Door control systems
First Claim
1. A door controller for transit vehicles having a power door operator for moving at least one door in said vehicle between open and closed positions, comprising;
- means sensing wheel rotation and generating motion signals;
means sensing vehicular propulsion, and generating propulsion signals;
means generating a manual door opening signal;
means generating door operating signals corresponding to door open and closed states respectively;
means responsive to first and second combinations of said motion, propulsions, and operating signals, generating an enabling signal for opening said power door when predetermined first combinations of said motion signals and propulsion signals occur;
means in said responsive means, further responsive to said manual door opening signal, for actuating said operator;
whereby said manual door opening signal moves said doors from closed to open positions on occurrence of said first combination.
4 Assignments
0 Petitions
Accused Products
Abstract
A door control system, particularly suited for multiple door rapid transit vehicles wherein car operating parameters including car speed sensing (5), traction propulsion sensing (7), and other indications of internal circuitry establish and continuously test for predetermined conditions under which a power operated door can be opened. A low speed detector (1) incorporates a micro-processor (8) and a no motion relay (3) to evaluate car and circuit operating conditions, providing control of all transit car doors. The micro-processor and associated control equipment also recognize predetermined failure modes. Occurrence of predetermined failure modes results in the overall system (1) reverting to a more conservative state. Coded indication (2) of failure modes is provided for easy indentification and corrective action by train operating crews.
18 Citations
24 Claims
-
1. A door controller for transit vehicles having a power door operator for moving at least one door in said vehicle between open and closed positions, comprising;
-
means sensing wheel rotation and generating motion signals; means sensing vehicular propulsion, and generating propulsion signals; means generating a manual door opening signal; means generating door operating signals corresponding to door open and closed states respectively; means responsive to first and second combinations of said motion, propulsions, and operating signals, generating an enabling signal for opening said power door when predetermined first combinations of said motion signals and propulsion signals occur; means in said responsive means, further responsive to said manual door opening signal, for actuating said operator; whereby said manual door opening signal moves said doors from closed to open positions on occurrence of said first combination. - View Dependent Claims (2, 3, 4, 5, 6, 17)
-
-
7. In combination, a power door actuator for transit vehicles having a propulsion system providing tractive effort, and at least one door in said vehicle operable by said actuator from closed to open positions, comprising;
-
an axle mounted pickup for generating signals indicative of vehicular speed; means coacting with said propulsion system for generating a signal indicative of tractive effort; means controlling said actuator, enabled by manual actuation and responsive to vehicular speed signals in first and second predetermined ranges, and further responsive to a traction signal, for initiating door operation; whereby on manual demand, said vehicular doors are powered open under predetermined conditions of vehicular operation. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for opening power operated doors on mass transit vehicles having a propulsion system comprising the steps of;
-
sensing rotation of at least one wheel on said vehicle; determining the speed of said vehicle from said sensed rotation; repeating said sped determination to establish a plurality of measured speeds; establishing a valid speed range for said speeds; providing a valid first signal indicative of groups of said speeds within said valid speed range; sensing the absence of propulsion in said vehicle; and
generating a second signal;generating a manual door actuating signal by train attendant operation of a manual switch, said actuating signal having signal presence and signal absence states; sensing the signal absence state of said manual door actuating signal; and
generating a third signal;combining said signals selectively according to predetermined characteristics of said combination, thereby generating a manual door actuating signal; enabling operation of said vehicular doors on occurrence of said manual door actuating signal; and
,whereupon said vehicular doors are powered open establishing improved passenger traffic. - View Dependent Claims (16, 18, 19)
-
-
20. A manually actuated door controller for transit vehicles having a propulsion system and a power door actuator for moving at least one door from open to closed position comprising;
-
a wheel speed sensor for generating signals indicative of vehicular speeds; means responsive to said speed signals within a predetermined range for establishing a first operating condition; means manually generating a door opening signal and establishing a second operation condition; means sequentially evaluating said first and second operating condition and generating an enabling signal when said conditions occur in a predetermined sequence; means in said actuator responsive to said enabling signal for opening said door. - View Dependent Claims (21, 22, 23, 24)
-
Specification