阅读说明：本技术 一种射频开关矩阵及通道交换关系计算方法 (Radio frequency switch matrix and channel switching relation calculation method ) 是由 安兴发 姚宗坤 于 2021-11-01 设计创作，主要内容包括：本发明公开了一种射频开关矩阵及通道交换关系计算方法,包括以下步骤：步骤1：计算每个通道交换关系对应的通道链路表,形成总的通道链路表；步骤2：未选择通道链路的通道中提取一个通道交换关系；步骤3：在K对应的通道链路表中选择一条可用通道链路,进行标记；步骤4：标记未选择通道链路的通道使用到的通道链路输入输出；步骤5：检测是否有与K相同交换关系的未选择通道链路的通道；步骤6：在对应的通道链路表中将使用到非in的通道链路标记为不可用；步骤7：检测是否有未选择通道链路的交换关系；本发明通道交换计算方法可以得到全部通道交换关系对应的通道链路表,得到所有通道的使用情况,计算方法更加简单,降低计算时间。(The invention discloses a radio frequency switch matrix and channel exchange relation calculation method, which comprises the following steps: step 1: calculating a channel link table corresponding to each channel exchange relationship to form a total channel link table; step 2: extracting a channel exchange relation from the channels of the unselected channel links; and step 3: selecting an available channel link from the channel link table corresponding to the K, and marking the available channel link; and 4, step 4: marking the channel link input and output used by the channel of the unselected channel link; and 5: detecting whether a channel of the unselected channel link with the same exchange relation with K exists; step 6: marking the channel link which is used to be not in as unavailable in the corresponding channel link table; and 7: detecting whether an exchange relation of unselected channel links exists; the channel exchange calculation method can obtain the channel link table corresponding to all the channel exchange relations and obtain the service conditions of all the channels, the calculation method is simpler, and the calculation time is reduced.)

1. A channel switching relationship calculation method for a radio frequency switch matrix is characterized by comprising the following steps:

step 1: calculating the channel link table corresponding to each channel exchange relationK _i Forming a total channel link tableC；

Wherein the content of the first and second substances,，i=1,2…，n，nis a matrix channel;

step 2: extracting a channel exchange relation K from the channels of the unselected channel links;

and step 3: selecting an available channel link A (in, out) from the channel link table corresponding to the K, marking a channel link corresponding to a non-channel link in the channel link table corresponding to the K as unavailable, and marking a channel corresponding to the K as a channel of the selected channel link;

and 4, step 4: marking the channel link in the channel links A (in, out) used by the channels of the unselected channel links as unavailable, wherein in is input;

and 5: marking a channel link of out in a channel link A (in, out) used by a channel of the unselected channel link as unavailable, wherein the out is output;

step 6: detecting whether a channel N of the unselected channel link with the same exchange relation with K exists, if so, turning to a step 7, and if not, turning to a step 8;

and 7: marking the channel link which is used in non-in as unavailable in the channel link table corresponding to the N, marking the N as the channel of the selected channel link, and turning to the step 6;

and 8: and (4) detecting whether the exchange relation of the unselected channel links exists, if so, turning to the step 2, and if not, ending.

2. The method as claimed in claim 1, wherein the path switching relationship calculation method in step 1 is a path link tableK _i The calculation method of (2) is as follows:

the radio frequency switch matrix is three-stage switching, and the following links A (in, out) are input in and output out of the second stage;

the switch relation in is connected to out, then:

in outputting initial channel number at first stage board cardM，

Wherein the content of the first and second substances,in≠0，X＞0，Xthe number of channels of the first-stage board card is;

out inputting the initial channel number at the third stage board cardNComprises the following steps:

wherein:out＞0，Y＞0，Ythe number of the third-stage board card channels;

the path link for in connected to out switch relationship isA _n ：

Wherein the content of the first and second substances,Ais as follows;

wherein the content of the first and second substances,A _Bn in order to back-up the channel link,xthe number of the second-level board cards.

3. The radio frequency switch matrix adopting the channel switching relationship calculation method according to any one of claims 1 or 2, wherein the radio frequency switch matrix is in a three-stage switching mode, a 16 x 16 board card is adopted for the first stage and the third stage, and a switching board card is adopted for the second stage; the first stage is 8 blocks of 16 × 16 board cards, the third stage is 16 blocks of 16 × 16 board cards, and the second stage is 16 blocks of 16 × 16 board cards; the exchange board card is connected with the first-stage board card and the third-stage board card through connectors.

4. The radio frequency switch matrix of claim 3, wherein the first level board card and the third level board card are in a single-cavity double-sided radio frequency mode, and the first level board card output radio frequency connector and the third level board card input radio frequency connector are in a staggered arrangement; namely, the first-stage board card output radio frequency connectors are arranged in an array mode, and the input radio frequency connector in the third-stage board card corresponding to the first-stage board card output radio frequency connector is arranged between every two adjacent first-stage board card output radio frequency connectors.

5. The rf switch matrix of claim 3, wherein the second stage switch board employs dual cavities, each cavity including both rf signals and control signals, to separate control signals from rf signals.

Technical Field

The invention relates to the technical field of radio frequency switch matrixes, in particular to a radio frequency switch matrix and a channel switching relation calculation method.

Background

The switch matrix is commonly used in automatic test equipment of various electronic equipment such as radar, communication, electronic countermeasure, friend or foe identification, accurate guidance and the like, and the switch matrix can realize rapid switching of signal flow and is an indispensable part for channel switching in the systems. Along with the continuous improvement of the integration degree of automation equipment, the requirements on the switch matrix are higher and higher, the channel number of the switch matrix is more and more required, and the volume of the switch matrix is smaller and smaller.

The existing switch matrix usually adopts two connection modes, one is a two-stage switching mode, and the other is a three-stage switching mode. The three-stage switching connection mode usually adopts 12 × 12 boards or 16 × 16 boards, and in order to ensure that no blocking occurs, the connector of the switching plane is 2 times of the input channel. The following description is made by using 12 × 12 board cards, and the first stage needs 12 blocks of 12 × 12 board cards to form 128 input channels; the second stage needs 12 blocks of 12 × 24 board cards, and each 2 blocks of 12 × 12 board cards are used for expanding one 12 × 24 board card, so that the second stage needs 24 blocks of 12 × 12 board cards. The third level needs 12 blocks of 24 × 12 boards, and 2 blocks of 12 × 12 boards are adopted to expand 24 × 12 boards. The third level requires 24 blocks 12 x 12. A total of 60 cards are required, substantially occupying a space of about 1.6 meters of the cabinet. The device size is overlarge, and the channel switching relationship calculation method is complex, the calculation time is long, the execution efficiency is low and the like due to the three-stage switching connection mode.

Disclosure of Invention

The invention provides a radio frequency switch matrix and a channel switching relation calculation method aiming at the problems in the prior art.

The technical scheme adopted by the invention is as follows:

a channel switching relation calculation method for a radio frequency switch matrix comprises the following steps:

step 1: calculating the channel link table corresponding to each channel exchange relationK _i Forming a total channel link tableC；

Wherein the content of the first and second substances,，i=1,2…，n，nis a matrix channel;

step 2: extracting a channel exchange relation K from the channels of the unselected channel links;

and step 3: selecting an available channel link A (in, out) from the channel link table corresponding to the K, marking a channel link corresponding to a non-channel link in the channel link table corresponding to the K as unavailable, and marking a channel corresponding to the K as a channel of the selected channel link;

and 4, step 4: marking the channel link in the channel links A (in, out) used by the channels of the unselected channel links as unavailable, wherein in is input;

and 5: marking a channel link of out in a channel link A (in, out) used by a channel of the unselected channel link as unavailable, wherein the out is output;

step 6: detecting whether a channel N of the unselected channel link with the same exchange relation with K exists, if so, turning to a step 7, and if not, turning to a step 8;

and 7: marking the channel link which is used in non-in as unavailable in the channel link table corresponding to the N, marking the N as the channel of the selected channel link, and turning to the step 6;

and 8: and (4) detecting whether the exchange relation of the unselected channel links exists, if so, turning to the step 2, and if not, ending.

Further, the channel link table in step 1K _i The calculation method of (2) is as follows:

the radio frequency switch matrix is three-stage switching, and the following links A (in, out) are input in and output out of the second stage;

the switch relation in is connected to out, then:

in outputting initial channel number at first stage board cardM，

Wherein the content of the first and second substances,in≠0，X＞0，Xthe number of channels of the first-stage board card is;

out inputting the initial channel number at the third stage board cardNComprises the following steps:

wherein:out＞0，Y＞0，Ythe number of the third-stage board card channels;

the path link for in connected to out switch relationship isA _n ：

Wherein the content of the first and second substances,Ais as follows;

wherein the content of the first and second substances,A _Bn in order to back-up the channel link,xthe number of the second-level board cards.

A radio frequency switch matrix is in a three-stage switching mode, a first stage and a third stage adopt 16 x 16 board cards, and a second stage is a switching board card; the first stage is 8 blocks of 16 × 16 board cards, the third stage is 16 blocks of 16 × 16 board cards, and the second stage is 16 blocks of 16 × 16 board cards; the exchange board card is connected with the first-stage board card and the third-stage board card through connectors.

Furthermore, the first-stage board card and the third-stage board card are in a single-cavity double-sided radio frequency mode, and the first-stage board card output radio frequency connector and the third-stage board card input radio frequency connector are arranged in a staggered mode; namely, the first-stage board card output radio frequency connectors are arranged in an array mode, and the input radio frequency connector in the third-stage board card corresponding to the first-stage board card output radio frequency connector is arranged between every two adjacent first-stage board card output radio frequency connectors.

Furthermore, the second-stage exchange board card adopts double cavities, and each cavity comprises two sides of a radio frequency signal and a control signal, so that the separation of the control signal and the radio frequency signal is realized.

The invention has the beneficial effects that:

(1) the channel exchange calculation method can obtain the channel link table corresponding to all the channel exchange relations, and obtain the use conditions of all the channels;

(2) the calculation method is simpler, and the calculation time is reduced;

(3) the calculation method of the invention can improve the execution efficiency of the product and can be directly transplanted to a singlechip.

Drawings

FIG. 1 is a schematic flow chart of the method of the present invention.

FIG. 2 is a 9X 9 three-stage switching diagram in an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

The terms mentioned below are defined as follows:

an uplink matrix: each input is connectable to any output;

downlink matrix: each output is connectable to any input;

a channel: the uplink matrix refers to an input channel of the whole machine, and the downlink matrix refers to an output channel of the whole machine.

Exchange relationship: the selection relation of the channels is indicated, the output channel selected for the input channel corresponding to the uplink matrix is selected, and the input channel selected for the output channel corresponding to the downlink matrix is selected.

As shown in fig. 1, a method for calculating a channel switching relationship of a radio frequency switch matrix includes the following steps:

step 1: calculating the channel link table corresponding to each channel exchange relationK _i Forming a total channel link tableC；

Wherein the content of the first and second substances,，i=1,2…，n，nis a matrix channel;

channel link tableK _i The calculation method of (2) is as follows:

the radio frequency switch matrix is three-stage switching, and the following links A (in, out) are input in and output out of the second stage;

the switch relation in is connected to out, then:

in outputting initial channel number at first stage board cardM，

Wherein the content of the first and second substances,in≠0，X＞0，Xthe number of channels of the first-stage board card is;

out inputting the initial channel number at the third stage board cardNComprises the following steps:

wherein:out＞0，Y＞0，Ythe number of the third-stage board card channels;

the path link for in connected to out switch relationship isA _n ：

Wherein the content of the first and second substances,Ais as follows;

wherein the content of the first and second substances,A _Bn in order to back-up the channel link,xthe number of the second-level board cards. The backup channel link calculation method is the same as the channel link calculation method described above, and is not described herein again.

Step 2: extracting a channel exchange relation K from the channels of the unselected channel links;

and step 3: selecting an available channel link A (in, out) from the channel link table corresponding to the K, marking a channel link corresponding to a non-channel link in the channel link table corresponding to the K as unavailable, and marking a channel corresponding to the K as a channel of the selected channel link;

and 4, step 4: marking the channel link in the channel links A (in, out) used by the channels of the unselected channel links as unavailable, wherein in is input;

and 5: marking a channel link of out in a channel link A (in, out) used by a channel of the unselected channel link as unavailable, wherein the out is output;

step 6: detecting whether a channel N of the unselected channel link with the same exchange relation with K exists, if so, turning to a step 7, and if not, turning to a step 8;

and 7: marking the channel link which is used in non-in as unavailable in the channel link table corresponding to the N, marking the N as the channel of the selected channel link, and turning to the step 6;

and 8: and (4) detecting whether the exchange relation of the unselected channel links exists, if so, turning to the step 2, and if not, ending.

This is explained in detail below with the minimum three-stage exchange relationship, as shown in fig. 2.

The first stage comprises 3 blocks of 3 × 3 board cards, the second stage comprises 3 blocks of 3 × 6 board cards, the third stage comprises 6 blocks of 3 × 3 board cards, and each board card is a full switching matrix, that is, any output can be selected as any input. The input of the first stage is the complete machine input, the output of the first stage is connected to the input of the second stage, the output of the second stage is connected to the third stage input, and the output of the third stage is the complete machine output.

The channel is processed according to the following rules:

and (4) numbering the board card channels again, wherein the board card channel numbers are numbered according to the input of the whole machine.

The inputs from the first-stage board card 1 to the board card 3 are 1, 2, 3, 4, 5, 6, 7, 8 and 9 in sequence, and are arranged from left to right and from top to bottom.

The input 1 of the second-stage board card 1 to the input 1 of the board card 3 are 1, 2 and 3 in sequence, the input 2 of the board card 1 to the input 2 of the board card 3 are 4, 5 and 6 in sequence, and the input 3 of the board card 1 to the input 3 of the board card 3 are 7, 8 and 9 in sequence. Arranged in order from left to right, top to bottom.

The inputs from the third stage board card 1 to the board card 3 are 1, 2, 3, 4, 5, 6, 7, 8 and 9, B1, B2, B3, B4, B5, B6, B7, B8 and B9 in sequence. The backup tunnels B1 to B9 belong to, in order from left to right and from top to bottom, corresponding to 1 to 9.

From the second level, the switching inputs (1, 4, 7) of the channels can only be connected to outputs (1, 4,7, B1, B4, B7), the inputs (2, 5, 8) can only be connected to outputs (2, 5,8, B2, B5, B8), and the inputs (3, 6, 8) can only be connected to outputs (3, 6,9, B3, B6, B9).

The output number of the first stage is the same as the input of the second stage, and the output number of the second stage is the same as the input of the third stage. The output of the third stage is the output of the whole machine, so the above mentioned channel link or channel link table is given according to the input and output number of the second stage, as represented by link a (in, out), i.e. the input in and the output out of the second stage. The second stage channel usage represents usage of all channels.

Therefore, a certain channel link table should be output by the board card where the first-stage in is located, input by the board card where the third-stage out is located, and also correspond to the same input and the same output of all the board cards of the second-stage. The channel link table is obtained by calculation after the channel exchange relationship is determined, and the channel link is one member in the channel link table.

The radio frequency switch matrix adopting the channel switching relation calculation method is in a three-stage switching mode, the first stage and the third stage adopt 16 x 16 board cards, and the second stage is a switching board card; the first stage is 8 blocks of 16 × 16 board cards, the third stage is 16 blocks of 16 × 16 board cards, and the second stage is 16 blocks of 16 × 16 board cards; the exchange board card is connected with the first-stage board card and the third-stage board card through connectors. The second stage is a composite board card, the structure is adopted, the height of the whole machine is only related to the number of 16 x 16 board cards, the design height of the 16 x 16 board cards is 18-22 mm, the height is about 480 mm, additional components such as a power supply, a display and a fan are arranged, and the total height is about 700 mm. The indication information of the whole radio frequency connector adopts an external nameplate installation mode, and the problem that the exchange board cards cannot be exchanged is solved.

The first-stage board card and the third-stage board card are in a single-cavity double-sided radio frequency mode, and the first-stage board card output radio frequency connector and the third-stage board card input radio frequency connector are arranged in a staggered mode; namely, the first-stage board card output radio frequency connectors are arranged in an array mode, and the input radio frequency connector in the third-stage board card corresponding to the first-stage board card output radio frequency connector is arranged between every two adjacent first-stage board card output radio frequency connectors. The connecting mode can improve the space utilization rate, the board card is formed by stacking a plurality of PCB radio frequency boards, and the three core contents of power division, wiring and switching are realized.

The second-stage exchange board card adopts double cavities, and each cavity comprises two sides of a radio frequency signal and a control signal, so that the separation of the control signal and the radio frequency signal is realized. Such dual chamber weight points are a distinction in functional equipment. The radio frequency connectors are arranged in a double-row staggered mode, and the problem of crossing of internal wires of the board cards is solved. The cavity 1 realizes the coupling and direct connection of 8 paths of signals and a switch with 16 paths of 8-way 1 selection, and the cavity 2 realizes the amplification of 8 paths of signals, 16 paths of 1 division and 16 power division and a switch with 8 paths of 2 selection and 1 selection. The cavity 1 and the cavity 2 are directly overlapped together to form the exchange board card.

In addition, in order to further compress the volume, the whole equipment is controlled by a single-chip microcomputer main control board, however, due to the complexity of a three-level exchange algorithm, the exchange of the whole equipment is realized by adopting the calculation method. The two boards adopt a uniform address coding mode, the same core control unit is adopted, control data are issued to the boards through a CAN bus, and group upgrading is realized through CAN broadcasting. Through the redefinition of the CAN, the ID is disassembled into a mode of priority, a mode of destination address and a mode of function code, the control priority management of the board card CAN be realized, and therefore the cluster upgrading of the board card control program is realized. The original inquiry and response modes are changed into the automatic acquisition of information such as board temperature, power voltage, power current, channel state and the like and the real-time display of the information on the terminal equipment through the definition of the heartbeat package.

The calculation method is simpler, the complexity can be reduced, and the calculation time is reduced; and the method can be directly transplanted to a single chip microcomputer, so that the execution efficiency is improved, and the cost of the exchange algorithm is reduced.