cutting function disable OC instruction, when the autonomous machine-cutting function is disabled, the signal processing unit does not respond to the machine-cutting fault signal generated by the on-duty core processing module.

[0049] In one embodiment, when the on-duty pulse signal of the U2 pulse signal input unit specifies the on-duty OC instruction for the A core processing module, the A core processing module is powered on and the B core processing module is powered off. When the on-duty pulse signal of the U2 pulse signal input unit is converted into the first latch signal by the signal processing unit, the B core processing module is specified to be on-duty OC instruction, the A core processing module is powered off and the B core processing module is powered on.

[0050] In one embodiment, when the U2 input unit specifies the autonomous machine-cutting function enable OC instruction, when the autonomous machine-cutting function is enabled, when the on-duty core processing module generates a pulsed machine-cutting fault signal, the backup core processing module is switched. When the U2 input unit specifies the autonomous machine-cutting function disable OC instruction, when the autonomous machine-cutting function is disabled, the signal processing unit does not respond to the machine-cutting fault signal generated by the on-duty core processing module.

[0051] It should be noted that when the A core processing module generates a machine cutting fault signal instruction during the shift, the low-level pulse generated by the hardware watchdog biting the software and hardware monitoring hardware represents the fault of the A core processing module itself. The on-duty signal flip pulse control module flips the machine cutting fault signal and the machine cutting pulse signal to obtain a first flip signal. The arbitration input pulse signal merging unit merges the first flip signal and the on-duty pulse signal to obtain a merged arbitration pulse signal, i.e., the second latch signal. The merged arbitration pulse signal specifies that the B core processing module is powered on and the A core processing module is powered off.

[0052] In addition, when the B core processing module generates a machine cutting fault signal instruction during the shift, the low-level pulse generated by the hardware watchdog biting the software and hardware monitoring hardware represents the fault of the B core processing module itself. The on-duty signal flip pulse control module flips the machine cutting fault signal and the machine cutting pulse signal to obtain a first flip signal. The arbitration input pulse signal merging unit merges the first flip signal and the on-duty pulse signal to obtain a merged arbitration pulse signal, i.e., the second latch signal. The merged arbitration pulse signal specifies that the A core processing module is powered on and the B core processing module is powered off.

[0053] Among them, the active machine cutting switch signal latch module and the arbitration result signal latch module can realize the instruction result latch, and can simultaneously support the active machine cutting instructions and designated arbitration instructions of multiple input units.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A satellite-to-earth communication arbitration circuit, characterized in that: It includes a designated duty pulse signal merging module and an arbitration input pulse signal merging module; The designated on-duty pulse signal merging module is used to merge multiple on-duty pulse signals, and the arbitration input pulse signal merging module is used to receive the merged on-duty pulse signal; The designated on-duty pulse signal merging module is composed of a two-input OR gate of a logic gate chip and an inverter, and the arbitration input pulse signal merging module adopts a two-input OR gate of a logic gate chip.

2. The satellite-to-earth communication arbitration circuit according to claim 1, characterized in that: It also includes an automatic machine cutting pulse signal merging module and a duty signal flip pulse control module. The automatic machine cutting pulse signal merging module is used to merge multiple machine cutting pulse signals, and the duty signal flip pulse control module is used to flip the merged machine cutting pulse signal to obtain a first flip signal, and transmit the first flip signal to the arbitration input pulse signal merging module.

3. The satellite-to-earth communication arbitration circuit according to claim 2, characterized in that: The automatic machine cutting pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

4. The satellite-to-earth communication arbitration circuit according to claim 2, characterized in that: The duty signal flip pulse control module is composed of a logic gate chip, a two-input AND gate, an inverter and a digital switch chip.

5. The satellite-to-earth communication arbitration circuit according to claim 2, characterized in that: It also includes a fault pulse signal merging module, which is used to merge multiple machine cutting fault signals. The on-duty signal flip pulse control module is used to flip the merged machine cutting pulse signal and the merged machine cutting fault signal to obtain a second flip signal, and transmit the second flip signal to the arbitration input pulse signal merging module.

6. The satellite-to-earth communication arbitration circuit according to claim 5, characterized in that: The fault pulse signal merging module is composed of a logic gate chip two-input OR gate and an inverter.

7. The satellite-to-earth communication arbitration circuit according to claim 5, characterized in that: It also includes an automatic machine cutting switch signal latch module, which is arranged between the automatic machine cutting pulse signal merging module and the on-duty signal flip pulse control module.

8. The satellite-to-earth communication arbitration circuit according to claim 7, characterized in that: It also includes an arbitration result signal latch module, and the arbitration result signal latch module is arranged after the arbitration input pulse signal merging module.

9. The satellite-to-earth communication arbitration circuit according to claim 8, characterized in that: The automatic machine switch signal latch module and the arbitration result signal latch module use any one of logic gate chips RS or JK or D flip-flop or latch.

10. A satellite-to-earth communication arbitration system, characterized in that: It comprises the satellite-to-earth communication arbitration circuit as described in any one of claims 1-9.

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