Switch matrix type space navigation intelligent power distribution control device and methodTechnical Field
The invention belongs to the field of power supply and distribution, and particularly relates to a switch matrix type aerospace intelligent power distribution control device and method.
Background
In recent years, the intelligent power distribution single machine gradually replaces the traditional power distribution single machine to be widely applied to satellites, along with the increase of integration level and the increase of the number of power distribution circuits of the aerospace intelligent power distribution single machine, the traditional control method cannot meet the requirements, and the switch matrix type control technology adopting row-column control is imperative.
A schematic diagram of a conventional direct command type power distribution control technology is shown in fig. 1, and main functional circuits include a driving circuit and a switching circuit. The power distribution single machine receives an external control instruction, and acts on the switch circuit after passing through the drive circuit, so that power distribution output is realized. The single power distribution unit adopting the control technology has low integration level, larger volume and weight and poor expandability, is only suitable for occasions with less power distribution circuits, and can not meet the requirement of increasing the number of the power distribution circuits.
A schematic diagram of a conventional bus command type power distribution control technique is shown in fig. 2, and main functional circuits include a microprocessor, a driving circuit, and a switching circuit. The single power distribution unit receives the bus instruction, the microprocessor analyzes the bus instruction and sends a control signal, and the control signal acts on the switch circuit after passing through the drive circuit to realize power distribution output. Compared with the traditional direct instruction type single power distribution unit, the single power distribution unit adopting the control technology has the advantages that the flexibility and the integration degree are obviously improved, but when the number of power distribution circuits is increased, a large amount of microprocessor resources are occupied, the load of a microprocessor is increased, the defects of poor expansibility exist, and the requirements of increasing the integration degree of the aerospace intelligent single power distribution unit and increasing the number of the power distribution circuits are difficult to meet.
Disclosure of Invention
The technical problem solved by the invention is as follows: the switch matrix type aerospace intelligent power distribution control device overcomes the defects of the prior art, solves the problems that the integration degree of an aerospace intelligent power distribution single machine is increased day by day and the number of power distribution circuits is increased gradually, and has the advantages of few control signal circuits, small microprocessor load and strong expandability.
The purpose of the invention is realized by the following technical scheme: according to one aspect of the invention, the invention provides a switch matrix type aerospace intelligent power distribution control device, which comprises: the circuit comprises a microprocessor, a row latch, a column latch, a decoder, N buffers and a switch circuit; wherein the microprocessor generates row control signals and column control signals, transmits the row control signals to the row latches via a first data bus, and transmits the column control signals to the column latches via a second data bus; the line latch generates M line signals according to the line control signals, and each line signal is transmitted to a corresponding buffer; the decoder decodes the N column signals to generate N column signals required by the buffer, and transmits each required column signal to the corresponding buffer; each buffer receives corresponding row signals and column signals, then the received row signals are used as data input signals of the buffer, the received column signals are used as output enabling control signals of the buffer, the corresponding row signals are firstly set/reset according to the switching requirements of a power distribution channel, then the switching signals of the corresponding channel are output under the control of the column signals, under the combined action of the M row signals and the N column signals, M × N switching signals can be generated in total, and each switching signal is transmitted to the corresponding switching circuit; the switch circuit receives the switch signal output by the buffer, and realizes the switch control of each power distribution channel for supplying power to the load.
In the switch matrix type space navigation intelligent distribution control device, the row signal determines the high-low level type of each path of switch signal output by the buffer, and the column signal determines the specific form of each path of switch signal output by the buffer and matched with the trigger requirement of the post-stage switch circuit.
In the switch matrix type space navigation intelligent distribution control device, the output switch signal is a level signal or a pulse signal with adjustable width.
In the switch matrix type aerospace intelligent distribution control device, the row latch is a level latch or an edge latch.
In the above switch matrix type aerospace intelligent distribution control device, the column latch is a level latch or an edge latch.
According to another aspect of the present invention, there is also provided a switch matrix type aerospace intelligent power distribution control method, including the following steps: the microprocessor generates a row control signal and a column control signal, transmits the row control signal to the row latch through a first data bus, and transmits the column control signal to the column latch through a second data bus; the line latch generates M line signals according to the line control signals, and each line signal is transmitted to a corresponding buffer; the column latch generates N column signals according to the column control signals and transmits the N column signals to the decoder, the decoder decodes the N column signals to generate N column signals required by the buffer, and each required column signal is transmitted to the corresponding buffer; each buffer receives corresponding row signals and column signals, then the received row signals are used as data input signals of the buffer, the received column signals are used as output enabling control signals of the buffer, the corresponding row signals are firstly set/reset according to the switching requirements of a power distribution channel, then the switching signals of the corresponding channel are output under the control of the column signals, under the combined action of the M row signals and the N column signals, M × N switching signals can be generated in total, and each switching signal is transmitted to the corresponding switching circuit; the switch circuit receives the switch signal output by the buffer, and realizes the switch control of each power distribution channel for supplying power to the load.
In the switch matrix type space navigation intelligent power distribution control method, the row signal determines the high-low level type of each path of switch signal output by the buffer, and the column signal determines the specific form of each path of switch signal output by the buffer and matched with the triggering requirement of the post-stage switch circuit.
In the switch matrix type space navigation intelligent power distribution control method, the output switch signal is a level signal or a pulse signal with adjustable width.
In the switch matrix type aerospace intelligent power distribution control method, the row latch is a level latch or an edge latch.
In the switch matrix type aerospace intelligent power distribution control method, the column latch is a level latch or an edge latch.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention achieves the effect of optimizing and configuring the resources of the microprocessor by time-sharing utilization of the microprocessor bus, reduces the requirements on the number and the performance of the ports of the microprocessor, reduces the cost, improves the reliability and is more beneficial to the model selection design of aerospace models.
(2) The invention achieves the effect of latching row and column signals by applying the row latch and the column latch, releases the bus resource of the microprocessor and reduces the load of the microprocessor.
(3) The invention adopts the buffer as the switch signal output interface, achieves the effect of flexible configuration of the number of the distribution circuits and enhances the expandability of the system.
(4) The invention achieves the control effect of the switch matrix type of the power distribution circuit by adopting a row and column signal control mode for the data input end and the output enable control end of the buffer, optimizes the system structure and reduces the number of control signal paths.
(5) The invention achieves the effect of realizing more power distribution paths by using less hardware resources through the structural arrangement of the line latches, the column latches and the buffers, and solves the problems of increasing the integration level of the aerospace intelligent power distribution single machine and increasing the number of the power distribution paths gradually.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a conventional direct-command power distribution control technique;
FIG. 2 is a schematic diagram of a conventional bus-commanded power distribution control technique;
fig. 3 is a block diagram of the switching matrix type aerospace intelligent power distribution control device of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 3 is a block diagram of the switching matrix type aerospace intelligent power distribution control device of the invention. As shown in fig. 3, the switch matrix type aerospace intelligent power distribution control device comprises: the circuit comprises a microprocessor, a row latch, a column latch, a decoder, N buffers and a switch circuit; wherein,
the microprocessor generates a row control signal and a column control signal, transmits the row control signal to the row latch through a first data bus, and transmits the column control signal to the column latch through a second data bus;
the line latch generates M line signals according to the line control signals, and each line signal is transmitted to a corresponding buffer;
the decoder decodes the N column signals to generate N column signals required by the buffer, and transmits each required column signal to the corresponding buffer;
each buffer receives a corresponding row signal and a column signal, and then takes the received row signal as a data input signal of the buffer and the received column signal as an output enable control signal of the buffer. The column signal determines the specific form of each switch signal output by the buffer and matched with the triggering requirement of the switch circuit at the later stage. According to the switching requirement of the power distribution channel, firstly, the corresponding row signal is set/reset, then, the switching signal output of the corresponding channel is realized under the control of the column signal, and the output switching signal can be a level signal or a pulse signal with adjustable width. Under the combined action of the M row signals and the N column signals, M-by-N switching signals can be generated in total, and each switching signal is transmitted to the corresponding switching circuit.
The switch circuit receives the switch signal output by the buffer, and realizes the switch control of each power distribution channel for supplying power to the load.
The switch matrix type space navigation intelligent power distribution control technical schematic diagram of the invention is shown in fig. 3, and mainly comprises four parts, namely generating a control signal, generating a row signal, generating a column signal and outputting a switch signal. The following explains the switch matrix type aerospace intelligent power distribution control technical schematic diagram of the invention with reference to fig. 3:
the first part is to generate control signals and is realized by adopting a microprocessor, a data bus of the microprocessor is respectively connected with the data input ends of the row latch and the column latch, and the microprocessor sends the control signals to the row latch and the column latch in a time-sharing way through the data bus according to the requirement of a power distribution path;
the second part is a row signal, is realized by adopting a latch, and can select a level type latch or an edge type latch according to specific circuit requirements. The input end of the latch is connected with a data bus of the microprocessor, the output end of the latch is connected with the data input end of the buffer, and the latch is mainly used for latching a row control signal sent by the microprocessor to generate a row signal required by a rear-stage buffer;
the third part is to generate column signals, and is realized by adopting a latch and a decoder, wherein the input end of the latch is connected with a data bus of the microprocessor, the output end of the latch is connected with the address input end of the decoder, and the output end of the decoder is connected with the enabling input end of the buffer. The function of the latch is the same as that of the second part, and the decoder outputs a corresponding column signal to act on the enabling input end of the rear-stage buffer according to the requirement of the column control signal, so that the buffer is gated to output;
the fourth part is to output the switching signal, and is realized by adopting buffers, and the number of the buffers is selected according to the number of the power distribution channels. The data input end of the buffer receives row signals output by the row latch, the enable input end of the buffer receives column signals output by the decoder, and the output end of the buffer is connected with the input end of the switch circuit. The buffer is positioned at the node position of the row and column signals of the switch matrix, and outputs the switch signals to control the on-off of the power distribution circuit under the common control of the row and column signals of the switch matrix.
The embodiment also provides a switch matrix type aerospace intelligent power distribution control method, which comprises the following steps:
the microprocessor generates a row control signal and a column control signal, transmits the row control signal to the row latch through a first data bus, and transmits the column control signal to the column latch through a second data bus;
the line latch generates M line signals according to the line control signals, and each line signal is transmitted to a corresponding buffer;
the column latch generates N column signals according to the column control signals and transmits the N column signals to the decoder, the decoder decodes the N column signals to generate N column signals required by the buffer, and each required column signal is transmitted to the corresponding buffer;
each buffer receives corresponding row signals and column signals, then the received row signals are used as data input signals of the buffer, the received column signals are used as output enabling control signals of the buffer, the corresponding row signals are firstly set/reset according to the switching requirements of a power distribution channel, then the switching signals of the corresponding channel are output under the control of the column signals, under the combined action of the M row signals and the N column signals, M × N switching signals can be generated in total, and each switching signal is transmitted to the corresponding switching circuit;
the switch circuit receives the switch signal output by the buffer, and realizes the switch control of each power distribution channel for supplying power to the load.
In the above embodiments, the row signal determines the high-low level type of each switch signal output by the buffer, and the column signal determines the specific form of each switch signal output by the buffer matching the trigger requirement of the switch circuit in the next stage.
In the above embodiment, the output switching signal is a level signal or a pulse signal with adjustable width.
In the above embodiments, the row latches are level type latches or edge type latches.
In the above embodiments, the column latch is a level type latch or an edge type latch.
The controllable number of the distribution channels of the invention is as follows:
assuming that the row signals are m (since the control signals of the switch circuits are all present in pairs, m is a multiple of 2) and the column signals are n, the number of the current distribution channels controllable by the present invention is m × n/2.
The invention has strong expandability and the realization mode is as follows:
the invention can realize the flexible configuration of the row signals of the switch matrix by increasing or reducing the number of the data buses connected with the row latches; flexible configuration of the switch matrix column signals is realized by increasing or decreasing the number of output paths of the decoder; and flexible configuration of the power distribution path is realized through changing the row signals or the column signals.
The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.