Elevator testing system
First Claim
1. A testing system removably connected to an elevator system having a control circuit selectively supplying gating pulses to gated rectifying means operatively supplying controlled amounts of energy from an energy source to motive means operating an elevator car, comprising input means removably connected to said control circuit and electrically sensing said gating pulses, conditioning means connected to said input means and providing a pulse having a substantially uniform magnitude in response to each of said sensed gating pulses, and means connected to said conditioning means and providing an output representing the substantial average of said uniform pulses over a predetermined period of time.
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0 Petitions
Accused Products
Abstract
A testing system is removably connected to a control of an elevator system and selectively operated to perform a plurality of testing sequences. The testing system is removably connected with a closed loop elevator control and selectively and independently provides a number of artificial control signals characteristic of an operating condition for controlling the operation of the elevator system under test. The testing system may be used in a testing sequence with elevator systems employing gated rectifying circuits to accurately monitor gate pulses and other operating functions therein.
29 Citations
31 Claims
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1. A testing system removably connected to an elevator system having a control circuit selectively supplying gating pulses to gated rectifying means operatively supplying controlled amounts of energy from an energy source to motive means operating an elevator car, comprising input means removably connected to said control circuit and electrically sensing said gating pulses, conditioning means connected to said input means and providing a pulse having a substantially uniform magnitude in response to each of said sensed gating pulses, and means connected to said conditioning means and providing an output representing the substantial average of said uniform pulses over a predetermined period of time.
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2. A testing system removably connected to an elevator system having a control circuit selectively supplying first and second gating pulses during each electrical cycle of an alternating energy source to gated rectifying means operatively supplying controlled amounts of energy from said energy source to motive means operating an elevator car, comprising input means removably connected to said control circuit and electrically sensing said first and second gating pulses, conditioning means connected to said input means and providing a pulse having a substantially uniform magnitude in response to each of said sensed first and second gating pulses, and means connected to said conditioning means and providing a first predetermined magnitude output in response to the sensing of said first and second gating pulses and a second predetermined magnitude output different from said first output in response to the absence of at least one of said first and second gating pulses.
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3. A testing system removably connected to an elevator system having a control circuit and a first releasable connector having first and second mating terminals with said first terminal connected to said control circuit and said second terminal connected to selectively supply first and second gating pulses during each electrical cycle of an alternating energy source to gated rectifying means operatively supplying controlled amounts of energy from said energy source to motive means operating an elevator car, comprising a third terminal removably connected with said first terminal and providing a second releasable connector forming an electrical input circuit sensing said first and second gating pulses, a conditioning circuit connected to said input circuit and including a first switching circuit transferring from a first condition to a second condition in response to one of said sensed first and second pulses and transferring from said second condition to said first condition in response to the absense of said sensed first and second pulses and a second switching circuit connected to said first switching circuit and transferring from a first condition to a second condition in response to the second condition of said first switching circuit and providing a first substantially constant magnitude output, said second switching circuit transferring to said first condition in response to the first condition of said first switching circuit and providing a second substantially constant magnitude output different from said first output, and a meter connected to said conditioning circuit and providing a constant output reading representing the substantial average of said first and second substantially constant outputs during each electrical cycle.
- 4. A testing system removably connected to an elevator system having motive means operating an elevator car and control means including a closed loop control operatively receiving an output proportional signal from means responsive to an output of said motive means and operatively supplying controlled amounts of energy from an energy source to said motive means and moving said elevator car in response to a control signal within said control means, said control means including circuit means removably connecting first and second circuits providing control of said motive means, comprising means including a test control circuit removably connected to said circuit means and providing an artificial control signal characteristic of an operating condition of said elevator system and controlling the operation of said motive means, and means removably connected to said control means and monitoring said control signal with said elevator system operating in response to said artificial control signal.
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27. A testing system removably connected to an elevator system having control means including a malfunction monitor operatively controlling the amount of energy supplied from an energy source to motive means operatively controlling an elevator car, said control means including circuit means removable connecting first and second circuits providing control of said motive means, comprising means including a test control circuit removably connected to said circuit means and providing an artificial control signal characteristic of a malfunction condition of said elevator system and controlling the operation of said motive means, and means removably connected to said control means and monitoring a control signal within said control means with said elevator system operating in response to said artificial control signal.
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28. A testing system removably connected to an elevator system having motive means operating an elevator car and control means including first and second circuits removably connected and providing a closed loop control circuit operatively receiving an output proportional signal from means responsive to an output of said motive means and operatively supplying controlled amounts of energy from an energy source to said motive means and moving said elevator car in response to a control signal within said control means, comprising means including a test control circuit having a third circuit removably connected to said first circuit and a fourth circuit removably connected to said second circuit and selectively operative between a first condition completing said closed loop control circuit and a second condition introducing an artificial control signal characteristic of an operating condition of said elevator system and controlling the operation of said motive means, and means removably connected to said control means and monitoring said control signal with said elevator system operating in response to said closed loop control circuit and with said elevator system operating in response to said artificial control signal.
- 29. A testing system removably connected to an elevator system having motive means moving an elevator car, braking means including a selectively operable braking element permitting vehicle movement and retaining said car in a stopped position, and control means operating in response to a control signal and selectively operating said motive means and selectively supplying energy from an energy source to said braking means, said control means including circuit means removably connecting first and second circuits providing control of said braking means, comprising means including a test control circuit removably connected to said circuit means and providing an artificial control signal characteristic of an operating condition of said elevator system and controlling the operation of said braking means, and means removably connected to said control means and monitoring said control signal with said elevator system operating in response to said artificial control signal.
Specification