Patent ID: 7796525
Filing Date: 2010-09-14
Classification: G05B

Abstract:
1. An apparatus for switching connectivity of objects to be sensed, the apparatus comprising: a primary control board; and a secondary control board, which is connected to the primary control board via first sensing lines and control lines, and is connected to the objects via second sensing lines, the secondary control board comprising a control circuit and a switch circuit, wherein: the control circuit comprises a counter with an output port, wherein the output port of the counter is controlled by a status of each of the control lines; and the switch circuit comprises at least one data selector, which has a channel selection port that receives counter values of the counter, a plurality of input ends connected to the objects in one-to-one correspondence, and an output end connected to the primary control board by one of the first sensing lines, each input end of the at least one data selector has an address value equal to a corresponding counter value of the counter, the output end of the at least one data selector transmits information of the objects to the primary control board according to the counter values received by the channel selection port of the at least one data selector correspondingly.