Matrix switch
Technical field
The present invention relates to a kind of electric switch, specifically be meant a kind of matrix switch.
Background technology
In industries such as the manufacturing of hyundai electronics, electrical equipment, tests, and in fields such as electrical equipment manufacturing, scientific research, all need to test the service behaviour of various elements or module.A plurality of test events for a module, change the outfit after finishing in last once test often and test again, the time that changes the outfit is longer, and, for a plurality of tested modules, aptitude test after a last module testing is finished always, promptly at one time the section in, it is in running order having only a tester, and the utilization rate that how to reduce the number of times that changes the outfit and improve tester all is a difficult problem.
Summary of the invention
The object of the present invention is to provide a kind of matrix switch, realize any switching of multi-to-multi between tested module and the tester, promptly realize in the selection circuit of n*n any switching of any one tunnel.
Purpose of the present invention is achieved through the following technical solutions:
A kind of matrix switch of the present invention comprises the matrix that is made of n*n n input module and n output module, and n is 〉=2 natural number.As required, size that can the selection matrix switch, i.e. what of port number are realized the switch matrix of n*n.
Described input module has n input interface and n output interface, and output module has n input interface and an output interface, and the n of an input module output interface connects respectively at the input interface of n output module.Constitute a unit group by an input module and an output module, this unit group has n input interface and an output interface.
An input module comprises n single-pole double-throw switch (SPDT) and 2 single-pole n-throw switch, the fixed port butt joint of 2 single-pole n-throw switch, n single-pole double-throw switch (SPDT) selects port to be connected respectively with the input of a single-pole n-throw switch, the delivery outlet of port as input module selected in the input of the single-pole n-throw switch that is connected with single-pole double-throw switch (SPDT), and n single-pole double-throw switch (SPDT) is as n input port of input module.
An output module comprises single-pole n-throw switch that is connected with the delivery outlet of input module and the dc-dc converter that is connected with this single-pole n-throw switch fixed port, with the delivery outlet of dc-dc converter delivery outlet as output module, the n of single-pole n-throw switch the input port of selecting port as output module.
The two states of single-pole double-throw switch (SPDT): COM-NC is communicated with, COM-NO is communicated with interlocking between the two states, has only a kind of connected state to exist; The interior interlocking of section at one time of n single-pole double-throw switch (SPDT) in each unit group, promptly have only a single-pole double-throw switch (SPDT) to be in the COM-NO connected state, remaining is the COM-NC connected state, adopt single-pole n-throw switch to connect between input module and the output module, to same input, have only one the tunnel to be conducting, also have only one the tunnel to be conducting for same output.
Described n is 4 or 6.According to different test environments and test process, select different matrix size, realize the test that once changes the outfit by changing the n value to different test processs.
The present invention compared with prior art has following advantage and beneficial effect:
A kind of matrix switch of 1 the present invention is changed into n time change the outfit once and to be changed the outfit, and has reduced the number of times that changes the outfit, and has reduced the testing time.
A kind of matrix switch of 2 the present invention can realize that the selector switch of multi-to-multi switches arbitrarily, has reduced the wiring in traditional multi-to-multi selection mode.
A kind of matrix switch of 3 the present invention can be expanded according to demand, forms the more matrix of number of channels, satisfies more multichannel demand.
Description of drawings
Fig. 1 is an electronic devices and components connection diagram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1
Of the present invention a kind of matrix switch comprises the matrix that is made of n*n n input module and n output module, and n is 〉=2 natural number.As required, size that can the selection matrix switch, i.e. what of port number are realized the switch matrix of n*n.The n value is set to 4 in the present embodiment.
Described input module has 4 input interfaces and 4 output interfaces, and output module has 4 input interfaces and an output interface, and 4 output interfaces of an input module connect respectively at the input interface of 4 output modules.Constitute a unit group by an input module and an output module, this unit group has 4 input interfaces and an output interface.Constitute the matrix of 4*4 by 4 input modules and 4 output modules.
An input module comprises 4 single-pole double-throw switch (SPDT)s and 2 hilted broadsword 4 throw switches, the fixed port butt joint of 2 hilted broadsword 4 throw switches, i.e. COM port butt joint; 4 single-pole double-throw switch (SPDT)s select port to be connected respectively with the input of hilted broadsword 4 throw switches, the delivery outlet of port as input module selected in the input of hilted broadsword 4 throw switches that are not connected with single-pole double-throw switch (SPDT), and n single-pole double-throw switch (SPDT) is as n input port of input module.What be connected with single-pole double-throw switch (SPDT) is first order hilted broadsword 4 throw switches, and what be connected with output module is second level hilted broadsword 4 throw switches.
An output module comprises single-pole n-throw switch that is connected with the delivery outlet of input module and the dc-dc converter that is connected with this single-pole n-throw switch fixed port, with the delivery outlet of dc-dc converter delivery outlet as output module, the n of single-pole n-throw switch the input port of selecting port as output module.
The two states of single-pole double-throw switch (SPDT): COM-NC is communicated with, COM-NO is communicated with interlocking between the two states, has only a kind of connected state to exist; The interior interlocking of section at one time of n single-pole double-throw switch (SPDT) in each unit group, promptly have only a single-pole double-throw switch (SPDT) to be in the COM-NO connected state, remaining is the COM-NC connected state, adopt single-pole n-throw switch to connect between input module and the output module, to same input, have only one the tunnel to be conducting, also have only one the tunnel to be conducting for same output.
The course of work:
4 tested interfaces of a detected element or module are connected to 4 input interfaces of a unit group, output interface in the unit group is connected to tester, so for 4 unit groups, constitute the matrix of 4*4, each detected element or module can only the unique testers of UNICOM, and each tester can only be connected to unique detected element or module, when this time test is finished, the position of change over switch is tested next time.Through four times test, 4 north side elements or module have all been finished its test, and under identical situation of required unit interval of 4 test programs, such testing efficiency is 4 times of single test.
As mentioned above, just can realize the present invention well.