CN202111685U - Extensible switch matrix plate - Google Patents
Extensible switch matrix plate Download PDFInfo
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- CN202111685U CN202111685U CN 201120170420 CN201120170420U CN202111685U CN 202111685 U CN202111685 U CN 202111685U CN 201120170420 CN201120170420 CN 201120170420 CN 201120170420 U CN201120170420 U CN 201120170420U CN 202111685 U CN202111685 U CN 202111685U
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- switch matrix
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Abstract
The utility model relates to an extensible switch matrix plate which is connected with a control platform and comprises a relay matrix which comprises a plurality of relays, is formed in a matrix form and is suitable to connecting one or a plurality of extensible switch matrix plates, a logic level port used for connecting the control platform, an extensible control port used for connecting the logic level port or ports of the one for more extensible switch matrix plates, and a control circuit connected with the relay matrix, the logic level port and the extensible control port respectively, and used for receiving a relay control signal from the control platform and providing a control signal for the relay so as to control the on and off of the relay. The switch matrix plate is easy to extend and construct a two dimension relay matrix with any form, has good universality, and can lower the waste of hardware cost.
Description
Technical field
The utility model relates to a kind of extendible switch matrix plate.
Background technology
Switch matrix card and switch matrix plate are widely used in industrial automation equipment or testing equipment, and its major function is the folding through relay, realize the switching transmission of unlike signal, with the economize on hardware cost.For example, the product NI-PXle-2529 of American National instrument company is exactly a kind of typical switch matrix card.This integrated circuit board includes 128 relay switches, and can pass through software setting, is configured as 4 * 32 or 8 * 16 two-dimentional switch matrix.But this switch matrix card can only be applied to have the interface of PXle slot, and matrix configuration is fixed as two types.
The matrix switch board of prior art is stuck in when using, and needs specific PC (PC) or advanced interface and the corresponding special driver of IPC (industrial computer) usually.And for PLC low side logic control appliances such as (programmable logic controller (PLC)s); Usually do not have PCI (external equipment component interconnection), PXI (towards the external equipment component interconnection expansion of instrument system) or PXIe advanced interface such as (expanding towards the external equipment component interconnection of instrument system at a high speed); Therefore, the versatility of this type of integrated circuit board between different Industry Control platforms is restricted.
In addition; Manufacturer is for the needs of As soon as possible Promising Policy different user; When design relay matrix integrated circuit board; Employed relay module quantity tends to be much higher than normal demand, and pre-set limit is carried out in the scale configuration of matrix, is restricted to like the NI-PXle-2529 integrated circuit board and can only between the matrix of 4 * 32 and 8 * 16 two kinds of scales, selects to switch.This just feasible significant wastage that has caused hardware cost in use.For example; Referring to Fig. 1, when " L " type matrix shown in the structural map, realize that the needed relay quantity of function is 48; But integrated circuit board for extensive consolidated structures; Like NI-PXle-2529, then need an integrated circuit board be configured to as shown in Figure 28 * 16 matrix, and the invalid relay module in the frame of broken lines on Fig. 2 the right can only go out of use in actual use need not and cause waste; Final expend the L type relay matrix shown in Figure 1 that 128 relays and signal input/output point that some are useless could be realized designing requirement altogether, promptly constitute by 48 relays outward of the frame of broken lines shown in Fig. 2 left side.
The utility model content
The utility model is intended to overcome the above-mentioned defective of prior art, and a kind of extendible switch matrix plate is provided, and is connected with controlling platform, and said extendible switch matrix plate comprises:
Relay matrix comprises: several relays, and form with matrix form, and be suitable for connecting other one or more extendible switch matrix plates;
The logic level port connects said controlling platform;
The expansion control port connects the logic level port of said other one or more extendible switch matrix plates; And
Control circuit connects said relay matrix, logic level port and expansion control port respectively, is used to receive the relay control signal from said controlling platform, and to said relay said control signal is provided, to control the folding of said relay.
According to the embodiment of the utility model, said logic level port comprises at least two logic level ports, is suitable for connecting said control circuit and at least two controlling platform with different output logic level respectively.
According to the embodiment of the utility model, said at least two logic level ports have different input logic levels; In said at least two logic level ports at least one comprises the level shifting circuit that links to each other with said control circuit, is used for converting to the logic level of said control circuit said its input logic level consistent.
According to the embodiment of the utility model, said relay matrix is 4 * 4 matrixes, comprises 16 relay module.
According to the embodiment of the utility model, said control circuit comprises one or more transistor-transistor levels (TTL) logic chip.
According to the embodiment of the utility model, said different input logic level comprises 5V level logic level and 24V level logic level at least.
Embodiment according to the utility model; In said logic level port and the expansion control port each comprises three hardware pin: locking signal pin, serial data signal pin and serial clock signal pin are respectively applied for transmission locking signal, serial data signal and serial clock signal.
Embodiment according to the utility model; After the signal of said locking signal pin got into extendible switch matrix plate, the signal through AND gate chip and serial clock signal pin carried out the logical computing and as the triggering signal that reads the signal of serial data signal pin
According to the embodiment of the utility model, said relay matrix also comprises: the transverse axis input/output point is suitable for connecting the transverse axis input/output point of said other one or more extendible switch matrix plates; And longitudinal axis input/output point, be suitable for connecting the longitudinal axis input/output point of said other one or more extendible switch matrix plates.
Embodiment according to the utility model; Said control circuit comprises: the serial data receiving unit; Be suitable for receiving relay control data information with serial mode, and be converted into the also digital signal of line output from controlling platform through said logic level port; Relay drive circuit is suitable for the digital signal of being changed is converted into the folding drive signal of said relay.
The utility model is easy to expand and make up the two-dimentional relay matrix of arbitrary form, and versatility is good, and can reduce the waste of hardware cost.
Description of drawings
Fig. 1 is a kind of configuration sketch map of L type relay matrix;
Fig. 2 is the relay matrix sketch map that disposes for the L type relay matrix of realizing Fig. 1 in the prior art;
Fig. 3 is the structured flowchart according to the extendible switch matrix plate of the embodiment of the utility model;
Fig. 4 is the control circuit structured flowchart according to the extendible switch matrix plate of the embodiment of the utility model, and wherein control circuit is connected with expansion control port and logic level port;
Fig. 5 is the circuit diagram of the serial data receiving unit of control circuit shown in Figure 4;
Fig. 6 is the sketch map of the relay drive circuit part of control circuit shown in Figure 4;
Fig. 7 is that the road 24V logic level transition of extendible switch matrix plate of the embodiment of the utility model is the logic level converting circuit sketch map of 5V logic level.
Embodiment
According to an embodiment of the utility model, the circuit structure of extendible switch matrix plate is as shown in Figure 3.Wherein adopt 4 * 4 relay matrix (to see the matrix on Fig. 3 top; Comprise 16 relay module) and the basic matrix unit integrated circuit board of control circuit (its structure is as shown in Figure 4) formation, also can as required relay matrix be configured to other size as cell matrix.Such design scale can in use be easy to expand and make up the two-dimentional relay matrix of arbitrary form, and the quantity that reduces invalid relay as much as possible, reduces the waste of hardware cost.
Be provided with X axle (being transverse axis) signal input port, X axis signal output port, Y axle (being vertical pivot) signal input port and Y axis signal output port in the periphery of relay matrix, can be used for connecting X axis signal input/output end port and the Y axis signal input/output end port of expanding relay matrix respectively.Each signal input/output end port comprises 4 signal input/output points.
Control circuit provides relay folding control signal to relay matrix, to control the folding of wherein each relay.Control circuit also connects the expansion control port respectively, as the 5V logic level port of the first logic level port with as the 24V logic level port of the second logic level port.According to the embodiment of the utility model, these two kinds of logic level ports make the switch matrix plate can connect polytype Industry Control platform (not shown).The first logic level port and the second logic level port are not worked usually simultaneously, have only one of them to connect corresponding a kind of controlling platform during work.
Embodiment according to the utility model; In Fig. 3 and 24V logic level port, 5V logic level port and the expansion control port shown in Figure 4 each comprises three hardware pin: locking signal pin, serial data signal pin and serial clock signal pin; Thereby a kind of general serial communication control interface that constitutes with three bit digital logical signals is provided, i.e. locking signal (EN), serial data signal (DATA) and serial clock signal (CLK).In addition, through the relevant hardware design, (be that 24V is defined as logical one, 0V is defined as logical zero to two logic ports on the extendible switch matrix plate of this embodiment applicable to " 24V level logic " respectively.Be common in the logic input/output port of various programmable logic controller (PLC)s) and " 5V level logic " (be that 5V is defined as logical one, 0V is defined as logical zero.Be common in the digital integrated circuit board of various types of PC/IPC).Existing programmable logic controller (PLC) (PLC) the 24V logic levels that adopt, also some is to adopt the 5V logic level more.
In the present embodiment; The hardware pin definition of all control signal ports in the structure of Fig. 3 (i.e. " 24V logic level port ", " 5V logic level port " and " expansion control port ") is identical; Comprise locking signal pin, serial data signal pin and serial clock signal pin, its pin distributes as shown in table 1:
Table 1
Control circuit comprises one or more transistor-transistor levels (TTL) logic chip.In the present embodiment, the control circuit as the extendible switch matrix plate of switch matrix unit integrated circuit board can use 74 mature and stable and cheap serial basic logical gate circuit chips to constitute.For example; Please with reference to Fig. 5, the core of control circuit is the serial data receiving unit that 2 74F164 chips (the parallel Output Shift Register of 8 Bits Serial input) are formed, be used for receiving come from controlling platform controller (like PC; IPC; Digital Logic integrated circuit board among the PLC, not shown) relay folding data message, and be converted into behind 16 position digital signals it and line output (being frame of broken lines part among Fig. 5).
After locking signal in the table 1 (EN) gets into extendible switch matrix plate; Carry out the logical computing also as the triggering signal (as shown in Figure 5) that reads serial data signal (DATA) through AND gate chip and serial clock signal (CLK); Like this when locking signal (EN) is logical zero; Shielding serial clock signal (CLK), and then the serial data signal (DATA) of the input of locking 74F164 chip; Only when locking signal (EN) was logical one, the 74F164 chip just can receive serial data signal.Simultaneously, locking signal (EN) before through AND gate shown in Figure 6, to carry out the logic NOT operation through an inverter chip (not shown among Fig. 6) earlier after, will use (holding the back details) as " relay locking signal " among Fig. 6.
In conjunction with reference to Fig. 4 and Fig. 7; (5V is a logical one because the employed gate circuit chip of control circuit of extendible switch matrix plate is the 5V logic level; 0V is a logical zero) 74 family chips form, therefore, for Fig. 3 in the 24V logic level of 24V logic level port (24V is a logical one; 0V is a logical zero) input be complementary, 24V logic level port and logic level converting circuit (24V to 5V) join.Port comprises three road signals; 24V to the 5V logic level converting circuit of each road signal is as shown in Figure 7; The bleeder circuit that uses resistance 1 (190 ohm) and resistance 2 (50 ohm) formation on the hardware of this 24V logic level port is as level shifting circuit; The voltage of 24V logic level signal is reduced to the 5V logic level uses, promptly export the 5V logic level.
In conjunction with reference to Fig. 4 and Fig. 6, Fig. 6 is the sketch map of the relay drive circuit part of control circuit.Each of this 16 position digital signal is after carrying out the logical computing with " relay locking signal "; Will be as the control signal of corresponding relay in the relay matrix on the extendible switch matrix plate of this embodiment; Through a not gate, be used for the folding of control relay.Because relay drive circuit has adopted not gate to add the hardware designs of drawing resistance; So when " relay locking signal " when being 1, " disconnections " and " closure " of corresponding relay controlled in the variation of the logical zero of each digital signal and " 1 " in 16 position digital signals; And work as " relay locking signal " when being 0, and no matter each of 16 position digital signals is that logical zero still is logical one, relay all will be in off-state.
For example; In " relay locking signal " is 1 o'clock; If 16 relay matrix folding digital signal be " 0000000000000001 ", owing to minimum one digital signal is " 1 ", so with this corresponding relay with closure; And other digital signal is owing to be " 0 ", and pairing all the other 15 relays will be in off-state.
When the extendible switch matrix plate of practical application the utility model makes up one 4 * 4 relay matrix as monolithic matrix unit integrated circuit board; The user can be according to the difference of the logic level of the digital integrated circuit board of the controller in the controlling platform (like the Digital Logic integrated circuit board among PC, IPC or the PLC); Any three logical signals of digital integrated circuit board are inserted " the 24V logic level port " or " 5V logic level port " of first block of extendible switch matrix plate, and these three logical signals are defined as " EN ", " DATA " and " CLK " in the table 1 respectively.When the folding of configuration relay matrix; The EN signal is set to logical one earlier, and all relays on this switch matrix plate will be in off-state at this moment, and the 74F164 chip is then in running order; Controller in the controlling platform is with 16 relay matrix folding configuration data little-endians; Send through the DATA holding wire successively, and corresponding on the CLK signal, produce rising edge, thereby realize the transmission of serial data.After the transmission of accomplishing all 16 configuration datas, the EN signal is set to 0, and 16 relays in the relay matrix will be realized breaking off and closure according to 16 configuration datas at this moment, and the input of serial data is with conductively-closed simultaneously.
In an embodiment, what " the expansion control port " in the extendible switch matrix plate adopted also is the 5V logic level, and its pin distributes and meets the definition of table 1 equally.When the user need construct the relay matrix greater than 4 * 4; Be assumed to be the matrix (N is the positive integer greater than 1) of 4N * 4N; The user need at first prepare the extendible switch matrix plate of N piece; According to the requirement of using the extendible switch matrix plate of monolithic, the controller in the controlling platform is connected with the 1st block of extendible switch matrix plate, and " the expansion control port " of the 1st block of extendible switch matrix plate is connected with " the 5V logic level port " of the 2nd block of extendible switch matrix plate afterwards; Repeat such connection afterwards successively; That is, " the expansion control port " of last block of extendible switch matrix plate is connected with " the 5V logic level port " of a back extendible switch matrix plate, is connected with " the 5V logic level port " of the extendible switch matrix plate of N piece up to " expansion control port " with the extendible switch matrix plate of N-1 piece; Constitute needed relay matrix, so just accomplished the expansion of control circuit.Signal transmssion line with relay matrix connects through input/output point according to demand again, can realize the expansion of switch matrix integrated circuit board.In use; For the controller in the controlling platform; Its control signal sending order is identical with the order of the extendible switch matrix plate of said monolithic before, that is, the EN signal is set earlier is " 1 "; Through the serial data of corresponding all the relay foldings of DATA transmission, completion is changed to " 0 " with the EN signal after sending again.Unique difference is; What the extendible switch matrix plate of monolithic was controlled is 16 relays; And the extendible switch matrix plate of N to control be 16N relay, therefore, the amount of the serial data of on DATA, sending is also than the big N of data volume of the extendible switch matrix plate of monolithic doubly.But because the control of each extendible switch matrix plate is relatively independent, therefore, when preparing serial data, the user should be that unit is prepared with extendible switch matrix plate, is the extendible switch matrix plate of N piece and prepares N part serial data.When sending; According to the order of successively decreasing; Send since the serial data of the extendible switch matrix plate of N piece, the data of and then sending the extendible switch matrix plate of N-1 piece afterwards, by that analogy; Till the 1st block of extendible switch matrix plate, so just accomplished and passed through the process that DATA sends the serial data of corresponding all relay foldings under the extended mode.
Embodiment according to the utility model; For example; In order to realize the L type matrix shown in Fig. 1; One group of 4 longitudinal axis signal input/output point of the 1st block of extendible switch matrix plate and one group 4 longitudinal axis signal input/output points of the 2nd block of extendible switch matrix plate are joined; One group 4 transverse axis signal input/output points with the 2nd block of extendible switch matrix plate link to each other with one group 4 transverse axis signal input/output points of the 3rd block of extendible switch matrix plate again, have promptly accomplished the connection of whole relay matrix, constitute " L " type relay matrix.On the control port, successively " the expansion control port " of the the 1st, the 2nd and the 3rd block of extendible switch matrix plate connected with " the 5V logic level port " of next piece each other, promptly accomplished the expansion of control signal.During use; The industry Programmable Logic Controller is making in a like fashion according to the monolithic integrated circuit board still; Earlier the EN signal is made as 0; Send 48 (16 * 3) relay matrix folding control signals successively according to the order of " the 3rd, the 2nd, the 1st " again, can realize the control of the relay matrix of whole expansion.
Embodiment according to the utility model; A kind of expansion scheme of utilizing expansion control port on the matrix switch board to expand relay matrix is provided; Promptly; " the 5V logic level port " of first order unit integrated circuit board (for example aforementioned the 1st block of extendible switch matrix plate) is connected with controller in the controlling platform; And " the 5V expansion control port " of unit at different levels integrated circuit board afterwards is connected in series each other with " the 5V logic level port " of next stage unit integrated circuit board, connects the relay matrix on the unit at different levels integrated circuit board through the signal input/output end port on the relay matrix simultaneously, thereby has realized expansion.This design makes the user can the extendible switch matrix plate as basic matrix unit integrated circuit board be expanded to the two-dimentional relay switch matrix of arbitrary dimension, revises on any hardware or increase and needn't make control appliance.Therefore, this also makes the utility model have more versatility and economy.In the present embodiment; " the 5V logic level port " of first order unit integrated circuit board is connected with the controller in the controlling platform; " the 5V expansion control port " of unit at different levels integrated circuit board afterwards is connected in series each other with " the 5V logic level port " of next stage unit integrated circuit board; Obviously; In another embodiment, can " the 24V logic level port " of first order unit integrated circuit board be connected with controller in the controlling platform, " the 24V expansion control port " of unit at different levels integrated circuit board afterwards is connected in series each other with " the 24V logic level port " of next stage unit integrated circuit board.
In addition, in practical application, the programmer only need make up a byte arrays and send this array successively.The desired minimum pulse duration of 74F164 register in the control circuit is 20ns, and are Millisecond (ms) cycle time of most of industrial Programmable Logic Controllers, and its time length is far above the minimum requirements of chip.In the case, the programmer needn't spend more time the writing of code of delaying time, thereby has simplified the software programming of Programmable Logic Controller and the process of equipment debugging.
Claims (10)
1. an extendible switch matrix plate is connected with controlling platform, it is characterized in that comprising:
Relay matrix comprises: several relays, and form with matrix form, and be suitable for connecting other one or more extendible switch matrix plates;
The logic level port connects said controlling platform;
The expansion control port connects the logic level port of said other one or more extendible switch matrix plates; And
Control circuit connects said relay matrix, logic level port and expansion control port respectively, is used to receive the relay control signal from said controlling platform, and to said relay said control signal is provided, to control the folding of said relay.
2. extendible switch matrix plate according to claim 1 is characterized in that,
Said logic level port comprises at least two logic level ports, is suitable for connecting said control circuit and at least two controlling platform with different output logic level respectively.
3. extendible switch matrix plate according to claim 2 is characterized in that, said at least two logic level ports have different input logic levels; In said at least two logic level ports at least one comprises the level shifting circuit that links to each other with said control circuit, is used for converting to the logic level of said control circuit said its input logic level consistent.
4. extendible switch matrix plate according to claim 1 is characterized in that said relay matrix is 4 * 4 matrixes, comprises 16 relay module.
5. extendible switch matrix plate according to claim 1 is characterized in that, said control circuit comprises one or more transistor-transistor levels (TTL) logic chip.
6. extendible switch matrix plate according to claim 3 is characterized in that, said different input logic level comprises 5V level logic level and 24V level logic level at least.
7. extendible switch matrix plate according to claim 1 is characterized in that, each in said logic level port and the expansion control port comprises three hardware pin: locking signal pin, serial data signal pin and serial clock signal pin.
8. extendible switch matrix plate according to claim 7; It is characterized in that; After the signal of said locking signal pin got into extendible switch matrix plate, the signal through AND gate chip and serial clock signal pin carried out the logical computing and as the triggering signal that reads the signal of serial data signal pin.
9. extendible switch matrix plate according to claim 1 is characterized in that,
Said relay matrix also comprises:
Transverse axis signal input/output point is suitable for connecting the transverse axis signal input/output point of said other one or more extendible switch matrix plates; And longitudinal axis signal input/output point, be suitable for connecting the longitudinal axis signal input/output point of said other one or more extendible switch matrix plates.
10. according to claim 1 or 5 described extendible switch matrix plates, it is characterized in that said control circuit comprises:
The serial data receiving unit is suitable for receiving the relay control data information from controlling platform through said logic level port with serial mode, and is converted into the also digital signal of line output;
Relay drive circuit is suitable for the digital signal of being changed is converted into the folding drive signal of said relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120170420 CN202111685U (en) | 2011-05-23 | 2011-05-23 | Extensible switch matrix plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120170420 CN202111685U (en) | 2011-05-23 | 2011-05-23 | Extensible switch matrix plate |
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| CN202111685U true CN202111685U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120170420 Expired - Lifetime CN202111685U (en) | 2011-05-23 | 2011-05-23 | Extensible switch matrix plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809051A (en) * | 2012-11-13 | 2014-05-21 | 上海斐讯数据通信技术有限公司 | Automatic test system and switch matrix and detection method thereof in automatic test system |
| CN104502836A (en) * | 2014-11-30 | 2015-04-08 | 中国计量学院 | Array-type status detection circuit suitable for internal relay of scanning switch |
| CN105337903A (en) * | 2015-11-18 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Port state indication device of switch and switch thereof |
| CN105916296A (en) * | 2016-05-17 | 2016-08-31 | 中国电子科技集团公司第四十研究所 | RF type PXI module motherboard |
| CN109341411A (en) * | 2018-09-20 | 2019-02-15 | 中北大学 | A kind of trigger circuit |
| CN111352884A (en) * | 2020-03-10 | 2020-06-30 | 中国西安卫星测控中心 | Large-scale switch matrix expansion method with consistent transmission path electrical length |
-
2011
- 2011-05-23 CN CN 201120170420 patent/CN202111685U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809051A (en) * | 2012-11-13 | 2014-05-21 | 上海斐讯数据通信技术有限公司 | Automatic test system and switch matrix and detection method thereof in automatic test system |
| CN104502836A (en) * | 2014-11-30 | 2015-04-08 | 中国计量学院 | Array-type status detection circuit suitable for internal relay of scanning switch |
| CN104502836B (en) * | 2014-11-30 | 2017-04-19 | 中国计量学院 | Array-type status detection circuit suitable for internal relay of scanning switch |
| CN105337903A (en) * | 2015-11-18 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Port state indication device of switch and switch thereof |
| CN105916296A (en) * | 2016-05-17 | 2016-08-31 | 中国电子科技集团公司第四十研究所 | RF type PXI module motherboard |
| CN105916296B (en) * | 2016-05-17 | 2018-07-06 | 中国电子科技集团公司第四十一研究所 | A kind of radio frequency class PXI module motherboards |
| CN109341411A (en) * | 2018-09-20 | 2019-02-15 | 中北大学 | A kind of trigger circuit |
| CN109341411B (en) * | 2018-09-20 | 2020-12-11 | 中北大学 | Trigger circuit |
| CN111352884A (en) * | 2020-03-10 | 2020-06-30 | 中国西安卫星测控中心 | Large-scale switch matrix expansion method with consistent transmission path electrical length |
| CN111352884B (en) * | 2020-03-10 | 2023-04-07 | 中国西安卫星测控中心 | Large-scale switch matrix expansion method with consistent transmission path electrical length |
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