There is the programmable logic controller (PLC) of the switching based on MEMS (micro electro mechanical system)

There is the programmable logic controller (PLC) of the switching based on MEMS (micro electro mechanical system)

  • CN 101,436,048 B
  • Filed: 11/14/2008
  • Issued: 01/13/2016
  • Est. Priority Date: 11/14/2007
  • Status: Active Grant
First Claim
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1. a programmable logic controller (PLC), comprising:

  • CPU (central processing unit) (22);

    Numeral input/output interface (24), is operationally couple to described CPU (central processing unit) (22), and described digital input/output interface (24) has at least one input end and at least one output terminal;

    WithAt least one MEMS (micro electro mechanical system) " MEMS " switch (28), one of to be connected at least one input end described with one of at least one output terminal described separately, thus definition input mems switch (28) and output mems switch (28)Wherein, each mems switch (28) comprises arc suppressing circuit (32) and the commutation circuit (30) based on MEMS,Wherein, the described commutation circuit based on MEMS (30) comprises and has that source electrode connects (40), drain electrode connects (38) and is connected the mems switch (36) of (42) with grid, andWherein, described arc suppressing circuit (32) comprises balance diode bridge and pulsing circuit, and the described mems switch (36) in the wherein said commutation circuit based on MEMS (30) couples in parallel across the mid point of described balance diode bridge.

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