Elevator apparatus including main and auxiliary sensors
First Claim
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1. An elevator apparatus comprising:
- a car raised and lowered within a hoistway;
a main sensor unit configured to generate a main detection signal corresponding to a movement amount of the car;
a control device configured to obtain car information including at least one of car position information and car speed information based on the main detection signal, and control operation of the car in accordance with the car information;
an auxiliary sensor unit configured to generate an auxiliary detection signal upon detecting an arrival of the car at a preset reference position within the hoistway; and
the control device is further configured to make a correction to the car information based on the auxiliary detection signal, determine a threshold speed for the car, and monitor the car speed information in the car information to determine whether the car has reached the threshold speed.
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Abstract
In an elevator apparatus, a control device obtains car information including at least one of car position information and car speed information based on a main detection signal from a main sensor unit. An auxiliary sensor unit detects arrival of a car at a preset reference position with in a hoistway to generate an auxiliary detection signal. The control device makes corrections to the car information based on the auxiliary detection signal.
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Citations
20 Claims
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1. An elevator apparatus comprising:
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a car raised and lowered within a hoistway; a main sensor unit configured to generate a main detection signal corresponding to a movement amount of the car; a control device configured to obtain car information including at least one of car position information and car speed information based on the main detection signal, and control operation of the car in accordance with the car information; an auxiliary sensor unit configured to generate an auxiliary detection signal upon detecting an arrival of the car at a preset reference position within the hoistway; and the control device is further configured to make a correction to the car information based on the auxiliary detection signal, determine a threshold speed for the car, and monitor the car speed information in the car information to determine whether the car has reached the threshold speed. - View Dependent Claims (3, 4, 5, 7, 9, 10)
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2. An elevator apparatus comprising:
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a car raised and lowered within a hoistway; a main sensor unit mounted to the car and configured to generate a main detection signal corresponding to a movement amount of the car; a control device configured to obtain car information including at least one of car position information and car speed information based on the main detection signal, and control operation of the car in accordance with the car information; an auxiliary sensor unit configured to generate an auxiliary detection signal upon detecting an arrival of the car at a preset reference position within the hoistway; the control device is further configured to make a correction to the car information based on the auxiliary detection signal; a car guide rail configured to guide raising and lowering of the car, wherein the main sensor unit has a detection roller that is rolled along the car guide rail as the car is raised and lowered; and a signal generator configured to generate the main detection signal in accordance with a rotation of the detection roller. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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6. An elevator apparatus comprising:
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a car raised and lowered within a hoistway; a main sensor unit mounted to the car and configured to generate a main detection signal corresponding to a movement amount of the car; a control device configured to obtain car information including at least one of car position information and car speed information based on the main detection signal, and control operation of the car in accordance with the car information; an auxiliary sensor unit configured to generate an auxiliary detection signal upon detecting an arrival of the car at a preset reference position within the hoistway; and the control device is further configured to make a correction to the car information based on the auxiliary detection signal, and when an amount of the correction is equal to or larger than a set value that is set in advance, the control device judges that there is a failure in at least one of the main sensor unit and the auxiliary sensor unit to generate a failure detection signal. - View Dependent Claims (18, 19, 20)
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8. An elevator apparatus comprising:
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a car raised and lowered within a hoistway; a main sensor unit configured to generate a main detection signal corresponding to a movement amount of the car; a control device configured to obtain car information including at least one of car position information and car speed information based on the main detection signal, and control operation of the car in accordance with the car information an auxiliary sensor unit configured to generate an auxiliary detection signal upon detecting an arrival of the car at a preset reference position within the hoistway; and the control device monitors an error in the car information based on the auxiliary detection, and when an amount of the error is greater than a predetermined value, the control device judges that there is a failure in one of the main sensor unit and the auxiliary sensor unit to generate a failure detection signal.
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Specification