Actual operating time indicator
AssigneeKito Corporation
InventorsKazuhito Tsukahara, Hisatsugu Watanabe
Life of this patent
Estimating the term…
Abstract
An actual operating time indicator includes: a lifting motor for lifting a load up/down; a power detection unit for detecting an input power based on a current and a voltage supplied to the motor, and converting the input power into a first voltage proportional to the input power; a voltage-to-periodic pulse conversion unit connected to the power detection unit for receiving the first voltage and converting the first voltage into the periodic pulse proportional to the first voltage; a counter unit connected to the voltage-to-periodic pulse conversion unit for counting and integrating the periodic pulse to obtain an integrated power; and a display operatively connected to the counter unit for indicating the integrated power as an actual operating time of the motor.
Claims11
An actual operating time indicator, comprising:
- a lifting motor (M) for lifting a load (L) up/down;
- a power detection means (1) for detecting an input power (W) based on a current (A) and a voltage (V) supplied to the motor (M), and converting the input power (W) into a first voltage (el) proportional to the input power (W);
- a voltage-to-periodic pulse conversion means (2) connected to the power detection means (1) for receiving the first voltage (el) and converting the first voltage (el) into the periodic pulse (f) proportional to the first voltage (el);
- a counter means (3) connected to the voltage-to-periodic pulse conversion means (2) for counting and integrating the periodic pulse (f) to obtain an integrated power;
- and
- a display (6) operatively connected to the counter means (3) for indicating the integrated power as an actual operating time (T) of the motor (M).
An actual operating time indicator, comprising:
- a lifting motor (M) for lifting a load (L) up/down;
- a power detection means (1') for detecting an input power (W) based on a current (A) and a voltage (V) supplied to the motor (M), converting the input power (W) into a first voltage (el, Vb) proportional to the input power (W), and further converting the first voltage (el) into a second voltage (e2) which is converted based on a predetermined formula defined by a relationship between a rated load and a life span of a mechanism;
- a voltage-to-periodic pulse conversion means (2) connected to the power detection means (1') for receiving the second voltage (e2) and converting the second voltage (e2) into the periodic pulse (f) proportional to the second voltage (e2);
- a counter means (3) connected to the voltage-to-periodic pulse conversion means (2) for counting and integrating the periodic pulses (f) to obtain an integrated power;
- and
- a display (6) operatively connected to the counter means (3) for indicating the integrated power as an actual operating time (T) of the motor (M).
An actual operating time indicator, comprising:
- a lifting motor (M) for lifting a load (L) up/down;
- a power detection means (1) for detecting an input power (W) based on a current (A) and a voltage (V) supplied to the motor (M), and converting the input power (W) into a first voltage (el) proportional to the input power (W);
- a microcomputer (M) connected to the power detection means (1) for receiving the first voltage (el) and outputting an integrated power;
- and
- a display (6) connected to the microcomputer (M) indicating the integrated power as an actual operating time (T) of the motor (M).
Dependencies are inferred from the claim text.