Elevator electronic position device

Claim 2

A position control for an object having a predetermined path of travel comprising means coupled to the object for generating an impulse in response to a given increment of displacement of the object; a counter having upper and lower count limits for accumulating said impulses and having its count in a second code scaled to the position of the object, said count being scaled to provide a predetermined count other than said limits for a check station of the object along its path; check means responsive to the positioning of said object at the check station along its path of travel; means included in said check means for generating a unique signal in a first code for said check station; means generating a count signal in said second code in response to said check means which corresponds to the predetermined count of said counter; and means to compare said check means generated count signal with the count accumulated in said counter.

Claim 3

A position control according to claim 1 wherein said means to compare includes means to correct the accumulated count in said counter to the predetermined count.

Claim 4

A position control according to claim 1 including means indicating the direction of travel of the object along its path of travel; and wherein said counter is an up-down counter and accumulates impulses in an ascending and descending count depending upon the direction of travel indicated by said indicating means.

Claim 5

A position control according to claim 1 wherein the object is an elevator car and said check station is a landing of a structure served by said elevator car.

Claim 6

A combination according to claim 1 including means to selectively alter the count signal generated in said count signal generating means which is generated in response to said check means.

Claim 7

A position control according to claim 1 wherein said means to compare includes encoding means to encode said first code to said second code.

Claim 8

A position control according to claim 6 including means to generate a destination position signal for said object in said first code; and means to selectively apply said first coded destination position signal to said encoding means.

Claim 9

A position control according to claim 6 including means selectively to generate any of a plurality of destination position signals for said object in said first code; and means to selectively apply said first coded destination position signal to said encoding means.

Claim 10

A position control according to claim 1 including a plurality of spaced operating stations for said object along said path; and wherein said given increment of displacement of the object is less than the least spacing between said spaced stations.

Claim 11

A position control for an Object having a predetermined path of travel comprising means coupled to the object for generating an impulse in response to a given increment of displacement of the object; a counter for accumulationg said impulses and having its count in a second code scaled to the position of the object, said count being scaled to provide unique predetermined counts for each of a plurality of predetermined check stations for the object along its path of travel; check means responsive to the positioning of the object at each of said plurality of predetermined check stations along its path of travel; means included in said check means for generating a unique signal in a first code for each of said check stations; means generating a count signal in said second code which corresponds to said unique predetermined count of said counter in response to said check means operation responsive to the positioning of the object at the corresponding check station; and means to compare said check means generated count signals with the count accumulated in said counter.

Claim 12

A position control for an Object having a predetermined path of travel comprising means coupled to the object for generating an impulse in response to a given increment of displacement of the object; a counter for accumulationg said impulses and having its count in a second code scaled to the position of the object, said count being scaled to provide unique predetermined counts for each of a plurality of predetermined check stations for the object along its path of travel; check means responsive to the positioning of the object at each of said plurality of predetermined check stations along its path of travel; means included in said check means for generating a unique signal in a first code for each of said check stations; means generating a count signal in said second code which corresponds to said unique predetermined count of said counter in response to said check means operation responsive to the positioning of the object at the corresponding check station; and means to compare said check means generated count signals with the count accumulated in said counter.

Claim 13

A position control according to claim 4 wherein said object is an elevator car; wherein said check stations are landings of a structure served by said elevator car; wherein said check means generates landing designations in a first code; and wherein said count signals are position designations.

Claim 14

A position control according to claim 4 including first means to generate check station signals in response to said check means; output means to issue home station signals for said object; coupling means coupling said means to generate check station signals to said home station signal output means in response to the stop of said object at a respective check station.

Claim 15

A position control according to claim 4 including first means to generate check station signals in response to said check means; signal storage means coupled to said check station signal generating means to store check station signals; and coupling means between said signal storage means and said means generating a count signal.

Claim 16

A position control according to claim 4 including a plurality of first means selectively operable in a unique combination for each check station to generate check station signals in response to said check means; and a parity checker to enable said check station signal generation means.

Claim 17

A position control according to claim 4 first means to generate check station signals in response to said check means; second means to generate check station signals; a first coupling between said first means to generate check station signals and said count signal generating means; a second coupling between said second means to generate check station signals and said count signal generating means, a third coupling between said count signal generating means and said counter; a count signal output; a fourth coupling between said count signal generating means and said count signal output; first means for selectively enabling said first and third coupling means whereby the positioning of the object at a check station compares said check means generated signal with the count in said counter; and second means for selectively enabling said second and fourth coupling means whereby said second signal generating means produces a count signal at said count signal output.

Claim 18

A position control according to claim 5 including mutually exclusive interlock means between said first enabling means and said second enabling means.

Claim 19

A position control according to claim 4 including a plurality of first switching means selectively operable in a unique combination for each check station to generate check station binary signals in response to said check means; a binary-to-line decoder coupled to said check station binary signal generating means; and wherein said count signal generating means comprises a line-to-binary position count decoder coupled to said binary-to-line decoder.

Claim 20

A combination according to claim 17 including means to selectively alter anY of the position counts for respective lines as developed in said line-to-binary position count decoder.

Claim 21

A combination according to claim 4 including means to selectively alter any of the unique predetermined count signals generated in said count signal generating means which is generated in response to check means for respective check stations.

Claim 22

A position control according to claim 4 wherein the object is an elevator and the check stations are landings of a structure served by the elevator car; including a plurality of first means selectively operable in a unique combination for each check station to generate check station signals in a binary code in response to said check means; a parity checker to enable said check station signal generation means; a signal storage means coupled to said check station signal generation means to store check station signals; home station output means to issue home station signals for said elevator car; home station signal coupling means coupling said signal storage means to said home station output means in response to the stop of said elevator car at a respective check station; second means to generate check station signals in a binary code; said count signal generating means comprising a check station binary-to-line decoder coupled to a position count line-to-binary decoder; a first coupling between said storage means and said count signal generating means; a target check station signal generating means to identify the landing to which the elevator car is traveling; a second coupling between said target check station signal generating means and said count signal generating means; a third coupling between said count signal generating means and said counter; a target station position count signal output; a fourth coupling between said count signal generating means and said target station position count output; first means for selectively enabling said first and third coupling means whereby the positioning of the elevator car at a check landing compares said check means generated position count signal with the count in said counter; second means for selectively enabling said second and fourth coupling means whereby said target landing position count issues at said target position output; and mutually exclusive interlock means between said first enabling means and said second enabling means.